:root {
  --bg: #f6f4f1;
  --surface: #ffffff;
  --text: #111111;
  --muted: #667085;
  --border: #e5ddd3;
  --accent: #0f1c3f;
  --shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --max-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #ece6de;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  flex-shrink: 0;
}

.brand-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

.brand-subtitle {
  margin-top: 2px;
  font-size: 14px;
  color: var(--muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 22px;
}

.nav a {
  font-size: 15px;
  color: #3f3f46;
  white-space: nowrap;
}

.nav a:hover {
  color: #000000;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 42px 28px 80px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: 54px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  background: var(--surface);
  color: #5f6f86;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-title {
  margin: 22px 0 24px;
  font-size: clamp(58px, 8vw, 96px);
  line-height: 0.96;
  letter-spacing: -0.045em;
  font-weight: 800;
}

.hero-text {
  max-width: 760px;
  margin: 0 0 22px;
  font-size: 19px;
  color: #263445;
}

.hero-text.secondary {
  color: #5f6b7a;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 24px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: #1a1a1a;
  font-size: 15px;
  font-weight: 700;
  transition: 0.2s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.info-card {
  background: var(--surface);
  border: 1px solid #e8e1d9;
  border-radius: 26px;
  padding: 22px 22px 20px;
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
}

.info-label {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 800;
  color: #6b7280;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.info-value {
  font-size: 16px;
  color: #1d2735;
}

.hero-image-wrap {
  width: 100%;
  min-width: 0;
}

.hero-image-card {
  width: 100%;
  min-height: 760px;
  background: var(--surface);
  border: 1px solid #e6dfd7;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
}

.hero-image-card img {
  width: 100%;
  height: 100%;
  max-height: 820px;
  object-fit: contain;
  object-position: center center;
  border-radius: 24px;
}

.section {
  margin-top: 92px;
}

.section-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: start;
}

.section-kicker {
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #6b7280;
}

.section-title {
  margin: 0;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.section-text p {
  margin: 0 0 18px;
  color: #374151;
  font-size: 16px;
}

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

.inline-link:hover {
  text-decoration: underline;
}

.cards-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}

.card,
.org-card,
.project-card,
.paper-card,
.experience-card,
.statement-card,
.contact-card,
.interest-card {
  background: var(--surface);
  border: 1px solid #e8e1d9;
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
}

.card,
.statement-card,
.contact-card,
.interest-card {
  padding: 28px;
}

.org-card {
  display: block;
  padding: 28px;
  transition: 0.2s ease;
}

.org-card:hover {
  transform: translateY(-2px);
}

.org-card h3 {
  margin: 0 0 12px;
  font-size: 32px;
  line-height: 1.1;
}

.org-card p {
  margin: 0;
  color: #374151;
  font-size: 16px;
}

.org-link {
  margin-top: 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.card h3 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.12;
}

.card p {
  margin: 0;
  color: #374151;
}

.project-list,
.paper-list,
.experience-list,
.interest-list {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.project-card,
.paper-card,
.experience-card {
  padding: 28px;
}

.project-head,
.experience-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.project-title,
.paper-title,
.experience-title {
  margin: 0 0 8px;
  font-size: 30px;
  line-height: 1.12;
}

.project-tag,
.paper-type,
.experience-org {
  color: #6b7280;
  font-size: 14px;
}

.project-period,
.experience-period {
  border: 1px solid #e7dfd7;
  background: #faf8f5;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
  color: #6b7280;
  white-space: nowrap;
}

.project-summary,
.paper-description,
.experience-description,
.statement-card p,
.contact-card p,
.interest-card p {
  color: #374151;
  font-size: 16px;
}

.project-details {
  margin: 18px 0 0;
  padding-left: 22px;
  color: #374151;
}

.project-details li {
  margin-bottom: 10px;
}

.paper-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 26px;
}

.pdf-btn {
  min-width: 112px;
  min-height: 112px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 12px;
  line-height: 1.3;
  flex-shrink: 0;
}

.honors-skills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.list {
  margin: 16px 0 0;
  padding-left: 22px;
}

.list li {
  margin-bottom: 10px;
  color: #374151;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.skill-tag {
  border: 1px solid #e7dfd7;
  background: #faf8f5;
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 14px;
  color: #374151;
}

.interests-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.contact-label {
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #6b7280;
}

.contact-value {
  color: #111827;
  font-size: 16px;
}

.spacer-top {
  margin-top: 28px;
}

@media (max-width: 1180px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-image-card {
    min-height: 660px;
  }

  .section-grid,
  .interests-grid,
  .contact-grid,
  .cards-2,
  .honors-skills,
  .info-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .container {
    padding: 28px 18px 56px;
  }

  .hero-title {
    font-size: 56px;
  }

  .hero-text {
    font-size: 17px;
  }

  .hero-image-card {
    min-height: 420px;
    padding: 10px;
  }

  .paper-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .pdf-btn {
    min-width: 96px;
    min-height: 96px;
  }
}