:root{font-family:Avenir Next,Segoe UI,sans-serif;color:#ecf4ef;background:#091015;color-scheme:dark;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--bg: #091015;--bg-deep: #132026;--panel: rgba(15, 22, 28, .84);--panel-strong: rgba(21, 31, 38, .96);--line: rgba(224, 236, 230, .12);--line-strong: rgba(224, 236, 230, .22);--ink: #ecf4ef;--muted: #97a9a2;--accent: #ff8d6d;--accent-strong: #ffb195;--accent-soft: rgba(255, 141, 109, .18);--sage: #7acaa4;--sage-soft: rgba(122, 202, 164, .18);--shadow: 0 28px 90px rgba(0, 0, 0, .38);--radius-xl: 30px;--radius-lg: 22px;--radius-md: 16px;--body-background: radial-gradient(circle at 16% 10%, rgba(122, 202, 164, .14), transparent 28%), radial-gradient(circle at 84% 18%, rgba(255, 141, 109, .18), transparent 26%), linear-gradient(145deg, #081014 0%, #0c151b 42%, #111c23 100%);--shell-overlay: radial-gradient(circle at 18% 28%, rgba(122, 202, 164, .1), transparent 28%), radial-gradient(circle at 70% 80%, rgba(255, 141, 109, .14), transparent 26%);--button-surface: rgba(255, 255, 255, .05);--button-border: rgba(224, 236, 230, .12);--button-active-surface: rgba(122, 202, 164, .16);--button-active-border: rgba(122, 202, 164, .28);--primary-ink: #08100d;--status-bg: rgba(15, 24, 30, .68);--status-border: rgba(224, 236, 230, .09);--status-shadow: 0 16px 38px rgba(0, 0, 0, .24);--breadcrumb-separator: rgba(224, 236, 230, .38);--focus-ring: rgba(122, 202, 164, .36);--scrollbar-thumb: rgba(224, 236, 230, .18);--panel-bg: linear-gradient(180deg, rgba(19, 29, 36, .82), rgba(12, 19, 25, .94)), var(--panel);--panel-border: rgba(224, 236, 230, .09);--panel-active-border: rgba(122, 202, 164, .26);--panel-active-shadow: 0 36px 100px rgba(0, 0, 0, .42), inset 0 1px 0 rgba(255, 255, 255, .04);--panel-head-bg: linear-gradient(180deg, rgba(24, 34, 41, .98), rgba(15, 23, 29, .94));--panel-head-border: rgba(224, 236, 230, .08);--badge-bg: rgba(255, 255, 255, .04);--badge-border: rgba(224, 236, 230, .08);--branch-card-bg: linear-gradient(135deg, rgba(255, 141, 109, .14), rgba(122, 202, 164, .08)), rgba(16, 25, 31, .82);--branch-card-border: rgba(224, 236, 230, .08);--branch-quote-border: rgba(255, 141, 109, .36);--assistant-bubble-bg: rgba(255, 255, 255, .04);--assistant-bubble-border: rgba(224, 236, 230, .08);--message-link: #9ad1ff;--message-inline-code-bg: rgba(255, 255, 255, .07);--message-inline-code-border: rgba(224, 236, 230, .1);--message-code-bg: rgba(8, 12, 16, .82);--message-code-border: rgba(224, 236, 230, .08);--message-code-label-bg: rgba(255, 255, 255, .08);--message-code-label-ink: rgba(236, 244, 239, .78);--message-quote-border: rgba(255, 141, 109, .34);--message-table-border: rgba(224, 236, 230, .12);--message-hr: rgba(224, 236, 230, .12);--user-bubble-bg: linear-gradient(135deg, rgba(122, 202, 164, .9), rgba(81, 156, 129, .86));--user-bubble-ink: #08100d;--system-bubble-bg: rgba(255, 141, 109, .1);--system-bubble-border: rgba(255, 141, 109, .3);--message-anchor-bg: rgba(255, 141, 109, .22);--composer-bg: linear-gradient(180deg, rgba(19, 28, 35, .9), rgba(12, 19, 25, .98));--composer-border: rgba(224, 236, 230, .08);--composer-shell-bg: linear-gradient(180deg, #101820, #0b1218);--composer-shell-border: rgba(255, 255, 255, .05);--composer-shell-shadow: inset 0 1px 0 rgba(255, 255, 255, .03), 0 20px 42px rgba(0, 0, 0, .26);--composer-ink: rgba(240, 245, 242, .94);--composer-placeholder: rgba(240, 245, 242, .5);--input-bg: rgba(255, 255, 255, .06);--input-border: rgba(224, 236, 230, .12);--composer-toolbar-border: rgba(255, 255, 255, .07);--composer-icon-bg: rgba(255, 255, 255, .05);--composer-icon-ink: rgba(240, 245, 242, .92);--composer-mode-ink: #9ac8ff;--composer-send-bg: #f8f8f4;--composer-send-ink: #15181b;--composer-footnote: rgba(151, 169, 162, .9);--rail-toggle-bg: linear-gradient(180deg, rgba(122, 202, 164, .96), rgba(81, 156, 129, .96));--rail-toggle-ink: #07100d;--rail-toggle-shadow: 0 16px 40px rgba(0, 0, 0, .28);--rail-body-bg: linear-gradient(180deg, rgba(17, 27, 34, .92), rgba(10, 17, 22, .96));--rail-body-border: rgba(224, 236, 230, .1);--rail-body-shadow: 0 28px 70px rgba(0, 0, 0, .34);--thread-button-bg: rgba(255, 255, 255, .05);--thread-button-border: rgba(224, 236, 230, .1);--thread-button-active-bg: rgba(122, 202, 164, .16);--thread-button-active-border: rgba(122, 202, 164, .28);--rail-tab-bg: rgba(255, 255, 255, .04);--rail-tab-border: rgba(224, 236, 230, .08);--rail-tab-accent: linear-gradient(180deg, rgba(255, 141, 109, .7), rgba(122, 202, 164, .68));--rail-empty-bg: rgba(255, 255, 255, .03);--rail-empty-border: rgba(224, 236, 230, .14);--connector-start: rgba(255, 141, 109, .44);--connector-end: rgba(122, 202, 164, .84);--connector-node: rgba(255, 141, 109, .56);--connector-node-active: rgba(122, 202, 164, .94);--tooltip-bg: linear-gradient(180deg, rgba(23, 33, 40, .98), rgba(14, 22, 28, .94));--tooltip-border: rgba(224, 236, 230, .12);--tooltip-shadow: 0 28px 56px rgba(0, 0, 0, .34);--selection-explain-bg: rgba(255, 255, 255, .06);--selection-explain-border: rgba(224, 236, 230, .12);--toggle-shadow: 0 16px 38px rgba(0, 0, 0, .24);--toggle-icon-bg: rgba(255, 255, 255, .07);--danger: #ff6f61;--danger-soft: rgba(255, 111, 97, .14);--danger-border: rgba(255, 111, 97, .3)}:root[data-theme=light]{color:#1f2a24;background:#ece4d6;color-scheme:light;--bg: #ece4d6;--bg-deep: #d8cbb3;--panel: rgba(250, 245, 236, .78);--panel-strong: rgba(248, 242, 231, .92);--line: rgba(31, 42, 36, .12);--line-strong: rgba(31, 42, 36, .22);--ink: #1f2a24;--muted: #59655e;--accent: #a94b32;--accent-soft: rgba(169, 75, 50, .14);--sage: #2e5947;--sage-soft: rgba(46, 89, 71, .12);--shadow: 0 24px 70px rgba(46, 41, 31, .12);--body-background: radial-gradient(circle at top left, rgba(255, 255, 255, .7), transparent 32%), radial-gradient(circle at 85% 15%, rgba(169, 75, 50, .14), transparent 20%), linear-gradient(140deg, #f4ecdf 0%, #ece4d6 46%, #e4dac7 100%);--shell-overlay: radial-gradient(circle at 18% 28%, rgba(46, 89, 71, .1), transparent 28%), radial-gradient(circle at 70% 80%, rgba(169, 75, 50, .12), transparent 26%);--button-surface: rgba(255, 255, 255, .45);--button-border: rgba(31, 42, 36, .12);--button-active-surface: rgba(46, 89, 71, .12);--button-active-border: rgba(46, 89, 71, .2);--primary-ink: #f7f3ea;--status-bg: rgba(255, 252, 247, .58);--status-border: rgba(31, 42, 36, .08);--status-shadow: 0 14px 34px rgba(46, 41, 