:root {
  --black: #0b0b0d;
  --ink: #171717;
  --muted: #666;
  --line: #e8e4dc;
  --paper: #fbfaf7;
  --white: #fff;
  --gold: #c8973a;
  --gold-dark: #8b6724;
  --gold-soft: #f4ead6;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  letter-spacing: 0;
}

a { color: inherit; }

.service-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid rgba(0,0,0,0.08);
  background: rgba(251,250,247,0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 900;
  text-decoration: none;
}

.brand img { width: auto; height: 28px; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-link {
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  color: rgba(0,0,0,0.66);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--black);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: clamp(34px, 6vw, 82px);
  align-items: center;
  padding: clamp(54px, 9vw, 110px) clamp(20px, 5vw, 72px) 58px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold-dark);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

h1 {
  margin: 0;
  color: var(--black);
  font-size: clamp(38px, 5.4vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead {
  max-width: 720px;
  margin: 24px 0 0;
  color: #424242;
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.7;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
  text-decoration: none;
}

.btn.primary { background: var(--gold); color: #fff; }
.btn.secondary { border: 1px solid var(--line); background: #fff; color: var(--black); }

.hero-card {
  overflow: hidden;
  border-radius: 22px;
  background: #111;
  box-shadow: 0 28px 80px rgba(0,0,0,0.22);
}

.hero-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-note {
  padding: 22px 24px 24px;
  color: rgba(255,255,255,0.86);
  font-size: 15px;
  line-height: 1.65;
}

.section {
  padding: 64px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
}

.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.section-title {
  margin: 0 0 26px;
  color: var(--black);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
}

.card strong {
  display: block;
  margin-bottom: 10px;
  color: var(--black);
  font-size: 17px;
}

.card p, .list li, .process li {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.list, .process {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.list li, .process li {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.process {
  counter-reset: step;
}

.process li {
  position: relative;
  padding-left: 62px;
}

.process li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 18px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gold);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
}

.cta-band {
  padding: 70px clamp(20px, 5vw, 72px);
  background: var(--black);
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  margin: 0 auto 18px;
  max-width: 820px;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.2;
}

.cta-band p {
  max-width: 720px;
  margin: 0 auto 30px;
  color: rgba(255,255,255,0.72);
  font-size: 17px;
  line-height: 1.7;
}

.top-button {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 30;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(200,151,58,0.55);
  border-radius: 999px;
  background: rgba(11,11,13,0.86);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.top-button.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

footer {
  padding: 28px clamp(20px, 5vw, 72px);
  color: rgba(0,0,0,0.5);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .nav-actions .nav-link { display: none; }
}

@media (max-width: 560px) {
  .service-nav { padding: 12px 16px; }
  .brand { font-size: 16px; }
  .nav-cta { min-height: 36px; padding: 0 13px; font-size: 12px; }
  .hero { padding-top: 42px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
  .section { padding-top: 48px; padding-bottom: 48px; }
  .top-button { right: 16px; bottom: 18px; width: 48px; height: 48px; }
}