body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;max-width:960px;margin:24px auto;padding:0 16px;background:#111;color:#eee}
main{padding:18px}
textarea{width:100%;box-sizing:border-box;padding:8px;font-size:14px;background:#2a2a2a;color:#ddd;border:1px solid #444}
input[type=text]{width:240px;padding:6px;background:#2a2a2a;color:#ddd;border:1px solid #444}
button{padding:8px 12px;margin-top:8px}
ul{list-style:none;padding-left:0;margin-top:12px}
li{padding:12px 10px;border-bottom:1px solid rgba(255,255,255,0.05);display:flex;gap:12px;align-items:flex-start}

.avatar{width:48px;height:48px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff}
.content{flex:1}
.header{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.header strong{font-size:15px}
.timestamp{font-size:12px;color:#9a9a9a}
.codewrap{display:flex;gap:8px;align-items:flex-start}
pre{margin:0;background:#0f0f10;padding:10px;border-radius:6px;color:#cfcfcf;overflow:auto;max-width:100%}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Roboto Mono,monospace;font-size:13px;white-space:pre-wrap}
.copy-btn{padding:6px 8px;background:#2b2b2b;border:1px solid #444;color:#ddd;border-radius:4px;cursor:pointer}
.copy-btn:active{transform:translateY(1px)}

.item + .item{margin-top:8px}