/* ---------- Tokens ---------- */
:root {
  --bg: #FDFAF5;
  --bg-alt: #F6EFE3;
  --surface: #FFFFFF;
  --surface-2: #F3EADC;
  --text: #221814;
  --text-muted: #6B5D54;
  --text-faint: #9C8B7C;
  --border: #E5D9C7;
  --border-strong: #C9B89F;
  --accent: #B85432;
  --accent-hover: #9C3F22;
  --accent-soft: #F2DACA;
  --accent-fg: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(60, 32, 18, 0.04), 0 1px 1px rgba(60, 32, 18, 0.03);
  --shadow-md: 0 8px 24px -12px rgba(60, 32, 18, 0.18), 0 2px 6px rgba(60, 32, 18, 0.06);
  --shadow-lg: 0 24px 48px -20px rgba(60, 32, 18, 0.25);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --max-w: 1120px;

  --font-display: "Instrument Serif", "Source Serif Pro", Georgia, serif;
  --font-sans: "Geist", -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

[data-theme="dark"] {
  --bg: #17120E;
  --bg-alt: #1C160F;
  --surface: #1F1812;
  --surface-2: #281F18;
  --text: #F2E8D9;
  --text-muted: #B0A192;
  --text-faint: #7A6D60;
  --border: #2E251D;
  --border-strong: #463829;
  --accent: #E68C64;
  --accent-hover: #F2A47F;
  --accent-soft: #2E1F18;
  --accent-fg: #1A120D;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 24px -12px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 24px 48px -20px rgba(0,0,0,0.6);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color 0.18s ease; }
a:hover { color: var(--accent-hover); }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--accent); color: var(--accent-fg); }

h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.01em; }
p { margin: 0; text-wrap: pretty; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}
.section { padding: 112px 0; position: relative; }
.section-tight { padding: 80px 0; position: relative; }

/* Alternating section shading — every other section sits on bg-alt */
.section--alt,
.section-tight--alt {
  background: var(--bg-alt);
}
.section--alt + .section,
.section--alt + .section-tight,
.section-tight--alt + .section,
.section-tight--alt + .section-tight {
  /* keep next section clean */
}
/* Soft divider line between alternating sections */
.section--alt,
.section-tight--alt {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.section-label::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--border-strong);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-title em {
  color: var(--accent);
  font-style: italic;
}
.section-sub {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 560px;
  margin-bottom: 56px;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.nav.is-scrolled { border-bottom-color: var(--border); }
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--text); }
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  color: var(--text-muted);
  font-size: 14.5px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  position: relative;
  transition: color 0.18s ease, background-color 0.18s ease;
}
.nav-link:hover { color: var(--text); background: var(--surface-2); }
.nav-link.is-active { color: var(--text); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px;
  bottom: 2px;
  height: 1.5px;
  background: var(--accent);
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  margin-left: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--text);
  color: var(--bg);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--text);
  transition: transform 0.18s ease, opacity 0.18s ease;
}
.nav-cta:hover { color: var(--bg); opacity: 0.9; transform: translateY(-1px); }
.theme-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--text-muted);
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.4s ease;
  margin-left: 8px;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-burger {
  display: none;
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 8px;
  align-items: center; justify-content: center;
  color: var(--text);
}
.nav-burger span {
  display: block; width: 16px; height: 1.5px; background: currentColor; position: relative;
}
.nav-burger span::before, .nav-burger span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: currentColor;
}
.nav-burger span::before { top: -5px; }
.nav-burger span::after { top: 5px; }

.nav-mobile { display: none; }

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--surface);
  margin-bottom: 28px;
}
.eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #22a06b;
  box-shadow: 0 0 0 3px color-mix(in oklab, #22a06b 22%, transparent);
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
}
.hero-title .hero-greeting {
  font-size: clamp(40px, 7vw, var(--hero-greeting-max, 88px));
  display: block;
  line-height: 1;
}
.hero-title .hero-tagline {
  font-size: clamp(30px, 5.2vw, var(--hero-tagline-max, 60px));
  display: block;
  line-height: 1.08;
  margin-top: 0.18em;
  color: var(--text);
}
.hero-title em,
.hero-title .accent {
  color: var(--accent);
  font-style: italic;
}
.hero-sub {
  font-size: 19px;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 36px;
}
.hero-sub strong { color: var(--text); font-weight: 500; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--accent-fg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--text);
  color: var(--text);
}
.btn-arrow {
  transition: transform 0.2s ease;
}
.btn:hover .btn-arrow { transform: translateX(3px); }

