:root {
  --bg: #f3f4f7;
  --grid-line: rgba(20, 22, 30, 0.05);
  --card-bg: #ffffff;
  --card-bg-soft: #fafbfc;
  --ink: #12131a;
  --ink-soft: #5b5f6f;
  --ink-faint: #8b8fa0;
  --ink-muted-heading: #9aa0b4;
  --line: rgba(18, 19, 26, 0.12);
  --line-strong: rgba(18, 19, 26, 0.85);

  --accent: #4c5fd7;
  --accent-bright: #5b6ef0;
  --accent-soft: rgba(76, 95, 215, 0.08);
  --accent-glow: rgba(76, 95, 215, 0.22);

  --leaf: #2f8f6f;
  --leaf-soft: rgba(47, 143, 111, 0.1);

  --pill-dark: #12131a;
  --pill-dark-ink: #ffffff;

  --radius-card: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-pill: 999px;

  --sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: center top;
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  animation: page-fade-in 0.4s ease both;
  overflow-x: hidden;
}

@keyframes page-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--leaf), var(--accent));
  z-index: 200;
  transition: width 0.1s linear;
}

/* back to top */
.back-to-top {
  position: fixed;
  right: 1.75rem;
  bottom: 1.75rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid var(--line-strong);
  background: var(--card-bg);
  color: var(--ink);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 30px -12px rgba(18, 19, 26, 0.25);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.2s ease, color 0.2s ease;
  z-index: 90;
}

.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--pill-dark); color: var(--pill-dark-ink); }

a[target="_blank"]::after {
  content: '↗';
  display: inline-block;
  margin-left: 0.2em;
  font-size: 0.85em;
  transform: translateY(-0.05em);
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---- Top Navigation: light floating capsule ---- */
.topbar {
  position: fixed;
  top: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: max-content;
  max-width: 94vw;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1.5px solid var(--line-strong);
  box-shadow: 0 14px 36px -16px rgba(18, 19, 26, 0.18);
}

.topbar-inner {
  margin: 0 auto;
  padding: 0.5rem 0.5rem 0.5rem 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  border-bottom: none;
  flex-shrink: 0;
}

.brand-photo {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 2px #fff, 0 0 0 3.5px var(--line-strong);
}

.brand-name {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.brand-name .dot { color: var(--accent); }

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.1rem;
  justify-content: flex-end;
  align-items: center;
}

.nav-link {
  position: relative;
  display: block;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-pill);
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-bottom: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-link:hover { background: var(--accent-soft); color: var(--accent); }

.nav-link.active { color: var(--ink); background: var(--bg); }

.nav-link.active::after { display: none; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: 0.35rem;
  padding: 0.55rem 1.05rem;
  border-radius: var(--radius-pill);
  background: var(--pill-dark);
  color: var(--pill-dark-ink) !important;
  font-size: 0.8rem;
  font-weight: 700;
  border-bottom: none !important;
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.nav-cta svg { width: 15px; height: 15px; flex-shrink: 0; }

.nav-cta:hover {
  transform: translateY(-1px);
  background: var(--accent);
  box-shadow: 0 10px 24px -10px rgba(76, 95, 215, 0.55);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1.5px solid var(--line-strong);
  background: var(--card-bg);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); }

/* ---- Page content ---- */
.page-content { padding: 0 0 6rem; counter-reset: section; }

/* pill eyebrow */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink-soft);
  background: var(--card-bg);
  border: 1.5px solid var(--line);
  padding: 0.4rem 0.9rem 0.4rem 0.7rem;
  border-radius: var(--radius-pill);
  margin: 0 0 1.5rem;
}

.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--leaf);
  flex-shrink: 0;
}

.page-header .eyebrow, .hero .eyebrow { margin-left: auto; margin-right: auto; }

/* ---- Hero / Page-header: bordered card frame on grid bg ---- */
.hero-stage { position: relative; padding: 6.5rem 0 0; }

.ghost-name { display: none; }

.hero, .page-header {
  position: relative;
  width: min(1040px, 92vw);
  margin: 0 auto;
  border-radius: var(--radius-card);
  background: var(--card-bg);
  border: 1.5px solid var(--line-strong);
  box-shadow: 0 40px 80px -40px rgba(18, 19, 26, 0.18);
  overflow: hidden;
}

