.hero-chat { height: 540px; display: flex; flex-direction: column; background: #f6f7fa; text-align: left; }
.hero-chat-head { flex-shrink: 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 19px 22px; border-bottom: 1px solid #e2e7ef; background: #fff; }
.hero-chat-brand { display: flex; align-items: center; gap: 11px; }
.hero-chat-avatar { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 10px; background: #051c3b; color: white; }
.hero-chat-brand b { display: block; font-size: 15px; font-weight: 650; line-height: 1.4; color: #051c3b; }
.hero-chat-brand small { display: block; color: #8490a1; font-size: 11px; margin-top: 2px; }
.hero-chat-example { font-size: 10px; padding: 5px 8px; border: 1px solid #e4e9f0; border-radius: 7px; color: #78869a; white-space: nowrap; }
.hero-chat-feed { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; overflow-anchor: none; contain: layout paint; scrollbar-width: thin; scrollbar-color: #ccd5df transparent; padding: 18px 22px 25px; opacity: 1; transition: opacity 420ms ease; }
.hero-chat-feed:focus-visible { outline: 2px solid #178778; outline-offset: -3px; }
.hero-chat-feed.is-resetting { opacity: 0; }
.hero-chat-context { text-align: center; color: #8c97a6; font-size: 11px; margin-bottom: 24px; }
.hero-chat-message { margin-bottom: 23px; max-width: 96%; font-size: 15px; line-height: 1.65; color: #394d65; }
.hero-chat-message.is-entering { animation: hero-chat-message-in 600ms cubic-bezier(.22,1,.36,1) both; will-change: transform, opacity; }
.hero-chat-message header { display: flex; align-items: center; gap: 7px; margin-bottom: 7px; font-size: 11px; color: #8b97a8; }
.hero-chat-message header .site-icon { width: 13px; height: 13px; flex-basis: 13px; color: #234463; }
.hero-chat-message.from-user { margin-left: auto; }
.hero-chat-message.from-user header { justify-content: flex-end; }
.hero-chat-message.from-system { max-width: 100%; margin: 0 auto 20px; text-align: center; }
.hero-chat-message.from-system header { justify-content: center; margin-bottom: 5px; color: #82909f; }
.hero-chat-message.from-system .hero-chat-bubble { padding: 9px 13px; border-style: dashed; border-radius: 999px; background: #f1f5f7; color: #647789; font-size: 12px; line-height: 1.45; }
.hero-chat-bubble { border: 1px solid #dfe6ee; border-radius: 15px; background: #fff; padding: 16px 18px; }
.from-user .hero-chat-bubble { background: #edf2f8; border-top-right-radius: 5px; }
.from-assistant .hero-chat-bubble { border-top-left-radius: 5px; }
.hero-chat-bubble p { margin: 0; }
.hero-chat-artifact { display: flex; gap: 11px; align-items: flex-start; margin-top: 16px; padding: 13px; border: 1px solid #dcebe6; border-radius: 10px; background: #f5faf8; }
.hero-chat-artifact > .site-icon { color: #67888a; margin-top: 3px; }
.hero-chat-artifact > div { flex: 1; min-width: 0; }
.hero-chat-artifact b { display: block; font-size: 12px; color: #244b49; margin-bottom: 6px; font-weight: 600; }
.hero-chat-artifact div > span { display: block; font-size: 11px; color: #788d95; line-height: 1.7; }
.hero-chat-artifact .artifact-done { width: 14px; flex-basis: 14px; color: #178778; }
.hero-chat-system { flex: 0 0 auto; max-height: 0; margin: 0 15px; padding: 0 14px; overflow: hidden; border: 0 solid #dbe7e6; border-radius: 12px; background: #fff; opacity: 0; transform: translateY(9px); transition: max-height .5s cubic-bezier(.22,1,.36,1), padding .5s cubic-bezier(.22,1,.36,1), margin .5s cubic-bezier(.22,1,.36,1), opacity .35s ease, transform .5s cubic-bezier(.22,1,.36,1); }
.hero-chat-system.is-visible { max-height: 240px; margin: 0 15px 15px; padding: 11px 14px 10px; border-width: 1px; opacity: 1; transform: none; }
.hero-chat-system.is-resetting { opacity: 0; }
