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#ffffff;--primary-action-shadow: 0 14px 28px rgba(59, 130, 246, .22);--usage-progress-low: rgba(0, 0, 0, .68);--usage-progress-medium: #f59e0b;--usage-progress-high: var(--accent-red);--model-pro-bg: rgba(0, 0, 0, .035);--model-pro-border: rgba(0, 0, 0, .1);--model-pro-selected-border: rgba(0, 0, 0, .32);--model-pro-selected-shadow: 0 18px 34px rgba(15, 23, 42, .1);--model-pro-price-bg: var(--plus-gradient);--model-pro-price-text: var(--primary-action-text);--model-pro-price-shadow: var(--primary-action-shadow);--tariff-accent-bg: var(--plus-gradient);--tariff-accent-text: #ffffff;--tariff-accent-border: transparent;--tariff-accent-shadow: 0 20px 34px rgba(102, 126, 234, .28);--tariff-accent-soft-bg: rgba(102, 126, 234, .1);--tariff-accent-soft-border: rgba(102, 126, 234, .3);--tariff-accent-soft-shadow: 0 18px 36px rgba(102, 126, 234, .16);--bg-sidebar-item-active: var(--interactive-active-bg);--border-sidebar-item-active: var(--interactive-active-border);--bg-edit-mode: #f4f4f4;--bg-overlay: rgba(0, 0, 0, .1);--text-primary: #000000;--text-secondary: #6e6e80;--text-tertiary: #8e8ea0;--text-edit-mode: #000000;--border-light: #e5e5e5;--border-medium: #d1d1d6;--border-edit-mode: #d1d1d6;--accent-blue: #3b82f6;--accent-blue-hover: #2563eb;--accent-red: #ef4444;--accent-red-hover: #dc2626;--button-cancel-bg: #e5e5e5;--button-cancel-text: #6e6e80;--button-cancel-hover: #d1d1d6;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 2px 4px rgba(0, 0, 0, .1);--shadow-lg: 0 18px 46px rgba(15, 23, 42, .12)}@media(prefers-color-scheme:dark){:root{--bg-primary: #000000;--bg-secondary: #0a0a0a;--bg-tertiary: #171717;--bg-chat-input: #1a1a1a;--bg-user-message: #1a1a1a;--bg-bot-message: transparent;--bg-sidebar: #000000;--bg-sidebar-item: #000000;--bg-sidebar-item-hover: #0a0a0a;--chrome-glass-strong: rgba(0, 0, 0, .86);--chrome-glass-soft: rgba(0, 0, 0, .52);--chrome-glass-clear: rgba(0, 0, 0, 0);--sidebar-glass-strong: var(--chrome-glass-strong);--sidebar-glass-soft: var(--chrome-glass-soft);--sidebar-glass-clear: var(--chrome-glass-clear);--interactive-active-bg: rgba(255, 255, 255, .06);--interactive-active-border: rgba(255, 255, 255, .22);--interactive-active-shadow: 0 10px 22px rgba(0, 0, 0, .28);--primary-action-bg: var(--accent-blue-hover);--primary-action-text: #ffffff;--primary-action-shadow: 0 16px 32px rgba(96, 165, 250, .24);--usage-progress-low: rgba(255, 255, 255, .72);--usage-progress-medium: #fbbf24;--usage-progress-high: var(--accent-red);--model-pro-bg: rgba(255, 255, 255, .055);--model-pro-border: rgba(255, 255, 255, .12);--model-pro-selected-border: rgba(255, 255, 255, .34);--model-pro-selected-shadow: 0 18px 36px rgba(0, 0, 0, .34);--model-pro-price-bg: var(--plus-gradient);--model-pro-price-text: var(--primary-action-text);--model-pro-price-shadow: var(--primary-action-shadow);--tariff-accent-bg: var(--plus-gradient);--tariff-accent-text: #ffffff;--tariff-accent-border: transparent;--tariff-accent-shadow: 0 20px 38px rgba(102, 126, 234, .34);--tariff-accent-soft-bg: rgba(102, 126, 234, .14);--tariff-accent-soft-border: rgba(102, 126, 234, .34);--tariff-accent-soft-shadow: 0 18px 36px rgba(102, 126, 234, .2);--bg-sidebar-item-active: var(--interactive-active-bg);--border-sidebar-item-active: var(--interactive-active-border);--bg-edit-mode: #27272a;--bg-overlay: rgba(0, 0, 0, .5);--text-primary: #ececec;--text-secondary: #c5c5d2;--text-tertiary: #8e8ea0;--text-edit-mode: #ffffff;--border-light: #2f2f2f;--border-medium: #404040;--border-edit-mode: #3f3f46;--accent-blue: #3b82f6;--accent-blue-hover: #60a5fa;--accent-red: #ef4444;--accent-red-hover: #f87171;--button-cancel-bg: transparent;--button-cancel-text: #a1a1aa;--button-cancel-hover: #3f3f46;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 2px 4px rgba(0, 0, 0, .5);--shadow-lg: 0 22px 54px rgba(0, 0, 0, .45)}}:root{--mobile-header-offset: 72px;--mobile-input-offset: 