/* Terminal */
.terminal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 13.5px;
  position: relative;
}
[data-theme="dark"] .terminal { background: #0F0B08; }
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
[data-theme="dark"] .terminal-bar { background: #1A140F; }
.terminal-dot { width: 11px; height: 11px; border-radius: 50%; }
.terminal-dot.r { background: #ED6A5E; }
.terminal-dot.y { background: #F4BF4F; }
.terminal-dot.g { background: #61C554; }
.terminal-title {
  margin-left: auto;
  color: var(--text-faint);
  font-size: 12px;
  font-family: var(--font-mono);
}
.terminal-body {
  padding: 22px 22px 26px;
  min-height: 220px;
  color: var(--text);
}
.terminal-line {
  display: flex;
  gap: 10px;
  margin-bottom: 4px;
  line-height: 1.7;
}
.terminal-line .prompt {
  color: var(--accent);
  user-select: none;
  flex-shrink: 0;
}
.terminal-line .out {
  color: var(--text-muted);
  padding-left: 22px;
}
.cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s steps(2, start) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-deco {
  position: absolute;
  inset: auto -10% -20% auto;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, color-mix(in oklab, var(--accent) 25%, transparent), transparent 65%);
  pointer-events: none;
  z-index: -1;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  align-items: center;
}
.avatar {
  width: 100%;
  aspect-ratio: 4/5;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.about-grid img {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  display: block;
}
.avatar::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 35%, color-mix(in oklab, var(--accent) 18%, transparent), transparent 50%),
    repeating-linear-gradient(45deg, transparent 0 12px, color-mix(in oklab, var(--border-strong) 35%, transparent) 12px 13px);
}
.avatar::after {
  content: "Add photo";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.about-body { font-size: 17px; color: var(--text); line-height: 1.7; }
.about-body p + p { margin-top: 18px; }
.about-body p { color: var(--text-muted); }
.about-body p strong { color: var(--text); font-weight: 500; }
.about-quick {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.qstat { display: flex; flex-direction: column; gap: 4px; }
.qstat-n {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--accent);
  line-height: 1;
}
.qstat-l {
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.skill-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.skill-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.skill-card h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 500;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.skill-tag {
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}

/* ---------- Timeline (Education, Work) ---------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 0;
}
.tl-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  position: relative;
}
.tl-item:first-child { border-top: none; padding-top: 8px; }
.tl-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 4px;
}
.tl-body h3 {
  font-size: 21px;
  font-weight: 500;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.tl-body .tl-org {
  color: var(--accent);
  font-size: 15px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tl-body .tl-org::after {
  content: "";
  width: 4px; height: 4px; border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}
.tl-body .tl-org .tl-loc { color: var(--text-muted); font-size: 14px; }
.tl-body ul {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tl-body li {
  position: relative;
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}
.tl-body li::before {
  content: "";
  position: absolute;
  left: 0; top: 11px;
  width: 8px; height: 1px;
  background: var(--border-strong);
}
.tl-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.tl-meta .skill-tag {
  font-size: 12px;
  padding: 3px 9px;
}

/* ---------- Experience (work) ---------- */
.exp {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.exp-rail {
  position: absolute;
  left: 21px;
  top: 24px;
  bottom: 24px;
  width: 1px;
  background:
    linear-gradient(to bottom,
      var(--border-strong) 0%,
      var(--border) 12%,
      var(--border) 88%,
      transparent 100%);
  pointer-events: none;
}
.exp-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 20px;
  align-items: start;
}
.exp-marker {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-top: 16px;
}
.exp-marker-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}
.exp-item:hover .exp-marker-dot {
  border-color: var(--accent);
  background: var(--accent);
  transform: scale(1.15);
}
.exp-item.is-current .exp-marker-dot {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 22%, transparent);
}
.exp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px 24px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  position: relative;
}
.exp-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.exp-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  margin-bottom: 14px;
}
.exp-role-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.exp-role {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
}
.exp-current-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
  background: color-mix(in oklab, #22a06b 14%, transparent);
  color: #22a06b;
}
.exp-current-pill::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px color-mix(in oklab, currentColor 25%, transparent);
}
[data-theme="dark"] .exp-current-pill {
  background: color-mix(in oklab, #61e3a4 18%, transparent);
  color: #61e3a4;
}
.exp-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.exp-org {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.exp-logo {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 15px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.exp-org-name {
  font-size: 14.5px;
  color: var(--text);
  font-weight: 500;
}
.exp-loc {
  font-size: 13px;
  color: var(--text-muted);
}
.exp-loc::before { content: "·"; margin: 0 6px 0 4px; color: var(--text-faint); }
.exp-body p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}
.exp-body p + p { margin-top: 10px; }
.exp-body strong { color: var(--text); font-weight: 500; }
.exp-impact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}
.exp-impact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px 10px 12px;
  background: var(--accent-soft);
  border-radius: 10px;
  flex: 1;
  min-width: 200px;
}
.exp-impact-num {
  font-family: var(--font-display);
  font-size: 26px;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.exp-impact-label {
  font-size: 13px;
  color: var(--text);
  line-height: 1.35;
}
.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--border);
}
.exp-tags .skill-tag { font-size: 12px; padding: 3px 9px; }

