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60px);overflow:hidden}.chat-page-body{flex:1;overflow:hidden;max-width:1100px;width:100%;margin:0 auto;padding:12px 20px;display:grid;grid-template-columns:1fr 320px;gap:16px;align-items:start}.chat-window{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);background:var(--bg)}.chat-messages{height:calc(100vh - 170px);overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px;background:var(--bg2)}.chat-msg{display:flex}.chat-msg--user{justify-content:flex-end}.chat-msg--assistant{justify-content:flex-start}.chat-bubble{max-width:75%;padding:8px 12px;border-radius:14px;font-size:13px;line-height:1.5;white-space:pre-wrap}.chat-msg--user .chat-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.chat-msg--assistant .chat-bubble{background:var(--bg);border:1px solid var(--border);color:var(--text);border-bottom-left-radius:4px}.chat-typing{letter-spacing:4px;opacity:.5;animation:blink 1s 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768px){.chat-messages{height:45vh}.chat-bubble{max-width:90%}.chat-page-body{grid-template-columns:1fr;overflow-y:auto}.chat-page{height:auto}.chat-lead-panel{position:static}}.demo-page{min-height:100vh;background:var(--bg);display:flex;flex-direction:column}.demo-loading{align-items:center;justify-content:center}.demo-spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.demo-error{align-items:center;justify-content:center;gap:16px;color:var(--muted);padding:40px 20px}.demo-nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}.demo-back-link{color:var(--muted);text-decoration:none;font-size:.9rem}.demo-back-link:hover{color:var(--accent)}.demo-brand{font-weight:600;color:var(--accent);font-size:.95rem}.demo-content{flex:1;max-width:600px;margin:0 auto;padding:32px 20px 60px;width:100%;display:flex;flex-direction:column;align-items:center;gap:8px}.demo-title{font-size:1.7rem;font-weight:700;text-align:center;color:var(--text)}.demo-tagline{font-size:1.05rem;color:var(--muted);text-align:center;max-width:480px}.explainer-scene{width:100%;display:flex;flex-direction:column;align-items:center;gap:16px;margin-top:16px}.explainer-progress{width:100%;max-width:360px;height:4px;background:var(--border);border-radius:2px;overflow:hidden}.explainer-progress-bar{height:100%;background:var(--accent);border-radius:2px;transition:width .5s ease}.explainer-frame{display:flex;flex-direction:column;align-items:center;gap:20px;width:100%}.explainer-lottie{width:360px;height:360px;flex-shrink:0}.explainer-lottie-fallback{width:360px;height:360px;background:var(--bg3);border-radius:16px}.explainer-text{font-size:1.25rem;font-weight:500;text-align:center;color:var(--text);max-width:460px;line-height:1.4}.explainer-dots{display:flex;gap:8px;margin-top:4px}.explainer-dot{width:8px;height:8px;border-radius:50%;background:var(--border);transition:all .3s}.explainer-dot.active{background:var(--accent);transform:scale(1.3)}.explainer-dot.done{background:var(--accent);opacity:.4}.demo-chat-section{width:100%;margin-top:24px}.demo-chat-heading{font-size:1rem;font-weight:600;color:var(--muted);margin-bottom:12px;text-align:center}.demo-chat{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg2);box-shadow:var(--shadow)}.demo-chat-messages{min-height:200px;max-height:320px;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}.demo-chat-hint{color:var(--muted);font-size:.9rem;text-align:center;margin-top:60px}.demo-msg{display:flex}.demo-msg-user{justify-content:flex-end}.demo-msg-assistant{justify-content:flex-start}.demo-msg-bubble{max-width:80%;padding:8px 14px;border-radius:12px;font-size:.95rem;line-height:1.4}.demo-msg-user .demo-msg-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.demo-msg-assistant .demo-msg-bubble{background:#fff;color:var(--text);border:1px solid var(--border);border-bottom-left-radius:4px}.demo-typing{display:flex;align-items:center;gap:4px;padding:10px 14px}.demo-typing span{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:typing-dot 1s infinite}.demo-typing span:nth-child(2){animation-delay:.15s}.demo-typing span:nth-child(3){animation-delay:.3s}@keyframes typing-dot{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}.demo-chat-form{display:flex;border-top:1px solid var(--border);background:#fff}.demo-chat-input{flex:1;padding:12px 16px;border:none;outline:none;font-size:.95rem;background:transparent;color:var(--text)}.demo-chat-send{padding:12px 20px;background:var(--accent);color:#fff;border:none;cursor:pointer;font-size:1.1rem;transition:background .2s}.demo-chat-send:hover:not(:disabled){background:var(--accent-hover)}.demo-chat-send:disabled{opacity:.5;cursor:not-allowed}.demo-limit-reached{padding:12px 16px;background:var(--bg3);border-top:1px solid var(--border);font-size:.9rem;color:var(--muted);text-align:center}.demo-cta-section{width:100%;margin-top:32px;display:flex;justify-content:center}.demo-cta-btn{display:inline-block;padding:14px 36px;background:var(--accent);color:#fff;border-radius:8px;font-size:1.1rem;font-weight:600;text-decoration:none;transition:background .2s,transform .15s;box-shadow:0 2px 8px #2563eb4d}.demo-cta-btn:hover{background:var(--accent-hover);transform:translateY(-1px)}@media (max-width: 500px){.explainer-lottie{width:240px;height:240px}.demo-title{font-size:1.4rem}.explainer-text{font-size:1.1rem}}