96px}html{background-color:var(--bg-primary)}body{font-family:Inter,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);margin:0;padding:0}.scrollbar-hide::-webkit-scrollbar{display:none}.scrollbar-hide{-ms-overflow-style:none;scrollbar-width:none}.sidebar{--sidebar-content-inline-start: 20px;--sidebar-content-inline-end: 20px;--sidebar-header-inline-start: var(--sidebar-content-inline-start);--sidebar-header-inline-end: var(--sidebar-content-inline-end);--sidebar-nav-block-start: 12px;--sidebar-nav-block-end: 18px;--sidebar-nav-row-height: 48px;--sidebar-nav-row-gap: 2px;--sidebar-nav-row-bleed: 0px;--sidebar-nav-row-padding-inline: 0px;--sidebar-history-row-bleed: 0px;--sidebar-history-row-padding-inline: 0px;--sidebar-nav-icon-size: 40px;--sidebar-nav-icon-font-size: 1.125rem;--sidebar-nav-label-gap: 14px;--sidebar-nav-font-size: 1rem;--sidebar-section-font-size: 1rem;--sidebar-history-font-size: .9375rem;--sidebar-history-block-start: 8px;--sidebar-history-title-block-end: 8px;--sidebar-history-row-height: 44px;--sidebar-history-row-padding-block: 10px;--sidebar-profile-row-bleed: 0px;--sidebar-profile-row-padding-inline: 12px;transition:transform .3s ease-in-out,width .3s ease-in-out;background:var(--bg-sidebar);overflow:hidden}.sidebar-header{position:relative;z-index:2;isolation:isolate;flex-shrink:0;padding:calc(16px + var(--tg-top-offset)) var(--sidebar-header-inline-end) 12px var(--sidebar-header-inline-start)}.sidebar-header:before{content:"";position:absolute;z-index:-1;inset:0 0 -32px;background:linear-gradient(180deg,var(--sidebar-glass-strong) 0%,var(--sidebar-glass-soft) 58%,var(--sidebar-glass-clear) 100%);-webkit-backdrop-filter:blur(18px) saturate(1.12);backdrop-filter:blur(18px) saturate(1.12);pointer-events:none;-webkit-mask-image:linear-gradient(180deg,#000 0%,#000 72%,transparent 100%);mask-image:linear-gradient(180deg,#000 0%,#000 72%,transparent 100%)}.sidebar-title-row{display:grid;grid-template-columns:40px minmax(0,1fr) 40px;align-items:center;gap:.75rem;min-height:44px}.sidebar-title{min-width:0;color:var(--text-primary);font-size:2rem;font-weight:700;line-height:1.1;letter-spacing:0;justify-self:center;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-icon-button{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:40px;height:40px;border:0;border-radius:.625rem;background:transparent;color:var(--text-primary);cursor:pointer;transition:background-color .2s ease,color .2s ease;-webkit-tap-highlight-color:transparent;-webkit-appearance:none;-moz-appearance:none;appearance:none}.sidebar-search-button{justify-self:start}.sidebar-close-button{justify-self:end}.sidebar-icon-button[aria-expanded=true]{background-color:var(--bg-sidebar-item-hover);color:var(--text-primary)}@media(hover:hover){.sidebar-icon-button:hover{background-color:var(--bg-sidebar-item-hover);color:var(--text-primary)}}.sidebar-search-control{display:none;align-items:center;gap:.75rem;width:auto;min-height:44px;margin:14px calc(var(--sidebar-content-inline-end) - var(--sidebar-header-inline-end)) 0 calc(var(--sidebar-content-inline-start) - var(--sidebar-header-inline-start));padding:0 .875rem;border-radius:9999px;background-color:var(--bg-sidebar-item-hover);color:var(--text-secondary)}.sidebar.sidebar-search-active .sidebar-search-control{display:flex}.sidebar-search-input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--text-primary);font-size:.9375rem;font-weight:500}.sidebar-search-input::-moz-placeholder{color:var(--text-secondary)}.sidebar-search-input::placeholder{color:var(--text-secondary)}.sidebar-nav{display:flex;flex-direction:column;flex-shrink:0;gap:var(--sidebar-nav-row-gap);padding:var(--sidebar-nav-block-start) var(--sidebar-content-inline-end) var(--sidebar-nav-block-end) var(--sidebar-content-inline-start)}.sidebar.sidebar-search-active .sidebar-nav,.sidebar.sidebar-search-active .sidebar-account,.sidebar.sidebar-search-active .sidebar-section-title{display:none}.sidebar-scroll{min-height:0}.sidebar-nav-item,.sidebar-profile-button{display:flex;align-items:center;gap:var(--sidebar-nav-label-gap);width:100%;min-height:var(--sidebar-nav-row-height);padding:0;border:0;border-radius:.625rem;background:transparent;color:var(--text-primary);font-size:var(--sidebar-nav-font-size);font-family:inherit;font-weight:600;line-height:1.25;text-align:left;text-decoration:none;cursor:pointer;transition:background-color .2s ease;-webkit-tap-highlight-color:transparent;-webkit-appearance:none;-moz-appearance:none;appearance:none}.sidebar-nav-item{width:calc(100% + var(--sidebar-nav-row-bleed) + var(--sidebar-nav-row-bleed));margin-inline:calc(0px - var(--sidebar-nav-row-bleed));padding-inline:calc(var(--sidebar-nav-row-padding-inline) + var(--sidebar-nav-row-bleed))}.sidebar-profile-button.active{background-color:var(--bg-sidebar-item-hover)}@media(hover:hover){.sidebar-nav-item:hover,.sidebar-profile-button:hover{background-color:var(--bg-sidebar-item-hover)}}.sidebar-nav-icon{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:var(--sidebar-nav-icon-size);height:var(--sidebar-nav-icon-size);color:var(--text-primary);font-size:var(--sidebar-nav-icon-font-size)}.sidebar-nav-label{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-profile-button>div{width:100%}.sidebar-history{padding:var(--sidebar-history-block-start) var(--sidebar-content-inline-end) 16px var(--sidebar-content-inline-start)}.sidebar-section-title{padding:0 0 var(--sidebar-history-title-block-end);color:var(--text-primary);font-size:var(--sidebar-section-font-size);font-weight:700;line-height:1.25}.sidebar-account{position:relative;z-index:2;isolation:isolate;flex-shrink:0;padding:10px var(--sidebar-content-inline-end) max(12px,var(--safe-area-bottom)) var(--sidebar-content-inline-start)}.sidebar-account:before{content:"";position:absolute;z-index:-1;inset:-36px 0 0;background:linear-gradient(0deg,var(--sidebar-glass-strong) 0%,var(--sidebar-glass-soft) 58%,var(--sidebar-glass-clear) 100%);-webkit-backdrop-filter:blur(18px) saturate(1.12);backdrop-filter:blur(18px) saturate(1.12);pointer-events:none;-webkit-mask-image:linear-gradient(0deg,#000 0%,#000 74%,transparent 100%);mask-image:linear-gradient(0deg,#000 0%,#000 74%,transparent 100%)}.sidebar-profile-button{width:calc(100% + var(--sidebar-profile-row-bleed) + var(--sidebar-profile-row-bleed));min-height:64px;margin-inline:calc(0px - var(--sidebar-profile-row-bleed));padding:8px var(--sidebar-profile-row-padding-inline);border-radius:.875rem}.sidebar-profile-inner{display:grid;grid-template-columns:40px minmax(0,1fr);align-items:center;gap:.75rem;width:100%;min-width:0}.sidebar-profile-avatar{width:40px;height:40px;flex-shrink:0;border:1px solid transparent;border-radius:9999px;background:var(--bg-secondary);-o-object-fit:cover;object-fit:cover}.sidebar-profile-avatar:not([src]),.sidebar-profile-avatar[src=""]{background:var(--interactive-active-bg);border-color:var(--interactive-active-border)}.sidebar-profile-copy{min-width:0}.sidebar-profile-name{overflow:hidden;color:var(--text-primary);font-size:.875rem;font-weight:600;line-height:1.25;text-overflow:ellipsis;white-space:nowrap}.sidebar-profile-plan{display:flex;align-items:center;min-width:0;margin-top:.125rem;overflow:hidden;color:var(--text-secondary);font-size:.75rem;font-weight:500;line-height:1.25;text-overflow:ellipsis;white-space:nowrap}.plan-badge-wrap{display:inline-flex;margin-left:.25rem;vertical-align:middle}.plan-badge{display:inline-flex;align-items:center;justify-content:center;min-height:1.125rem;padding:.125rem .375rem;border:1px solid transparent;border-radius:.25rem;font-size:.625rem;font-weight:800;line-height:1;letter-spacing:0;text-transform:uppercase;white-space:nowrap}.plan-badge--plus{background:var(--tariff-accent-bg);color:var(--tariff-accent-text);border-color:var(--tariff-accent-border);box-shadow:var(--tariff-accent-shadow)}.plan-badge--free{background:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border-light);box-shadow:var(--shadow-sm)}#toggle-sidebar-button{opacity:0;pointer-events:none;transition:opacity .2s ease,background-color .2s ease}#toggle-sidebar-button.sidebar-toggle-visible{opacity:1;pointer-events:auto}@media(max-width:767px){.sidebar{--sidebar-content-inline-start: 24px;--sidebar-content-inline-end: 24px;--sidebar-header-inline-start: max(32px, var(--tg-left-offset));--sidebar-header-inline-end: max(32px, var(--tg-right-offset));--sidebar-nav-block-start: 18px;--sidebar-nav-block-end: 22px;--sidebar-nav-row-height: 50px;--sidebar-nav-row-gap: 1px;--sidebar-nav-icon-size: 34px;--sidebar-nav-icon-font-size: 1.25rem;--sidebar-nav-label-gap: 12px;--sidebar-nav-font-size: 1rem;--sidebar-section-font-size: 1rem;--sidebar-history-font-size: 1rem;--sidebar-history-block-start: 8px;--sidebar-history-title-block-end: 10px;--sidebar-history-row-height: 50px;--sidebar-history-row-padding-block: 0px;--sidebar-history-row-bleed: 12px;--sidebar-history-row-padding-inline: 12px;--sidebar-profile-row-bleed: 12px;--sidebar-profile-row-padding-inline: 12px;transform:translate(-100%);position:absolute;z-index:var(--z-sidebar);width:100%}.sidebar-open{transform:translate(0)}.sidebar-icon-button{width:40px;height:40px}.sidebar-icon-button svg{width:24px;height:24px}.sidebar-title-row{grid-template-columns:minmax(40px,1fr) max-content minmax(40px,1fr);gap:.75rem}.sidebar-search-button{grid-column:1}.sidebar-title{grid-column:2;justify-self:center;font-size:1.25rem;line-height:1.2;overflow:visible;text-overflow:clip}.sidebar-close-button{grid-column:3}.main-content{transition:transform .3s ease-in-out,filter .3s ease-in-out;position:relative}.main-content:before{content:"";position:absolute;inset:0;background-color:#ffffff0d;opacity:0;transition:opacity .3s ease-in-out;pointer-events:none;z-index:var(--z-app-chrome)}.main-content-shifted{transform:translate(100%);filter:blur(4px)}.main-content-shifted:before{opacity:1}.overlay{transition:opacity .3s ease-in-out;opacity:0;pointer-events:none;z-index:var(--z-sidebar-overlay);background-color:transparent}.overlay-active{opacity:1;pointer-events:auto}}@media(max-width:767px)and (prefers-color-scheme:light){.sidebar{border-right:1px solid var(--border-light);box-shadow:2px 0 8px #0000001a}.main-content:before{background-color:transparent}.main-content-shifted{filter:blur(4px) brightness(.95)}}@media(min-width:768px){.sidebar{position:relative;width:260px;transform:translate(0);display:flex!important;border-right:1px solid var(--border-light)}.sidebar-header{padding-top:16px}.sidebar-title{font-size:1.375rem}.sidebar-search-control{min-height:40px;margin-top:10px}.sidebar.sidebar-collapsed{width:0;overflow:hidden;border-right:none}.overlay{display:none}}.app-container{display:none;box-sizing:border-box;width:100%;height:100vh;height:100svh;padding-bottom:max(var(--safe-area-bottom),var(--safe-area-bottom-constant));background-color:var(--bg-primary);overscroll-behavior-y:contain}.desktop-sidebar-container{display:flex;flex:1;overflow:hidden}@media(max-width:767px){.app-container{position:fixed;inset:0;flex-direction:column;min-height:0;height:auto;overflow:hidden;overscroll-behavior-y:contain}.desktop-sidebar-container{flex-direction:column}}@media(min-width:768px){.app-container{flex-direction:row}.desktop-sidebar-container{flex-direction:row;flex:1}}.main-content{display:flex;flex-direction:column;flex:1;overflow:hidden;background-color:var(--bg-primary)}.app-top-header{position:relative;display:none;grid-template-columns:minmax(40px,1fr) max-content minmax(40px,1fr);align-items:center;gap:.75rem;padding:calc(16px + var(--tg-top-offset)) max(16px,var(--tg-right-offset)) 16px max(16px,var(--tg-left-offset));height:calc(72px + var(--tg-top-offset));background:transparent;isolation:isolate}.app-top-header:before{content:"";position:absolute;z-index:-1;inset:0 0 -32px;background:linear-gradient(180deg,var(--chrome-glass-strong) 0%,var(--chrome-glass-soft) 58%,var(--chrome-glass-clear) 100%);-webkit-backdrop-filter:blur(18px) saturate(1.12);backdrop-filter:blur(18px) saturate(1.12);pointer-events:none;-webkit-mask-image:linear-gradient(180deg,#000 0%,#000 72%,transparent 100%);mask-image:linear-gradient(180deg,#000 0%,#000 72%,transparent 100%)}.app-header-button{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:0;border-radius:.625rem;background:transparent;color:var(--text-primary);cursor:pointer;transition:background-color .2s ease;-webkit-tap-highlight-color:transparent;-webkit-appearance:none;-moz-appearance:none;appearance:none}@media(hover:hover){.app-header-button:hover{background-color:var(--bg-sidebar-item-hover)}}.app-header-button:first-child{justify-self:start}.app-header-button:last-child{justify-self:end}.app-header-button i{font-size:1.25rem;line-height:1}.app-header-spacer{width:40px;height:40px;justify-self:end}.app-header-title{min-width:-moz-max-content;min-width:max-content;justify-self:center;color:var(--text-primary);font-size:1.25rem;font-weight:700;line-height:1.2;text-align:center;overflow:visible;white-space:nowrap}@media(max-width:767px){.app-top-header{display:grid}.main-content>.app-top-header{position:fixed;top:0;left:0;right:0;z-index:var(--z-app-chrome);background:transparent;touch-action:manipulation}.chat-input-container{position:fixed!important;bottom:0;left:0;right:0;z-index:var(--z-app-chrome);padding-bottom:max(var(--safe-area-bottom),16px);background:transparent;touch-action:manipulation}}.chat-messages-container{flex-grow:1;overflow-y:auto;background:var(--bg-primary);overscroll-behavior-y:auto;-webkit-overflow-scrolling:touch}#welcome-screen{display:none;align-items:center;justify-content:center;overflow-y:hidden;position:relative}.welcome-screen{padding:1rem}#welcome-screen.visible{display:flex}#welcome-screen.hidden{display:none!important}.welcome-panel{display:grid;grid-template-rows:minmax(0,1fr) auto auto;justify-items:center;width:100%;max-width:42rem;min-height:min(100%,42rem);padding-bottom:1rem;text-align:center}.welcome-title{display:block;max-width:min(32rem,100%);margin:0 0 1.35rem;color:var(--text-primary);background:linear-gradient(180deg,var(--text-primary) 0%,var(--text-secondary) 100%);background-clip:text;-webkit-background-clip:text;font-size:1.95rem;font-weight:650;letter-spacing:0;line-height:1.15;-webkit-text-fill-color:transparent;opacity:1;transform:translateY(0);transition:opacity .36s var(--motion-ease-out),transform .36s var(--motion-ease-out),visibility 0s linear}.welcome-starters{display:grid;justify-items:start;gap:.45rem;width:min(30rem,100%);margin:0 auto 1.25rem;opacity:1;transform:translateY(0);transition:opacity .36s var(--motion-ease-out),transform .36s var(--motion-ease-out),visibility 0s linear}.welcome-starter{display:grid;grid-template-columns:20px minmax(0,1fr);align-items:center;gap:.55rem;width:-moz-fit-content;width:fit-content;max-width:100%;justify-self:start;min-height:32px;padding:.25rem .375rem .25rem .125rem;border:0;border-radius:0;background:transparent;color:var(--text-secondary);box-shadow:none;font-family:inherit;font-size:1rem;font-weight:450;letter-spacing:0;line-height:1.2;text-align:left;white-space:normal}.welcome-starter-icon{width:20px;color:currentColor;font-size:.95em;line-height:1;text-align:center}.welcome-starter-label{min-width:0;overflow-wrap:anywhere}.welcome-intro--hidden,body.welcome-active.zero-tokens-locked .welcome-title,body.welcome-active.zero-tokens-locked .welcome-starters{opacity:0;visibility:hidden;pointer-events:none;transform:translateY(8px)}body.welcome-active.zero-tokens-locked #welcome-question,body.welcome-active.composer-keyboard-active #welcome-question{opacity:0!important;visibility:hidden;pointer-events:none;transform:translateY(8px)}body.welcome-active.composer-keyboard-active 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