:root {
  --mint: #7fd4c4;
  --mint-deep: #3d9e8f;
  --pink: #f4a9b8;
  --pink-deep: #e05a7a;
  --text: #2b2f36;
  --muted: #5c6470;
  --bg: #f8fbfa;
  --card: #ffffff;
  --shadow: 0 12px 40px rgba(61, 158, 143, 0.12);
  --radius: 18px;
  --max: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Pretendard", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { color: var(--mint-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

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

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

/* GNB */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(127, 212, 196, 0.35);
}

.gnb {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.gnb nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.gnb nav a {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
}

.gnb nav a:hover { color: var(--mint-deep); }

.lang-switch {
  display: flex;
  gap: 4px;
  background: #eef7f5;
  border-radius: 999px;
  padding: 4px;
}

.lang-switch button {
  border: none;
  background: transparent;
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--muted);
}

.lang-switch button.active {
  background: white;
  color: var(--mint-deep);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* Hero */
.hero {
  padding: 56px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--mint), var(--pink));
  color: white;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero p.lead {
  color: var(--muted);
  font-size: 1.08rem;
  margin-bottom: 28px;
  max-width: 520px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--mint-deep), #4db6a3);
  color: white;
  box-shadow: 0 8px 24px rgba(61, 158, 143, 0.35);
}

.btn-secondary {
  background: white;
  color: var(--mint-deep);
  border: 2px solid var(--mint);
}

.hero-visual {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* Sections */
section { padding: 72px 0; }

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 10px;
}

.section-title p {
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(127, 212, 196, 0.25);
}

.feature-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.feature-card .body {
  padding: 22px;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.92rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step {
  background: var(--card);
  padding: 24px;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid rgba(127, 212, 196, 0.3);
}

.step .num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--mint);
  color: white;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.privacy-strip {
  background: linear-gradient(135deg, #eef9f6, #fff5f7);
  border-radius: var(--radius);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.privacy-strip ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.privacy-strip li::before {
  content: "✓";
  color: var(--mint-deep);
  font-weight: 800;
  margin-right: 8px;
}

.cta {
  text-align: center;
  background: linear-gradient(135deg, var(--mint-deep), var(--pink-deep));
  color: white;
  border-radius: 24px;
  padding: 56px 32px;
}

.cta h2 { font-size: 1.8rem; margin-bottom: 12px; }
.cta p { opacity: 0.92; margin-bottom: 24px; }

.store-badges {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.store-badge {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.35);
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 700;
}

/* Footer */
.site-footer {
  background: #1e2429;
  color: #b8c0c8;
  padding: 48px 0 28px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.site-footer h4 {
  color: white;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.site-footer a { color: #9ed9ce; }

.footer-bottom {
  border-top: 1px solid #3a4249;
  padding-top: 20px;
  font-size: 0.85rem;
  text-align: center;
}

/* i18n */
[lang="en"] .ko-only,
[lang="ko"] .en-only { display: none !important; }

@media (max-width: 900px) {
  .hero-grid,
  .privacy-strip,
  .footer-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .gnb nav { display: none; }
}

@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; }
}