/* ==========================================================================
   HNSolution simulation.co.kr - 3DS Inspired Enterprise Design System
   Color Palette, Typography, and Components modeled after Dassault Systèmes
   ========================================================================== */

@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard-dynamic-subset.css");
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Montserrat:wght@500;600;700;800&display=swap");

:root {
  /* Dassault Systèmes 3DS Color Tokens */
  --color-primary-navy: #002244;
  --color-primary-dark: #00182c;
  --color-primary-blue: #005686;
  --color-accent-blue: #0073e6;
  --color-accent-cyan: #00a4e4;
  --color-accent-hover: #004b77;
  --color-orange-accent: #ff7a00; /* Original HNSolution brand accent */
  
  /* Neutral Grayscale */
  --color-bg-white: #ffffff;
  --color-bg-light: #f8fafc;
  --color-bg-card: #ffffff;
  --color-bg-subtle: #f1f5f9;
  --color-bg-dark: #0a1420;
  --color-bg-footer: #060e17;
  
  --color-text-main: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-text-white: #ffffff;
  
  --color-border: #e2e8f0;
  --color-border-subtle: #edf2f7;
  --color-border-dark: rgba(255, 255, 255, 0.1);
  --color-border-active: #005686;
  
  /* Elevations & Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(0, 34, 68, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 35px -5px rgba(0, 34, 68, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

  /* Typography */
  --font-sans: "Pretendard", -apple-system, BlinkMacSystemFont, "Inter", system-ui, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --font-display: "Montserrat", "Pretendard", sans-serif;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Layout */
  --container-max: 1240px;
  --header-height: 76px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
}

/* ==========================================================================
   CSS Reset & Base
   ========================================================================== */

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

html {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  background: transparent;
}

/* ==========================================================================
   Layout Containers & Utilities
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section-dark {
  background-color: var(--color-primary-navy);
  color: var(--color-text-white);
}

.section-subtle {
  background-color: var(--color-bg-light);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  margin-bottom: 48px;
}

.section-header.text-center {
  text-align: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--color-primary-blue);
  margin-bottom: 12px;
}

.diagnosis-kicker-box,
.section-kicker.box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 22px;
  background-color: #f0f7ff;
  border: 1px solid #b9d7ea;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--color-primary-blue);
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0, 34, 68, 0.05);
}

.section-dark .section-kicker {
  color: var(--color-accent-cyan);
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-primary-navy);
  margin-bottom: 16px;
}

.section-dark .section-title {
  color: var(--color-text-white);
}

.section-subtitle {
  font-size: 15.5px;
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 1200px;
  word-break: keep-all;
}

.text-nowrap-desktop {
  display: inline-block;
}

@media (min-width: 1100px) {
  .text-nowrap-desktop {
    white-space: nowrap;
  }
}

.section-dark .section-subtitle {
  color: #cbd5e1;
}

.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
  max-width: 860px;
}

/* ==========================================================================
   Header & Navigation (3DS Style)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  height: 68px;
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(0, 34, 68, 0.08);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  height: 52px;
  width: auto;
  object-fit: contain;
  transition: height var(--transition-normal);
}

.site-header.scrolled .brand-logo {
  height: 44px;
}

.brand-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-subtle);
  color: var(--color-primary-blue);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: 1px solid var(--color-border);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 100%;
  flex-shrink: 0;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-main);
  padding: 0 4px;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-primary-blue);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.nav-link:hover {
  color: var(--color-primary-blue);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link.active {
  color: var(--color-primary-blue);
  font-weight: 700;
}

.nav-badge {
  font-size: 10px;
  font-weight: 700;
  background-color: var(--color-orange-accent);
  color: #fff;
  padding: 1px 5px;
  border-radius: var(--radius-full);
  margin-left: 4px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 13.5px;
  font-weight: 700;
  color: #fff;
  background-color: var(--color-primary-blue);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  box-shadow: 0 2px 6px rgba(0, 86, 134, 0.2);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-header-cta:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(0, 86, 134, 0.35);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary-navy);
  transition: var(--transition-normal);
}

/* ==========================================================================
   Buttons & Interactive Elements
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  line-height: 1;
}

.btn-primary {
  background-color: var(--color-primary-blue);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 86, 134, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 6px 20px rgba(0, 86, 134, 0.35);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-primary-navy);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--color-primary-blue);
  color: var(--color-primary-blue);
  background-color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--color-orange-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 122, 0, 0.3);
}

.btn-accent:hover {
  background-color: #e66e00;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 122, 0, 0.4);
}

.btn-ghost-dark {
  background-color: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  backdrop-filter: blur(8px);
}

.btn-ghost-dark:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

.btn-blue-hero {
  background-color: #0073e6;
  color: #ffffff;
  border: 1px solid #0073e6;
  border-radius: 8px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(0, 115, 230, 0.3);
}

.btn-blue-hero:hover {
  background-color: #005bb5;
  border-color: #005bb5;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 115, 230, 0.4);
}

/* ==========================================================================
   Hero Section (3DS Bold Aesthetic)
   ========================================================================== */

.hero-section {
  position: relative;
  background-color: #ffffff;
  color: var(--color-text-main);
  padding: 90px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

/* Background Video Layer */
.hero-video-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.hero-bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.74; /* 투명도를 낮추어 동영상이 훨씬 선명하게 보이도록 설정 */
  filter: contrast(1.08) brightness(1.02);
  transition: opacity 0.5s ease;
}

/* Light Dynamic Gradient Overlay - 텍스트 영역 완벽 가독성 보장 & 우측 영상 선명 노출 */
.hero-video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(90deg, 
      rgba(255, 255, 255, 0.95) 0%, 
      rgba(255, 255, 255, 0.90) 35%, 
      rgba(255, 255, 255, 0.55) 68%, 
      rgba(255, 255, 255, 0.20) 100%),
    linear-gradient(180deg, 
      rgba(255, 255, 255, 0.4) 0%, 
      transparent 25%, 
      transparent 75%, 
      rgba(255, 255, 255, 0.95) 100%);
  pointer-events: none;
}

/* 격자 무늬 완전 제거 */
.hero-section::before {
  display: none !important;
}

/* 은은한 테크 블루 글로우 (화이트 배경 최적화) */
.hero-glow {
  position: absolute;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(0, 115, 230, 0.10) 0%, rgba(255, 255, 255, 0) 70%);
  top: 5%;
  right: -50px;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 1060px;
}

/* Video Play/Pause Control Button - 라이트 테마 글래스모피즘 */
.hero-video-control {
  position: absolute;
  bottom: 24px;
  right: 28px;
  z-index: 15;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 34, 68, 0.16);
  color: #002244;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(0, 34, 68, 0.08);
}

.hero-video-control:hover {
  background: #ffffff;
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  transform: scale(1.08);
  box-shadow: 0 6px 18px rgba(0, 115, 230, 0.18);
}

.hero-video-control:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .hero-video-control {
    bottom: 16px;
    right: 16px;
    width: 34px;
    height: 34px;
  }

  .hero-video-overlay {
    background: linear-gradient(180deg, 
      rgba(255, 255, 255, 0.94) 0%, 
      rgba(255, 255, 255, 0.88) 60%, 
      rgba(255, 255, 255, 0.65) 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-bg-video {
    display: none;
  }
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  background-color: rgba(0, 86, 134, 0.08);
  border: 1px solid rgba(0, 86, 134, 0.22);
  font-size: 13.5px;
  font-weight: 700;
  color: #005686;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: 22px;
  color: #001f3f;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.7);
}

