/* ===================================
   CSS Variables (Design Tokens)
   =================================== */
:root {
  /* Colors */
  --primary: #003ec7;
  --primary-container: #0052ff;
  --secondary: #515f78;
  --on-tertiary-fixed-variant: #891e00;
  --error: #e56901;
  --background: #fbf8ff;
  --on-background: #191b25;
  --surface-gray: #F8FAFC;
  --surface-container-low: #f3f2ff;
  --surface-container: #ededfb;
  --surface-container-high: #e7e7f5;
  --surface-container-highest: #e1e1ef;
  --outline: #737688;
  --vibrant-green: #10B981;
  --text-main: #0F172A;
  --text-muted: #64748B;
  --border-subtle: #E2E8F0;

  /* Spacing */
  --gutter: 24px;
  --section-padding: 80px;
  --stack-md: 16px;
  --stack-lg: 32px;
  --container-max: 1200px;

  /* Border Radius */
  --radius-lg: 0.5rem;
  --radius-full: 9999px;
}

.main_cont_table {max-width:none  !important; padding-top: 0 !important;}
.tail_wrapper {margin-top: 0 !important}

/* ===================================
   Reset & Base
   =================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

/* ===================================
   Typography Scale
   =================================== */
.text-headline-xl {
  font-size: 48px;
  line-height: 1.1;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.text-headline-lg {
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.text-headline-md {
  font-size: 20px;
  line-height: 1.5;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin-bottom: 0;
}

.text-body-lg {
  font-size: 18px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  font-weight: 400;
}

.text-body-md {
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
  font-weight: 400;
}

.text-label-md {
  font-size: 16px;
  line-height: 1.4;
  letter-spacing: 0.02em;
  font-weight: 600;
}

.text-code-sm {
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0;
  font-weight: 400;
  color: #ffffff;
}

/* ===================================
   Color Utilities
   =================================== */
.text-primary       { color: var(--primary); }
.text-secondary     { color: var(--secondary); }
.text-error         { color: var(--error); }
.text-text-muted    { color: var(--text-muted); }
.text-text-main     { color: var(--text-main); }
.text-vibrant-green { color: var(--vibrant-green); }
.text-outline       { color: var(--outline); }
.text-white         { color: #ffffff; }
.text-on-tertiary-fixed-variant { color: var(--on-tertiary-fixed-variant); }

.bg-white           { background-color: #ffffff; }
.bg-primary         { background-color: var(--primary); }
.bg-surface-gray    { background-color: var(--surface-gray); }
.bg-surface-container     { background-color: var(--surface-container); }
.bg-surface-container-low { background-color: var(--surface-container-low); }
.bg-surface-container-high { background-color: var(--surface-container-high); }
.bg-surface-container-highest { background-color: var(--surface-container-highest); }
.bg-on-background   { background-color: var(--on-background); }

/* ===================================
   Material Symbols
   =================================== */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}
.fill-icon {
  font-variation-settings: 'FILL' 1;
}

/* ===================================
   Custom Components
   =================================== */
.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.flow-connector {
  background: linear-gradient(90deg, #003ec7 0%, #10B981 100%);
  height: 2px;
  flex-grow: 1;
  position: relative;
  max-width: 80px;
}

.ambient-shadow {
  box-shadow: 0px 4px 20px rgba(15, 23, 42, 0.05);
}

.hero-gradient {
  background: radial-gradient(circle at top right, #dfe3ff 0%, #ffffff 50%);
}

/* ===================================
   Layout
   =================================== */
main {
  padding-top: 64px; /* pt-16 */
}

.containermd {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
}

/* ===================================
   Hero Section
   =================================== */
.hero-section {
  position: relative;
  padding: var(--section-padding) var(--gutter);
  overflow: hidden;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: var(--stack-md);
  border-radius: var(--radius-full);
  background-color: rgba(0, 62, 199, 0.1);
  border: 1px solid rgba(0, 62, 199, 0.2);
}