31, .08);--breadcrumb-separator: rgba(31, 42, 36, .36);--focus-ring: rgba(46, 89, 71, .28);--scrollbar-thumb: rgba(31, 42, 36, .18);--panel-bg: linear-gradient(180deg, rgba(255, 255, 255, .58), rgba(248, 242, 231, .88)), var(--panel);--panel-border: rgba(31, 42, 36, .08);--panel-active-border: rgba(46, 89, 71, .16);--panel-active-shadow: 0 32px 90px rgba(46, 41, 31, .16), inset 0 1px 0 rgba(255, 255, 255, .6);--panel-head-bg: linear-gradient(180deg, rgba(251, 246, 238, .98), rgba(247, 241, 231, .92));--panel-head-border: rgba(31, 42, 36, .08);--badge-bg: rgba(255, 255, 255, .58);--badge-border: rgba(31, 42, 36, .08);--branch-card-bg: linear-gradient(135deg, rgba(169, 75, 50, .08), rgba(255, 255, 255, .42)), rgba(255, 250, 243, .72);--branch-card-border: rgba(31, 42, 36, .08);--branch-quote-border: rgba(169, 75, 50, .26);--assistant-bubble-bg: rgba(255, 255, 255, .62);--assistant-bubble-border: rgba(31, 42, 36, .08);--message-link: #255b8f;--message-inline-code-bg: rgba(31, 42, 36, .06);--message-inline-code-border: rgba(31, 42, 36, .1);--message-code-bg: rgba(255, 252, 247, .88);--message-code-border: rgba(31, 42, 36, .1);--message-code-label-bg: rgba(31, 42, 36, .08);--message-code-label-ink: rgba(31, 42, 36, .68);--message-quote-border: rgba(169, 75, 50, .3);--message-table-border: rgba(31, 42, 36, .12);--message-hr: rgba(31, 42, 36, .12);--user-bubble-bg: linear-gradient(135deg, rgba(46, 89, 71, .92), rgba(52, 72, 66, .88));--user-bubble-ink: #f8f4ed;--system-bubble-bg: rgba(169, 75, 50, .08);--system-bubble-border: rgba(169, 75, 50, .28);--message-anchor-bg: rgba(169, 75, 50, .18);--composer-bg: linear-gradient(180deg, rgba(245, 240, 232, .88), rgba(241, 235, 225, .98));--composer-border: rgba(31, 42, 36, .08);--composer-shell-bg: linear-gradient(180deg, #343231, #2f2d2c);--composer-shell-border: rgba(255, 255, 255, .06);--composer-shell-shadow: inset 0 1px 0 rgba(255, 255, 255, .04), 0 18px 36px rgba(31, 26, 22, .16);--composer-ink: rgba(248, 246, 242, .94);--composer-placeholder: rgba(240, 236, 229, .56);--input-bg: rgba(255, 255, 255, .82);--input-border: rgba(31, 42, 36, .12);--composer-toolbar-border: rgba(255, 255, 255, .08);--composer-icon-bg: rgba(255, 255, 255, .06);--composer-icon-ink: rgba(248, 246, 242, .9);--composer-mode-ink: #8fc0ff;--composer-send-bg: #f8f8f4;--composer-send-ink: #15181b;--composer-footnote: rgba(89, 101, 94, .88);--rail-toggle-bg: linear-gradient(180deg, rgba(46, 89, 71, .95), rgba(37, 70, 57, .95));--rail-toggle-ink: #f5efe5;--rail-toggle-shadow: 0 14px 34px rgba(46, 41, 31, .18);--rail-body-bg: linear-gradient(180deg, rgba(245, 239, 228, .88), rgba(236, 228, 214, .94));--rail-body-border: rgba(31, 42, 36, .1);--rail-body-shadow: 0 24px 60px rgba(46, 41, 31, .14);--thread-button-bg: rgba(255, 255, 255, .54);--thread-button-border: rgba(31, 42, 36, .1);--thread-button-active-bg: rgba(46, 89, 71, .12);--thread-button-active-border: rgba(46, 89, 71, .2);--rail-tab-bg: rgba(255, 255, 255, .44);--rail-tab-border: transparent;--rail-tab-accent: linear-gradient(180deg, rgba(169, 75, 50, .52), rgba(46, 89, 71, .52));--rail-empty-bg: rgba(255, 255, 255, .36);--rail-empty-border: rgba(31, 42, 36, .14);--connector-start: rgba(169, 