.hero-title span.highlight {
  color: #0073e6;
  position: relative;
}

.hero-desc {
  font-size: 16.5px;
  line-height: 1.75;
  color: #334155;
  margin-bottom: 36px;
  max-width: 1020px;
  word-break: keep-all;
  font-weight: 500;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.7);
}

.hero-section .btn-ghost-dark {
  background-color: rgba(255, 255, 255, 0.9);
  color: #002244;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0, 34, 68, 0.06);
}

.hero-section .btn-ghost-dark:hover {
  background-color: #ffffff;
  border-color: #005686;
  color: #005686;
  box-shadow: 0 4px 14px rgba(0, 86, 134, 0.14);
}

@media (min-width: 768px) {
  .hero-desc-line {
    white-space: nowrap;
    display: inline-block;
  }
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 0;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.metric-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.metric-val {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 4px;
  font-family: var(--font-display);
}

.metric-val.accent {
  color: var(--color-accent-cyan);
}

.metric-label {
  font-size: 12.5px;
  color: #94a3b8;
  line-height: 1.4;
}

/* ==========================================================================
   3DS Style Feature Cards (3대 핵심 엔지니어링 서비스)
   ========================================================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  position: relative;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  transition: background var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: #cbd5e1;
  box-shadow: var(--shadow-xl);
}

.service-card:hover::before {
  background: var(--color-primary-blue);
}

.service-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  width: 100%;
}

.service-label {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--color-primary-navy);
  letter-spacing: 0.5px;
  font-family: var(--font-display);
}

.service-label.highlight-blue {
  color: var(--color-primary-blue);
}

.service-pill {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary-blue);
  background-color: #f0f7ff;
  border: 1px solid #d0e3f7;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.2px;
}

.service-pill.pill-blue {
  background-color: #e0f2fe;
  border-color: #bae6fd;
  color: #0284c7;
}

.service-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-navy);
  line-height: 1.35;
  margin-bottom: 4px;
}

.service-en-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 22px;
  font-family: var(--font-display);
}

.service-features {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 20px;
}

.service-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-main);
  line-height: 1.45;
}

.service-features li::before {
  content: "✓";
  color: var(--color-primary-blue);
  font-weight: 800;
  font-size: 13px;
  flex-shrink: 0;
}

/* ==========================================================================
   Technology & Software Competence Cards (2-Column)
   ========================================================================== */

.competence-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.competence-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.competence-card:hover {
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.competence-target {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-blue);
  background-color: rgba(0, 86, 134, 0.08);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
  margin-bottom: 14px;
}

.competence-title {
  font-size: 21px;
  font-weight: 800;
  color: var(--color-primary-navy);
  margin-bottom: 4px;
}

.competence-en {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  font-family: var(--font-display);
}

.competence-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.competence-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  color: var(--color-text-main);
  line-height: 1.5;
}

.competence-list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 6px;
  height: 6px;
  background-color: var(--color-primary-blue);
  border-radius: 50%;
}

/* ==========================================================================
   Methodology Process (4 Steps)
   ========================================================================== */

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.process-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 22px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.process-card:hover {
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.process-step-num {
  font-size: 32px;
  font-weight: 800;
  font-family: var(--font-display);
  color: var(--color-primary-blue);
  line-height: 1;
  margin-bottom: 12px;
}

.process-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin-bottom: 2px;
}

.process-en {
  font-size: 12px;
  color: var(--color-text-light);
  margin-bottom: 18px;
  font-family: var(--font-display);
}

.process-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.process-items li {
  position: relative;
  padding-left: 14px;
}

.process-items li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary-blue);
  font-size: 16px;
  line-height: 1;
}

/* ==========================================================================
   Accordion / FAQ Component
   ========================================================================== */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.open {
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-sm);
}

.faq-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  text-align: left;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--color-primary-navy);
  transition: color var(--transition-fast);
  background-color: #ffffff;
}

.faq-header:hover {
  color: var(--color-primary-blue);
}

.faq-q-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: rgba(0, 86, 134, 0.1);
  color: var(--color-primary-blue);
  font-size: 13px;
  font-weight: 800;
  margin-right: 12px;
  flex-shrink: 0;
}

.faq-toggle-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  transition: transform var(--transition-normal);
  font-size: 20px;
  line-height: 1;
}

.faq-item.open .faq-toggle-icon {
  transform: rotate(45deg);
  color: var(--color-primary-blue);
}

.faq-body {
  display: none;
  padding: 0 24px 22px 60px;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.7;
  border-top: 1px dashed var(--color-border-subtle);
  background-color: #fafbfc;
}

.faq-item.open .faq-body {
  display: block;
}

/* ==========================================================================
   Diagnosis & Contact Application Section / Forms
   ========================================================================== */

/* Diagnosis Header Banner Box (Prominent Dark Box) */
.diagnosis-banner-box {
  width: 100%;
  background-color: #0f172a;
  padding: 40px 30px;
  text-align: center;
  border-radius: 12px;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.25);
  margin-bottom: 48px;
  box-sizing: border-box;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.diagnosis-banner-title {
  color: #ffffff;
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 14px 0;
  letter-spacing: -0.5px;
  line-height: 1.4;
  word-break: keep-all;
}

.bullet-lime {
  color: #84cc16;
  margin-right: 6px;
  font-size: 18px;
  display: inline-block;
}

.diagnosis-banner-subbox {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(132, 204, 22, 0.4);
  border-radius: 6px;
  padding: 10px 24px;
  margin-top: 6px;
}

.diagnosis-banner-desc {
  color: #a3e635;
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  word-break: keep-all;
  line-height: 1.5;
}

.diagnosis-banner-desc .highlight-underline {
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 768px) {
  .diagnosis-banner-box {
    padding: 28px 18px;
    margin-bottom: 32px;
  }
  .diagnosis-banner-title {
    font-size: 18px;
  }
  .diagnosis-banner-subbox {
    padding: 8px 16px;
  }
  .diagnosis-banner-desc {
    font-size: 13.5px;
  }
}

.inquiry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: flex-start;
}

.inquiry-info-pane {
  display: flex;
  flex-direction: column;
}

/* Fast & Secure Feedback Header */
.feedback-header {
  margin-bottom: 22px;
}

.feedback-badge {
  display: inline-block;
  background-color: #E0F2FE;
  color: #0369A1;
  font-size: 13px;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.feedback-desc {
  color: #475569;
  font-size: 15.5px;
  margin: 0;
  line-height: 1.6;
  word-break: keep-all;
}

/* Benefit Cards List (simulation.co.kr style with left border accents) */
.inquiry-cards-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.inquiry-card-benefit {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-left: 4px solid #0F172A;
  border-radius: 8px;
  padding: 18px 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: all var(--transition-fast);
}

.inquiry-card-benefit.accent-blue {
  border-left-color: #0284C7;
}

.inquiry-card-benefit:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.inquiry-card-benefit h4 {
  color: #0F172A;
  font-size: 15.5px;
  font-weight: 700;
  margin: 0 0 6px 0;
  line-height: 1.4;
}

.inquiry-card-benefit p {
  color: #64748B;
  font-size: 13.5px;
  margin: 0;
  line-height: 1.55;
  word-break: keep-all;
}

/* Direct Contact Bar */
.inquiry-direct-box {
  background-color: #0F172A;
  color: #FFFFFF;
  border-radius: 8px;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.inquiry-direct-box .direct-label {
  color: #94A3B8;
  font-size: 12px;
  font-weight: 600;
  display: block;
}

.inquiry-direct-box .direct-team {
  color: #38BDF8;
  font-size: 15px;
  font-weight: 700;
}

.inquiry-direct-box .direct-tel {
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.inquiry-direct-box .direct-tel:hover {
  background-color: #0284C7;
  border-color: #0284C7;
  color: #FFFFFF;
}

