:root {
  --bg-1: #f5f8f2;
  --bg-2: #eef4ea;
  --ink-strong: #1b2e21;
  --ink-title: #1c3926;
  --ink-body: #2d4a34;
  --ink-muted: #4c6658;
  --brand-700: #1e3a28;
  --brand-600: #2e6a3d;
  --brand-500: #3f7a4a;
  --brand-400: #6cb86c;
  --surface: #ffffff;
  --surface-soft: #f1f7ee;
  --surface-soft-2: #f8fcf6;
  --border: #d1e0cb;
  --border-soft: #cedfc9;
  --footer-bg: #14281d;
  --footer-ink: #eaf3e5;
  --footer-subtle: #afc3b6;
  --radius-s: 12px;
  --radius-m: 16px;
  --radius-l: 20px;
  --radius-xl: 24px;
  --radius-2xl: 28px;
  --shadow-soft: 0 12px 28px rgba(20, 40, 29, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink-body);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-2));
  font-family: "DM Sans", sans-serif;
  line-height: 1.55;
}

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

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 250, 244, 0.86);
  border-bottom: 1px solid #d8e4d2;
  backdrop-filter: blur(8px);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  position: relative;
}

.brand {
  max-width: min(70%, 440px);
}

.brand-name {
  margin: 0;
  color: #193420;
  font-family: "Fraunces", serif;
  font-size: clamp(1.4rem, 2.4vw, 2.1rem);
  font-style: italic;
  font-weight: 600;
  line-height: 1;
}

.brand-role {
  margin: 4px 0 0;
  color: #55715e;
  font-size: 0.8rem;
}

.menu-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 8px 14px;
  background: var(--brand-600);
  color: #fff;
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
}

.mobile-menu {
  margin-left: auto;
  position: relative;
}

.mobile-menu > summary {
  list-style: none;
}

.mobile-menu > summary::-webkit-details-marker {
  display: none;
}

.mobile-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: min(260px, calc(100vw - 36px));
  display: grid;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: rgba(247, 250, 244, 0.98);
  box-shadow: var(--shadow-soft);
  padding: 10px;
  z-index: 24;
}

.mobile-menu-panel .nav-link {
  border: 0;
  border-radius: 10px;
  padding: 8px 10px;
}

.mobile-menu-panel .nav-link:hover,
.mobile-menu-panel .nav-link:focus-visible,
.mobile-menu-panel .nav-link.active {
  background: #e8f2e4;
}

.mobile-menu-cta {
  width: 100%;
  margin-top: 2px;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 16px;
}

.nav-link {
  color: var(--ink-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 3px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 160ms ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.active {
  border-color: var(--brand-500);
}

.nav-cta {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.btn:focus-visible,
.nav-link:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #184f30;
  outline-offset: 2px;
}

.btn-primary {
  background: var(--brand-600);
  color: #fff;
  box-shadow: 0 10px 18px rgba(46, 106, 61, 0.22);
}

.btn-primary:hover {
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  border-color: #c7d8c3;
  color: #1f4f2f;
}

.btn-small {
  padding: 10px 16px;
  font-size: 0.78rem;
}

main {
  padding-bottom: 20px;
}

.section {
  padding: 26px 0;
}

.hero-grid,
.split-grid,
.contact-grid,
.bio-grid,
.two-col {
  display: grid;
  gap: 18px;
}

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid #b8cdb0;
  border-radius: 999px;
  background: #e8f2e4;
  color: var(--brand-600);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 8px 14px;
}

.display-title {
  margin: 10px 0 0;
  color: var(--ink-strong);
  font-family: "Fraunces", serif;
  font-size: clamp(2rem, 6.2vw, 4.5rem);
  font-style: italic;
  font-weight: 600;
  line-height: 1.03;
}

.section-title {
  margin: 10px 0 0;
  color: var(--ink-title);
  font-family: "Fraunces", serif;
  font-size: clamp(1.9rem, 5vw, 3.5rem);
  font-style: italic;
  font-weight: 600;
  line-height: 1.08;
}

