:root {
  /*
  Design DNA
  - Style Preset: Minimal Clean Utility
  - Color Strategy: Monochrome + Accent (화이트/라이트그레이 + 딥블루 포인트)
  - Layout Pattern: Centered Container + Section Divider
  - Icon Style: Thin Line SVG Icons
  - Background Pattern: Subtle Linear Gradient
  */
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #0f1724;
  --muted: #5b6673;
  --line: #e3e7ed;
  --accent: #0b1f3a;
  --accent-soft: #1a355a;
  --radius: 14px;
  --container: 1120px;
  --shadow: 0 10px 30px rgba(11, 31, 58, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, #fbfcfe 0%, #f6f7f9 60%, #f2f4f7 100%);
  line-height: 1.6;
}

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

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

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

.section {
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.section:first-of-type {
  border-top: none;
}

.section-title {
  font-size: clamp(1.4rem, 2vw, 1.9rem);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--muted);
  max-width: 640px;
}

header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand span {
  font-weight: 600;
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

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

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

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
}

.hero {
  padding: 88px 0 92px;
}

.hero-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 3.4vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero p {
  color: var(--muted);
  margin: 18px 0 28px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: var(--shadow);
}

.hero-card {
  position: relative;
  padding: 26px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: calc(var(--radius) - 6px);
  border: 1px dashed rgba(11, 31, 58, 0.15);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.services-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 28px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent);
}

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

.about-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
}

.info-box {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 22px;
}

.info-box ul {
  list-style: none;
  display: grid;
  gap: 12px;
}

.info-box li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.95rem;
}

.contact-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.form {
  display: grid;
  gap: 14px;
}

.form input,
.form textarea {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.95rem;
  background: #fff;
}

.form textarea {
  min-height: 120px;
  resize: vertical;
}

.form small {
  color: var(--muted);
}

.form .submit {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px;
  font-weight: 600;
  cursor: pointer;
}

.form .notice {
  min-height: 20px;
  color: var(--accent);
  font-size: 0.9rem;
}

.landmarks {
  background: #f9fafc;
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--line);
}

.business-info {
  display: grid;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--muted);
}

footer {
  padding: 28px 0 40px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  text-align: center;
}

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

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

@media (max-width: 720px) {
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
  }

  nav {
    position: absolute;
    top: 70px;
    right: 20px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px 18px;
    display: none;
    box-shadow: var(--shadow);
  }

  nav.open {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    gap: 14px;
  }

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