:root {
  --bg: #f7f3ea;
  --bg-2: #eef3f7;
  --surface: #ffffff;
  --surface-2: #f8f9fb;
  --text: #101820;
  --muted: #4b5b66;
  --accent: #ff6b35;
  --accent-2: #2ec4b6;
  --line: #e2e7ee;
  --shadow: 0 18px 40px rgba(16, 24, 32, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Noto Sans KR', sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, #fff2e6 0%, transparent 45%),
              radial-gradient(circle at 80% 0%, #e0f2ff 0%, transparent 40%),
              var(--bg);
  line-height: 1.6;
}

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

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

.bg-noise {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

.container {
  width: min(1200px, 90vw);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: rgba(247, 243, 234, 0.8);
  border-bottom: 1px solid var(--line);
  z-index: 10;
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'Manrope', sans-serif;
  font-size: 20px;
  letter-spacing: -0.5px;
}

.logo strong {
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 8px 14px;
  border-radius: 999px;
}

.hero {
  padding: 80px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--accent-2);
  font-weight: 700;
}

h1, h2, h3, h4 {
  font-family: 'Manrope', sans-serif;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.15;
}

.lead {
  font-size: 18px;
  color: var(--muted);
}

.cta-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  font-family: 'Manrope', sans-serif;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 25px rgba(255, 107, 53, 0.3);
}

.btn.ghost {
  border-color: var(--line);
  background: transparent;
  color: var(--text);
}

.btn.tiny {
  padding: 8px 14px;
  font-size: 13px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.btn:hover {
  transform: translateY(-1px);
}

.trust-row {
  display: flex;
  gap: 16px;
  margin-top: 22px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
}

.hero-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.hero-mini {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.hero-mini-buttons {
  display: flex;
  gap: 10px;
}

.section {
  padding: 70px 0;
}

.page-hero {
  padding: 70px 0 30px;
}

.page-content {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.page-content h2 {
  margin-top: 22px;
}

.page-content ul {
  padding-left: 18px;
  color: var(--muted);
}

.page-content p {
  color: var(--muted);
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(280px, 1.2fr) minmax(240px, 0.8fr);
  gap: 24px;
  align-items: start;
}

.contact-form form {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.contact-info {
  background: var(--surface-2);
  border-radius: 16px;
  border: 1px solid var(--line);
  padding: 20px;
}

.contact-info h3 {
  margin-top: 22px;
}

.checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13px;
  color: var(--muted);
}

.checkbox input {
  margin-top: 4px;
}

.checkbox a {
  text-decoration: underline;
}

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.section.alt {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title {
  margin-bottom: 30px;
}

.section-title p {
  color: var(--muted);
}

.tabs {
  display: inline-flex;
  background: var(--surface);
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 6px;
  gap: 6px;
}

.tab {
  border: none;
  background: transparent;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.tab.is-active {
  background: var(--accent-2);
  color: #fff;
}

.tab-panels {
  margin-top: 24px;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.panel-controls {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel-preview {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  min-height: 360px;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  font-family: inherit;
  font-size: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.form-block {
  margin-bottom: 16px;
}

.mode-toggle {
  display: inline-flex;
  background: var(--surface-2);
  border-radius: 999px;
  padding: 4px;
  border: 1px solid var(--line);
  gap: 4px;
  margin-bottom: 16px;
}

.mode-btn {
  border: none;
  background: transparent;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}

.mode-btn.is-active {
  background: var(--text);
  color: #fff;
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.button-row.secondary {
  margin-top: 12px;
}

.preview-box {
  border: 1px dashed var(--line);
  border-radius: 16px;
  padding: 18px;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}

.preview-box svg {
  max-width: 100%;
}

.batch-item {
  border: 1px solid var(--line);
  padding: 12px;
  border-radius: 14px;
  background: #fff;
  display: grid;
  gap: 8px;
  justify-items: center;
}

.batch-label {
  font-size: 12px;
  color: var(--muted);
  word-break: break-all;
  text-align: center;
}

#barcodeBatchPreview,
#qrBatchPreview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  align-items: start;
}

.history {
  margin-top: 24px;
}

.history-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.history-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--line);
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 13px;
  background: var(--surface-2);
}

.history-list button {
  border: none;
  background: var(--accent-2);
  color: #fff;
  padding: 6px 10px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 12px;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  margin-top: 12px;
}

.hidden {
  display: none !important;
}

.feature-grid,
.guide-grid,
.type-grid,
.case-grid,
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature-card,
.resource-card {
  background: var(--surface);
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: 0 12px 26px rgba(16, 24, 32, 0.08);
}

.resource-card {
  display: block;
  transition: transform 0.2s ease;
}

.resource-card:hover {
  transform: translateY(-4px);
}

.faq-list details {
  background: var(--surface);
  border-radius: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  margin-bottom: 12px;
}

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

.site-footer {
  background: #0f1720;
  color: #e2e8f0;
  padding: 40px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 26px;
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
  color: #cbd5e1;
}

.footer-grid a:hover {
  color: #fff;
}

.footer-logo strong {
  color: var(--accent-2);
}

.footer-bottom {
  border-top: 1px solid rgba(226, 232, 240, 0.2);
  margin-top: 24px;
  padding-top: 16px;
  font-size: 12px;
  color: #94a3b8;
}

@media (max-width: 900px) {
  .site-nav {
    position: fixed;
    top: 70px;
    right: 5vw;
    background: var(--surface);
    padding: 16px 20px;
    border-radius: 16px;
    flex-direction: column;
    box-shadow: var(--shadow);
    display: none;
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: 50px;
  }

  .cta-row,
  .trust-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .tabs {
    width: 100%;
    justify-content: space-between;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}