.lead {
  margin: 14px 0 0;
  color: var(--ink-muted);
  font-size: clamp(1rem, 1.9vw, 1.25rem);
  max-width: 68ch;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.hero-image,
.visual-card,
.about-portrait,
.detail-image {
  border-radius: var(--radius-2xl);
  border: 1px solid #c6d8c0;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  min-height: 290px;
}

.hero-image img,
.visual-card img,
.about-portrait img,
.detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stats-grid,
.cards-grid,
.education-grid {
  display: grid;
  gap: 12px;
}

.card,
.stat-card,
.pub-row,
.form-card,
.detail-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  background: var(--surface);
}

.stat-card {
  padding: 20px;
}

.stat-label {
  margin: 0;
  color: #55715e;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-value {
  margin: 6px 0 0;
  color: var(--ink-title);
  font-family: "Fraunces", serif;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-style: italic;
  line-height: 1;
}

.panel-soft {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
  background: var(--surface-soft);
  padding: 24px;
}

.kicker {
  margin: 0;
  color: var(--brand-500);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.list-check {
  margin: 12px 0 0;
  padding-left: 18px;
}

.list-check li {
  margin: 6px 0;
  color: #2b4f34;
}

.card {
  padding: 20px;
}

.card-title {
  margin: 0;
  color: var(--ink-title);
  font-family: "Fraunces", serif;
  font-size: clamp(1.45rem, 3.1vw, 2rem);
  font-style: italic;
  line-height: 1.15;
}

.card-body {
  margin: 10px 0 0;
  color: var(--ink-muted);
  font-size: 0.94rem;
}

.card-link {
  margin-top: 12px;
  display: inline-block;
  color: var(--brand-600);
  font-weight: 700;
  font-size: 0.86rem;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.link-row .card-link {
  margin-top: 0;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid #b8cdb0;
  border-radius: 999px;
  background: #e8f2e4;
  color: #2d4a34;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 7px 12px;
}

.pub-list {
  display: grid;
  gap: 10px;
}

.pub-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
}

.pub-row span:last-child {
  color: #5c7768;
  font-size: 0.82rem;
  white-space: nowrap;
}

.cta-band {
  border-radius: var(--radius-xl);
  background: linear-gradient(90deg, #1e3a28, #163224);
  color: #f3f8ee;
  padding: 26px 20px;
  display: grid;
  gap: 12px;
  align-items: center;
}

.cta-band p {
  margin: 8px 0 0;
  color: #d3e2d0;
}

.cta-band .section-title {
  color: #f3f8ee;
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.site-footer {
  margin-top: 26px;
  background: linear-gradient(90deg, #14281d, #0f2519);
  color: var(--footer-ink);
}

.footer-inner {
  display: grid;
  gap: 16px;
  padding: 24px 0;
}

.footer-brand {
  margin: 0;
  font-family: "Fraunces", serif;
  font-size: clamp(1.45rem, 2.8vw, 2rem);
  font-style: italic;
}

.footer-meta,
.footer-copy {
  margin: 6px 0 0;
  color: var(--footer-subtle);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.footer-links a {
  color: #d5e3d1;
  font-size: 0.83rem;
  font-weight: 600;
}

.about-portrait {
  background: linear-gradient(180deg, #e8f2e4, #d6e8d2);
  padding: 16px;
}

.about-portrait figure {
  margin: 0;
}

.about-portrait figcaption {
  color: #355840;
  text-align: center;
  font-size: 0.82rem;
  margin-top: 10px;
}

.focus-list {
  margin: 10px 0 0;
  padding-left: 18px;
}

.focus-list li {
  margin: 8px 0;
  font-weight: 600;
}

.degree-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: var(--brand-600);
  color: #fff;
  font-size: 0.73rem;
  font-weight: 700;
  padding: 5px 10px;
}

