/* =========================
   Base Reset
========================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Apple SD Gothic Neo",
    "Noto Sans KR", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #222;
  background: #fff;
}

/* =========================
   Links
========================= */
a {
  color: #1a73e8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* =========================
   Layout
========================= */
.content {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px;
}

/* =========================
   Header
========================= */
.site-header {
  width: 100%;
  border-bottom: 1px solid #eee;
  background: #fff;
}

.header-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo a {
  font-size: 18px;
  font-weight: 700;
  color: #111;
  letter-spacing: -0.02em;
}

/* Navigation */
.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 12px;
}

.main-nav a {
  font-size: 14px;
  color: #333;
  padding: 6px 4px;
  line-height: 1.4;
}

.main-nav a:hover {
  color: #1a73e8;
}

/* =========================
   Footer
========================= */
.site-footer {
  width: 100%;
  border-top: 1px solid #eee;
  background: #fafafa;
  margin-top: 40px;
}

.footer-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 16px;
}

.footer-desc {
  font-size: 14px;
  color: #555;
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-nav ul {
  list-style: none;
  margin: 0 0 16px 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.footer-nav a {
  font-size: 14px;
  color: #333;
}

.footer-nav a:hover {
  color: #1a73e8;
}

.footer-copy {
  font-size: 13px;
  color: #777;
}

/* =========================
   Typography
========================= */
h1 {
  font-size: 24px;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

h2 {
  font-size: 19px;
  line-height: 1.5;
  margin: 32px 0 12px;
}

h3 {
  font-size: 17px;
  margin: 24px 0 8px;
}

p {
  margin: 0 0 16px;
}

/* =========================
   Mobile Optimization
========================= */
@media (max-width: 767px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .main-nav ul {
    flex-wrap: wrap;
    gap: 8px 12px;
  }

  .content {
    padding: 20px 16px;
  }

  h1 {
    font-size: 22px;
  }

  h2 {
    font-size: 18px;
  }
}

/* =========================
   Desktop Enhancement
========================= */
@media (min-width: 1024px) {
  .content,
  .header-inner,
  .footer-inner {
    max-width: 900px;
  }
}