:root {
  --brand: #1F3D1F;
  --brand-dark: #183B1B;
  --brand-light: #2d5a2d;
  
  --bg: #ffffff;
  --bg-soft: #f8faf8;
  --bg-muted: #f0f4f0;
  
  --text: #1a2e1a;
  --text-muted: #5a6d5a;
  --text-light: #8a9a8a;
  
  --line: rgba(31, 61, 31, 0.12);
  --line-dark: rgba(31, 61, 31, 0.2);
  
  --white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  
  --container: 1140px;
  --section-gap: 100px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

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

.container {
  width: min(var(--container), 92%);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand { display: flex; align-items: center; }
.brand__logo { height: 48px; width: auto; }

.nav { display: flex; align-items: center; gap: 8px; }
.nav__toggle { 
  display: none; 
  background: none; 
  border: none; 
  color: var(--brand);
  cursor: pointer;
  padding: 8px;
}

.nav__menu { display: flex; align-items: center; gap: 32px; }

.nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s;
}
.nav__link:hover { color: var(--brand); }

.nav__link--cta {
  background: var(--brand);
  color: var(--white);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.nav__link--cta:hover { 
  background: var(--brand-dark); 
  color: var(--white);
}

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-soft) 0%, var(--bg) 100%);
}

.hero__watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: url('./logo.png') center/contain no-repeat;
  opacity: 0.04;
  pointer-events: none;
}

.hero__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(31, 61, 31, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 0;
}

.hero__tagline {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero__headline {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero__sub {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero__proof {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.proof-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.proof-item__check {
  color: var(--brand);
  font-weight: 700;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: var(--radius-sm);
}

.btn--primary {
  background: var(--brand);
  color: var(--white);
}
.btn--primary:hover { background: var(--brand-dark); }

.btn--lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn--sm {
  padding: 10px 18px;
  font-size: 14px;
}

.btn--full { width: 100%; }

.kpi-band {
  background: var(--brand);
  padding: 48px 0;
}

.kpi-band__inner {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
}

.kpi { text-align: center; }

.kpi__number {
  font-size: 48px;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.kpi__unit {
  font-size: 32px;
  font-weight: 600;
}

.kpi__label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 8px;
}

.kpi__divider {
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
}

.proof-bar {
  padding: 80px 0;
  background: var(--bg);
}

.proof-bar__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.proof-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  transition: all 0.3s;
}

.proof-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.proof-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(31, 61, 31, 0.08);
  border-radius: 50%;
  color: var(--brand);
}

.proof-card__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.proof-card__desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.section { padding: var(--section-gap) 0; }

.section__label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 20px;
}

.section__title--center { text-align: center; }

.section__desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 560px;
}

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

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.split__text { max-width: 480px; }

.check-list {
  list-style: none;
  margin-top: 32px;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}

.check-list__icon {
  color: var(--brand);
  font-weight: 700;
}

.visual-card {
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
}

.visual-card__img {
  max-width: 280px;
  height: auto;
  opacity: 0.9;
}

.section--statement {
  background: var(--bg-muted);
  padding: 100px 0;
}

.statement { text-align: center; }

.statement__text {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  color: var(--brand);
  font-style: italic;
  line-height: 1.4;
}

.statement__cite {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 16px;
  font-style: normal;
}

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

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.service-card {
  padding: 40px 32px;
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  transition: all 0.3s;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand);
}

.service-card__number {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 16px;
}

.service-card__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.service-card__desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.section--contact {
  background: var(--bg-soft);
  padding: 100px 0;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-details { margin-top: 32px; }

.contact-detail {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  color: var(--text-muted);
  font-size: 14px;
}

.contact-detail svg { color: var(--brand); flex-shrink: 0; }

.contact-form-wrapper {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-form { display: flex; flex-direction: column; gap: 20px; }

.form-group { display: flex; flex-direction: column; }

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.required { color: var(--brand); }

.form-group input,
.form-group select,
.form-group textarea {
  padding: 14px 16px;
  font-size: 15px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brand);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-agree {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}

.form-agree input {
  width: 18px;
  height: 18px;
  accent-color: var(--brand);
}

.footer {
  background: var(--text);
  color: var(--white);
  padding: 48px 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer__brand { display: flex; align-items: center; gap: 16px; }

.footer__logo { 
  height: 40px; 
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer__name {
  font-size: 18px;
  font-weight: 700;
}

.footer__slogan {
  font-size: 13px;
  opacity: 0.7;
}

.footer__legal { text-align: right; }

.footer__legal p {
  font-size: 13px;
  opacity: 0.6;
  margin-bottom: 4px;
}

.footer__copy { opacity: 0.4; }

.sticky-cta {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
}

.sticky-cta.show {
  opacity: 1;
  pointer-events: auto;
}

.sticky-cta__text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

@media (max-width: 900px) {
  .proof-bar__grid,
  .services-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .split,
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .split__text { max-width: 100%; }
  
  .kpi-band__inner { gap: 32px; }
  .kpi__divider { display: none; }
  
  .hero__proof { flex-direction: column; gap: 12px; }
}

@media (max-width: 768px) {
  .nav__toggle { display: block; }
  
  .nav__menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }
  
  .nav__menu.open { display: flex; }
  
  .nav__link--cta {
    text-align: center;
    margin-top: 8px;
  }
  
  .topbar__inner { height: 64px; }
  .brand__logo { height: 40px; }
  
  .hero { min-height: 70vh; }
  .hero__watermark { width: 400px; height: 400px; }
  
  .contact-form-wrapper { padding: 24px; }
  
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
  
  .footer__legal { text-align: center; }
}