.form-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
}

.form-header {
  margin-bottom: 24px;
}

.form-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary-navy);
  margin-bottom: 6px;
}

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

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-primary-navy);
  margin-bottom: 8px;
}

.form-label .req {
  color: #e11d48;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--color-text-main);
  font-size: 14.5px;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--color-primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 86, 134, 0.12);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-file-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  background-color: #f8fafc;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-sizing: border-box;
}

.form-file-wrap:hover {
  border-color: var(--color-primary-blue);
  background-color: #f0f7ff;
}

.form-file-icon {
  font-size: 32px;
  margin-bottom: 8px;
  line-height: 1;
}

.form-file-title {
  font-weight: 700;
  font-size: 15.5px;
  color: var(--color-primary-navy);
  margin-bottom: 6px;
}

.form-file-hint {
  font-size: 12.5px;
  color: var(--color-text-light);
  line-height: 1.4;
  word-break: keep-all;
}

.form-file-name {
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-blue);
  background-color: #e0f2fe;
  padding: 5px 14px;
  border-radius: 4px;
  border: 1px solid #bae6fd;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0;
  font-size: 13.5px;
  color: var(--color-text-muted);
}

.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary-blue);
  margin-top: 2px;
  cursor: pointer;
}

.form-checkbox a {
  color: var(--color-primary-blue);
  text-decoration: underline;
}

/* ==========================================================================
   Solutions & Capabilities Specific Styles (solutions.html)
   ========================================================================== */

.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-navy) 60%, #0b3c66 100%);
  color: #ffffff;
  padding: 70px 0 80px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-hero-title {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.25;
}

.page-hero-subtitle {
  font-size: 17px;
  color: #cbd5e1;
  max-width: 780px;
  line-height: 1.6;
}

/* Solutions 3 Pillars (Core Solutions) */
.core-solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.core-sol-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.core-sol-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-xl);
}

.core-sol-num {
  font-size: 13px;
  font-weight: 800;
  color: var(--color-primary-blue);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.core-sol-badge {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent-hover);
  margin-bottom: 8px;
}

.core-sol-title {
  font-size: 21px;
  font-weight: 800;
  color: var(--color-primary-navy);
  line-height: 1.35;
  margin-bottom: 4px;
}

.core-sol-en {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-family: var(--font-display);
}

.core-sol-desc {
  font-size: 14.5px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.core-sol-bullets {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-main);
}

.core-sol-bullets li {
  position: relative;
  padding-left: 18px;
}

.core-sol-bullets li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-primary-blue);
  font-weight: 700;
}

/* 4 Engineering Steps */
.eng-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.eng-step-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 22px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.eng-step-card:hover {
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.eng-step-badge {
  font-size: 12px;
  font-weight: 800;
  font-family: var(--font-display);
  color: #ffffff;
  background-color: var(--color-primary-blue);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
  margin-bottom: 12px;
}

.eng-step-tag {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.eng-step-title {
  font-size: 17.5px;
  font-weight: 800;
  color: var(--color-primary-navy);
  margin-bottom: 2px;
}

.eng-step-en {
  font-size: 12px;
  color: var(--color-text-light);
  margin-bottom: 14px;
  font-family: var(--font-display);
}

.eng-step-desc {
  font-size: 13.5px;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 16px;
}

.eng-step-deliverable {
  margin-top: auto;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-primary-blue);
  background-color: var(--color-bg-subtle);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary-blue);
}

/* Tech Stack Table */
.tech-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background-color: #ffffff;
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.tech-table th {
  background-color: var(--color-bg-subtle);
  color: var(--color-primary-navy);
  font-size: 14px;
  font-weight: 700;
  padding: 16px 20px;
  border-bottom: 2px solid var(--color-border);
}

.tech-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: 14.5px;
  color: var(--color-text-main);
  vertical-align: middle;
}

.tech-table tr:hover td {
  background-color: #fafbfc;
}

.tech-table .col-category {
  font-weight: 700;
  color: var(--color-primary-blue);
  width: 22%;
}

.tech-table .col-tool {
  font-weight: 700;
  color: var(--color-primary-navy);
  width: 32%;
}

.tech-table .col-desc {
  color: var(--color-text-muted);
}

/* Differentiators (Why Us) */
.why-us-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.why-us-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.why-us-card:hover {
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.why-us-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(0, 86, 134, 0.1);
  color: var(--color-primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 16px;
  font-weight: 800;
}

.why-us-title {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin-bottom: 10px;
  line-height: 1.35;
}

.why-us-desc {
  font-size: 13.5px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Industry References (Tabbed 3DS Style) */
.ref-tabs-header {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 30px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.ref-tab-btn {
  padding: 12px 20px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  position: relative;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.ref-tab-btn:hover {
  color: var(--color-primary-blue);
}

.ref-tab-btn.active {
  color: var(--color-primary-blue);
  font-weight: 700;
  border-bottom: 3px solid var(--color-primary-blue);
}

.ref-tab-pane {
  display: none;
}

.ref-tab-pane.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.ref-content-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 34px;
  box-shadow: var(--shadow-sm);
}

.ref-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-subtle);
  flex-wrap: wrap;
  gap: 14px;
}

.ref-group-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary-navy);
}

.ref-group-metric {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  background-color: var(--color-primary-blue);
  padding: 6px 14px;
  border-radius: var(--radius-full);
}

.ref-items-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.ref-item-box {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.ref-corp-tag {
  font-size: 13px;
  font-weight: 800;
  color: var(--color-primary-blue);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.ref-case-desc {
  font-size: 13.5px;
  color: var(--color-text-main);
  line-height: 1.5;
}

/* ==========================================================================
   Tech Library Styles (tech_library.html & article.html)
   ========================================================================== */

.library-filter-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 20px;
}

.category-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.category-pill {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-card);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.category-pill:hover {
  border-color: var(--color-primary-blue);
  color: var(--color-primary-blue);
}

.category-pill.active {
  background-color: var(--color-primary-blue);
  color: #ffffff;
  border-color: var(--color-primary-blue);
}

.search-box-wrap {
  position: relative;
  min-width: 280px;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: #ffffff;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--color-primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 86, 134, 0.1);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  font-size: 15px;
  pointer-events: none;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.article-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: #cbd5e1;
  box-shadow: var(--shadow-xl);
}

.article-thumb-wrap {
  position: relative;
  width: 100%;
  height: 200px;
  background-color: #0f172a;
  overflow: hidden;
}

.article-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-thumb {
  transform: scale(1.05);
}

.article-cat-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 11.5px;
  font-weight: 700;
  color: #ffffff;
  background-color: rgba(0, 34, 68, 0.85);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
  z-index: 2;
}

.article-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.article-card-title {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--color-primary-navy);
  line-height: 1.4;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-excerpt {
  font-size: 13.5px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-cta {
  margin-top: auto;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-primary-blue);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition-fast);
}

.article-card:hover .article-card-cta {
  gap: 10px;
}

/* ==========================================================================
   Article Detail Page (article.html)
   ========================================================================== */

.article-detail-wrap {
  padding: 50px 0 80px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.breadcrumb-nav a:hover {
  color: var(--color-primary-blue);
}

.breadcrumb-sep {
  color: var(--color-text-light);
}

.article-header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.article-detail-cat {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-blue);
  background-color: var(--color-bg-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.article-detail-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--color-primary-navy);
  line-height: 1.35;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.article-detail-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

.article-author-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-author-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.article-banner-img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 40px;
  box-shadow: var(--shadow-md);
}