.hero-title {
  margin-bottom: var(--stack-md);
  line-height: 1.15;
}

.hero-description {
  max-width: 672px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--stack-lg);
}

/* Flow Diagram */
.flow-diagram {
  margin-top: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.flow-step-icon-box {
  width: 80px;
  height: 96px;
  background-color: #ffffff;
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.flow-step-icon-box.primary-box {
  width: 96px;
  height: 96px;
  background-color: var(--primary);
  color: #ffffff;
  border-radius: 16px;
  border: none;
  position: relative;
  overflow: hidden;
}

.flow-step-icon-box.md-box {
  border: 2px solid var(--primary);
}

.flow-step-icon-box .icon-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-top: 8px;
}

.flow-step.scale-up { transform: scale(1.1); }

.flow-step-label { font-size: 14px; font-weight: 600; letter-spacing: 0.02em; }

.flow-connector-vertical {
  padding: 16px 0;
}

.flow-connector-vertical .material-symbols-outlined {
  display: block;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.ai-grid-item {
  padding: 12px;
  background-color: var(--surface-container-low);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}


/* ===================================
   Feature Grid Section
   =================================== */
.features-section {
  padding: var(--section-padding) var(--gutter);
  background-color: #ffffff;
}
 
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
 
.section-header p {
  margin-top: 16px;
}
 
.features-grid {
  display: grid;
  gap: var(--stack-lg);
  align-items: center;
}
 
.feature-cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
 
.feature-card {
  padding: 24px;
  border-radius: 16px;
  background-color: var(--surface-gray);
  border: 1px solid var(--border-subtle);
  transition: border-color 0.2s;
}
 
.feature-card:hover { border-color: var(--primary); }
 
.feature-card h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
 
.feature-table-wrap {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}
 
.feature-table {
  width: 100%;
  text-align: left;
  border-collapse: collapse;
}
 
.feature-table thead {
  background-color: var(--surface-container-highest);
}
 
.feature-table th {
  padding: 16px 24px;
}
 
.feature-table tbody tr {
  border-top: 1px solid var(--border-subtle);
}
 
.feature-table td {
  padding: 16px 24px;
}


/* ===================================
   Features Korean Section (#features)
   =================================== */
.features-korean-section {
  padding: var(--section-padding) var(--gutter);
  background-color: #ffffff;
  transition: opacity 0.7s ease, transform 0.7s ease;
}
 
.features-korean-desc {
  max-width: 960px;
  margin: 16px auto 0;
}
 
/* Error Cards Grid */
.error-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
 
.error-card-item {
  padding: 24px;
  border-radius: 16px;
  background-color: var(--surface-container-low);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}
 
.error-card-item > .material-symbols-outlined:first-child {
  font-size: 36px;
  margin-bottom: 8px;
}
 
.error-card-item > .material-symbols-outlined:not(:first-child) {
  margin: 4px 0;
}
 
.error-card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  padding: 0;
}
 
.error-card-before {
  font-size: 14px;
  color: var(--text-muted);
}
 
.error-card-after {
  font-size: 14px;
  font-weight: 700;
  color: var(--error);
}
 
/* Summary + CTA */
.features-korean-summary {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
 
.features-korean-cta-box {
  padding: 24px;
  border-radius: 16px;
  background-color: rgba(0, 62, 199, 0.05);
  border: 1px solid rgba(0, 62, 199, 0.2);
  display: inline-block;
}
 
/* Responsive */
@media (min-width: 768px) {
  .error-cards-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===================================
   Problem Section
   =================================== */
.problem-section {
  padding: var(--section-padding) var(--gutter);
  background-color: var(--surface-gray);
}

.problem-grid {
  display: grid;
  gap: 48px;
}

.problem-col, .solution-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.problem-col-header, .solution-col-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.error-card, .success-card {
  background-color: #ffffff;
  padding: 24px;
  border-radius: 12px;
  border-left: 0px solid;
}