.form-card,
.detail-card {
  padding: 20px;
}

.form-stack {
  display: grid;
  gap: 10px;
}

input,
textarea {
  width: 100%;
  border: 1px solid #d6e4d0;
  border-radius: var(--radius-s);
  background: var(--surface-soft-2);
  color: var(--ink-body);
  font: inherit;
  padding: 12px 14px;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

label {
  display: block;
  font-size: 0.8rem;
  color: #355840;
  font-weight: 700;
  margin-bottom: 6px;
}

.field {
  display: grid;
}

.detail-card {
  background: var(--surface-soft);
  border-color: var(--border-soft);
}

.detail-list {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.detail-list li {
  margin: 6px 0;
  color: #2d4a34;
}

.home-main {
  position: relative;
}

.butterfly-field {
  display: none;
}

@keyframes wing-flap-left {
  0%,
  100% {
    transform: rotate(-16deg);
  }
  50% {
    transform: rotate(-50deg);
  }
}

@keyframes wing-flap-right {
  0%,
  100% {
    transform: rotate(16deg);
  }
  50% {
    transform: rotate(50deg);
  }
}

@keyframes butterfly-drift-1 {
  0% {
    transform: translate(-8vw, 18vh) rotate(6deg) scale(0.92);
  }
  18% {
    transform: translate(18vw, 6vh) rotate(-8deg) scale(1);
  }
  34% {
    transform: translate(37vw, 22vh) rotate(10deg) scale(0.95);
  }
  52% {
    transform: translate(56vw, 10vh) rotate(-6deg) scale(1.02);
  }
  70% {
    transform: translate(74vw, 28vh) rotate(8deg) scale(0.96);
  }
  86% {
    transform: translate(92vw, 14vh) rotate(-5deg) scale(1);
  }
  100% {
    transform: translate(108vw, 24vh) rotate(7deg) scale(0.94);
  }
}

@keyframes butterfly-drift-2 {
  0% {
    transform: translate(106vw, 26vh) rotate(-11deg) scale(0.94);
  }
  20% {
    transform: translate(82vw, 40vh) rotate(7deg) scale(1.01);
  }
  36% {
    transform: translate(64vw, 22vh) rotate(-9deg) scale(0.96);
  }
  54% {
    transform: translate(46vw, 36vh) rotate(8deg) scale(1);
  }
  72% {
    transform: translate(28vw, 20vh) rotate(-7deg) scale(0.93);
  }
  88% {
    transform: translate(12vw, 34vh) rotate(6deg) scale(0.99);
  }
  100% {
    transform: translate(-12vw, 24vh) rotate(-10deg) scale(0.95);
  }
}

@keyframes butterfly-drift-3 {
  0% {
    transform: translate(-10vw, 60vh) rotate(5deg) scale(0.95);
  }
  16% {
    transform: translate(16vw, 44vh) rotate(-8deg) scale(1);
  }
  34% {
    transform: translate(38vw, 62vh) rotate(9deg) scale(0.94);
  }
  50% {
    transform: translate(54vw, 40vh) rotate(-6deg) scale(1.01);
  }
  70% {
    transform: translate(72vw, 58vh) rotate(8deg) scale(0.96);
  }
  86% {
    transform: translate(88vw, 42vh) rotate(-7deg) scale(1);
  }
  100% {
    transform: translate(106vw, 56vh) rotate(6deg) scale(0.94);
  }
}

@keyframes butterfly-drift-4 {
  0% {
    transform: translate(108vw, 70vh) rotate(-8deg) scale(0.92);
  }
  18% {
    transform: translate(86vw, 54vh) rotate(7deg) scale(1);
  }
  38% {
    transform: translate(64vw, 72vh) rotate(-9deg) scale(0.95);
  }
  56% {
    transform: translate(48vw, 52vh) rotate(6deg) scale(1.02);
  }
  74% {
    transform: translate(30vw, 70vh) rotate(-8deg) scale(0.95);
  }
  90% {
    transform: translate(14vw, 56vh) rotate(7deg) scale(1);
  }
  100% {
    transform: translate(-14vw, 74vh) rotate(-10deg) scale(0.92);
  }
}