/* ---------- Education (diploma cards) ---------- */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.edu-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 32px 30px;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.edu-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.edu-card::after {
  content: attr(data-watermark);
  position: absolute;
  top: 6px;
  right: 22px;
  font-family: var(--font-display);
  font-size: 130px;
  line-height: 1;
  color: var(--accent);
  opacity: 0.08;
  pointer-events: none;
  letter-spacing: -0.04em;
  user-select: none;
}
.edu-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-muted);
  margin-bottom: 22px;
}
.edu-status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.edu-card.is-active .edu-status {
  background: color-mix(in oklab, var(--accent) 14%, transparent);
  color: var(--accent);
}
.edu-card.is-active .edu-status .dot {
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent);
  animation: edu-pulse 2s ease-in-out infinite;
}
@keyframes edu-pulse {
  0%, 100% { box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent); }
  50% { box-shadow: 0 0 0 6px color-mix(in oklab, var(--accent) 10%, transparent); }
}
.edu-degree {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.edu-degree em { color: var(--accent); font-style: italic; }
.edu-school {
  color: var(--text-muted);
  font-size: 14.5px;
  margin-bottom: 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.edu-school .school-name { color: var(--text); font-weight: 500; }
.edu-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-bottom: 22px;
}
.edu-stat { display: flex; flex-direction: column; gap: 4px; min-width: max-content; }
.edu-stat .v {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.edu-stat .v em { color: var(--accent); font-style: italic; }
.edu-stat .l {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.edu-honors-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 10px;
}
.edu-honors {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.edu-honor {
  font-size: 12.5px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.edu-honor.is-featured {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: transparent;
  font-weight: 500;
}

/* ---------- Project cards ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.project-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
  color: inherit;
}
.project-thumb {
  aspect-ratio: 16/10;
  background: var(--surface-2);
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
}
.project-thumb svg { width: 60%; height: auto; }
.project-card .project-body {
  padding: 22px 24px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.project-card h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.project-card .project-blurb {
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.55;
  margin-bottom: 16px;
  flex: 1;
}
.project-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.project-card .project-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}
.project-card .project-cta svg { transition: transform 0.25s ease; }
.project-card:hover .project-cta svg { transform: translate(3px, -3px); }

/* Project thumbnail variants */
.thumb-sts { background: linear-gradient(135deg, #F2DACA 0%, #E8B997 100%); }
.thumb-aug { background: linear-gradient(135deg, #2D2419 0%, #5A3A20 100%); color: #F2DACA; }
.thumb-his { background: linear-gradient(135deg, #E8DFD3 0%, #C9B89F 100%); }
[data-theme="dark"] .thumb-sts { background: linear-gradient(135deg, #4A2E1E 0%, #6B3D24 100%); }
[data-theme="dark"] .thumb-his { background: linear-gradient(135deg, #2A2118 0%, #463829 100%); }

/* ---------- Blog cards ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.blog-card {
  display: flex;
  flex-direction: column;
  padding: 28px 28px 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.blog-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  color: inherit;
}
.blog-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.blog-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: 0.6; }
.blog-card h3 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.blog-card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.55;
  margin-bottom: 20px;
  flex: 1;
}
.blog-card .read-more {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.blog-card .read-more svg { transition: transform 0.2s ease; }
.blog-card:hover .read-more svg { transform: translateX(3px); }

/* ---------- Contact ---------- */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.contact-side .channels {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 28px;
}
.channel {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.channel:hover { border-color: var(--accent); color: var(--text); transform: translateX(2px); }
.channel-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid; place-items: center;
  flex-shrink: 0;
}
.channel-icon svg { width: 18px; height: 18px; }
.channel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.channel-val { font-size: 15px; }

.form-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row.full { grid-column: 1 / -1; }
.form-row label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.form-row input,
.form-row textarea {
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-row textarea { resize: vertical; min-height: 120px; }
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 22%, transparent);
}
.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 22px;
  gap: 12px;
  flex-wrap: wrap;
}
.form-hint {
  font-size: 12.5px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  transition: color 0.2s ease;
}
.form-hint[data-tone="sending"] { color: var(--text-muted); }
.form-hint[data-tone="success"] { color: var(--accent); }
.form-hint[data-tone="error"]   { color: #B0464A; }
[data-theme="dark"] .form-hint[data-tone="error"] { color: #E89499; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 36px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .brand { margin-bottom: 14px; }
.footer-brand p {
  color: var(--text-muted);
  font-size: 14.5px;
  max-width: 340px;
}
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
  font-weight: 500;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  color: var(--text);
  font-size: 14.5px;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}
.footer-bottom .pulse {
  display: inline-flex; align-items: center; gap: 8px;
}
.footer-bottom .pulse::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: #22a06b;
  box-shadow: 0 0 0 3px color-mix(in oklab, #22a06b 20%, transparent);
}

