html[data-design="quiet-focus"]{--muted:var(--ink2);--navy:var(--ink);--teal:var(--c1);--soft:var(--c1-soft);--white:var(--card)}
.topbar{background:var(--card);color:var(--ink);border-bottom:1px solid var(--line);height:76px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800}.brand small{color:var(--ink3);font-size:11px}.site-logo{color:var(--c1);font-size:34px;line-height:1}.site-utils{display:flex;gap:16px;align-items:center;font-size:12px}.site-utils a{text-decoration:none;color:var(--ink2)}.site-utils button{border:1px solid var(--line);background:var(--card);color:var(--ink2);padding:7px 10px;border-radius:10px;font-size:11px}
body,.shell{background:var(--bg)}.shell{min-height:calc(100vh - 76px)}aside.menu{background:var(--card)}.navbutton.active{background:var(--c1-soft);color:var(--c1)}.navbutton small,.menu-label,.navnote,.navnote b{color:var(--ink3)}.chat-intro{border-color:var(--line);background:var(--c1-soft);border-radius:20px}.chat-intro p{color:var(--ink2)}.chat-intro h2{color:var(--ink)}.chat-panel,.chat-composer,.chat-bubble,.chat-fact,.workcard,.record,.rulecard,.info-panel,.chip,.export,.searchbox,.pagination button,.memo-panel{background:var(--card);border-color:var(--line);color:var(--ink)}.chat-panel,.chat-composer{border-radius:18px}.chat-bubble.user,.chat-fact,.calc-tile,.versionbox,.summaryline,.statusitem,.questionbox{background:var(--c1-soft);color:var(--ink)}.chat-bubble small,.chat-mode-note,.chat-quote,.chat-fact span,.chat-composer span,.mini,.intro,.record .preview{color:var(--ink2)}.chat-options button,.case-choice,.case-control,select,input[type=date],.chat-answer-form input{background:var(--card);border-color:var(--line);color:var(--ink)}.solid{background:var(--c1);color:var(--bg);border-color:var(--c1)}.conclusion{background:var(--c1-soft);border-color:var(--c1)}.conclusion.pending,.result-state.pending,.detail-note{background:var(--warn-soft);color:var(--warn);border-color:var(--warn)}.badge{background:var(--c1-soft);color:var(--c1)}.chat-error{color:var(--err)}.chat-result textarea,.memo-panel textarea{background:var(--card);color:var(--ink);border-color:var(--line)}.excerpt{background:var(--c1-soft);border-color:var(--line)}.record:hover,.workcard:hover,.rulecard:hover{background:var(--c1-soft);border-color:var(--c1)}.gridtable th{background:var(--c1-soft);color:var(--ink2)}.dialoghead{background:var(--card)}dialog,.dialogbody,.close{background:var(--card);color:var(--ink)}
@media(max-width:760px){.topbar{height:62px;padding:0 15px}.brand{gap:7px;font-size:16px}.site-logo{font-size:28px}.brand small{display:none}.site-utils{gap:10px;font-size:11px}.site-utils a:first-child{display:none}.site-utils button{font-size:10px;padding:6px 8px}.shell{min-height:calc(100vh - 62px)}.chat-intro,.chat-panel,.chat-composer{border-radius:15px}.chat-intro h2{font-size:19px}.chat-composer textarea{font-size:16px}.chat-composer>div{gap:9px}.chat-composer span{max-width:58%}}

@media(max-width:760px){.menu nav{scrollbar-width:none}.menu nav::-webkit-scrollbar{display:none}}

@media(min-width:761px){aside.menu{position:sticky;top:0;align-self:start;min-height:calc(100vh - 76px);max-height:100vh;overflow-y:auto}.menu nav{position:static}}

/* Simple question-first layout. Existing tools stay in an explicit disclosure. */
.shell{display:block;max-width:960px;margin:auto}
main{padding:36px 28px;max-width:860px;margin:auto}
.topbar{height:64px;padding:0 28px}
.tools-menu{margin:0 0 24px;border-bottom:1px solid var(--line);padding:0 0 14px}
.tools-menu>summary{font-size:12px;color:var(--ink2);width:fit-content;min-height:32px;padding:5px 0}
.tools-menu aside.menu{position:static;min-height:0;max-height:none;border:0;padding:8px 0 0;background:transparent}
.tools-menu .menu nav{position:static;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px}
.tools-menu .menu-label,.tools-menu .navnote,.tools-menu .navbutton small{display:none}
.tools-menu .navbutton{margin:0;padding:10px 12px;font-size:12px}
.chat-mode .pagehead{margin-bottom:8px}
.chat-mode .eyebrow,.chat-mode #pageIntro,.chat-mode #exportAll{display:none}
.chat-mode h1{font-size:28px;letter-spacing:-1px}
.chat-lead{font-size:15px;color:var(--ink2);margin:0 0 20px;line-height:1.7}
.chat-top{margin-bottom:14px}
.chat-top .badge{background:transparent;padding:0;font-size:11px;color:var(--ink3);font-weight:400}
.chat-composer{padding:20px;border-radius:14px;box-shadow:none}
.chat-composer label{font-size:12px;color:var(--ink2)}
.chat-composer textarea{min-height:136px;font-size:16px;line-height:1.8;padding-top:10px}
.chat-composer .solid{min-height:44px;padding:10px 20px;border-radius:9px}
.chat-composer span{font-size:11px}
.chat-messages:empty,.chat-workspace:empty{display:none}
.chat-samples,.chat-how{border:0;border-top:1px solid var(--line);padding:14px 0;margin:0}
.chat-samples>summary,.chat-how>summary{font-size:12px;color:var(--ink2);padding:4px 0}
.chat-samples .chat-examples{margin:14px 0 8px}
.chat-samples .chat-mode-note{margin:8px 0}
.chat-mode .method{margin-top:0;font-size:12px}
.chat-mode footer{margin-top:12px}
@media(max-width:760px){
 .topbar{height:58px;padding:0 16px}
 main{padding:26px 18px}
 .shell{min-height:calc(100vh - 58px)}
 .tools-menu .menu nav{display:grid;overflow:visible;grid-template-columns:repeat(2,minmax(0,1fr))}
 .chat-mode h1{font-size:25px}
 .chat-lead{font-size:14px}
 .chat-composer{padding:16px}
 .chat-composer textarea{min-height:150px}
 .chat-composer>div{align-items:center}
 .chat-composer span{max-width:55%;line-height:1.6}
}