:root{--tg-theme-bg-color: #ffffff;--tg-theme-text-color: #1a1a1a;--tg-theme-hint-color: #999999;--tg-theme-link-color: #e67e22;--tg-theme-button-color: #e67e22;--tg-theme-button-text-color: #ffffff;--tg-theme-secondary-bg-color: #f5f5f5;--tg-viewport-height: 100vh;--tg-viewport-stable-height: 100vh}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--tg-theme-bg-color);color:var(--tg-theme-text-color);line-height:1.5;min-height:var(--tg-viewport-stable-height, 100vh);overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}input,button,select,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none;background:none}button{cursor:pointer;-webkit-user-select:none;user-select:none}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield}ul,ol{list-style:none}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.app{max-width:480px;margin:0 auto;padding:16px 16px 100px;min-height:var(--tg-viewport-stable-height, 100vh)}.header{text-align:center;margin-bottom:20px}.header-icon{font-size:36px;margin-bottom:4px}.header h1{font-size:22px;font-weight:700;color:var(--tg-theme-text-color)}.header p{font-size:13px;color:var(--tg-theme-hint-color);margin-top:2px}.section{margin-bottom:20px}.section-label{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--tg-theme-hint-color);margin-bottom:8px}.bill-input-wrapper{position:relative;background:var(--tg-theme-secondary-bg-color);border-radius:16px;padding:20px;text-align:center;transition:box-shadow .2s}.bill-input-wrapper:focus-within{box-shadow:0 0 0 2px #e67e22}.bill-currency-symbol{font-size:28px;font-weight:700;color:#e67e22;margin-right:4px;vertical-align:middle}.bill-input{font-size:36px;font-weight:700;text-align:center;width:70%;background:transparent;color:var(--tg-theme-text-color);caret-color:#e67e22}.bill-input::placeholder{color:var(--tg-theme-hint-color);opacity:.5}.currency-selector{display:flex;gap:8px;justify-content:center}.currency-btn{padding:6px 16px;border-radius:20px;font-size:14px;font-weight:600;background:var(--tg-theme-secondary-bg-color);color:var(--tg-theme-hint-color);transition:all .2s}.currency-btn.active{background:#e67e22;color:#fff}.tip-buttons{display:flex;gap:8px;flex-wrap:wrap}.tip-btn{flex:1 1 auto;min-width:56px;padding:10px 6px;border-radius:12px;font-size:15px;font-weight:600;background:var(--tg-theme-secondary-bg-color);color:var(--tg-theme-text-color);transition:all .15s;text-align:center}.tip-btn:active{transform:scale(.95)}.tip-btn.active{background:#e67e22;color:#fff;box-shadow:0 2px 8px #e67e2259}.custom-tip-row{display:flex;align-items:center;gap:12px;margin-top:12px}.custom-tip-row span{font-size:14px;font-weight:600;color:var(--tg-theme-hint-color);min-width:56px;text-align:center}.custom-tip-row span.active-label{color:#e67e22}.tip-slider{flex:1;-webkit-appearance:none;appearance:none;height:6px;border-radius:3px;background:var(--tg-theme-secondary-bg-color);outline:none}.tip-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;border-radius:50%;background:#e67e22;cursor:pointer;box-shadow:0 2px 6px #e67e2266}.tip-slider::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:#e67e22;cursor:pointer;border:none;box-shadow:0 2px 6px #e67e2266}.split-counter{display:flex;align-items:center;justify-content:center;gap:24px}.split-btn{width:48px;height:48px;border-radius:50%;background:var(--tg-theme-secondary-bg-color);font-size:24px;font-weight:600;color:#e67e22;display:flex;align-items:center;justify-content:center;transition:all .15s;line-height:1}.split-btn:active{transform:scale(.9);background:#e67e22;color:#fff}.split-btn:disabled{opacity:.3;cursor:not-allowed}.split-btn:disabled:active{transform:none;background:var(--tg-theme-secondary-bg-color);color:#e67e22}.split-value{font-size:32px;font-weight:700;color:var(--tg-theme-text-color);min-width:48px;text-align:center}.split-label{font-size:13px;color:var(--tg-theme-hint-color);text-align:center;margin-top:4px}.toggle-row{display:flex;align-items:center;justify-content:space-between;background:var(--tg-theme-secondary-bg-color);border-radius:12px;padding:14px 16px}.toggle-row-label{font-size:15px;font-weight:500;color:var(--tg-theme-text-color)}.toggle-switch{position:relative;width:48px;height:28px;border-radius:14px;background:#ccc;transition:background .25s;cursor:pointer;flex-shrink:0}.toggle-switch.on{background:#e67e22}.toggle-switch:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .25s;box-shadow:0 1px 3px #0003}.toggle-switch.on:after{transform:translate(20px)}.result-cards{display:flex;flex-direction:column;gap:10px}.result-card{background:linear-gradient(135deg,#f9a825,#e67e22);border-radius:16px;padding:18px 20px;color:#fff}.result-card.secondary{background:var(--tg-theme-secondary-bg-color);color:var(--tg-theme-text-color)}.result-card-label{font-size:13px;font-weight:500;opacity:.85;margin-bottom:4px}.result-card.secondary .result-card-label{color:var(--tg-theme-hint-color);opacity:1}.result-card-value{font-size:28px;font-weight:700}.result-card.secondary .result-card-value{font-size:22px}.result-row{display:flex;gap:10px}.result-row .result-card{flex:1}.comparison-section{margin-top:8px}.comparison-bar-row{display:flex;align-items:center;gap:8px;margin-bottom:6px}.comparison-label{font-size:12px;font-weight:600;color:var(--tg-theme-hint-color);min-width:36px;text-align:right}.comparison-bar-track{flex:1;height:10px;background:var(--tg-theme-secondary-bg-color);border-radius:5px;overflow:hidden;position:relative}.comparison-bar-fill{height:100%;border-radius:5px;background:#f0c27a;transition:width .3s ease}.comparison-bar-fill.current{background:#e67e22}.comparison-popularity{font-size:11px;color:var(--tg-theme-hint-color);min-width:50px}.usage-bar{display:flex;align-items:center;justify-content:space-between;background:var(--tg-theme-secondary-bg-color);border-radius:12px;padding:12px 16px;font-size:13px;color:var(--tg-theme-hint-color)}.usage-bar-count{font-weight:700;color:#e67e22}.premium-btn{padding:6px 14px;border-radius:20px;background:linear-gradient(135deg,#f9a825,#e67e22);color:#fff;font-size:13px;font-weight:600;transition:opacity .15s}.premium-btn:active{opacity:.8}.premium-badge{display:inline-block;padding:3px 10px;border-radius:10px;background:linear-gradient(135deg,#f9a825,#e67e22);color:#fff;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}.limit-warning{text-align:center;padding:24px 16px;background:var(--tg-theme-secondary-bg-color);border-radius:16px}.limit-warning p{font-size:14px;color:var(--tg-theme-hint-color);margin-bottom:12px}.limit-warning .premium-btn{padding:10px 24px;font-size:15px}.history-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.history-header .section-label{margin-bottom:0}.clear-history-btn{font-size:13px;color:#e67e22;font-weight:600}.history-list{display:flex;flex-direction:column;gap:8px}.history-item{display:flex;align-items:center;justify-content:space-between;background:var(--tg-theme-secondary-bg-color);border-radius:12px;padding:12px 16px}.history-item-left{display:flex;flex-direction:column;gap:2px}.history-item-bill{font-size:15px;font-weight:600;color:var(--tg-theme-text-color)}.history-item-details{font-size:12px;color:var(--tg-theme-hint-color)}.history-item-total{font-size:16px;font-weight:700;color:#e67e22}.history-empty{text-align:center;padding:20px;font-size:14px;color:var(--tg-theme-hint-color)}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.result-cards{animation:fadeIn .3s ease}