:root{--bg:#f6f7f9;--fg:#1c2330;--muted:#5d6675;--line:#d9dee6;--card:#fff;--accent:#1f5fbf;--accent-fg:#fff;--warn:#b54708;--err:#b42318;--ok:#0f7a4a;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--fg);background:var(--bg);min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.top{display:flex;align-items:center;gap:1.5rem;padding:.6rem 1.2rem;background:#fff;border-bottom:1px solid var(--line)}
.brand{font-weight:700;color:var(--fg)}.nav{display:flex;gap:1rem}.logout{margin-left:auto;display:flex;gap:.6rem;align-items:center}.who{color:var(--muted);font-size:.9rem}
.main{flex:1;width:100%;max-width:1240px;margin:0 auto;padding:1.2rem}
.foot{color:var(--muted);font-size:.8rem;padding:.6rem 1.2rem;border-top:1px solid var(--line)}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:1.2rem;margin-bottom:1rem}.narrow{max-width:520px;margin:3rem auto}
h1{font-size:1.5rem;margin:.2rem 0 .8rem}h2{font-size:1.15rem;margin:1rem 0 .5rem}h3{font-size:1rem;margin:.8rem 0 .4rem}
.muted{color:var(--muted)}.err{color:var(--err)}.ok{color:var(--ok)}.small{font-size:.85rem}
.btn{display:inline-block;padding:.45rem .9rem;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--fg);cursor:pointer;font:inherit}
.btn:hover{background:#f0f2f5;text-decoration:none}.btn-primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.btn-primary:hover{background:#174a96}
.btn-quiet{border-color:transparent;background:transparent;color:var(--muted)}.btn-danger{color:var(--err)}
.flash{background:#e6f4ea;border:1px solid #b7dfc2;border-radius:6px;padding:.6rem .9rem;margin-bottom:1rem}.flash-err{background:#fdecec;border-color:#f5bcbc}.flash ul{margin:0;padding-left:1.2rem}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:1rem;color:var(--fg)}.tile:hover{border-color:var(--accent);text-decoration:none}.tile h3{margin:0 0 .3rem}
.workspace{display:grid;grid-template-columns:260px 1fr;gap:1rem;align-items:start}.tree{position:sticky;top:1rem}
.tree h3{margin:.8rem 0 .3rem;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.tree ul{list-style:none;margin:0;padding:0}.tree li{padding:.15rem 0}.tree .cur{font-weight:600}
@media (max-width:800px){.workspace{grid-template-columns:1fr}.tree{position:static}}
form.stack{display:grid;gap:.6rem}label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:.15rem}
input[type=text],input[type=search],select,textarea{width:100%;padding:.45rem .6rem;border:1px solid var(--line);border-radius:6px;font:inherit;background:#fff}textarea{min-height:8rem;font-family:var(--mono);font-size:.9rem}
.row{display:flex;gap:.6rem;flex-wrap:wrap;align-items:center}.row>*{flex:1}.row .fix{flex:0 0 auto}
table{border-collapse:collapse;width:100%}th,td{text-align:left;padding:.4rem .5rem;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.badge{display:inline-block;padding:.05rem .5rem;border-radius:999px;font-size:.75rem;background:#eef1f5;color:var(--muted)}.badge-accepted{background:#e6f4ea;color:var(--ok)}.badge-rejected{background:#fdecec;color:var(--err)}.badge-superseded{background:#fff4e5;color:var(--warn)}.badge-proposed{background:#e8f0fb;color:var(--accent)}
.doc{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:1.4rem 1.8rem}.doc pre{background:#f3f5f8;padding:.7rem;border-radius:6px;overflow:auto}.doc code{font-family:var(--mono);font-size:.9em}.doc table{width:auto}.doc img{max-width:100%}
.doc-head{display:flex;gap:.8rem;align-items:baseline;flex-wrap:wrap;margin-bottom:.6rem}.doc-head h1{margin:0;flex:1}
.toc{font-size:.85rem}.toc ul{list-style:none;padding-left:.8rem;margin:0}
.editor-wrap{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media (max-width:1000px){.editor-wrap{grid-template-columns:1fr}}
.CodeMirror{border:1px solid var(--line);border-radius:6px;height:70vh;font-family:var(--mono);font-size:.9rem;background:#fff}
.preview{border:1px solid var(--line);border-radius:6px;background:#fff;padding:1rem;height:70vh;overflow:auto}
.diff{font-family:var(--mono);font-size:.85rem;white-space:pre-wrap;background:#fff;border:1px solid var(--line);border-radius:6px;padding:.8rem;overflow:auto}
.diff .add{background:#e6f4ea;color:#0f5132;display:block}.diff .del{background:#fdecec;color:#7a1f1f;display:block}.diff .hdr{color:var(--muted);display:block}
.conflict{border-color:var(--warn)}.conflict h1{color:var(--warn)}
.mermaid{background:#fff;text-align:center;overflow:auto}
.kv{display:grid;grid-template-columns:max-content 1fr;gap:.3rem 1rem}.kv dt{color:var(--muted)}.kv dd{margin:0}
.draft-note{font-size:.8rem;color:var(--warn)}