:root {
  --bg: #F8FAFC;
  --bg-elevated: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-input: #F1F5F9;
  --bg-dark: #0A1628;
  --surface: #FFFFFF;
  --surface2: #FFFFFF;
  --surface3: #F8FAFC;
  --surface4: #F1F5F9;
  --border: #E2E8F0;
  --border2: #CBD5E1;
  --accent: #0EA5E9;
  --accent-dark: #0284C7;
  --accent-dim: rgba(14,165,233,0.1);
  --accent-soft: rgba(14,165,233,0.1);
  --accent-glow: rgba(14,165,233,0.3);
  --accent2: #14B8A6;
  --gradient-main: linear-gradient(135deg, #0EA5E9, #14B8A6);
  --gold: #F59E0B;
  --gold-soft: rgba(245,158,11,0.12);
  --text: #0F172A;
  --text-secondary: #475569;
  --text-mid: #475569;
  --text-dim: #94A3B8;
  --danger: #EF4444;
  --success: #10B981;
  --warning: #F59E0B;
  --card-w: 420px;
  --card-h: 240px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 3px solid rgba(14, 165, 233, 0.42);
  outline-offset: 3px;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(14,165,233,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,165,233,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: 0;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 28px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Outfit', sans-serif;
  font-size: 22px;
  font-weight: 800;
  cursor: pointer;
}
.logo-dot {
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 14px var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.logo-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-mid);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.btn {
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-family: 'Noto Sans KR', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  font-weight: 500;
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-mid);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary {
  background: var(--gradient-main);
  color: var(--bg);
  font-weight: 600;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* Pages */
.page { display: none; min-height: 100vh; position: relative; z-index: 1; }
.page.active { display: block; }

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 2rem;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 30%, rgba(14,165,233,0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(20,184,166,0.08) 0%, transparent 50%);
}
.hero-content {
  text-align: center;
  z-index: 1;
  max-width: 800px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(14,165,233,0.2);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 2rem;
  font-family: 'DM Mono', monospace;
}
.hero h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero h1 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p {
  font-size: 1.1rem;
  color: var(--text-mid);
  max-width: 550px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-large {
  padding: 14px 32px;
  font-size: 15px;
  border-radius: 12px;
}

/* Sections */
.section { padding: 5rem 2rem; }
.section.alt { background: var(--surface); }
.section-title { text-align: center; margin-bottom: 3.5rem; }
.section-title h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.section-title h2 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-title p { color: var(--text-mid); font-size: 1rem; }

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}
.feature-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.75rem;
  transition: all 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}
.feature-icon {
  width: 50px; height: 50px;
  background: var(--gradient-main);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}
.feature-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.feature-card p { color: var(--text-mid); line-height: 1.6; font-size: 0.9rem; }

/* Steps */
.steps {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  max-width: 900px;
  margin: 0 auto;
}
.step { text-align: center; max-width: 240px; }
.step-number {
  width: 60px; height: 60px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bg);
  margin: 0 auto 1rem;
}
.step h3 { font-size: 1rem; margin-bottom: 0.4rem; }
.step p { color: var(--text-mid); line-height: 1.6; font-size: 0.9rem; }

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 950px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.3s ease;
}
.pricing-card.popular {
  border-color: var(--accent);
  position: relative;
}
.pricing-card.popular::before {
  content: 'BEST';
  position: absolute;
  top: -10px; left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-main);
  color: var(--bg);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
}
.pricing-card:hover { transform: translateY(-6px); }
.pricing-name { font-size: 1.3rem; font-weight: 600; margin-bottom: 0.3rem; }
.pricing-desc { color: var(--text-mid); font-size: 0.85rem; margin-bottom: 1.25rem; }
.pricing-price {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
}
.pricing-price span { font-size: 0.9rem; font-weight: 400; color: var(--text-mid); }
.pricing-features { list-style: none; margin-bottom: 1.5rem; }
.pricing-features li {
  padding: 0.5rem 0;
  color: var(--text-mid);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
}
.pricing-features li::before { content: '✓'; color: var(--accent); font-weight: 600; }

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}
.review-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.75rem;
}
.review-stars { color: var(--gold); font-size: 1rem; margin-bottom: 0.75rem; }
.review-text { color: var(--text-mid); line-height: 1.7; margin-bottom: 1.25rem; font-style: italic; font-size: 0.95rem; }
.review-author { display: flex; align-items: center; gap: 0.75rem; }
.review-avatar {
  width: 44px; height: 44px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--bg);
}
.review-name { font-weight: 600; font-size: 0.95rem; }
.review-role { color: var(--text-mid); font-size: 0.8rem; }

/* Contact */
.contact-container { max-width: 500px; margin: 0 auto; }
.contact-form {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
}
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-mid);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface3);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { min-height: 100px; resize: vertical; }

/* Footer */
.footer {
  padding: 3rem 2rem 1.5rem;
  border-top: 1px solid var(--border);
}
.footer-content {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem;
}
.footer-brand p { color: var(--text-mid); line-height: 1.6; margin-top: 0.75rem; font-size: 0.85rem; }
.footer-links h4 { margin-bottom: 1rem; font-weight: 600; font-size: 0.95rem; }
.footer-links ul { list-style: none; }
.footer-links a {
  color: var(--text-mid);
  text-decoration: none;
  display: block;
  padding: 0.3rem 0;
  font-size: 0.85rem;
  cursor: pointer;
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  max-width: 1100px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 2.2rem; }
}