.hero .container, .page-header .container {
  max-width: 100%;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
}

.hero { padding: 3.5rem 0 4rem; margin-bottom: 3.5rem; text-align: center; }

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-name-echo { display: none; }

.hero-text { display: flex; flex-direction: column; align-items: center; width: 100%; }

.hero-photo-stack {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 1.5rem;
}

.hero-photo-wrap {
  position: relative;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  z-index: 2;
}

.hero-photo-wrap::before { display: none; }

.hero-photo {
  display: block;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 6px var(--card-bg), 0 0 0 7.5px var(--line), 0 30px 50px -20px rgba(18, 19, 26, 0.3);
}

/* fact pills, listed in a static row below the photo */
.hero-facts {
  display: flex;
  flex-flow: row nowrap;
  justify-content: center;
  gap: 0.4rem;
  margin: 0 auto 1.5rem;
  max-width: 100%;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.hero-facts::-webkit-scrollbar { display: none; }

.hero-fact {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 0.35rem;
  background: var(--pill-dark);
  color: #fff;
  font-size: 0.66rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem 0.3rem 0.3rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 24px -14px rgba(18, 19, 26, 0.45);
  white-space: nowrap;
}

.hero-fact-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hero-fact-icon svg { display: block; width: 10px; height: 10px; color: #fff; }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.hero-tags span {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--card-bg-soft);
  border: 1.5px solid var(--line);
  color: var(--ink-soft);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
}

.hero h1 {
  font-family: var(--sans);
  font-size: clamp(2.6rem, 6vw, 3.75rem);
  font-weight: 800;
  margin: 0 0 1.1rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.03;
}

.hero h1 .muted-word { color: var(--ink-muted-heading); font-weight: 700; }

.hero-title {
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin: 0 auto;
  max-width: 480px;
  font-family: var(--sans);
  font-weight: 500;
}

.page-header { padding: 3rem 0 3rem; margin-bottom: 3rem; text-align: center; }

.page-header h1 {
  font-family: var(--sans);
  font-size: clamp(2.1rem, 4.4vw, 2.9rem);
  font-weight: 800;
  margin: 0 0 0.85rem;
  color: var(--ink);
  letter-spacing: -0.025em;
}

.page-header h1 .muted-word { color: var(--ink-muted-heading); }

.page-header .lede {
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto;
  font-size: 1.02rem;
  font-family: var(--sans);
  font-weight: 500;
}

/* ---- Sections ---- */
.section { padding: 0 0 3.75rem; counter-increment: section; }

.section > h2 {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--sans);
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 0 1.5rem;
  color: var(--ink);
  letter-spacing: -0.015em;
}

.section > h2::before {
  content: counter(section, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-faint);
  background: var(--card-bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.6rem;
}

.sub {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  margin: 2.25rem 0 0.85rem;
  letter-spacing: -0.01em;
}

.section > .sub:first-of-type,
.page-content > .sub:first-of-type { margin-top: 0; }

.section p, .page-content p { color: var(--ink-soft); margin: 0 0 1.1rem; }
.section p:last-child { margin-bottom: 0; }

.about-photo { float: right; margin: 0.25rem 0 1rem 1.75rem; width: 200px; }

.about-photo img {
  display: block;
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--line-strong);
  box-shadow: 0 20px 40px -20px rgba(18, 19, 26, 0.3);
}

.hl { color: var(--accent); font-weight: 700; }

/* pill CTA button */
.cta-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius-pill);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  background: var(--pill-dark);
  border-bottom: none;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-pill:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -14px rgba(76, 95, 215, 0.5);
}

/* row-table list */
.row-list { border-top: 1.5px solid var(--line); margin: 0; }

.row-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 0.5rem;
  border-bottom: 1.5px solid var(--line);
  transition: background 0.2s ease, padding-left 0.2s ease;
}

.row-list-item:hover { background: var(--card-bg-soft); padding-left: 0.85rem; }

.row-name { font-family: var(--sans); font-weight: 600; font-size: 1rem; color: var(--ink); }

.row-index {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
  flex-shrink: 0;
}