75, 50, .42);--connector-end: rgba(46, 89, 71, .82);--connector-node: rgba(169, 75, 50, .54);--connector-node-active: rgba(46, 89, 71, .9);--tooltip-bg: linear-gradient(180deg, rgba(251, 247, 240, .98), rgba(245, 238, 228, .94));--tooltip-border: rgba(31, 42, 36, .12);--tooltip-shadow: 0 24px 48px rgba(46, 41, 31, .2);--selection-explain-bg: rgba(255, 255, 255, .72);--selection-explain-border: rgba(31, 42, 36, .12);--toggle-shadow: 0 14px 30px rgba(46, 41, 31, .08);--toggle-icon-bg: rgba(46, 89, 71, .12);--danger: #c64f39;--danger-soft: rgba(198, 79, 57, .12);--danger-border: rgba(198, 79, 57, .24)}.message-with-margin{display:flex;width:100%}.message-with-margin.is-user{justify-content:flex-end}.panel-body{container-type:inline-size;position:relative}.chat-panel.has-branch-margin .message-list{margin-left:auto;margin-right:auto;max-width:1040px;padding-right:272px;width:100%}.branch-margin-layer{inset:0;pointer-events:none;position:absolute;z-index:4}.branch-margin-item{display:contents}.branch-margin-connector{border-top:1.5px solid var(--accent);opacity:0;pointer-events:none;position:absolute}.branch-margin-connector.is-positioned{opacity:.78}.branch-margin-connector:before{background:var(--accent);border:2px solid var(--bg);border-radius:999px;content:"";height:9px;left:-4px;position:absolute;top:-5px;width:9px}.margin-thread-card{background:var(--panel-strong);border:1px solid var(--line);border-radius:12px;color:var(--ink);display:flex;flex-direction:column;gap:5px;min-width:0;opacity:0;padding:10px 11px;pointer-events:auto;position:absolute;text-align:left;visibility:hidden;width:220px}.margin-thread-card.is-positioned{opacity:1;visibility:visible}.margin-thread-card:hover,.margin-thread-card:focus-visible{background:var(--button-active-surface);border-color:var(--line-strong)}.margin-thread-card:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.margin-thread-label,.margin-thread-prompt,.margin-thread-open{color:var(--muted);font-size:.75rem}.panel-slot.is-main-view:has(.chat-panel.has-branch-margin){flex-basis:min(100%,1080px);max-width:1080px;width:min(100%,1080px)}@container (max-width: 759px){.chat-panel.has-branch-margin .message-list{padding-right:224px}.margin-thread-card{width:184px}}@container (max-width: 620px){.chat-panel.has-branch-margin .message-list{padding-right:26px}.branch-margin-layer{display:none}}.margin-thread-label{color:var(--accent-strong);font-weight:650}.margin-thread-card strong{font-size:.84rem;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.margin-thread-prompt{display:-webkit-box;line-height:1.4;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2}.margin-thread-open{color:var(--ink);font-weight:550;margin-top:2px}.conversation-canvas:not(.is-main-view){gap:0;padding-left:0;padding-right:0}.conversation-canvas:not(.is-main-view) .panel-slot{border-right:1px solid var(--line);flex:1 1 50%;max-width:none;min-width:360px;width:50%}.conversation-canvas:not(.is-main-view) .panel-slot:last-child{border-right:0}.panel-slot.is-split-context .panel-body{padding-top:44px}.panel-context-label{background:var(--bg);border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.74rem;font-weight:650;left:18px;letter-spacing:.05em;pointer-events:none;position:absolute;text-transform:uppercase;padding:5px 