.error-card   { border-left-color: var(--error); }
.success-card { border-left-color: var(--vibrant-green); }

.error-card p.card-label   { font-size: 18px; font-weight: 600; letter-spacing: 0.02em; color: var(--error); margin-bottom: 8px; }
.success-card p.card-label { font-size: 18px; font-weight: 600; letter-spacing: 0.02em; color: var(--vibrant-green); margin-bottom: 8px; }

.code-block {
  
  font-size: 14px;
  background-color: var(--surface-container-low);
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
}

.card-footnote {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ===================================
   Process Section
   =================================== */
.process-section {
  padding: var(--section-padding) var(--gutter);
  background-color: #ffffff;
  position: relative;
}

.process-grid {
  display: grid;
  gap: 64px;
  align-items: center;
  text-align: left;
}

.process-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.process-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.process-list .subtit2 {font-size: 20px; font-weight: 700;}

.engine-card {
  position: relative;
}

.engine-inner {
  border-radius: 24px;
  padding: 32px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
  aspect-ratio: 1;
}

.engine-status-box {
  background-color: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 24px;
}

.engine-status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.engine-status-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
}

.engine-status-dots {
  display: flex;
  gap: 4px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.dot-green  { background-color: var(--vibrant-green); animation: pulse 1.5s infinite; }
.dot-primary { background-color: var(--primary); animation: pulse 1.5s 0.075s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.engine-bars {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.engine-bar {
  height: 8px;
  border-radius: 4px;
  background-color: var(--surface-container);
}
.bar-w-3-4 { width: 75%; }
.bar-w-1-2 { width: 50%; }
.bar-w-full{ width: 100%; }

.engine-output-box {
  background-color: var(--primary);
  color: #ffffff;
  border-radius: 12px;
  padding: 24px;
}

/* ===================================
   Comparison Table Section
   =================================== */
.comparison-section {
  padding: var(--section-padding) var(--gutter);
  background-color: var(--surface-gray);
}

.comparison-table-wrap {
  overflow-x: auto;
  border-radius: 16px;
}

.comparison-table {
  width: 100%;
  min-width: 800px;
  text-align: center;
  border-collapse: collapse;
  font-size: 15px;
}

.comparison-table thead tr {
  background-color: var(--surface-container-high);
}

.comparison-table th {
  padding: 24px;
}

.comparison-table th:first-child { text-align: left; }

.comparison-table th.col-nexbook {
  background-color: var(--primary);
  color: #ffffff;
  border-radius: 16px 16px 0 0;
}

.comparison-table tbody tr {
  border-top: 1px solid var(--border-subtle);
  background-color: #ffffff;
}

.comparison-table td {
  padding: 20px 24px;
}

.comparison-table td:first-child { text-align: left; }

.comparison-table td.col-nexbook-cell {
  background-color: rgba(0, 62, 199, 0.05);
}

.comparison-table td.col-nexbook-cell.highlight {
  font-weight: 700;
  color: var(--primary);
}

.comparison-table tr.summary-row {
  background-color: rgba(0, 62, 199, 0.1);
}

.comparison-table tr.summary-row td:last-child {
  font-weight: 700;
  font-size: 24px;
  color: var(--primary);
}

.comparison-footnote {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-muted);
  text-align: right;
}

/* ===================================
   Use Cases (Bento) Section
   =================================== */
.usecases-section {
  padding: var(--section-padding) var(--gutter);
  background-color: #ffffff;
}

.bento-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.bento-card {
  padding: 32px;
  border-radius: 24px;
  position: relative;
  overflow: hidden;
}

.bento-card h3 { margin-bottom: 16px; }
.bento-card p  { color: var(--text-muted); }

.bento-card-1 { background-color: var(--surface-container); }
.bento-card-2 { background-color: var(--surface-container-high); }
.bento-card-3 {
  background-color: rgba(0, 62, 199, 0.05);
  border: 1px solid rgba(0, 62, 199, 0.2);
}