.article-content-body {
  font-size: 16.5px;
  line-height: 1.85;
  color: #334155;
}

.article-content-body p {
  margin-bottom: 20px;
}

.article-content-body strong {
  color: var(--color-primary-navy);
}

.article-content-body h2, 
.article-content-body h3, 
.article-content-body h4 {
  color: var(--color-primary-navy);
  font-weight: 800;
  margin: 36px 0 16px;
  line-height: 1.35;
}

.article-content-body h2 {
  font-size: 24px;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 10px;
}

.article-content-body h3 {
  font-size: 20px;
}

.article-content-body ul, 
.article-content-body ol {
  margin: 16px 0 24px 20px;
}

.article-content-body li {
  margin-bottom: 8px;
}

.article-content-body img {
  border-radius: var(--radius-md);
  margin: 28px auto;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.tech-post-footer {
  margin-top: 48px;
  padding: 18px 24px;
  background-color: var(--color-primary-navy);
  border-radius: var(--radius-md);
  color: #94a3b8;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   Article In-Content CTA Banner (#hns-footer-cta)
   High-tech, premium dark card matching Dassault Systèmes / HNSolution theme
   ========================================================================== */
#hns-footer-cta {
  margin-top: 56px !important;
  margin-bottom: 28px !important;
  background: linear-gradient(135deg, #00182c 0%, #002544 55%, #003866 100%) !important;
  border: 1px solid rgba(0, 164, 228, 0.35) !important;
  border-radius: 16px !important;
  box-shadow: 0 16px 36px -8px rgba(0, 24, 44, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.12) !important;
  position: relative !important;
  overflow: hidden !important;
  color: #ffffff !important;
  text-align: left !important;
}

#hns-footer-cta::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(0, 164, 228, 0.25) 0%, rgba(0, 115, 230, 0.08) 50%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
}

#hns-footer-cta::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #00a4e4, #0073e6, #ff7a00);
  opacity: 0.9;
  z-index: 2;
}

#hns-footer-cta .cta-container {
  position: relative;
  z-index: 2;
  padding: 34px 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

#hns-footer-cta .cta-text-group {
  flex: 1 1 auto;
}

#hns-footer-cta .cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px !important;
  font-weight: 700 !important;
  color: #38bdf8 !important;
  background: rgba(0, 164, 228, 0.15) !important;
  border: 1px solid rgba(56, 189, 248, 0.4) !important;
  padding: 5px 13px !important;
  border-radius: 999px !important;
  letter-spacing: 0.02em;
  margin-bottom: 12px !important;
  box-shadow: 0 0 14px rgba(0, 164, 228, 0.18);
}

#hns-footer-cta .cta-badge::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 8px #38bdf8;
}

#hns-footer-cta .cta-title {
  font-size: 21px !important;
  font-weight: 800 !important;
  line-height: 1.4 !important;
  color: #ffffff !important;
  margin: 0 0 10px 0 !important;
  border-bottom: none !important;
  padding-bottom: 0 !important;
  letter-spacing: -0.015em !important;
}

#hns-footer-cta .cta-title .highlight {
  color: #38bdf8 !important;
  background: linear-gradient(90deg, #38bdf8, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

#hns-footer-cta .cta-desc {
  font-size: 14.5px !important;
  line-height: 1.65 !important;
  color: #cbd5e1 !important;
  margin: 0 !important;
}

#hns-footer-cta .cta-desc strong {
  color: #ffffff !important;
  font-weight: 700 !important;
}

#hns-footer-cta .cta-button-group {
  flex-shrink: 0;
}

#hns-footer-cta .poc-submit-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  padding: 13px 24px !important;
  font-size: 14.5px !important;
  font-weight: 700 !important;
  color: #ffffff !important;
  background: linear-gradient(135deg, #0073e6 0%, #005686 100%) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  border-radius: 10px !important;
  text-decoration: none !important;
  box-shadow: 0 4px 14px rgba(0, 115, 230, 0.45) !important;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  white-space: nowrap !important;
  cursor: pointer !important;
}

#hns-footer-cta .poc-submit-btn:hover {
  background: linear-gradient(135deg, #0084ff 0%, #0066a3 100%) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 22px rgba(0, 115, 230, 0.6) !important;
  border-color: rgba(255, 255, 255, 0.4) !important;
}

#hns-footer-cta .poc-submit-btn .arrow {
  display: inline-block;
  transition: transform 0.2s ease;
  font-size: 16px;
}

#hns-footer-cta .poc-submit-btn:hover .arrow {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  #hns-footer-cta .cta-container {
    flex-direction: column !important;
    align-items: flex-start !important;
    padding: 26px 22px !important;
    gap: 20px !important;
  }
  
  #hns-footer-cta .cta-title {
    font-size: 18px !important;
  }

  #hns-footer-cta .cta-desc {
    font-size: 13.5px !important;
  }

  #hns-footer-cta .cta-button-group {
    width: 100% !important;
  }

  #hns-footer-cta .poc-submit-btn {
    width: 100% !important;
  }
}

/* ==========================================================================
   Contact Page Styles (contact.html)
   ========================================================================== */

.contact-channels-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 50px;
}

.contact-channel-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.contact-channel-card:hover {
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: rgba(0, 86, 134, 0.08);
  color: var(--color-primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.contact-card-label {
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.contact-card-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin-bottom: 8px;
  word-break: break-all;
}

.contact-card-sub {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: auto;
}

/* ==========================================================================
   Footer (Enterprise 3DS Precision)
   ========================================================================== */

.site-footer {
  background-color: var(--color-bg-footer);
  color: #94a3b8;
  padding: 34px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: auto;
  font-size: 13px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 0.9fr 1.1fr;
  gap: 36px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.footer-logo {
  height: 20px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-brand-name {
  font-weight: 400;
  font-size: 13px;
  color: #cbd5e1;
  letter-spacing: -0.2px;
}

.footer-company-info {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  margin: 4px 0 0 0;
  line-height: 1.65;
  font-size: 11.5px;
  color: #64748b;
  word-break: keep-all;
}

.footer-company-info span {
  white-space: nowrap;
}

.footer-company-info strong {
  color: #94a3b8;
  font-weight: 500;
}

.footer-col h4 {
  color: #cbd5e1;
  font-size: 12.5px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-col a {
  color: #94a3b8;
  font-size: 13px;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-phone {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
  letter-spacing: 0.2px;
}

.footer-email {
  font-size: 12.5px;
  color: #94a3b8;
  margin-bottom: 6px;
}

.footer-hours {
  font-size: 11.5px;
  color: #64748b;
  line-height: 1.4;
}

.footer-sep {
  display: inline-block;
  margin: 0 6px;
  color: rgba(255, 255, 255, 0.15);
  font-size: 11px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
  gap: 12px;
  font-size: 11.5px;
  color: #64748b;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
}

.footer-bottom-links a {
  color: #64748b;
  font-size: 11.5px;
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: #cbd5e1;
}

.footer-family-link {
  color: var(--color-accent-cyan) !important;
  font-weight: 500;
}

.footer-family-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Modal Dialogs (Policy, Form Success, Mobile Nav)
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(6, 14, 23, 0.7);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 20px;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  overflow: hidden;
  position: relative;
}

.modal-card form {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.modal-backdrop.open .modal-card {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
  background-color: #ffffff;
  flex-shrink: 0;
  z-index: 10;
}

