:root {
  --color-main: #1B2B4B;
  --color-main-dark: #121E38;
  --color-sub: #C9A66B;
  --color-accent: #4FA8D8;
  --color-text: #22252B;
  --color-bg: #F5F6F8;
  --color-white: #FFFFFF;
  --color-border: #E1E4EA;
  --max-width: 1120px;
  --radius: 10px;
  --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-ko: 'Pretendard', 'Inter', -apple-system, sans-serif;
  --font-zh: 'Heiti SC', 'SimHei', 'Microsoft YaHei', 'PingFang SC', sans-serif;
  --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

html[lang="ko"] body { font-family: var(--font-ko); }
html[lang="zh"] body { font-family: var(--font-zh); }
html[lang="ja"] body { font-family: var(--font-ja); }
html[lang="en"] body,
body { font-family: var(--font-en); }

body {
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-white);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: 0.5px;
  color: var(--color-main);
}

.brand-tagline {
  font-size: 11px;
  color: var(--color-sub);
  font-weight: 600;
  letter-spacing: 0.3px;
}

.main-nav {
  flex: 1;
}

.main-nav > ul {
  display: flex;
  gap: 32px;
  justify-content: center;
}

.main-nav > ul > li {
  position: relative;
}

.main-nav > ul > li > a,
.main-nav .dropdown-toggle {
  display: block;
  padding: 8px 0;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text);
  background: none;
  border: none;
}

.main-nav > ul > li > a:hover,
.main-nav .dropdown-toggle:hover {
  color: var(--color-main);
}

.has-dropdown .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 12px 24px rgba(27, 43, 75, 0.12);
  padding: 8px;
  min-width: 180px;
}

.has-dropdown:hover .dropdown,
.has-dropdown.open .dropdown {
  display: block;
}

.dropdown li a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 14px;
  white-space: nowrap;
}

.dropdown li a:hover {
  background: var(--color-bg);
  color: var(--color-main);
}

.lang-switch {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.lang-switch button {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
}

.lang-switch button.active {
  background: var(--color-main);
  border-color: var(--color-main);
  color: var(--color-white);
}

.nav-toggle {
  display: none;
  border: none;
  background: none;
  font-size: 24px;
  color: var(--color-main);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-main) 0%, var(--color-main-dark) 100%);
  color: var(--color-white);
  padding: 96px 0;
  text-align: center;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  margin: 0 0 20px;
  font-weight: 800;
}

.hero p {
  max-width: 640px;
  margin: 0 auto 32px;
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background: #3D93C4;
}

.btn-outline {
  background: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Sections */
section {
  padding: 80px 0;
}

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

.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--color-main);
  text-align: center;
  margin: 0 0 48px;
}

.section-title.left {
  text-align: left;
  margin-bottom: 24px;
}

/* Service cards */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  background: var(--color-white);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(27, 43, 75, 0.1);
}

.service-card .badge {
  display: inline-block;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--color-main);
  color: var(--color-white);
  font-weight: 800;
  font-size: 16px;
  line-height: 40px;
  text-align: center;
  margin-bottom: 16px;
}

.service-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--color-main);
}

.service-card p {
  margin: 0 0 16px;
  font-size: 14px;
  color: #555;
}

.service-card a {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
}

/* About highlight */
.about-highlight {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.about-highlight h2 {
  color: var(--color-main);
  font-size: 28px;
  margin: 0 0 16px;
}

/* CTA band */
.cta-band {
  background: var(--color-sub);
  color: var(--color-main-dark);
  text-align: center;
}

.cta-band h2 {
  margin: 0 0 12px;
  font-size: 26px;
}

.cta-band p {
  margin: 0 0 28px;
}

.cta-band .btn-primary {
  background: var(--color-main);
}

.cta-band .btn-primary:hover {
  background: var(--color-main-dark);
}

/* Image placeholder */
.image-placeholder {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: #8A93A6;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  font-size: 14px;
  font-weight: 600;
}

/* Page header (inner pages) */
.page-header {
  background: var(--color-bg);
  padding: 56px 0;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  color: var(--color-main);
  font-size: clamp(26px, 3.5vw, 36px);
  margin: 0;
}

/* About page */
.greeting-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 64px;
}

.greeting-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
}

.greeting-card .role {
  display: inline-block;
  background: var(--color-main);
  color: var(--color-white);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.greeting-card .name {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-main);
  margin: 0 0 16px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.info-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--color-bg);
}

.info-card h3 {
  color: var(--color-main);
  margin: 0 0 8px;
  font-size: 16px;
}

.info-card p {
  margin: 0;
  font-size: 14px;
  color: #444;
}

/* Service detail page */
.service-detail {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}

.service-detail h1 {
  color: var(--color-main);
  font-size: 32px;
  margin: 0 0 8px;
}

.service-detail .subtitle {
  color: var(--color-sub);
  font-weight: 700;
  margin: 0 0 20px;
}

.service-detail ul {
  margin: 20px 0;
}

.service-detail ul li {
  padding-left: 22px;
  position: relative;
  margin-bottom: 10px;
  font-size: 14px;
}

.service-detail ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.service-note {
  margin-top: 24px;
  padding: 16px;
  border-left: 3px solid var(--color-sub);
  background: var(--color-bg);
  font-size: 13px;
  color: #555;
}

/* Contact */
.contact-box {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 48px 32px;
}

.contact-box .email-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-sub);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.contact-box .email-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-main);
  margin-bottom: 24px;
}

.partner-note {
  max-width: 640px;
  margin: 48px auto 0;
  padding: 24px;
  background: var(--color-bg);
  border-radius: var(--radius);
  text-align: center;
}

.partner-note h3 {
  color: var(--color-main);
  margin: 0 0 8px;
}

/* News */
.news-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}

.news-block h2 {
  color: var(--color-main);
  margin: 0 0 12px;
  font-size: 20px;
}

/* Footer */
.site-footer {
  background: var(--color-main-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 40px 0;
  margin-top: 80px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a:hover {
  color: var(--color-white);
}

/* Responsive */
@media (max-width: 860px) {
  .main-nav, .lang-switch { display: none; }
  .nav-toggle { display: block; order: 1; }
  .brand { order: 0; }

  .header-inner.nav-open {
    flex-wrap: wrap;
    height: auto;
    padding-bottom: 16px;
  }

  .header-inner.nav-open .main-nav {
    display: block;
    order: 2;
    width: 100%;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
    margin-top: 16px;
  }

  .header-inner.nav-open .main-nav > ul {
    flex-direction: column;
    gap: 4px;
  }

  .header-inner.nav-open .has-dropdown .dropdown {
    display: block;
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 12px;
  }

  .header-inner.nav-open .lang-switch {
    display: flex;
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
    margin-top: 16px;
  }

  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .greeting-block { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .service-detail { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .service-grid { grid-template-columns: 1fr; }
  .hero { padding: 64px 0; }
  section { padding: 56px 0; }
}