.bento-card-1 .bento-icon {
  font-size: 64px;
  color: rgba(0, 62, 199, 0.2);
  position: absolute;
  bottom: 0;
  right: 0;
}

.bento-card-2 .bento-icon {
  color: var(--primary);
  display: block;
  margin-top: 32px;
}

.bento-tags {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.bento-tag {
  padding: 8px 16px;
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}


/* ===================================
   Use Cases Grid
   =================================== */
.usecases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}


.usecase-card {
  padding: 32px;
  border-radius: 24px;
}
 
.usecase-card h3 {
  margin-bottom: 16px;
}
.usecase-card p { font-size: 15px; margin-bottom: 0;}


 
/* Variants */
.usecase-card--container      { background-color: var(--surface-container); }
.usecase-card--container-high { background-color: var(--surface-container-high); }
.usecase-card--primary {
  background-color: rgba(0, 62, 199, 0.05);
  border: 1px solid rgba(0, 62, 199, 0.2);
}
 
.usecase-card--container2 {background-color: #f2f2f2;} 
/* First card: relative layout with large background icon */
.usecase-card--container:first-child {
  position: relative;
  overflow: hidden;
}
 
.usecase-card__inner {
  position: relative;
  z-index: 1;
}
 
.usecase-card__bg-icon {
  font-size: 64px;
  color: rgba(0, 62, 199, 0.2);
  position: absolute;
  bottom: 0;
  right: 0;
}
 
/* Regular bottom icon */
.usecase-card__icon {
  display: block;
  margin-top: 32px;
}
 
@media (min-width: 768px) {
  .usecases-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
 

/* ===================================
   CTA Section
   =================================== */
.cta-section {
  padding: var(--section-padding) var(--gutter);
  background-color: var(--on-background);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.cta-inner {
  text-align: center;
  position: relative;
  z-index: 10;
}

.cta-description {
  opacity: 0.8;
  margin-bottom: var(--stack-lg);
  max-width: 672px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.btn-primary-cta {
  background-color: #755abb;
  color: #ffffff;
  border: none;
  padding: 15px 40px;
  border-radius: 12px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  cursor: pointer;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  transition: transform 0.2s;
}
.btn-primary-cta a { color: #ffffff;}
.btn-primary-cta:hover  { transform: scale(1.05); }
.btn-primary-cta:active { transform: scale(0.95); }

.btn-secondary-cta {
  background-color: rgba(255,255,255,0.1);
  backdrop-filter: blur(12px);
  color: #ffffff;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 20px 40px;
  border-radius: 16px;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-secondary-cta:hover { background-color: rgba(255,255,255,0.2); }

/* ===================================
   Scroll Reveal Animation
   =================================== */
section {
  transition: opacity 0.7s ease, transform 0.7s ease;
}

section.hidden-section {
  opacity: 0;
  transform: translateY(40px);
}

section.visible-section {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================
   Responsive - Tablet & Desktop
   =================================== */
@media (min-width: 768px) {
  .flow-diagram {
    flex-direction: row;
    gap: 16px;
  }

  .flow-connector-vertical { display: none; }

  .features-grid      { grid-template-columns: 1fr 1fr; }
  .problem-grid       { grid-template-columns: 1fr 1fr; }
  .process-grid       { grid-template-columns: 1fr 1fr; }
  .bento-grid         { grid-template-columns: repeat(3, 1fr); }
  .cta-buttons        { flex-direction: row; justify-content: center; }
}


/* ===================================
   Features Icon Grid
   =================================== */
.features-icon-grid { max-width: 900px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
 
.features-icon-card {
  padding: 24px;
  border-radius: 16px;
  background-color: var(--surface-container-low);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}
.features-icon-card span{ opacity: 0.5;}

.features-icon-card .material-symbols-outlined {
  font-size: 36px;
}
 
.features-icon-card__label {
  font-weight: 700;
  font-size: 18px;
}
 
@media (min-width: 768px) {
  .features-icon-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}