/* drop cap */
.lede-drop::first-letter {
  font-family: var(--sans);
  font-size: 3.4rem;
  font-weight: 800;
  float: left;
  line-height: 0.8;
  padding: 0.1rem 0.5rem 0 0;
  color: var(--ink);
}

.muted { color: var(--ink-faint); font-size: 0.92rem; }

.label-inline {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.72rem;
  color: var(--ink-soft);
  margin: 1.4rem 0 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.divider { border: none; border-top: 1.5px solid var(--line); margin: 0 0 3.75rem; }

/* interest grid */
.interest-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.25rem; }

.interest-card {
  position: relative;
  background: var(--card-bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.4rem 1.3rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.interest-card::before {
  content: attr(data-index);
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--ink-faint);
  background: var(--bg);
  border-radius: var(--radius-pill);
  padding: 0.2rem 0.55rem;
  margin-bottom: 0.7rem;
}

.interest-card:hover {
  border-color: var(--line-strong);
  box-shadow: 0 20px 40px -20px rgba(18, 19, 26, 0.25);
  transform: translateY(-3px);
}

.interest-card h4 { margin: 0 0 0.5rem; font-size: 0.98rem; font-family: var(--sans); font-weight: 700; color: var(--ink); }
.interest-card p { margin: 0; font-size: 0.88rem; color: var(--ink-soft); }

/* quick links — bento */
.quicklinks {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  grid-auto-rows: minmax(120px, auto);
  gap: 1rem;
  margin-top: 1.25rem;
}

.quicklinks .quicklink-card:nth-child(1) { grid-column: 1; grid-row: 1 / 3; }
.quicklinks .quicklink-card:nth-child(2) { grid-column: 2; grid-row: 1; }
.quicklinks .quicklink-card:nth-child(3) { grid-column: 2; grid-row: 2; }
.quicklinks .quicklink-card:nth-child(4) { grid-column: 1 / 3; grid-row: 3; }

.quicklink-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  background: var(--card-bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.quicklinks .quicklink-card:nth-child(1) { flex-direction: column; justify-content: space-between; }
.quicklinks .quicklink-card:nth-child(1) .quicklink-arrow { align-self: flex-end; }

.quicklink-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: 0 22px 44px -20px rgba(18, 19, 26, 0.25);
}

.quicklink-card::before {
  content: attr(data-index);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--ink-faint);
  background: var(--bg);
  border-radius: var(--radius-pill);
  padding: 0.2rem 0.55rem;
  flex-shrink: 0;
}

.quicklink-body { flex: 1; }
.quicklink-card h3 { font-family: var(--sans); font-weight: 700; font-size: 1.05rem; margin: 0 0 0.4rem; color: var(--ink); }
.quicklink-card p { margin: 0; font-size: 0.86rem; color: var(--ink-soft); }

.quicklink-arrow {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--ink);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s ease, background 0.2s ease, color 0.2s ease;
}

.quicklink-card:hover .quicklink-arrow { transform: translate(2px, -2px); background: var(--pill-dark); color: #fff; }

/* timeline */
.timeline { list-style: none; margin: 0; padding: 0; border-left: 1.5px solid var(--line); }

.timeline li {
  position: relative;
  padding: 0.15rem 0 1.4rem 1.7rem;
  margin-left: -1.5px;
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
}

.timeline li:hover { background: var(--card-bg-soft); }

.timeline li::before {
  content: '';
  position: absolute;
  left: -5.5px;
  top: 0.55rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.timeline li:last-child { padding-bottom: 0.15rem; }

.tl-date {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  font-weight: 600;
  margin-bottom: 0.3rem;
  letter-spacing: 0.02em;
}

.tl-body { color: var(--ink-soft); }
.tl-body strong { color: var(--ink); }

/* lists */
.pub-list, .plain-list { padding-left: 0; list-style: none; color: var(--ink-soft); margin: 0; counter-reset: pub; }

.pub-list li {
  counter-increment: pub;
  position: relative;
  padding: 0.7rem 0.5rem 0.7rem 2.4rem;
  margin-bottom: 0.15rem;
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
}

.pub-list li:hover { background: var(--card-bg-soft); }

.pub-list li::before {
  content: counter(pub, decimal-leading-zero);
  position: absolute;
  left: 0.4rem;
  top: 0.72rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
}

