:root{--bg: #fcfcfb;--surface: #ffffff;--border: #e5e4e0;--border-strong: #d4d3ce;--ink: #1a1a18;--ink-2: #55534e;--ink-3: #8a877f;--accent: #0f6b47;--font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}#app{height:100%;display:flex;flex-direction:column}h1,h2{margin:0;font-weight:650;letter-spacing:-.02em}code{font-family:var(--font-mono);font-size:.85em}.btn{font-family:var(--font-body);font-size:.92rem;font-weight:550;background:var(--surface);border:1px solid var(--border-strong);border-radius:8px;color:var(--ink);padding:9px 16px;cursor:pointer;transition:border-color .12s,background 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.chat-col{display:flex!important;flex:1}.mobile-view-toggle.visible{display:flex}}.mobile-view-toggle{display:none;position:fixed;bottom:76px;left:16px;width:48px;height:48px;border-radius:50%;background:var(--accent);color:#fff;border:none;font-size:1rem;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 16px #00000040;z-index:100;transition:transform .15s,box-shadow .15s}.mobile-view-toggle:hover{transform:scale(1.08);box-shadow:0 6px 20px #0000004d}.mobile-view-toggle:active{transform:scale(.95)}.btn.video-on{background:var(--accent);border-color:var(--accent);color:#fff}