.hero-chat-system-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 7px; }
.hero-chat-system-head b { color: #163650; font-size: 11px; font-weight: 700; }
.hero-chat-system-state { color: #178778; font-size: 11px; font-weight: 650; white-space: nowrap; }
.hero-chat-system-scale { display: grid; grid-template-columns: repeat(3,1fr); margin: 0 0 7px 108px; color: #9ba8b4; font-size: 9px; }
.hero-chat-system-scale span:nth-child(2) { text-align: center; }
.hero-chat-system-scale span:last-child { text-align: right; }
.hero-chat-system-rows { display: grid; gap: 5px; }
.hero-chat-system-row { display: grid; grid-template-columns: 100px minmax(0,1fr); align-items: center; gap: 8px; }
.hero-chat-system-name { overflow: hidden; color: #607286; font-size: 10px; white-space: nowrap; text-overflow: ellipsis; }
.hero-chat-system-track { position: relative; height: 15px; overflow: hidden; border-radius: 4px; background: repeating-linear-gradient(to right,#e9eef2 0,#e9eef2 1px,transparent 1px,transparent 25%); background-color: #f5f8fa; }
.hero-chat-system-bar { position: absolute; top: 3px; bottom: 3px; left: var(--from); width: var(--from-width); border-radius: 3px; background: #97b9c4; transition: left .85s cubic-bezier(.22,1,.36,1), width .85s cubic-bezier(.22,1,.36,1), background .5s ease; }
.hero-chat-system-row:nth-child(2) .hero-chat-system-bar { background: #619ab4; }
.hero-chat-system-row:nth-child(3) .hero-chat-system-bar { background: #7cabb5; }
.hero-chat-system.is-replanned .hero-chat-system-bar { left: var(--to); width: var(--to-width); background: #279f91; }
.hero-chat-system.is-replanned .hero-chat-system-row:nth-child(2) .hero-chat-system-bar { background: #156e82; }
.hero-chat-system-summary { display: block; overflow: hidden; margin-top: 8px; color: #657b85; font-size: 10px; white-space: nowrap; text-overflow: ellipsis; }
.hero-chat-typing { display: flex; align-items: center; gap: 10px; color: #8996a7; font-size: 11px; min-height: 40px; padding-left: 6px; }
.hero-chat-dots { display: flex; align-items: center; gap: 4px; }
.hero-chat-dots i { width: 4px; height: 4px; border-radius: 50%; background: #5e928d; animation: hero-chat-dot 1300ms ease-in-out infinite; }
.hero-chat-dots i:nth-child(2) { animation-delay: 130ms; }
.hero-chat-dots i:nth-child(3) { animation-delay: 260ms; }
.hero-chat.is-paused .hero-chat-dots i { animation-play-state: paused; }
.hero-chat-foot { flex-shrink: 0; display: flex; justify-content: space-between; gap: 10px; border-top: 1px solid #e2e7ef; padding: 12px 20px; color: #8b97a6; background: #fff; font-size: 10px; }
.hero-chat-playback { white-space: nowrap; color: #6b8a88; }
.hero-chat [hidden] { display: none !important; }
@keyframes hero-chat-message-in { from { opacity: 0; transform: translateY(9px); } to { opacity: 1; transform: translateY(0); } }
@keyframes hero-chat-dot { 0%,70%,100% { opacity: .35; transform: translateY(0); } 35% { opacity: 1; transform: translateY(-3px); } }
@media (max-width: 760px) { .hero-chat { height: 560px; } .hero-chat-head { padding: 16px; } .hero-chat-feed { padding: 16px 14px 23px; } .hero-chat-message { font-size: 14px; max-width: 98%; } .hero-chat-bubble { padding: 14px; } .hero-chat-example { font-size: 9px; } .hero-chat-foot { flex-wrap: wrap; padding: 11px 14px; font-size: 9px; } .hero-chat-system { margin-left: 10px; margin-right: 10px; } .hero-chat-system.is-visible { margin-left: 10px; margin-right: 10px; } .hero-chat-system-row { grid-template-columns: 85px minmax(0,1fr); } .hero-chat-system-scale { margin-left: 93px; } }
@media (prefers-reduced-motion: reduce) { .hero-chat *, .hero-chat-feed { animation: none !important; transition: none !important; } }