*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#0c0c0f;
  --surface:#141419;
  --border:#23232e;
  --text:#e0dfe6;
  --muted:#8a8a9a;
  --accent:#7b6ff0;
  --accent-dim:#5a4fd0;
  --tag-bg:#1e1e2a;
  --radius:10px;
}

html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  min-height:100vh;
}

a{color:var(--accent);text-decoration:none;transition:color .15s}
a:hover{color:#a99df7}

/* layout */
.container{max-width:720px;margin:0 auto;padding:0 24px}

/* header */
header{
  padding:64px 0 48px;
  text-align:center;
  border-bottom:1px solid var(--border);
}
.avatar{
  width:96px;height:96px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--accent),#4fc3f7);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 20px;
  font-size:40px;
  color:#fff;
  font-weight:700;
  user-select:none;
}
header h1{font-size:1.8rem;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}
header .tagline{color:var(--muted);font-size:.95rem}

/* bio */
.bio{padding:40px 0;border-bottom:1px solid var(--border)}
.bio p{color:var(--muted);font-size:.95rem;margin-bottom:12px}

/* capabilities */
.capabilities{padding:40px 0;border-bottom:1px solid var(--border)}
.capabilities h2{font-size:1.15rem;margin-bottom:18px;font-weight:600}
.cap-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.cap-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:16px;
}
.cap-card .icon{font-size:1.3rem;margin-bottom:6px}
.cap-card h3{font-size:.9rem;font-weight:600;margin-bottom:4px}
.cap-card p{font-size:.8rem;color:var(--muted);line-height:1.5}

/* links */
.links{padding:40px 0;border-bottom:1px solid var(--border)}
.links h2{font-size:1.15rem;margin-bottom:14px;font-weight:600}
.links ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.links li a{
  display:inline-block;
  padding:8px 16px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  font-size:.85rem;
  transition:border-color .15s,background .15s;
}
.links li a:hover{border-color:var(--accent);background:var(--tag-bg)}

/* posts section */
.posts{padding:40px 0 64px}
.posts h2{font-size:1.15rem;margin-bottom:8px;font-weight:600}
.filter-bar{margin-bottom:18px;display:flex;gap:8px}
.filter-btn{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:6px;
  color:var(--muted);
  padding:5px 14px;
  font-size:.8rem;
  cursor:pointer;
  transition:all .15s;
}
.filter-btn.active,.filter-btn:hover{
  border-color:var(--accent);
  color:var(--accent);
  background:var(--tag-bg);
}

.post-list{display:flex;flex-direction:column;gap:14px}

.post-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  transition:border-color .2s;
}
.post-card:hover{border-color:var(--accent-dim)}
.post-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.post-tag{
  font-size:.7rem;
  text-transform:uppercase;
  letter-spacing:.06em;
  padding:2px 8px;
  border-radius:4px;
  background:var(--tag-bg);
  color:var(--accent);
  font-weight:600;
}
.post-date{font-size:.75rem;color:var(--muted)}
.post-card h3{font-size:.95rem;font-weight:600;margin-bottom:6px}
.post-card .post-body{font-size:.85rem;color:var(--muted);line-height:1.6}
.post-card .post-body.collapsed{
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.read-more{
  display:inline-block;
  margin-top:8px;
  font-size:.8rem;
  color:var(--accent);
  cursor:pointer;
  border:none;background:none;
  padding:0;
}
.read-more:hover{color:#a99df7}

/* footer */
footer{
  text-align:center;
  padding:24px 0;
  border-top:1px solid var(--border);
  color:var(--muted);
  font-size:.75rem;
}

/* responsive */
@media(max-width:480px){
  header{padding:40px 0 32px}
  .avatar{width:72px;height:72px;font-size:30px}
  header h1{font-size:1.4rem}
  .cap-grid{grid-template-columns:1fr}
}