:root {
  --bg: #eef5fc;
  --card: #ffffff;
  --ink: #1d2b3a;
  --muted: #6b7c8f;
  --accent: #128afa;
  --accent-ink: #ffffff;
  --line: #d6e3f0;
  --tag: #e6f1fd;
  --shadow: 0 1px 2px rgba(29, 43, 58, 0.06), 0 4px 16px rgba(29, 43, 58, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1722;
    --card: #172231;
    --ink: #e6eef7;
    --muted: #8fa1b5;
    --line: #2a3a4f;
    --tag: #1d2c40;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.25);
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }

.wrap { max-width: 640px; margin: 0 auto; padding: 56px 16px 40px; }

.intro { text-align: center; margin-bottom: 32px; }
h1 { margin: 0; font-size: 2.4rem; letter-spacing: -0.03em; }
h1 span { color: var(--accent); }
.sub { margin: 6px 0 0; color: var(--muted); }

.projects { display: grid; gap: 14px; }

.card {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }

.body { flex: 1; min-width: 0; }
h2 { margin: 0 0 4px; font-size: 1.15rem; letter-spacing: -0.01em; }
h2 a { color: inherit; text-decoration: none; }
h2 a:hover { color: var(--accent); }
.body p { margin: 0 0 10px; color: var(--muted); font-size: 0.95rem; }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 12px; padding: 0; }
.tags li {
  background: var(--tag); color: var(--accent);
  font-size: 0.75rem; font-weight: 600;
  padding: 2px 10px; border-radius: 999px;
}

.links { display: flex; align-items: center; gap: 14px; }
.btn {
  background: var(--accent); color: var(--accent-ink);
  text-decoration: none; font-weight: 600; font-size: 0.9rem;
  padding: 6px 16px; border-radius: 999px;
}
.btn:hover { filter: brightness(1.08); }
.link { color: var(--muted); font-size: 0.9rem; text-decoration: none; }
.link:hover { color: var(--accent); text-decoration: underline; }

/* Project icons */
.icon {
  flex: none; width: 56px; height: 56px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--tag);
}
.icon-halo::before {
  content: ""; width: 32px; height: 14px; border-radius: 50%;
  border: 4px solid var(--accent);
  box-shadow: 0 0 10px rgba(18, 138, 250, 0.5);
}
.icon-hash, .icon-letter {
  color: var(--accent); font-weight: 800; font-size: 1.7rem;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
}

footer { margin-top: 40px; text-align: center; color: var(--muted); font-size: 0.9rem; }
footer a { color: var(--muted); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
footer a:hover { color: var(--accent); }
.version { font-size: 0.75rem; opacity: 0.6; }

@media (max-width: 420px) {
  .wrap { padding-top: 36px; }
  .card { padding: 14px; gap: 12px; }
  .icon { width: 44px; height: 44px; border-radius: 12px; }
  .icon-halo::before { width: 26px; height: 11px; border-width: 3px; }
}