:root{--bg-color:var(--tg-theme-bg-color,#fff);--text-color:var(--tg-theme-text-color,#000);--hint-color:var(--tg-theme-hint-color,#999);--link-color:var(--tg-theme-link-color,#2481cc);--button-color:var(--tg-theme-button-color,#2481cc);--button-text-color:var(--tg-theme-button-text-color,#fff);--secondary-bg:var(--tg-theme-secondary-bg-color,#f0f0f0);--section-bg:var(--tg-theme-section-bg-color,#fff)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--secondary-bg);color:var(--text-color);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.app{max-width:100vw;min-height:100vh}.page{padding:16px;padding-bottom:calc(16px + env(safe-area-inset-bottom,0px))}h1{margin-bottom:16px;font-size:22px;font-weight:700}h2{color:var(--hint-color);margin-bottom:8px;font-size:16px;font-weight:600}.loading{text-align:center;color:var(--hint-color);padding:40px}.empty-state{text-align:center;color:var(--hint-color);padding:40px 20px}.card{background-color:var(--section-bg);border-radius:14px;margin-bottom:10px;padding:14px 16px}.card-clickable{cursor:pointer;transition:opacity .15s}.card-clickable:active{opacity:.7}.card-row{justify-content:space-between;align-items:center;display:flex}.card-label{color:var(--hint-color);text-transform:uppercase;letter-spacing:.5px;font-size:13px;font-weight:600}.card-action{color:var(--button-color);font-size:13px;font-weight:500}.card-value{white-space:nowrap;text-overflow:ellipsis;margin-top:4px;font-size:20px;font-weight:700;overflow:hidden}.card-hint{color:var(--hint-color);margin-top:2px;font-size:13px}.card-buttons{gap:8px;margin-top:12px;display:flex}.card-buttons .btn{flex:1}.btn{cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:6px;padding:10px 16px;font-size:14px;font-weight:600;transition:opacity .15s;display:inline-flex}.btn:active{opacity:.7}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--button-color);color:var(--button-text-color)}.btn-secondary{background-color:var(--secondary-bg);color:var(--text-color)}.btn-danger{color:#fff;background-color:#ff3b30}.btn-icon{border-radius:50%;flex-shrink:0;width:32px;height:32px;padding:0;font-size:16px}.toggle{flex-shrink:0;width:50px;height:28px;display:inline-block;position:relative}.toggle input{opacity:0;width:0;height:0}.toggle-slider{cursor:pointer;background-color:var(--secondary-bg);border-radius:28px;transition:background-color .2s;position:absolute;inset:0}.toggle-slider:before{content:"";background-color:#fff;border-radius:50%;width:22px;height:22px;transition:transform .2s;position:absolute;bottom:3px;left:3px;box-shadow:0 1px 3px #0003}.toggle input:checked+.toggle-slider{background-color:var(--button-color)}.toggle input:checked+.toggle-slider:before{transform:translate(22px)}.badge{background-color:var(--secondary-bg);color:var(--text-color);border-radius:6px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.badge-small{padding:1px 6px;font-size:10px}.balance-display{text-align:center;background-color:var(--section-bg);border-radius:16px;margin-bottom:20px;padding:24px}.balance-amount{font-size:36px;font-weight:700}.balance-label{color:var(--hint-color);margin-top:4px;font-size:14px}.topup-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.btn-topup{background-color:var(--section-bg);border:2px solid var(--secondary-bg);cursor:pointer;color:var(--text-color);border-radius:12px;flex-direction:column;align-items:center;gap:4px;padding:16px;transition:border-color .2s;display:flex}.btn-topup:active{border-color:var(--button-color)}.btn-topup:disabled{opacity:.5}.topup-stars{font-size:18px;font-weight:600}.topup-usd{color:var(--hint-color);font-size:13px}.chat-list{flex-direction:column;gap:8px;display:flex}.chat-item{background-color:var(--section-bg);cursor:pointer;border-radius:12px;align-items:center;gap:12px;padding:12px;transition:opacity .15s;display:flex}.chat-item:active{opacity:.7}.chat-item-active{border-left:3px solid var(--button-color)}.chat-item-content{flex:1;min-width:0}.chat-item-title{white-space:nowrap;text-overflow:ellipsis;font-size:15px;font-weight:600;overflow:hidden}.chat-item-meta{align-items:center;gap:8px;margin-top:4px;display:flex}.chat-item-count{color:var(--hint-color);font-size:12px}.chat-item-preview{color:var(--hint-color);white-space:nowrap;text-overflow:ellipsis;margin-top:4px;font-size:13px;overflow:hidden}.model-list{flex-direction:column;gap:8px;display:flex}.model-card{background-color:var(--section-bg);cursor:pointer;border:2px solid #0000;border-radius:12px;padding:12px;transition:opacity .15s}.model-card:active{opacity:.7}.model-card-selected{border-color:var(--button-color)}.model-card-header{justify-content:space-between;align-items:center;display:flex}.model-card-name{font-size:15px;font-weight:600}.model-card-desc{color:var(--hint-color);margin-top:4px;font-size:13px}.model-card-meta{color:var(--hint-color);flex-wrap:wrap;gap:8px;margin-top:8px;font-size:12px;display:flex}.model-card-check{color:var(--button-color);margin-top:8px;font-size:12px;font-weight:600}.transaction-list{flex-direction:column;gap:4px;display:flex}.transaction-item{background-color:var(--section-bg);border-radius:8px;justify-content:space-between;align-items:center;padding:10px 12px;display:flex}.transaction-info{flex:1;align-items:center;gap:8px;min-width:0;display:flex}.transaction-type{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-weight:700;display:flex}.transaction-type.topup{color:#fff;background-color:#34c759}.transaction-type.usage{color:#fff;background-color:#ff3b30}.transaction-type.bonus{color:#fff;background-color:#007aff}.transaction-type.refund{color:#fff;background-color:#ff9500}.transaction-desc{white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.transaction-amount{flex-shrink:0;margin-left:8px;font-size:14px;font-weight:600}.transaction-amount.positive{color:#34c759}.transaction-amount.negative{color:#ff3b30}