.modal-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-primary-navy);
}

.modal-close-btn {
  font-size: 26px;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  border: none;
  background: none;
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--color-primary-navy);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  flex: 1;
  min-height: 0;
  font-size: 14px;
  color: var(--color-text-main);
  line-height: 1.7;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  background-color: #ffffff;
  flex-shrink: 0;
  z-index: 10;
  box-shadow: 0 -4px 14px rgba(0, 0, 0, 0.05);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100%;
  background-color: #ffffff;
  box-shadow: var(--shadow-xl);
  z-index: 2500;
  display: flex;
  flex-direction: column;
  padding: 30px 24px;
  transition: right var(--transition-normal);
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 30px;
}

.mobile-nav-links a {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary-navy);
}

.mobile-nav-links a.active {
  color: var(--color-primary-blue);
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--color-primary-navy);
  color: #fff;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* Keyframes */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Tech Library Write, Admin Auth & SEO Styles
   ========================================================================== */

.library-actions-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-write-article {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: linear-gradient(135deg, #00A4E4 0%, #0077B6 100%);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  padding: 10px 20px;
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 164, 228, 0.28);
  transition: all var(--transition-fast);
}

.btn-write-article:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 164, 228, 0.38);
  filter: brightness(1.06);
}

.admin-auth-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #0f172a;
  border: 1px solid rgba(0, 164, 228, 0.35);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 12px;
  color: #94a3b8;
}

.admin-badge-icon {
  font-size: 11px;
}

.admin-badge-name {
  color: #38bdf8;
  font-weight: 700;
}

.btn-admin-logout {
  background: none;
  border: none;
  color: #f87171;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  padding: 0 0 0 4px;
}

.btn-admin-logout:hover {
  color: #ef4444;
}

/* Admin DB Status Pill & Config Button */
.db-status-pill {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

.db-status-pill.online {
  background-color: rgba(34, 197, 94, 0.16);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.4);
}

.db-status-pill.offline {
  background-color: rgba(234, 179, 8, 0.16);
  color: #facc15;
  border: 1px solid rgba(234, 179, 8, 0.4);
}

.btn-db-config {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #f1f5f9;
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-db-config:hover {
  background: rgba(0, 164, 228, 0.3);
  border-color: #00A4E4;
  color: #ffffff;
}

/* Cloud DB Config Modal Styles */
.db-modal-status-box {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
}

.db-modal-status-box.online {
  background: #f0fdf4;
  border: 1px solid #86efac;
}

.db-modal-status-box.offline {
  background: #fefce8;
  border: 1px solid #fde047;
}

.status-indicator-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.db-modal-status-box.online .status-dot {
  background-color: #22c55e;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
}

.db-modal-status-box.offline .status-dot {
  background-color: #eab308;
  box-shadow: 0 0 8px rgba(234, 179, 8, 0.6);
}

.db-modal-status-box.online strong {
  color: #15803d;
}

.db-modal-status-box.offline strong {
  color: #a16207;
}

.db-guide-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

/* Modal Form Styles */
.modal-card-lg {
  max-width: 1040px;
  height: 92vh;
  max-height: 92vh;
}

.write-form-grid {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.cover-dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  background-color: #f8fafc;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cover-dropzone:hover,
.cover-dropzone.dragover {
  border-color: #00A4E4;
  background-color: rgba(0, 164, 228, 0.04);
}

.cover-dropzone-icon {
  font-size: 28px;
  color: #00A4E4;
  margin-bottom: 6px;
}

.cover-dropzone-text {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-primary-navy);
  margin-bottom: 4px;
}

.cover-dropzone-sub {
  font-size: 12px;
  color: var(--color-text-muted);
}

.cover-preview-box {
  position: relative;
  width: 100%;
  height: 220px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 10px;
  background-color: #0f172a;
  border: 1px solid var(--color-border);
}

.cover-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-preview-actions {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 8px;
}

.cover-preview-btn {
  background: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: background var(--transition-fast);
}

.cover-preview-btn:hover {
  background: rgba(15, 23, 42, 1);
  color: #38bdf8;
}

.preset-pills-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.preset-pill-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-muted);
}

.preset-pill-btn {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 11.5px;
  color: #475569;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-pill-btn:hover,
.preset-pill-btn.active {
  border-color: #00A4E4;
  color: #00A4E4;
  background: rgba(0, 164, 228, 0.05);
}

/* Content Editor Toolbar & Header */
.editor-header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.editor-mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 11.5px;
  font-weight: 700;
}

/* ==========================================================================
   Naver Blog SmartEditor ONE Style Rich Editor System
   ========================================================================== */
.editor-toolbar-naver {
  display: flex;
  flex-direction: column;
  background-color: #f8fafc;
  border: 1px solid var(--color-border);
  border-bottom: 1px solid #e2e8f0;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  user-select: none;
}

.naver-toolbar-main {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  padding: 8px 12px;
  border-bottom: 1px solid #e2e8f0;
  background: #ffffff;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.naver-toolbar-sub {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 6px 12px;
  background: #f8fafc;
  font-size: 12px;
}

.naver-sub-label {
  font-size: 11.5px;
  font-weight: 700;
  color: #64748b;
  margin-right: 2px;
}

.naver-sub-btn {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 11.5px;
  font-weight: 600;
  color: #334155;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.naver-sub-btn:hover {
  background: #e2e8f0;
  color: var(--color-primary-navy);
  border-color: #94a3b8;
}

.naver-tool-cluster {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.naver-tools-right {
  margin-left: auto;
}

.naver-tool-divider {
  width: 1px;
  height: 20px;
  background: #cbd5e1;
  margin: 0 4px;
  flex-shrink: 0;
}

.naver-tool-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  height: 32px;
  min-width: 32px;
  padding: 0 5px;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.naver-tool-btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #0f172a;
}

.naver-tool-btn:active,
.naver-tool-btn.active {
  background: #e0f2fe;
  color: #0284c7;
  border-color: #7dd3fc;
}

/* Font Size Dropdown Button & Caret */
.naver-tool-dropdown-wrap {
  position: relative;
  display: inline-flex;
}

.naver-dropdown-btn {
  min-width: 52px;
  padding: 0 8px;
  gap: 4px;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  font-size: 13.5px;
  font-weight: 600;
  color: #1e293b;
  justify-content: space-between;
}

.naver-dropdown-caret {
  color: #64748b;
  transition: transform 0.2s;
}

.naver-dropdown-caret-mini {
  color: #64748b;
  margin-left: 1px;
}

/* Dropdown Menus Base */
.naver-dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  z-index: 1200;
  animation: naverDropFade 0.15s ease-out;
}

@keyframes naverDropFade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Naver Font Size Menu (Matching user screenshot) */
.naver-fontsize-menu {
  width: 100px;
  padding: 4px 0;
  max-height: 320px;
  overflow-y: auto;
}

.naver-fontsize-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 7px 16px;
  background: transparent;
  border: none;
  font-size: 14px;
  color: #334155;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast);
}

.naver-fontsize-item:hover {
  background-color: #f1f5f9;
  color: #0f172a;
}

.naver-fontsize-item.active {
  color: #15803d;
  font-weight: 700;
}

.naver-check {
  color: #16a34a;
  font-size: 13.5px;
  font-weight: 800;
  line-height: 1;
}

/* Typography buttons: Bold, Italic, Underline, Strikethrough */
.font-bold-btn strong {
  font-weight: 800;
  font-size: 14.5px;
}

.font-italic-btn em {
  font-style: italic;
  font-family: serif;
  font-weight: 700;
  font-size: 15px;
}

.font-underline-btn u {
  text-decoration: underline;
  font-weight: 700;
  font-size: 14px;
}

.font-strike-btn s {
  font-weight: 600;
  font-size: 14px;
}

/* Font Color & Indicator Bar */
.naver-color-icon-t {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  line-height: 1;
}

