:root {
  --bg: #fdfdfb;
  --bg-alt: #f4f4f1;
  --card: #ffffff;
  --border: #d8d8d2;
  --border-strong: #111111;
  --text: #141414;
  --text-dim: #4c4c4c;
  --text-faint: #8a8a83;

  --accent: #0a5c36;

  --radius: 3px;
  --max: 920px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.accent { color: var(--accent); }

/* Nav */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border-strong);
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-weight: 700;
  font-size: 1.05rem;
}
.nav-brand .dot { color: var(--accent); }
.nav-links {
  list-style: none;
  display: flex;
  gap: 26px;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dim);
}
.nav-links a::before { content: "/"; color: var(--text-faint); margin-right: 2px; }
.nav-links a:hover { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
}

/* Hero */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px 24px 56px;
}
.eyebrow {
  color: var(--text-faint);
  font-size: 0.85rem;
  font-weight: 500;
  margin: 0 0 20px;
}

.term {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--card);
  margin-bottom: 28px;
  overflow: hidden;
}
.term-bar {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.term-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--bg);
}
.term-body { padding: 24px; }
.term-line {
  margin: 0 0 10px;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.prompt { color: var(--accent); font-weight: 700; margin-right: 6px; }

.hero-title {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 18px;
}
.cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-sub {
  max-width: 640px;
  color: var(--text-dim);
  font-size: 0.95rem;
  margin: 0;
}
.hero-sub strong { color: var(--text); }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  font-weight: 600;
  font-size: 0.88rem;
}
.btn-primary {
  background: var(--text);
  color: var(--bg);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-ghost {
  background: var(--card);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-links {
  display: flex;
  gap: 20px;
}
.hero-links a {
  font-size: 0.87rem;
  font-weight: 600;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
.hero-links a:hover { color: var(--accent); border-color: var(--accent); }

/* Sections */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px 24px;
  border-top: 1px solid var(--border);
}
.section-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 26px;
}
.section-title .idx {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-faint);
}
.section-lede {
  color: var(--text-dim);
  margin: -14px 0 26px;
  max-width: 640px;
  font-size: 0.92rem;
}
.section-body p {
  color: var(--text-dim);
  max-width: 700px;
  margin: 0 0 16px;
  font-size: 0.94rem;
}
.sub-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 44px 0 18px;
  color: var(--text);
}
.sub-title::before { content: "// "; color: var(--text-faint); }

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-left: 1px solid var(--border-strong);
  padding-left: 26px;
}
.tl-item { position: relative; padding-bottom: 26px; }
.tl-marker {
  position: absolute;
  left: -31px;
  top: 5px;
  width: 8px;
  height: 8px;
  background: var(--bg);
  border: 2px solid var(--border-strong);
}

.tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}
.tl-head h3 { margin: 0; font-size: 1rem; font-weight: 700; }
.tl-date { color: var(--text-faint); font-size: 0.82rem; font-weight: 600; white-space: nowrap; }
.tl-org { color: var(--text-dim); font-size: 0.87rem; margin: 4px 0 10px; }
.tl-content ul { margin: 0; padding-left: 18px; color: var(--text-dim); }
.tl-content li { margin-bottom: 6px; font-size: 0.92rem; }

/* Cards */
.cards {
  display: grid;
  gap: 16px;
}
.cards-1 { grid-template-columns: 1fr; }
.cards-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.cards-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 20px;
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}
.card-top h4 { margin: 0; font-size: 0.98rem; font-weight: 700; }
.card-org { color: var(--text-faint); font-size: 0.83rem; margin: 0 0 12px; }
.card-desc { color: var(--text-dim); font-size: 0.9rem; margin: 0 0 14px; }
.card ul { margin: 0; padding-left: 18px; color: var(--text-dim); font-size: 0.88rem; }
.card li { margin-bottom: 6px; }

.pill {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  white-space: nowrap;
  color: var(--text-dim);
}

.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.tag {
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: var(--radius);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.card-links { display: flex; gap: 16px; }
.card-links a {
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}
.card-links a:hover { opacity: 0.7; }

/* Skills */
.skill-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 26px;
}
.skill-label {
  margin: 0 0 12px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-faint);
}
.skill-label::before { content: "# "; }

/* Contact */
.section-contact { padding-bottom: 90px; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 26px;
}
.contact-card {
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.contact-card:hover { border-color: var(--accent); }
.contact-label { font-size: 0.72rem; font-weight: 700; color: var(--text-faint); }
.contact-label::before { content: "> "; }
.contact-value { font-size: 0.95rem; font-weight: 700; }

/* Footer */
.footer {
  text-align: center;
  padding: 28px 24px 40px;
  color: var(--text-faint);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 680px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border-strong);
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
}