:root{--bg:#f4f3ee;--card:#fff;--ink:#222;--mute:#6b6b63;--line:#e0ded4;--green:#2f7d4f;--warn:#b4571b}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
button,input,textarea{font:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px 40px}
header.top{display:flex;align-items:center;gap:12px;padding:14px 0;flex-wrap:wrap}
header.top h1{font-size:20px;margin:0;flex:1}
.who{color:var(--mute);font-size:14px}
.btn{background:var(--green);color:#fff;border:0;border-radius:10px;padding:10px 16px;cursor:pointer;min-height:44px}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.small{padding:4px 10px;min-height:32px;font-size:14px}
.btn.danger{color:#a22;}
.btn:disabled{opacity:.5}
.center{max-width:380px;margin:12vh auto;padding:24px 16px;text-align:center}
.center h1{margin-bottom:4px}
.center input{width:100%;padding:14px;font-size:20px;text-align:center;letter-spacing:2px;border:2px solid var(--line);border-radius:12px;margin:16px 0;text-transform:uppercase}
.err{color:#a22;min-height:1.4em}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.card{background:var(--card);border-radius:14px;overflow:hidden;border:1px solid var(--line);cursor:pointer;display:flex;flex-direction:column}
.card .img{aspect-ratio:4/3;background:#ddd center/cover no-repeat;display:flex;align-items:center;justify-content:center;font-size:42px;position:relative}
.card .meta{padding:10px 12px}
.card .meta b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card .meta span{color:var(--mute);font-size:13px}
.badge{position:absolute;top:8px;right:8px;background:var(--warn);color:#fff;border-radius:99px;padding:2px 10px;font-size:13px}
.empty{text-align:center;color:var(--mute);padding:60px 0}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:16px;align-items:start}
@media(max-width:860px){.layout{grid-template-columns:1fr}}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.stage{position:relative;background:#222;border-radius:12px;overflow:hidden;line-height:0;user-select:none;-webkit-user-select:none}
.stage img{width:100%;display:block}
.stage.placing{cursor:crosshair;outline:3px solid var(--warn)}
.stage svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.dot{position:absolute;width:14px;height:14px;border-radius:50%;border:2px solid #fff;transform:translate(-50%,-50%);pointer-events:none;box-shadow:0 0 0 1px rgba(0,0,0,.4)}
.abox{position:absolute;transform:translate(-50%,-50%);background:#fff;border:2px solid;border-radius:8px;padding:4px 8px 4px 6px;font-size:13px;line-height:1.3;max-width:42%;min-width:60px;display:flex;gap:6px;align-items:flex-start;cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,.3);z-index:2}
.abox.mine{touch-action:none;cursor:grab}
.abox.active{z-index:5;box-shadow:0 0 0 3px rgba(255,255,255,.9),0 2px 10px rgba(0,0,0,.5)}
.abox.resolved{opacity:.55}
.abox .n{color:#fff;border-radius:99px;min-width:20px;height:20px;text-align:center;font-size:12px;line-height:20px;flex:none}
.abox .t{overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;word-break:break-word}
.hint{background:#fff3e6;border:1px solid #f0c9a0;color:#7a3b0c;padding:10px 12px;border-radius:10px;margin-bottom:10px}
.panel{display:flex;flex-direction:column;gap:12px}
.thread{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px}
.thread.active{border-color:var(--ink);box-shadow:0 0 0 2px var(--ink)}
.thread.resolved{opacity:.65}
.thread .head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.thread .head .n{color:#fff;border-radius:99px;min-width:22px;height:22px;text-align:center;font-size:13px;line-height:22px;padding:0 4px}
.thread .head .tools{margin-left:auto;display:flex;gap:4px}
.msg{padding:8px 0;border-top:1px solid var(--line)}
.msg:first-of-type{border-top:0}
.msg .by{font-size:13px;font-weight:600}
.msg .when{font-weight:400;color:var(--mute);margin-left:6px}
.msg .body{white-space:pre-wrap;word-break:break-word}
.msg.new{background:#fffbe0;margin:0 -8px;padding:8px}
.att img{max-width:100%;max-height:220px;border-radius:8px;margin-top:6px;display:block}
.att a.file{display:inline-block;margin-top:6px;padding:6px 10px;background:#eee;border-radius:8px;color:var(--ink);text-decoration:none;font-size:14px}
.reply{display:flex;flex-direction:column;gap:6px;margin-top:8px}
textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px;resize:vertical;min-height:44px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.fname{font-size:13px;color:var(--mute);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:160px}
.composer{background:var(--card);border:2px solid var(--green);border-radius:12px;padding:12px}
.docbox{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:30px;text-align:center}
.small-note{color:var(--mute);font-size:13px}
.busy{position:fixed;inset:0;background:rgba(255,255,255,.7);display:flex;align-items:center;justify-content:center;font-size:18px;z-index:50}