:root {
  --bg: #f4f8f6;
  --surface: #ffffff;
  --line: #dfe8e2;
  --text: #163326;
  --muted: #4b6357;
  --primary: #1f8b5f;
  --primary-strong: #136949;
  --accent: #e8f6ef;
  --warn: #fff4ee;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

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

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: rgba(244, 248, 246, 0.85);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--primary-strong);
}

.logo img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  object-fit: cover;
  border: 1px solid #d5e6db;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.95rem;
  color: var(--muted);
}

.main-nav a:hover {
  color: var(--text);
}

.hero {
  padding: 64px 0 36px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 26px;
  align-items: center;
}

.badge {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--primary-strong);
  font-size: 0.86rem;
  font-weight: 700;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(2rem, 4.3vw, 3.3rem);
  line-height: 1.14;
  margin: 0 0 14px;
}

.subtitle {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 1.03rem;
  max-width: 62ch;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  border-radius: 12px;
  padding: 0 18px;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn.primary {
  background: var(--primary);
  color: #fff;
}

.btn.primary:hover {
  background: var(--primary-strong);
}

.btn.secondary {
  border-color: var(--line);
  background: var(--surface);
}

.btn.secondary:hover {
  border-color: #c9d8cf;
}

.tiny-note {
  margin-top: 11px;
  color: #63756b;
  font-size: 0.86rem;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 18px 40px rgba(22, 51, 38, 0.08);
}

.phone-title {
  margin: 0 0 14px;
  font-size: 1rem;
  font-weight: 700;
}

.hero-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.hero-card li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid #edf2ee;
  padding: 10px 0;
  font-size: 0.94rem;
}

.hero-card li span {
  color: var(--muted);
}

.mini-chart {
  display: flex;
  gap: 7px;
  align-items: flex-end;
  min-height: 92px;
  margin-top: 14px;
}

.mini-chart span {
  display: inline-block;
  width: 20px;
  border-radius: 7px 7px 4px 4px;
  background: linear-gradient(180deg, #58bb89 0%, #1f8b5f 100%);
}

.section {
  padding: 68px 0;
}

.section.alt {
  background: #edf5f0;
}

.section-head {
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0;
  color: var(--primary-strong);
  font-weight: 700;
  font-size: 0.88rem;
}

h2 {
  margin: 8px 0 0;
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  line-height: 1.3;
}

h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.compare-card {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 20px;
}

.compare-card.warn {
  background: var(--warn);
}

.compare-card.good {
  background: var(--accent);
}

.compare-card ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.compare-card li + li {
  margin-top: 8px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.steps article {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  padding: 18px;
}

.steps article span {
  display: inline-flex;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--primary-strong);
  font-weight: 800;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.steps p,
.feature-card p,
.muted {
  margin: 0;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  padding: 18px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.preview-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  padding: 18px;
}

.preview-card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.shot {
  margin: 0;
  min-height: 280px;
  border: 1px solid #e9efe9;
  border-radius: 14px;
  background: #f4f8f6;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.icon-shot img {
  object-fit: contain;
  padding: 16px;
  background: #fff;
}

.shot.empty::before {
  content: attr(data-label);
  color: #769184;
  font-size: 0.92rem;
  font-weight: 600;
}

.timeline-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.timeline {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  border-left: 3px solid #b8dcca;
  padding: 4px 0 15px 14px;
}

.timeline li strong {
  display: block;
}

.timeline li span {
  color: var(--muted);
  font-size: 0.95rem;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  padding: 14px 16px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list p {
  margin: 10px 0 0;
  color: var(--muted);
}

.download {
  padding: 44px 0 82px;
}

.download-card {
  background: linear-gradient(135deg, #1f8b5f 0%, #176f4d 100%);
  color: #fff;
  border-radius: 20px;
  padding: 36px;
}

.download-card h2 {
  margin-top: 0;
}

.download-card p {
  margin: 10px 0 22px;
  max-width: 64ch;
  color: #e8f8ee;
}

.download-card .btn.secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #f8fcfa;
  padding: 18px 0 30px;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  color: #607267;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 14px;
}

@media (max-width: 980px) {
  .hero-grid,
  .timeline-wrap {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 660px) {
  .main-nav {
    display: none;
  }

  .section {
    padding: 54px 0;
  }

  .steps,
  .feature-grid,
  .compare-grid,
  .preview-grid {
    grid-template-columns: 1fr;
  }

  .download-card {
    padding: 24px;
  }
}