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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  background-color: #ffffff;
  color: #111111;
  line-height: 1.7;
}

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

button {
  font: inherit;
}

.header {
  width: 100%;
  padding: 28px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #eeeeee;
  z-index: 100;
}

.brand {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
}

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  font-size: 14px;
  color: #555555;
  transition: color 0.2s ease;
}

.nav a:hover {
  color: #111111;
}

.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 120px 48px 110px;
}

.eyebrow {
  font-size: 12px;
  letter-spacing: 2px;
  color: #777777;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: 64px;
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 28px;
}

.hero h1 span {
  color: #000000;
}

.hero-text {
  max-width: 720px;
  font-size: 18px;
  color: #555555;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.button {
  padding: 13px 20px;
  border-radius: 999px;
  border: 1px solid #dddddd;
  cursor: pointer;
  transition: all 0.2s ease;
}

.button.primary {
  background-color: #111111;
  color: #ffffff;
  border-color: #111111;
}

.button.primary:hover {
  opacity: 0.9;
}

.button.secondary {
  background-color: #ffffff;
  color: #111111;
}

.button.secondary:hover {
  background-color: #f5f5f5;
}

.message-box {
  font-size: 15px;
  color: #666666;
}

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 70px 48px;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
}

.border-top {
  border-top: 1px solid #eeeeee;
}

.section-label {
  font-size: 12px;
  letter-spacing: 2px;
  color: #888888;
  padding-top: 8px;
}

.section-content h2 {
  font-size: 34px;
  line-height: 1.25;
  margin-bottom: 22px;
  letter-spacing: -0.5px;
}

.section-content p {
  max-width: 760px;
  color: #4f4f4f;
  margin-bottom: 14px;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skill-item {
  border: 1px solid #ebebeb;
  border-radius: 20px;
  padding: 22px 24px;
  background-color: #fafafa;
}

.skill-name {
  display: block;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #111111;
}

.skill-desc {
  color: #666666;
  font-size: 15px;
}

.focus-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.focus-box > div {
  border: 1px solid #ebebeb;
  border-radius: 20px;
  padding: 24px;
}

.focus-box h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.info-list {
  margin-top: 26px;
  max-width: 520px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid #eeeeee;
}

.info-row span {
  color: #777777;
}

.info-row strong {
  color: #111111;
}

.footer {
  border-top: 1px solid #eeeeee;
  text-align: center;
  padding: 28px 20px 36px;
  color: #888888;
  font-size: 14px;
}

@media (max-width: 900px) {
  .header {
    padding: 22px 20px;
    flex-direction: column;
    gap: 14px;
  }

  .nav {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: 90px 20px 70px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero-text {
    font-size: 16px;
  }

  .section {
    grid-template-columns: 1fr;
    padding: 55px 20px;
    gap: 18px;
  }

  .focus-box {
    grid-template-columns: 1fr;
  }
}