@keyframes butterfly-drift-5 {
  0% {
    transform: translate(22vw, 80vh) rotate(7deg) scale(0.95);
  }
  20% {
    transform: translate(34vw, 62vh) rotate(-8deg) scale(1.02);
  }
  40% {
    transform: translate(50vw, 74vh) rotate(9deg) scale(0.94);
  }
  60% {
    transform: translate(66vw, 58vh) rotate(-7deg) scale(1);
  }
  78% {
    transform: translate(54vw, 76vh) rotate(8deg) scale(0.96);
  }
  100% {
    transform: translate(22vw, 80vh) rotate(7deg) scale(0.95);
  }
}

@media (min-width: 768px) {
  .section {
    padding: 34px 0;
  }

  .hero-grid,
  .split-grid,
  .contact-grid,
  .bio-grid,
  .two-col {
    gap: 24px;
  }

  .stats-grid,
  .cards-grid,
  .education-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .cta-band {
    grid-template-columns: 1.15fr auto;
    padding: 34px 28px;
    gap: 24px;
  }
}

@media (min-width: 1024px) {
  .home-page .butterfly-field {
    display: block;
    position: fixed;
    inset: 80px 0 0;
    pointer-events: none;
    z-index: 2;
    overflow: hidden;
  }

  .home-page .butterfly {
    position: absolute;
    width: 2px;
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(180deg, #3f5f46, #6f9071);
    opacity: 0.2;
    filter: drop-shadow(0 2px 3px rgba(20, 40, 29, 0.15));
    will-change: transform;
  }

  .home-page .butterfly::before,
  .home-page .butterfly::after {
    content: "";
    position: absolute;
    top: 0;
    width: 11px;
    height: 9px;
    border-radius: 72% 72% 56% 56%;
    background: radial-gradient(circle at 30% 30%, #f5f8f2 0%, #b7cfae 52%, #7b9d72 100%);
  }

  .home-page .butterfly::before {
    right: 1px;
    transform-origin: right center;
    animation: wing-flap-left 1050ms ease-in-out infinite;
  }

  .home-page .butterfly::after {
    left: 1px;
    transform-origin: left center;
    animation: wing-flap-right 1050ms ease-in-out infinite;
  }

  .home-page .butterfly-1 {
    animation: butterfly-drift-1 33s cubic-bezier(0.43, 0.05, 0.57, 0.95) infinite;
  }

  .home-page .butterfly-2 {
    animation: butterfly-drift-2 37s cubic-bezier(0.43, 0.05, 0.57, 0.95) infinite -8s;
  }

  .home-page .butterfly-3 {
    animation: butterfly-drift-3 34s cubic-bezier(0.43, 0.05, 0.57, 0.95) infinite -15s;
  }

  .home-page .butterfly-4 {
    animation: butterfly-drift-4 40s cubic-bezier(0.43, 0.05, 0.57, 0.95) infinite -12s;
  }

  .home-page .butterfly-5 {
    animation: butterfly-drift-5 26s ease-in-out infinite -6s;
  }

  .nav-inner {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 20px 0;
  }

  .mobile-menu {
    display: none;
  }

  .nav-links {
    display: flex;
    margin-left: auto;
    gap: 24px;
  }

  .nav-cta {
    display: inline-flex;
  }

  .hero-grid {
    grid-template-columns: 1.06fr 0.94fr;
    align-items: center;
  }

  .split-grid {
    grid-template-columns: 1fr 0.88fr;
    align-items: stretch;
  }

  .stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .cards-grid,
  .education-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .bio-grid {
    grid-template-columns: 1.35fr 0.85fr;
  }

  .contact-grid {
    grid-template-columns: 1fr 430px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-page .butterfly-field {
    display: none !important;
  }
}