.color-letter {
  font-weight: 800;
  font-size: 13.5px;
  color: #1e293b;
  margin-bottom: 2px;
}

.naver-color-bar {
  width: 14px;
  height: 3px;
  border-radius: 1px;
}

/* Highlight Box */
.naver-hilite-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 3px;
  background: #fef08a;
  color: #000;
  font-weight: 800;
  font-size: 11px;
  border: 1px solid #eab308;
}

/* Color Picker Menu */
.naver-color-menu {
  width: 200px;
  padding: 12px;
}

.naver-palette-title {
  font-size: 11.5px;
  font-weight: 700;
  color: #475569;
  margin-bottom: 8px;
  border-bottom: 1px solid #f1f5f9;
  padding-bottom: 4px;
}

.naver-palette-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.naver-color-swatch {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.naver-color-swatch:hover {
  transform: scale(1.15);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.25);
  z-index: 2;
}

.clear-swatch {
  background: #ffffff;
  color: #dc2626;
  border: 1px dashed #cbd5e1;
}

.naver-custom-color-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #e2e8f0;
  padding-top: 8px;
  font-size: 11.5px;
  color: #64748b;
}

.naver-custom-color-box input[type="color"] {
  border: none;
  width: 30px;
  height: 26px;
  border-radius: 4px;
  cursor: pointer;
  background: transparent;
}

/* Table Picker Menu */
.naver-table-menu {
  width: 230px;
  padding: 12px;
}

.naver-table-header {
  font-size: 12px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 8px;
}

.naver-table-grid {
  display: grid;
  grid-template-columns: repeat(6, 26px);
  grid-template-rows: repeat(6, 26px);
  gap: 4px;
  margin: 6px auto;
  justify-content: center;
}

.table-grid-cell {
  width: 26px;
  height: 26px;
  border: 1px solid #cbd5e1;
  background: #f8fafc;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
}

.table-grid-cell.highlighted {
  background: #bae6fd;
  border-color: #0284c7;
}

.naver-table-label {
  text-align: center;
  font-size: 12.5px;
  font-weight: 700;
  color: #0284c7;
  margin: 8px 0 6px;
}

.naver-table-custom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 11.5px;
  color: #64748b;
  padding-top: 8px;
  border-top: 1px solid #e2e8f0;
}

.naver-table-custom input {
  width: 40px;
  padding: 3px 4px;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  text-align: center;
  font-size: 12px;
}

.naver-table-insert-btn {
  padding: 4px 10px;
  background: #00a4e4;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.naver-table-insert-btn:hover {
  background: #0087be;
}

/* Table Action Bar (Floating/Docked when inside table) */
.editor-table-action-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 7px 12px;
  background: linear-gradient(90deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 1px solid #bae6fd;
  border-bottom: none;
  animation: naverDropFade 0.2s ease-out;
}

.table-bar-badge {
  font-size: 12px;
  font-weight: 700;
  color: #0369a1;
  margin-right: 4px;
}

.table-bar-btn {
  background: #ffffff;
  border: 1px solid #93c5fd;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 11.5px;
  font-weight: 600;
  color: #0369a1;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.table-bar-btn:hover {
  background: #dbeafe;
  border-color: #60a5fa;
  color: #1d4ed8;
}

.table-bar-btn.danger {
  color: #b91c1c;
  border-color: #fca5a5;
  background: #fff5f5;
}

.table-bar-btn.danger:hover {
  background: #fee2e2;
  border-color: #ef4444;
}

/* Special Characters Modal */
.special-char-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
  z-index: 2500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.special-char-modal {
  max-width: 540px;
  width: 100%;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: naverDropFade 0.2s ease-out;
}

.special-char-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid #e2e8f0;
  background: #f8fafc;
}

.special-char-header-title {
  display: flex;
  align-items: center;
  font-size: 14.5px;
  color: #0f172a;
}

.special-char-icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: #00a4e4;
  color: #fff;
  border-radius: 4px;
  font-weight: 800;
  font-size: 14px;
  margin-right: 8px;
}

.special-char-close-btn {
  font-size: 22px;
  color: #94a3b8;
  background: transparent;
  border: none;
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.special-char-close-btn:hover {
  color: #0f172a;
  background: #e2e8f0;
}

.special-char-tabs {
  display: flex;
  border-bottom: 1px solid #e2e8f0;
  background: #ffffff;
  overflow-x: auto;
}

.special-tab-btn {
  flex: 1;
  padding: 10px 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: #64748b;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.special-tab-btn:hover {
  color: #00a4e4;
  background: #f8fafc;
}

.special-tab-btn.active {
  color: #00a4e4;
  border-bottom-color: #00a4e4;
  font-weight: 700;
}

.special-char-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
  gap: 6px;
  padding: 16px;
  max-height: 240px;
  overflow-y: auto;
  background: #ffffff;
}

.special-char-btn {
  height: 40px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  font-size: 17px;
  color: #1e293b;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.12s ease-in-out;
  user-select: none;
}

.special-char-btn:hover {
  background: #e0f2fe;
  border-color: #00a4e4;
  color: #0284c7;
  transform: scale(1.15);
  box-shadow: 0 4px 10px rgba(0, 164, 228, 0.2);
  z-index: 2;
}

.special-char-btn:active {
  transform: scale(0.95);
}

.special-char-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-top: 1px solid #e2e8f0;
  background: #f8fafc;
}

.special-char-preview-box {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-char {
  font-size: 24px;
  font-weight: 800;
  color: #00a4e4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
}

.preview-info {
  font-size: 12px;
  color: #64748b;
}

.special-char-done-btn {
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
}

/* Legacy editor-tool-btn compatibility */
.editor-tool-btn {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 600;
  color: #334155;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.editor-tool-btn:hover { background: #e2e8f0; }
.editor-tool-btn.active { background: #0284c7; color: #fff; }

/* Rich Visual Blog Editor */
.write-rich-editor {
  min-height: 280px;
  max-height: 480px;
  overflow-y: auto;
  padding: 16px 20px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 0 0 var(--radius-md) var(--radius-md) !important;
  outline: none;
  font-family: inherit;
  font-size: 15.5px;
  line-height: 1.85;
  color: #334155;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  cursor: text;
}

.write-rich-editor:focus {
  border-color: var(--color-primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 164, 228, 0.15);
}

/* Empty Placeholder */
.write-rich-editor:empty::before,
.write-rich-editor[data-empty="true"]::before {
  content: attr(data-placeholder);
  color: #94a3b8;
  font-size: 14.5px;
  line-height: 1.7;
  pointer-events: none;
  display: block;
}

/* Typography & Visual Blocks inside Rich Editor */
.write-rich-editor h3,
.write-rich-editor .editor-h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary-navy, #0a2540);
  margin: 22px 0 12px;
  line-height: 1.35;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 8px;
}

.write-rich-editor h4,
.write-rich-editor .editor-h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary-navy, #0a2540);
  margin: 18px 0 10px;
  line-height: 1.4;
}

.write-rich-editor blockquote,
.write-rich-editor .art-quote {
  border-left: 4px solid var(--color-primary-blue, #00A4E4);
  background: #f8fafc;
  padding: 12px 18px;
  margin: 18px 0;
  color: #475569;
  font-style: italic;
  font-size: 15.5px;
  line-height: 1.7;
  border-radius: 0 6px 6px 0;
}

.write-rich-editor ul.custom-art-list,
.write-rich-editor ul {
  margin: 14px 0;
  padding-left: 24px;
  list-style-type: disc;
}