/* ---------- Project detail page ---------- */
.detail-hero {
  padding: 64px 0 48px;
}
.crumbs {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.crumbs a { color: var(--text-muted); }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { color: var(--text-faint); }
.detail-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.detail-lede {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 680px;
  margin-bottom: 32px;
  line-height: 1.5;
}
.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.detail-meta .meta-item { display: flex; flex-direction: column; gap: 4px; }
.detail-meta .meta-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.detail-meta .meta-val { font-size: 15px; color: var(--text); }

.detail-cover {
  margin-top: 48px;
  aspect-ratio: 21/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid; place-items: center;
}

.prose {
  max-width: 720px;
  margin: 0 auto;
  font-size: 17.5px;
  line-height: 1.75;
  color: var(--text);
}
.prose p { color: var(--text-muted); margin-bottom: 22px; }
.prose h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 34px;
  margin: 56px 0 18px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.prose h3 {
  font-size: 20px;
  font-weight: 500;
  margin: 36px 0 12px;
  color: var(--text);
}
.prose ul, .prose ol { padding-left: 22px; margin-bottom: 22px; color: var(--text-muted); }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--text); font-weight: 500; }
.prose a { border-bottom: 1px solid color-mix(in oklab, var(--accent) 40%, transparent); }
.prose a:hover { border-bottom-color: var(--accent); }
.prose blockquote {
  margin: 28px 0;
  padding: 4px 0 4px 22px;
  border-left: 2px solid var(--accent);
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.5;
  color: var(--text);
  font-style: italic;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text);
}
.prose pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
  margin-bottom: 22px;
}
.prose pre code { background: none; padding: 0; }
.prose img { margin: 28px 0; border-radius: var(--radius-md); }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 48px 0; }

.detail-cta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-top: 56px;
  gap: 24px;
  flex-wrap: wrap;
}
.detail-cta-text h4 { font-size: 18px; font-weight: 500; margin-bottom: 4px; }
.detail-cta-text p { color: var(--text-muted); font-size: 14.5px; }

/* Author block on blog */
.author-block {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  margin-top: 56px;
}
.author-block .av {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-size: 19px;
}
.author-block .name { font-size: 15px; color: var(--text); }
.author-block .role { font-size: 13px; color: var(--text-muted); }

/* Related posts */
.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .cursor { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-grid { grid-template-columns: 200px 1fr; gap: 40px; }
  .contact-wrap { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .tl-item { grid-template-columns: 140px 1fr; gap: 20px; }
  .edu-grid { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
  .nav-mobile {
    display: none;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 28px 24px;
    flex-direction: column;
    gap: 4px;
    z-index: 40;
  }
  .nav-mobile.open { display: flex; }
  .nav-mobile a {
    padding: 12px 0;
    color: var(--text);
    border-bottom: 1px solid var(--border);
    font-size: 15px;
  }
  .nav-mobile a:last-child { border-bottom: none; }
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  .hero { padding: 56px 0 72px; }
  .hero-title { font-size: clamp(40px, 11vw, 56px); }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .avatar { max-width: 240px; }
  .about-quick { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .qstat-n { font-size: 28px; }
  .tl-item { grid-template-columns: 1fr; gap: 4px; padding: 24px 0; }
  .exp-item { grid-template-columns: 32px 1fr; gap: 12px; }
  .exp-marker { width: 32px; height: 32px; margin-top: 14px; }
  .exp-rail { left: 15.5px; }
  .exp-card { padding: 20px 20px 22px; }
  .exp-head { flex-direction: column; align-items: flex-start; gap: 6px; }
  .exp-date { font-size: 11.5px; }
  .exp-impact-item { min-width: 100%; }
  .edu-card { padding: 24px 22px 24px; }
  .edu-card::after { font-size: 100px; right: 14px; }
  .edu-degree { font-size: 26px; }
  .edu-stats { gap: 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .section { padding: 64px 0; }
  .detail-cover { aspect-ratio: 4/3; }
  .related-grid { grid-template-columns: 1fr; }
  .prose { font-size: 16.5px; }
  .prose h2 { font-size: 26px; margin: 40px 0 14px; }
}