:root {
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --card: #ffffff;
  --accent: #111827;
  --soft: #f1f5f9;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(248, 250, 252, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 22px;
}

.brand span {
  color: var(--muted);
}

.nav-links {
  display: flex;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
}

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

.hero {
  min-height: 480px;
  display: grid;
  grid-template-columns: 1.5fr 0.8fr;
  align-items: center;
  gap: 64px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  font-weight: 700;
}

h1 {
  max-width: 820px;
  margin: 0;
  line-height: 0.96;
  letter-spacing: -0.08em;
}

.hero-text,
.lead {
  margin: 28px 0 0;
  max-width: 720px;
  font-size: 20px;
  color: var(--muted);
}

.hero-actions {
  margin-top: 20px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-weight: 700;
  font-size: 14px;
}

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

.btn.secondary {
  background: #fff;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.08);
}

.card-line {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.card-line:last-child {
  border-bottom: 0;
}

.card-line span {
  color: var(--muted);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 70px;
}

.stats div {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
}

.stats strong {
  display: block;
  font-size: 38px;
  line-height: 1;
  letter-spacing: -0.06em;
}

.stats span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

.section {
  padding: 80px 0;
  border-top: 1px solid var(--line);
}

.section-title {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 34px;
}

.section-title p {
  margin: 0;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  font-weight: 800;
}

.section-title h2,
.contact-box h2 {
  margin: 0;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -0.06em;
}

.about-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: center;
}

.about-photo {
  margin: 0;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid var(--line);
  background: var(--soft);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.skill-grid,
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.skill-card,
.project-card,
.timeline article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 26px;
}

.skill-card h3,
.project-card h3,
.timeline h3 {
  margin: 0 0 10px;
  letter-spacing: -0.03em;
}

.skill-card p,
.project-card p,
.timeline p {
  margin: 0;
  color: var(--muted);
}

.project-card span,
.timeline span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.timeline {
  display: grid;
  gap: 16px;
}

.contact-box {
  background: var(--accent);
  color: #fff;
  border-radius: 36px;
  padding: 44px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}

.contact-box p {
  color: #cbd5e1;
}

.contact-box .btn.primary {
  background: #fff;
  color: var(--accent);
  border-color: #fff;
  flex: 0 0 auto;
}

.footer {
  padding: 32px 20px;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .hero,
  .section-title,
  .contact-box {
    grid-template-columns: 1fr;
    display: grid;
  }

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

  .stats,
  .skill-grid,
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-links {
    display: none;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .hero {
    min-height: auto;
    padding: 72px 0;
  }

  .stats,
  .skill-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .contact-box {
    padding: 28px;
  }
}