.write-rich-editor ul li {
  margin-bottom: 6px;
  line-height: 1.7;
}

.write-rich-editor .insight-callout-box {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border-left: 4px solid var(--color-primary-blue, #00A4E4);
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 20px 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.write-rich-editor .callout-inner {
  color: #0369a1;
  font-size: 15px;
  line-height: 1.7;
  font-weight: 500;
}

.write-rich-editor hr,
.write-rich-editor .editor-divider {
  border: none;
  height: 2px;
  background: #e2e8f0;
  margin: 24px 0;
}

.write-rich-editor .art-check-item,
.article-content-body .art-check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 10px 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: #1e293b;
}

.write-rich-editor .check-badge,
.article-content-body .check-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: #0284c7;
  color: #ffffff;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
}

.write-rich-editor strong {
  font-weight: 700;
  color: #0f172a;
}

.write-rich-editor p {
  margin-bottom: 12px;
  line-height: 1.85;
}

.write-content-area {
  border-radius: 0 0 var(--radius-md) var(--radius-md) !important;
  font-family: inherit;
  line-height: 1.7;
  font-size: 14.5px;
}

/* Responsive Table Container & Styling */
.editor-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 18px 0;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

table.editor-custom-table,
.write-rich-editor table,
.article-content-body table,
.article-detail-wrap table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14.5px;
  line-height: 1.6;
}

table.editor-custom-table th,
.write-rich-editor table th,
.article-content-body table th,
.article-detail-wrap table th {
  background-color: #f1f5f9;
  color: #0f172a;
  font-weight: 700;
  padding: 12px 14px;
  border: 1px solid #cbd5e1;
  border-bottom: 2px solid #94a3b8;
}

table.editor-custom-table td,
.write-rich-editor table td,
.article-content-body table td,
.article-detail-wrap table td {
  padding: 10px 14px;
  border: 1px solid #e2e8f0;
  color: #334155;
  min-width: 60px;
}

table.editor-custom-table tr:nth-child(even) td,
.write-rich-editor table tr:nth-child(even) td,
.article-content-body table tr:nth-child(even) td,
.article-detail-wrap table tr:nth-child(even) td {
  background-color: #f8fafc;
}

table.editor-custom-table tr:hover td,
.write-rich-editor table tr:hover td {
  background-color: #f0f9ff;
}

.write-rich-editor td:focus,
.write-rich-editor th:focus {
  outline: 2px solid #00a4e4;
  background-color: #f0fdf4;
}

/* Explicit Alignment Rules for Editor and Published View */
.write-rich-editor [style*="text-align: center"],
.article-detail-wrap [style*="text-align: center"],
.article-content-body [style*="text-align: center"],
.write-rich-editor p[align="center"],
.article-detail-wrap p[align="center"] {
  text-align: center !important;
}

.write-rich-editor [style*="text-align: right"],
.article-detail-wrap [style*="text-align: right"],
.article-content-body [style*="text-align: right"],
.write-rich-editor p[align="right"],
.article-detail-wrap p[align="right"] {
  text-align: right !important;
}

.write-rich-editor [style*="text-align: justify"],
.article-detail-wrap [style*="text-align: justify"],
.article-content-body [style*="text-align: justify"],
.write-rich-editor p[align="justify"],
.article-detail-wrap p[align="justify"] {
  text-align: justify !important;
}

.write-rich-editor [style*="text-align: left"],
.article-detail-wrap [style*="text-align: left"],
.article-content-body [style*="text-align: left"],
.write-rich-editor p[align="left"],
.article-detail-wrap p[align="left"] {
  text-align: left !important;
}

/* Tags Preview List */
.tags-preview-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.tag-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 164, 228, 0.08);
  color: #0284c7;
  border: 1px solid rgba(0, 164, 228, 0.25);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11.5px;
  font-weight: 600;
}

/* SEO Preview Box */
.seo-preview-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 16px;
}

.seo-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.seo-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 700;
  color: #0284c7;
  background: rgba(0, 164, 228, 0.1);
  padding: 3px 8px;
  border-radius: 4px;
}

.seo-engine-tabs {
  display: flex;
  gap: 6px;
}

.seo-engine-tab {
  background: none;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  color: #64748b;
  cursor: pointer;
}

.seo-engine-tab.active {
  background: #0f172a;
  color: #ffffff;
  border-color: #0f172a;
}

.seo-snippet-box {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 12px;
}

.seo-snippet-url {
  font-size: 12px;
  color: #202124;
  margin-bottom: 3px;
  font-family: -apple-system, sans-serif;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.seo-snippet-title {
  font-size: 16px;
  font-weight: 600;
  color: #1a0dab;
  line-height: 1.35;
  margin-bottom: 5px;
  text-decoration: underline;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.seo-snippet-desc {
  font-size: 12.5px;
  color: #4d5156;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.seo-checklist {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px 16px;
  font-size: 11.5px;
  color: #059669;
  padding-top: 10px;
  border-top: 1px dashed #cbd5e1;
}

/* Article Detail Tags & Admin Actions */
.article-tags-wrap {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 20px 0;
}

.article-tag-item {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  color: #0284c7;
  background: rgba(0, 164, 228, 0.08);
  border: 1px solid rgba(0, 164, 228, 0.2);
  border-radius: 4px;
  padding: 4px 12px;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.article-tag-item:hover {
  background: #00A4E4;
  color: #ffffff;
}

.article-admin-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
  padding: 12px 16px;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: var(--radius-sm);
}

.btn-edit-article {
  background: #0284c7;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.btn-edit-article:hover {
  background: #0369a1;
}

.btn-delete-article {
  background: #ef4444;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.btn-delete-article:hover {
  background: #dc2626;
}

/* Custom Blog Article Typography & Components */
.card-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
}

.card-tag-pill {
  font-size: 11px;
  font-weight: 600;
  color: #0284c7;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 3px;
  padding: 1px 7px;
}

.card-admin-action {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

.btn-card-edit {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-card-edit:hover {
  background: #16a34a;
  color: #ffffff;
  border-color: #16a34a;
}

.btn-card-del {
  background: #fee2e2;
  color: #dc2626;
  border: 1px solid #fecaca;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-card-del:hover {
  background: #ef4444;
  color: #ffffff;
}

/* Articles Empty State */
.articles-empty-state {
  grid-column: 1 / -1;
  padding: 70px 24px;
  text-align: center;
  background: #ffffff;
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin: 10px 0 30px;
}

.articles-empty-state .empty-icon {
  font-size: 46px;
  margin-bottom: 14px;
}

.articles-empty-state .empty-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary-navy);
  margin-bottom: 8px;
}

.articles-empty-state .empty-desc {
  font-size: 14.5px;
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 520px;
  margin: 0 auto 22px;
}

.insight-callout-box {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border-left: 4px solid var(--color-primary-blue);
  border-radius: 0 8px 8px 0;
  padding: 18px 22px;
  margin: 28px 0;
  box-shadow: var(--shadow-sm);
}

.callout-inner {
  color: #0369a1;
  font-size: 15px;
  line-height: 1.7;
  font-weight: 500;
}

.article-content-body h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary-navy);
  margin: 36px 0 16px;
  line-height: 1.35;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 8px;
}

.article-content-body h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin: 26px 0 12px;
}

.article-content-body blockquote {
  border-left: 4px solid #cbd5e1;
  padding-left: 18px;
  margin: 20px 0;
  color: #475569;
  font-style: italic;
  font-size: 15.5px;
  line-height: 1.7;
}

.article-content-body ul.custom-art-list {
  margin: 16px 0;
  padding-left: 24px;
  list-style-type: disc;
}

.article-content-body ul.custom-art-list li {
  margin-bottom: 8px;
  line-height: 1.7;
  color: #334155;
  font-size: 15.5px;
}

