:root{
  --bg:#f0f2f5;
  --card:#fff;
  --text:#1c1e21;
  --muted:#65676b;
  --line:#e4e6eb;
  --blue:#1877f2;
  --radius:14px;
  --shadow:0 8px 24px rgba(0,0,0,.10);
  --max:980px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}

.topbar{
  position:sticky;top:0;z-index:20;
  background:var(--card);
  border-bottom:1px solid var(--line);
  height:56px;
  display:flex;align-items:center;gap:12px;
  padding:0 14px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:.2px}
.brand-badge{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,#111,#444);
  display:grid;place-items:center;color:#fff;
  font-size:12px;
}
.spacer{flex:1}
.iconbtn{
  width:38px;height:38px;border-radius:999px;
  border:1px solid var(--line);
  background:#f7f8fa;
  display:grid;place-items:center;
  cursor:pointer;
}
.iconbtn svg{width:18px;height:18px;stroke:#111}

.wrap{max-width:var(--max);margin:0 auto;}

.cover{
  position:relative;height:240px;
  background:linear-gradient(180deg,#cfcfcf,#bdbdbd);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cover img{width:100%;height:100%;object-fit:cover;display:block}

.profile-card{
  background:var(--card);
  margin:-54px 12px 12px;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.profile-head{display:flex;gap:16px;padding:14px;align-items:flex-end}
.avatar{
  width:108px;height:108px;border-radius:999px;
  background:#ddd;border:4px solid var(--card);
  overflow:hidden;flex:0 0 auto;
}
.avatar img{width:100%;height:100%;object-fit:cover;display:block}
.who{flex:1 1 auto;min-width:0}
.name{font-size:24px;font-weight:900;line-height:1.15;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stats{margin-top:6px;color:var(--muted);font-size:14px}
.meta{margin-top:10px;display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:14px}
.pill{display:inline-flex;gap:8px;align-items:center}
.pill svg{width:16px;height:16px}

.actions{padding:0 14px 14px;display:flex;gap:10px;flex-wrap:wrap}
.btn{
  border:1px solid var(--line);
  background:#f7f8fa;
  padding:10px 14px;border-radius:10px;
  font-weight:900;cursor:pointer;
}
.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}

.tabs{
  display:flex;gap:6px;padding:0 10px;
  border-top:1px solid var(--line);
  background:var(--card);
  overflow:auto;
}
.tab{
  padding:12px 12px;font-weight:900;
  color:var(--muted);
  border-bottom:3px solid transparent;
  cursor:pointer;white-space:nowrap;
}
.tab.active{color:var(--blue);border-bottom-color:var(--blue)}

.grid{display:grid;grid-template-columns:1fr;gap:12px;padding:12px}
@media (min-width:860px){
  .grid{grid-template-columns:360px 1fr}
  .cover{height:320px}
  .avatar{width:128px;height:128px}
}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 2px 10px rgba(0,0,0,.05)}
.card h3{margin:0;padding:12px 14px;border-bottom:1px solid var(--line);font-size:16px}
.section{padding:12px 14px}

.row{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:none}
.dot{
  width:34px;height:34px;border-radius:10px;
  background:#f0f2f5;border:1px solid var(--line);
  display:grid;place-items:center;flex:0 0 auto;
}
.dot svg{width:18px;height:18px}

.friends{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.friend{text-align:center;font-size:12px;color:var(--muted)}
.friend .pic{
  width:100%;aspect-ratio:1/1;border-radius:12px;
  background:#ddd;border:1px solid var(--line);overflow:hidden;
}
.friend img{width:100%;height:100%;object-fit:cover;display:block}

.highlights{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.hl{width:100%;aspect-ratio:1/1;border-radius:12px;background:#ddd;border:1px solid var(--line);overflow:hidden}
.hl img{width:100%;height:100%;object-fit:cover;display:block}