9px;top:9px;z-index:14}.branch-map-backdrop{display:none}.branch-map{background:var(--rail-body-bg);border-left:1px solid var(--line);display:flex;flex:0 0 248px;flex-direction:column;min-height:0;overflow:hidden;padding:16px 12px;width:248px}.branch-map-head{align-items:flex-start;display:flex;gap:10px;justify-content:space-between;padding:0 4px}.branch-map-head .eyebrow{margin:0 0 4px}.branch-map-head h2{font-size:.94rem;font-weight:650;margin:0}.branch-map-close{align-items:center;background:transparent;border:0;border-radius:7px;color:var(--muted);display:inline-flex;flex:0 0 auto;height:30px;justify-content:center;padding:0;width:30px}.branch-map-close:hover{background:var(--button-active-surface);color:var(--ink)}.branch-map-close:focus-visible,.branch-map-node:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.branch-map-close-icon{height:16px;width:16px}.branch-map-count{color:var(--muted);font-size:.75rem;margin:8px 4px 14px}.branch-map-tree{min-height:0;overflow-y:auto;padding:0 4px 20px;scrollbar-width:thin}.branch-map-tree ol{list-style:none;margin:0;padding:0}.branch-map-children{border-left:1px solid var(--line-strong);margin-left:7px!important;padding-left:12px!important}.branch-map-item{position:relative}.branch-map-item+.branch-map-item{margin-top:3px}.branch-map-node{align-items:flex-start;background:transparent;border:0;border-radius:8px;color:var(--muted);display:flex;gap:8px;padding:7px 6px;text-align:left;width:100%}.branch-map-node:hover,.branch-map-node.is-active{background:var(--button-active-surface);color:var(--ink)}.branch-map-node-dot{background:var(--rail-body-bg);border:2px solid var(--line-strong);border-radius:999px;flex:0 0 auto;height:10px;margin-top:4px;width:10px}.branch-map-item.is-on-path>.branch-map-node .branch-map-node-dot{border-color:var(--accent)}.branch-map-node.is-active .branch-map-node-dot{background:var(--accent);border-color:var(--accent)}.branch-map-node-copy{display:flex;flex-direction:column;gap:3px;min-width:0}.branch-map-node-copy strong,.branch-map-node-copy span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.branch-map-node-copy strong{color:inherit;font-size:.8rem;font-weight:550}.branch-map-node-copy span{color:var(--muted);font-size:.69rem}@media(max-width:900px){.chat-panel.has-branch-margin .message-list{padding-right:26px}.branch-margin-layer{display:none}.conversation-canvas:not(.is-main-view) .panel-slot{border-right:0;flex:1 1 100%;min-width:0;width:100%}.branch-map-backdrop{background:#0000007a;border:0;display:block;inset:0;padding:0;position:fixed;z-index:60}.branch-map{border:1px solid var(--line);border-radius:16px;bottom:10px;box-shadow:0 18px 52px #00000052;flex-basis:auto;left:10px;max-height:min(72vh,620px);padding:18px 14px calc(18px + env(safe-area-inset-bottom,0px));position:fixed;right:10px;width:auto;z-index:61}}*{box-sizing:border-box}html,body,#root{height:100%;min-height:100%}body{margin:0;color:var(--ink);background:var(--body-background);transition:background .22s ease,color .22s