:root {
  --bg: #f5f5f3;
  --bg-alt: #ecece8;
  --text: #151515;
  --muted: #5a5a5a;
  --accent: #1f7a6b;
  --accent-soft: #d6efe9;
  --border: rgba(21, 21, 21, 0.1);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.1);
  --max-width: 1100px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  font-family: "IBM Plex Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

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

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

section {
  padding: 96px 24px;
}

.section-header {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-header h2 {
  font-family: "Sora", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 245, 243, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-family: "Sora", sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
  white-space: nowrap;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--muted);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  display: block;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-open .nav-toggle span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-open .nav-toggle span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

main {
  background: radial-gradient(circle at top left, rgba(31, 122, 107, 0.08), transparent 50%),
    linear-gradient(135deg, rgba(21, 21, 21, 0.02), transparent 60%);
}

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 120px 24px 96px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  align-items: center;
}

.eyebrow {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: "Sora", sans-serif;
  font-size: clamp(2.6rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.tagline {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--muted);
  max-width: 480px;
}

.hero-actions {
  margin-top: 32px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn.primary {
  background: var(--text);
  color: #fff;
  box-shadow: var(--shadow);
}

.btn.primary:hover {
  transform: translateY(-2px);
}

.btn.ghost {
  border-color: var(--border);
  color: var(--text);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.portrait-card {
  background: #fff;
  border-radius: 28px;
  padding: 28px;
  width: min(420px, 90vw);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.portrait-gradient {
  height: 320px;
  border-radius: 22px;
  background: linear-gradient(140deg, #d8e7e3, #f3efe6 55%, #c9d8d3);
  position: relative;
  overflow: hidden;
}

.portrait-gradient::after {
  content: "";
  position: absolute;
  inset: 20% 15% auto auto;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(31, 122, 107, 0.5), transparent 70%);
  border-radius: 50%;
}

.portrait-meta {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.about {
  background: var(--bg-alt);
}

.about-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.about-card {
  background: #fff;
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06);
}

.about-card h3 {
  font-family: "Sora", sans-serif;
  margin-bottom: 12px;
}

.about-card p {
  color: var(--muted);
  line-height: 1.6;
}

.experience {
  padding-bottom: 80px;
}

.timeline {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 20px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 24px;
  padding: 24px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: #fff;
}

.timeline-date {
  font-size: 0.95rem;
  color: var(--muted);
}

.timeline-content h3 {
  font-family: "Sora", sans-serif;
  margin-bottom: 8px;
}

.timeline-content p {
  color: var(--muted);
  line-height: 1.6;
}

.skills {
  background: var(--bg-alt);
}

.skill-grid {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.skill-chip {
  padding: 12px 20px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  font-weight: 500;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
}

.contact-card {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: #fff;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  text-align: left;
}

.contact-card h3 {
  font-family: "Sora", sans-serif;
  margin-bottom: 6px;
}

.contact-card a {
  color: var(--accent);
  font-weight: 500;
}

.site-footer {
  padding: 32px 24px 48px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .hero-visual {
    justify-content: flex-start;
  }

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

  .timeline-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 72px;
    right: 24px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 16px;
    flex-direction: column;
    gap: 12px;
    min-width: 160px;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-open .nav-links {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

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

  .hero {
    padding-top: 96px;
  }

  .contact-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 520px) {
  section {
    padding: 72px 20px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .portrait-card {
    padding: 20px;
  }

  .portrait-gradient {
    height: 260px;
  }
}