:root{--bg: #f6f5f2;--surface: #ffffff;--text: #1d1d1f;--muted: #6b6b70;--line: #e2e0da;--accent: #2f5d8a;--flash: #fff4c2;--code: #f0eee8;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #16171a;--surface: #1f2024;--text: #e8e8ea;--muted: #9a9aa2;--line: #34353b;--accent: #8db8e6;--flash: #4a4220;--code: #2a2b30}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 system-ui,-apple-system,Hiragino Sans,Noto Sans JP,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1{font-size:1.35rem;line-height:1.4;margin:.3rem 0 .4rem}h2{font-size:1rem;margin:0 0 .6rem}.top{position:sticky;top:0;z-index:1;display:flex;align-items:baseline;gap:.75rem;padding:.6rem max(1rem,env(safe-area-inset-left));background:color-mix(in srgb,var(--bg) 92%,transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}.brand{font-weight:700;color:var(--text)}.me{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:40vw}main{max-width:760px;margin:0 auto;padding:1rem 1rem 4rem}.spacer{flex:1}.muted{color:var(--muted)}.small{font-size:.82rem}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.error{color:#c0392b}.row{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem}.about{margin:.3rem 0;color:var(--muted);font-size:.92rem}.badge{margin-left:.5rem;padding:0 .45rem;border-radius:999px;font-size:.72rem;font-weight:500;vertical-align:.15em;border:1px solid var(--line);color:var(--muted)}button.link{padding:0;border:0;background:none;cursor:pointer;color:var(--accent);font:inherit}.cards,.messages,.files,.plain{list-style:none;margin:0;padding:0}.cards{display:grid;grid-template-columns:minmax(0,1fr);gap:.75rem}.card{display:block;padding:.9rem 1rem;background:var(--surface);border:1px solid var(--line);border-radius:10px;color:var(--text)}.card:hover{text-decoration:none;border-color:var(--accent)}.card-title{font-weight:600}.member{margin-right:.25rem}.who{font-weight:600;font-size:.85rem}.tone-0{color:#b5532b}.tone-1{color:#2f7d4f}.tone-2{color:#6a4bb0}.tone-3{color:#2f6fa8}.tone-4{color:#a3395f}.tone-5{color:#7a6a1e}@media(prefers-color-scheme:dark){.tone-0{color:#f0a17c}.tone-1{color:#7fd09f}.tone-2{color:#b9a2f0}.tone-3{color:#8cc3f0}.tone-4{color:#f09ab9}.tone-5{color:#e0cf75}}.room-head{margin-bottom:.5rem}.tabs{display:flex;gap:1.25rem;margin:.5rem 0 1rem;border-bottom:1px solid var(--line)}.tabs a{padding:.35rem 0;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}.tabs a.on{color:var(--text);border-color:var(--text);font-weight:600}.tabs a:hover{text-decoration:none;color:var(--text)}.toolbar{margin-bottom:.5rem}.messages{display:grid;grid-template-columns:minmax(0,1fr);gap:.9rem}.message{padding:.85rem 1rem .9rem;background:var(--surface);border:1px solid var(--line);border-radius:10px;scroll-margin-top:4rem;transition:background .6s}.message.flash{background:var(--flash)}.msg-head{gap:.6rem}.subject{font-weight:600;margin-top:.15rem}.reply{display:block;margin-top:.15rem;text-align:left}.body.folded{max-height:14rem;overflow:hidden;-webkit-mask-image:linear-gradient(#000 70%,transparent);mask-image:linear-gradient(#000 70%,transparent)}.unfold{margin-top:.25rem}.files{margin-top:.6rem;display:grid;gap:.3rem}.file{padding:.35rem .6rem;border-radius:6px;cursor:pointer;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit;font-size:.88rem;text-align:left}.file:hover{border-color:var(--accent)}.panel{margin:1rem 0;padding:.9rem 1rem;background:var(--surface);border:1px solid var(--line);border-radius:10px}.plain li{padding:.15rem 0}.versions li.on{font-weight:600}.doc-meta{margin-bottom:.75rem}.note{padding:.4rem .7rem;border-left:3px solid var(--line);color:var(--muted)}.md{overflow-wrap:anywhere}.md>:first-child{margin-top:.3rem}.md>:last-child{margin-bottom:0}.md h1,.md h2,.md h3,.md h4{font-size:1.02rem;margin:1.1rem 0 .4rem}.md h1{font-size:1.12rem}.md p,.md ul,.md ol,.md blockquote,.md pre{margin:.55rem 0}.md ul,.md ol{padding-left:1.4rem}.md blockquote{padding:.1rem .8rem;border-left:3px solid var(--line);color:var(--muted)}.md code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.86em;background:var(--code);padding:.05rem .3rem;border-radius:4px}.md pre{overflow-x:auto;background:var(--code);padding:.7rem .85rem;border-radius:8px;line-height:1.5}.md pre code{background:none;padding:0}.md hr{border:0;border-top:1px solid var(--line);margin:1rem 0}.md-table{overflow-x:auto;margin:.6rem 0}.md table{border-collapse:collapse;font-size:.88rem;line-height:1.55}.md th,.md td{border:1px solid var(--line);padding:.3rem .55rem;vertical-align:top}.md th{background:var(--code);text-align:left}.md-img{font-size:.85rem}.button{padding:.3rem .7rem;border-radius:6px;cursor:pointer;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit}.button:hover{border-color:var(--accent)}body.peeking{overflow:hidden}.peek-backdrop{position:fixed;inset:0;z-index:10;display:flex;justify-content:flex-end;background:#00000040}.peek{display:flex;flex-direction:column;width:min(760px,100%);height:100%;background:var(--surface);border-left:1px solid var(--line);box-shadow:-8px 0 24px #0000001f;animation:peek-in .18s ease-out}@media(min-width:1200px){.peek{width:55vw;max-width:980px}}@keyframes peek-in{0%{transform:translate(32px);opacity:.6}to{transform:none;opacity:1}}@media(prefers-reduced-motion:reduce){.peek{animation:none}}.peek-head{display:flex;align-items:center;gap:.6rem;padding:max(.7rem,env(safe-area-inset-top)) 1rem .7rem;border-bottom:1px solid var(--line)}.peek-title{flex:1;min-width:0;line-height:1.4}.peek-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.peek-close{padding:.1rem .45rem;border:0;background:none;cursor:pointer;color:var(--muted);font-size:1.5rem;line-height:1}.peek-close:hover{color:var(--text)}.peek-error{margin:.5rem 1rem 0}.peek-body{flex:1;overflow:auto;overscroll-behavior:contain;padding:1rem 1rem max(1rem,env(safe-area-inset-bottom))}.peek-image{display:block;max-width:100%;height:auto;margin:0 auto}.peek-video{display:block;width:100%;max-height:80vh;background:#000;border-radius:6px}.peek-text{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font:.85rem/1.6 ui-monospace,SFMono-Regular,Menlo,monospace}