ease}button,textarea,input,select{font:inherit;color:inherit}button{cursor:pointer}::selection{background:var(--accent-soft);color:var(--ink)}.app-shell{height:100vh;height:100dvh;min-height:100vh;min-height:100dvh;position:relative;overflow:hidden}.app-shell:before{content:"";position:fixed;inset:0;background:var(--shell-overlay);pointer-events:none}.app-chrome{display:flex;height:100vh;height:100dvh;min-height:100vh;min-height:100dvh;width:100%;position:relative;margin:5px}.app-header{align-items:flex-start;display:flex;gap:24px;justify-content:space-between;margin:0 auto 22px;max-width:1500px}.app-header h1{font-family:Iowan Old Style,Palatino Linotype,Book Antiqua,serif;font-size:clamp(2.2rem,3vw,3.6rem);font-weight:600;letter-spacing:-.03em;line-height:.95;margin:8px 0 12px;max-width:11ch}.app-intro{color:var(--muted);font-size:1rem;line-height:1.6;margin:0;max-width:58ch}.eyebrow{color:var(--accent);font-size:.76rem;font-weight:700;letter-spacing:.16em;margin:0;text-transform:uppercase}.header-actions{display:flex;gap:12px;padding-top:8px}.secondary-button,.ghost-button,.primary-button,.rail-minimize-button,.main-thread-button,.rail-tab{border:0;transition:transform .16s ease,background-color .16s ease,border-color .16s ease,box-shadow .16s ease,color .16s ease}.secondary-button,.ghost-button,.primary-button,.rail-minimize-button,.main-thread-button{border-radius:999px}.secondary-button,.ghost-button{background:var(--button-surface);border:1px solid var(--button-border);color:var(--ink);padding:.82rem 1.1rem}.secondary-button.is-active{background:var(--button-active-surface);border-color:var(--button-active-border);color:var(--ink)}.secondary-button:hover,.ghost-button:hover,.main-thread-button:hover,.rail-tab:hover,.rail-minimize-button:hover{transform:translateY(-1px)}.primary-button{background:var(--sage);color:var(--primary-ink);padding:.82rem 1.1rem}.status-strip{display:grid;gap:14px;grid-template-columns:repeat(3,minmax(0,1fr));margin:0 auto 24px;max-width:1500px}.status-card{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:var(--status-bg);border:1px solid var(--status-border);border-radius:18px;box-shadow:var(--status-shadow);display:flex;flex-direction:column;gap:6px;min-height:92px;padding:16px 18px}.status-card strong{font-size:1rem;font-weight:600;line-height:1.4}.workspace{align-items:stretch;display:flex;flex:1;gap:18px;height:100%;min-height:0;position:relative;width:100%}.thread-sidebar{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:var(--rail-body-bg);border:1px solid var(--rail-body-border);border-radius:28px;box-shadow:var(--shadow);display:flex;flex:0 0 272px;flex-direction:column;gap:18px;width:272px;min-height:0;overflow:visible;padding:22px 18px 18px;position:relative;transition:flex-basis .22s ease,width .22s ease,padding .22s ease,gap .22s ease;z-index:15}.thread-sidebar.is-collapsed{align-items:center;flex-basis:104px;gap:14px;padding:18px 8px;width:104px}.thread-sidebar-head{align-items:flex-start;display:flex;gap:12px;justify-content:space-between}.thread-sidebar-title-row{align-items:center;display:flex;flex:1;gap:12px;margin:0;min-width:0}.thread-sidebar-head h2{font-family:Iowan Old Style,Palatino Linotype,Book 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