.article-content-body hr {
  margin: 36px 0;
  border: none;
  border-top: 1px solid #e2e8f0;
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title { font-size: 36px; }
  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .core-solutions-grid { grid-template-columns: 1fr; }
  .eng-steps-grid { grid-template-columns: repeat(2, 1fr); }
  .why-us-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .inquiry-grid { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
  .contact-channels-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-height: 66px; }
  .brand-logo { height: 44px; }
  .contact-form-center-wrap .form-card { padding: 30px 20px !important; }
  .section { padding: 50px 0; }
  .nav-desktop, .btn-header-cta { display: none; }
  .mobile-menu-btn { display: flex; }
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .hero-metrics { grid-template-columns: 1fr; }
  .competence-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .eng-steps-grid { grid-template-columns: 1fr; }
  .why-us-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .ref-items-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* Footer Admin Button Style */
.footer-admin-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #cbd5e1 !important;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px !important;
  font-weight: 600;
  text-decoration: none !important;
  transition: all var(--transition-fast);
  margin-left: 8px;
  cursor: pointer;
}

.footer-admin-btn:hover {
  background: rgba(0, 164, 228, 0.2);
  border-color: #38bdf8;
  color: #38bdf8 !important;
  transform: translateY(-1px);
}

/* ==========================================================================
   Admin Inquiries Management & Notification Diagnostic Panel
   ========================================================================== */
.btn-inquiries-manage {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: #ffffff;
  border-radius: var(--radius-full);
  padding: 3px 10px;
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-inquiries-manage:hover {
  background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
  border-color: #38bdf8;
  transform: translateY(-1px);
}

.badge-count {
  background: #ef4444;
  color: #ffffff;
  border-radius: var(--radius-full);
  padding: 1px 6px;
  font-size: 10px;
  font-weight: 800;
  line-height: 1.2;
}

.modal-card-xl {
  max-width: 1080px;
  width: 95%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.inquiries-dashboard {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.inquiries-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.inquiries-stat-card {
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.inquiries-stat-card.stat-unread {
  background: rgba(239, 68, 68, 0.05);
  border-color: rgba(239, 68, 68, 0.3);
}

.inquiries-stat-card .stat-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.inquiries-stat-card .stat-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary-navy);
}

.inquiries-stat-card.stat-unread .stat-value {
  color: #ef4444;
}

.inquiries-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.inquiries-filter-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.btn-filter-inquiry {
  background: #f1f5f9;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-filter-inquiry.active {
  background: var(--color-primary-navy);
  border-color: var(--color-primary-navy);
  color: #ffffff;
}

.inquiries-actions-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-csv-download {
  background: #10b981;
  border: 1px solid #059669;
  color: #ffffff;
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all var(--transition-fast);
}

.btn-csv-download:hover {
  background: #059669;
}

.inquiries-table-wrap {
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
}

.inquiries-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.inquiries-table th {
  position: sticky;
  top: 0;
  background: #f8fafc;
  color: #475569;
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  z-index: 1;
}

.inquiries-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #f1f5f9;
  color: var(--color-text-main);
  vertical-align: middle;
}

.inquiries-table tr:hover td {
  background-color: #f8fafc;
}

.inquiries-table tr.row-unread td {
  background-color: rgba(239, 68, 68, 0.03);
}

.tag-inquiry-type {
  display: inline-block;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.tag-inquiry-type.type-diag {
  background: rgba(0, 164, 228, 0.12);
  color: #0284c7;
  border: 1px solid rgba(0, 164, 228, 0.3);
}

.tag-inquiry-type.type-general {
  background: rgba(99, 102, 241, 0.12);
  color: #4f46e5;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.tag-inquiry-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
}

.tag-inquiry-status.status-new {
  background: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
}

.tag-inquiry-status.status-done {
  background: #dcfce7;
  color: #16a34a;
  border-color: #86efac;
}

.inquiry-detail-preview {
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  color: #334155;
}

.inquiry-detail-preview:hover {
  color: var(--color-primary-blue);
  text-decoration: underline;
}

/* Diagnostic & Notification Settings Box */
.notification-diagnostic-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.diag-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.diag-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--color-primary-navy);
  display: flex;
  align-items: center;
  gap: 6px;
}

.diag-tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.diag-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.diag-card-title {
  font-size: 13px;
  font-weight: 700;
  color: #1e293b;
}

.diag-card-desc {
  font-size: 12px;
  color: #64748b;
  line-height: 1.4;
}

.diag-card-action {
  display: flex;
  gap: 8px;
  margin-top: auto;
}

.diag-status-result {
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 4px;
  display: none;
  line-height: 1.4;
}

@media (max-width: 768px) {
  .inquiries-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .diag-tools-grid { grid-template-columns: 1fr; }
  .inquiries-toolbar { flex-direction: column; align-items: stretch; }
}

/* ==========================================================================
   Article Draft Management System (임시저장 목록 & 관리 모달)
   ========================================================================== */
.draft-badge-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 19px;
  height: 19px;
  padding: 0 5px;
  font-size: 11px;
  font-weight: 700;
  border-radius: 999px;
  background: #0073e6;
  color: #ffffff;
  line-height: 1;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.draft-badge-count.has-drafts {
  background: #ff7a00;
  box-shadow: 0 0 8px rgba(255, 122, 0, 0.45);
}

/* Notice Bars inside write modal */
.draft-active-notice-bar {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 8px;
  padding: 9px 14px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  animation: fadeInDown 0.25s ease;
}

.draft-notice-icon {
  font-size: 15px;
}

.btn-draft-switch-new {
  font-size: 12px;
  font-weight: 600;
  color: #0284c7;
  background: #ffffff;
  border: 1px solid #bae6fd;
  padding: 4px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-draft-switch-new:hover {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
}

.draft-available-notice-bar {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 8px;
  padding: 9px 14px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  animation: fadeInDown 0.25s ease;
}

/* Draft List Modal */
#articleDraftListModal {
  z-index: 2100 !important;
}

.draft-list-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.draft-empty-state {
  text-align: center;
  padding: 45px 20px;
  color: var(--color-text-muted);
}

.draft-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 15px 18px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.draft-card:hover {
  border-color: #0073e6;
  box-shadow: 0 4px 14px rgba(0, 34, 68, 0.08);
  transform: translateY(-1px);
}

.draft-card.is-active {
  border-color: #00a4e4;
  background: #f0f9ff;
  box-shadow: 0 0 0 1px #00a4e4, 0 4px 12px rgba(0, 164, 228, 0.12);
}

.draft-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.draft-cat-badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  color: #005686;
  background: #e0f2fe;
  border-radius: 4px;
}

.draft-active-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  color: #0284c7;
  background: #e0f2fe;
  border: 1px solid #bae6fd;
  border-radius: 4px;
}

.draft-time {
  font-size: 11.5px;
  color: var(--color-text-light);
}

.draft-card-title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--color-primary-navy);
  margin: 0;
  line-height: 1.4;
  word-break: break-all;
}

.draft-card-snippet {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.draft-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px dashed #e2e8f0;
}

.draft-card-tags {
  font-size: 11.5px;
  color: #64748b;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 55%;
}

.draft-card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.btn-draft-load {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 700;
  background: linear-gradient(135deg, #0073e6 0%, #005686 100%);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-draft-load:hover {
  background: linear-gradient(135deg, #0084ff 0%, #0066a3 100%);
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 115, 230, 0.35);
}

.btn-draft-del {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  color: #ef4444;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-draft-del:hover {
  background: #ef4444;
  color: #ffffff;
  border-color: #ef4444;
}

@keyframes badgePop {
  0% { transform: scale(0.8); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}