.plain-list { padding-left: 1.3rem; }
.plain-list li { list-style: disc; margin-bottom: 1rem; padding-left: 0.35rem; }
.plain-list li strong { color: var(--ink); }
.plain-list.compact li { margin-bottom: 0.6rem; }

.pub-list .note {
  display: block;
  font-size: 0.82rem;
  font-style: italic;
  color: var(--ink-faint);
  margin-top: 0.25rem;
}

/* project cards */
.proj-card {
  position: relative;
  background: var(--card-bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.6rem;
  margin-bottom: 1.15rem;
  transition: box-shadow 0.25s ease, transform 0.2s ease, border-color 0.2s ease;
}
.proj-card:hover { border-color: var(--line-strong); box-shadow: 0 20px 40px -20px rgba(18, 19, 26, 0.25); transform: translateY(-2px); }
.proj-card:last-child { margin-bottom: 0; }

.proj-tag {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--leaf);
  background: var(--leaf-soft);
  padding: 0.28rem 0.65rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.75rem;
}

.proj-card h3 { font-family: var(--sans); font-weight: 700; font-size: 1.1rem; margin: 0 0 0.55rem; color: var(--ink); }
.proj-card p { margin: 0; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2.25rem; margin-top: 1.1rem; }

/* footer */
.site-footer {
  padding: 3.5rem 0 2.25rem;
  text-align: center;
  color: var(--ink-faint);
  font-size: 0.82rem;
  font-family: var(--mono);
  border-top: 1.5px solid var(--line);
  margin-top: 1rem;
}
.footer-note { margin-top: 0.35rem; }

/* scroll reveal */
.reveal-pending { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal-visible { opacity: 1; transform: translateY(0); }

::selection { background: var(--accent-glow); color: var(--ink); }

/* cursor glow */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 250;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease, width 0.25s ease, height 0.25s ease;
}
.cursor-glow.active { opacity: 1; }
.cursor-glow.hovering { width: 52px; height: 52px; }

@media (pointer: coarse) { .cursor-glow { display: none; } }

/* sticky in-page contents sidebar */
.page-toc {
  display: none;
  position: fixed;
  top: 8.5rem;
  left: calc((100vw - 1040px) / 2 - 216px);
  width: 180px;
  max-height: calc(100vh - 11rem);
  overflow-y: auto;
}

.page-toc-label {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin: 0 0 0.85rem;
  padding-left: 0.75rem;
}

.page-toc a {
  display: block;
  padding: 0.4rem 0 0.4rem 0.75rem;
  border-left: 1.5px solid var(--line);
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-faint);
  border-bottom: none;
  line-height: 1.4;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-toc a:hover { color: var(--ink); border-left-color: var(--line-strong); }
.page-toc a.active { color: var(--accent); border-left-color: var(--accent); }

@media (min-width: 1520px) { .page-toc { display: block; } }

/* responsive */
@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    top: 4.4rem;
    left: 50%;
    transform: translateX(-50%);
    width: min(90vw, 320px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(14px);
    border: 1.5px solid var(--line-strong);
    border-radius: 20px;
    flex-direction: column;
    padding: 0.6rem;
    display: none;
    box-shadow: 0 16px 32px rgba(18, 19, 26, 0.18);
  }
  .main-nav.open { display: flex; }
  .nav-link { padding: 0.8rem 0.6rem; }
  .nav-cta { margin: 0.35rem 0 0; justify-content: center; }
  .nav-toggle { display: flex; }
  .topbar-inner { position: relative; }
  .interest-grid, .two-col, .quicklinks { grid-template-columns: 1fr; }
  .quicklinks .quicklink-card { grid-column: auto !important; grid-row: auto !important; }
  .container { padding: 0 1.25rem; }
  .hero-tags { justify-content: center; }
  .lede-drop::first-letter { font-size: 2.6rem; }
  .about-photo { float: none; width: 100%; max-width: 260px; margin: 0 auto 1.5rem; }
  .hero, .page-header { width: 94vw; border-radius: 22px; }
  .hero-stage { padding-top: 5.5rem; }
  .row-list-item { flex-direction: column; align-items: flex-start; gap: 0.25rem; }
  .page-toc { display: none !important; }
  .cursor-glow { display: none; }
}