/* Workspace-only layout. The public landing page keeps its scene styles. */
#chat.h-ready:not([hidden]){--h-side:246px;position:fixed;inset:0;height:100dvh;max-width:none;width:100%;padding:0;margin:0;background:white;color:#28282a;display:grid;grid-template-columns:var(--h-side) minmax(0,1fr);grid-template-rows:54px minmax(0,1fr);z-index:65;overflow:hidden;font:14px/1.65 system-ui,"Microsoft YaHei UI",sans-serif}
.h-rail{grid-column:1;grid-row:1/-1;display:flex;flex-direction:column;gap:4px;background:#f8f8fa;border-right:1px solid #ececef;padding:17px 12px;min-width:0}
.h-brand{font:650 17px/1.5 system-ui;letter-spacing:.06em;padding:0 9px 22px}
.h-rail button,.h-top button{color:inherit;background:transparent;border:0;border-radius:8px;text-align:left;cursor:pointer;padding:9px 10px;font:inherit}
.h-rail button:hover,.h-top button:hover{background:#ececf0}.h-rail small{padding:24px 10px 2px;color:#777981}.h-rail strong{padding:5px 10px;font-size:13px}.h-threads{overflow:auto;flex:1}.h-threads button{width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding-left:23px}.h-threads [aria-current=true]{background:#e9eaf0}.h-account{font-weight:600;padding:12px 10px 0;border-top:1px solid #e6e6ea}
.h-top{grid-column:2;grid-row:1;display:flex;align-items:center;gap:12px;padding:0 160px 0 18px;min-width:0}.h-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:550}.h-top span{margin-left:auto;font-size:12px;color:#6a6d78}
#chat.h-ready .chat-toolbar{position:absolute;inset:8px 12px auto auto;width:auto;height:auto;border:0;padding:0;background:none;display:flex;gap:6px}.h-ready .workspace-nav,.h-ready .chat-user b{display:none!important}.h-ready .chat-toolbar button{font-size:12px}
#chat.h-ready .chat-main:not([hidden]){grid-column:2;grid-row:2;display:flex;flex-direction:column;min-height:0;width:min(100%,900px);max-width:none;margin:0 auto;padding:0 26px 12px;overflow:hidden}
#chat.h-ready .chat-welcome:not([hidden]){margin:auto 0 24px;padding:0;text-align:left}
#chat.h-ready .chat-welcome svg{width:30px;height:30px}#chat.h-ready .chat-welcome h1{font:600 clamp(23px,3vw,32px)/1.45 system-ui;letter-spacing:-.04em}#chat.h-ready .chat-welcome p{display:none}
#chat.h-ready #messages{overflow-y:auto;min-height:0;flex:1;margin:0;padding:8px 4px 18px;scrollbar-width:thin}
#chat.h-ready #messages:empty{display:none}
#chat.h-ready .bubble{max-width:100%;margin:12px 0;border:0;box-shadow:none;line-height:1.8}
#chat.h-ready .bubble.user{background:#f3f4f6;border-radius:15px;width:fit-content;margin-left:auto;max-width:85%;padding:9px 15px}
#chat.h-ready .bubble.assistant{background:none;padding:9px 0}#chat.h-ready .answer-label{color:#565c74;font-weight:600}
#chat.h-ready #composer{position:static;flex:none;background:white;border:1px solid #d8d9e0;border-radius:18px;box-shadow:0 3px 14px #1e274008;padding:12px;margin:0;width:100%}
#chat.h-ready #composer textarea{display:block;border:0;outline:none;width:100%;min-height:58px;height:58px;background:transparent;padding:4px 6px;font:inherit;resize:none}
#chat.h-ready #composer>div{display:flex;align-items:center;gap:6px}#chat.h-ready #composer button{border-radius:10px;font-size:13px}#chat.h-ready #composer button[type=submit]{margin-left:auto;height:auto;min-height:32px;background:#465ad6;color:white;padding:5px 14px}
#chat.h-ready .composer-note{font-size:11px;text-align:center;margin:6px 0;color:#777}#chat.h-ready .chat-main:has(#messages:empty) .composer-note{margin-bottom:auto}
#chat.h-ready .project-shell:not([hidden]){grid-column:2;grid-row:2;overflow:auto;padding:16px 24px}
#chat.h-ready.rail-open{--h-side:0px}#chat.h-ready.rail-open .h-rail{visibility:hidden}
@media(max-width:720px){#chat.h-ready:not([hidden]){--h-side:0px}.h-rail{visibility:hidden}#chat.h-ready.rail-open .h-rail{visibility:visible;position:absolute;inset:54px auto 0 0;width:min(270px,85vw);z-index:4;box-shadow:10px 0 30px #0002}.h-top{padding-left:5px;padding-right:125px}.h-top span{display:none}#chat.h-ready .chat-main:not([hidden]){padding:0 12px 8px}#chat.h-ready .project-shell:not([hidden]){padding:6px}#chat.h-ready #composer textarea{font-size:16px}}

#chat.h-ready #composer{position:relative}
#chat.h-ready #composer>.h-pop:not([hidden]){position:absolute;left:0;right:0;bottom:calc(100% + 5px);z-index:4;display:grid;background:white;border-radius:12px;padding:4px;border:1px solid #ddd;box-shadow:0 8px 22px #0001}
#chat.h-ready #composer>.h-pop[hidden]{display:none}
.h-pop button{border:0;background:none;text-align:left}.h-pop [aria-selected=true]{background:#edf0ff}