:root {
  --fg: #1d1d1f;
  --muted: #6e6e73;
  --bg: #fbfbfd;
  --bg-soft: #f5f5f7;
  --rule: #e5e5e7;
  --link: #1d1d1f;
  --accent: #1d1d1f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f5f5f7;
    --muted: #98989d;
    --bg: #000000;
    --bg-soft: #1c1c1e;
    --rule: #2c2c2e;
    --link: #f5f5f7;
    --accent: #f5f5f7;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  padding: 4.5rem 1.5rem 6rem;
  background: var(--bg);
  color: var(--fg);
  font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
main {
  max-width: 640px;
  margin: 0 auto;
}
h1, h2, h3 { font-weight: 500; }
h1 {
  font-size: 2rem;
  letter-spacing: -0.01em;
  margin: 0 0 0.2rem;
}
.tagline {
  color: var(--muted);
  margin: 0 0 2.2rem;
  font-size: 1.05rem;
  font-weight: 300;
}

/* nav + social icons */
nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  margin-bottom: 3rem;
  font-size: 0.9rem;
}
nav a {
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
nav a:hover { color: var(--fg); }
nav .textlink { font-weight: 500; }
nav svg { width: 18px; height: 18px; fill: currentColor; display: block; }
nav .spacer { flex: 1 0 auto; width: 0; }

h2 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 600;
  margin: 3rem 0 1.1rem;
  border-top: 1px solid var(--rule);
  padding-top: 2.4rem;
}
section:first-of-type h2 { border-top: none; padding-top: 0; }
p { margin: 0 0 1.2rem; }
a { color: var(--link); text-decoration-color: var(--rule); text-underline-offset: 3px; transition: text-decoration-color .15s; }
a:hover { text-decoration-color: var(--fg); }

.note {
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 1.1rem 1.3rem;
  font-size: 0.95rem;
  color: var(--muted);
  margin: 0 0 1.2rem;
}
.note strong { color: var(--fg); font-weight: 500; }

.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1.2rem; }
.tags span {
  font-size: 0.78rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--muted);
}

.proj-group { margin-bottom: 1.8rem; }
.proj-group h3 {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 0.7rem;
}
ul.proj { list-style: none; margin: 0; padding: 0; }
ul.proj li {
  margin-bottom: 1.1rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--rule);
}
ul.proj li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
ul.proj .name { font-weight: 500; }
ul.proj .desc { color: var(--muted); font-size: 0.94rem; display: block; margin-top: 0.25rem; }

footer {
  margin-top: 3.8rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--muted);
}

/* blog */
ul.posts { list-style: none; margin: 0; padding: 0; }
ul.posts li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
}
ul.posts li:last-child { border-bottom: none; }
ul.posts .date {
  color: var(--muted);
  font-size: 0.82rem;
  white-space: nowrap;
  padding-top: 0.2rem;
}
.post-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin: -1rem 0 2rem;
}
article h1 { margin-bottom: 0.4rem; }
article blockquote {
  margin: 0 0 1.2rem;
  padding-left: 1rem;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}
article pre {
  background: var(--bg-soft);
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  border-radius: 8px;
}
article code {
  font-family: "SF Mono", Consolas, Menlo, monospace;
  font-size: 0.88em;
  background: var(--bg-soft);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}
article pre code { background: none; padding: 0; }

/* mobile */
@media (max-width: 480px) {
  body { padding: 2.75rem 1.1rem 3.5rem; font-size: 16px; }
  h1 { font-size: 1.65rem; }
  .tagline { font-size: 0.98rem; margin-bottom: 1.8rem; }
  nav { flex-wrap: wrap; row-gap: 0.7rem; margin-bottom: 2.2rem; }
  h2 { margin-top: 2.2rem; padding-top: 1.8rem; }
  .note { padding: 1rem; }
  ul.posts li { flex-direction: column; gap: 0.15rem; }
  ul.posts .date { padding-top: 0; }
}