/* 이 페이지 및 소스는 3EA Networks에 저작권이 귀속됩니다.
무단 사용시에 저작권법 및 부정경쟁방지법에 의거하여 법적 처벌 및 손해 배상 책임을 질 수 있습니다.

This page and its source are copyrighted by 3EA Networks. Unauthorized use may result in legal punishment and damages under the Copyright Act and the Unfair Competition Prevention Act. */
/* 
 * 3EA 도구모음 - 공통 스타일 (네임스페이스 적용)
 * 접두사 t3ea- 사용으로 클래스 충돌 방지
 */

/* --------------------------------------
   1. 디자인 토큰 및 테마
-------------------------------------- */
:root {
  /* 브랜드 색상 */
  --t3ea-brand: #6366f1;
  --t3ea-brand-hover: #4f46e5;
  --t3ea-brand-light: #eef2ff;
  --t3ea-brand-dim: rgba(99, 102, 241, 0.15);
  --t3ea-brand-dark: #3730a3;

  /* 그레이스케일 - 라이트 테마 */
  --t3ea-gray-900: #18181b;
  --t3ea-gray-800: #27272a;
  --t3ea-gray-700: #3f3f46;
  --t3ea-gray-600: #52525b;
  --t3ea-gray-500: #71717a;
  --t3ea-gray-400: #a1a1aa;
  --t3ea-gray-300: #d4d4d8;
  --t3ea-gray-200: #e4e4e7;
  --t3ea-gray-100: #f4f4f5;
  --t3ea-gray-50: #fafafa;
  --t3ea-white: #ffffff;

  /* 액센트 색상 */
  --t3ea-accent-blue: #3b82f6;
  --t3ea-accent-green: #10b981;
  --t3ea-accent-yellow: #f59e0b;
  --t3ea-accent-red: #ef4444;
  --t3ea-accent-purple: #8b5cf6;

  /* 타이포그래피 */
  --t3ea-font-h1: 2.5rem;
  --t3ea-font-h2: 2rem;
  --t3ea-font-h3: 1.5rem;
  --t3ea-font-h4: 1.25rem;
  --t3ea-font-p: 1rem;
  --t3ea-font-small: 0.875rem;
  --t3ea-font-xs: 0.75rem;

  /* 간격 */
  --t3ea-space-1: 4px;
  --t3ea-space-2: 8px;
  --t3ea-space-3: 12px;
  --t3ea-space-4: 16px;
  --t3ea-space-5: 24px;
  --t3ea-space-6: 32px;
  --t3ea-space-7: 40px;
  --t3ea-space-8: 48px;
  --t3ea-space-9: 64px;
  --t3ea-space-10: 80px;

  /* 경계 반경 */
  --t3ea-radius-sm: 4px;
  --t3ea-radius-md: 8px;
  --t3ea-radius-lg: 12px;
  --t3ea-radius-xl: 16px;
  --t3ea-radius-2xl: 20px;
  --t3ea-radius-full: 9999px;

  /* 그림자 */
  --t3ea-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --t3ea-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.05);
  --t3ea-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
  --t3ea-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.025);
  --t3ea-shadow-brand: 0 4px 12px rgba(99, 102, 241, 0.2);

  /* 트랜지션 */
  --t3ea-transition-fast: 0.15s ease;
  --t3ea-transition-normal: 0.25s ease;
  --t3ea-transition-slow: 0.35s ease;
}

/* 다크 테마 */
[data-theme="dark"] {
  /* 그레이스케일 - 다크 테마 */
  --t3ea-gray-900: #f4f4f5;
  --t3ea-gray-800: #e4e4e7;
  --t3ea-gray-700: #d4d4d8;
  --t3ea-gray-600: #a1a1aa;
  --t3ea-gray-500: #71717a;
  --t3ea-gray-400: #52525b;
  --t3ea-gray-300: #3f3f46;
  --t3ea-gray-200: #27272a;
  --t3ea-gray-100: #18181b;
  --t3ea-gray-50: #09090b;
  --t3ea-white: #09090b;

  /* 다크 테마 브랜드 조정 */
  --t3ea-brand-light: rgba(99, 102, 241, 0.2);

  /* 다크 테마 그림자 조정 */
  --t3ea-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --t3ea-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --t3ea-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --t3ea-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);

  background: var(--t3ea-gray-50);
}

/* --------------------------------------
   2. 리셋 및 기본 스타일
-------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font: 500 var(--t3ea-font-p)/1.6 Pretendard, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--t3ea-gray-600);
  background: var(--t3ea-white);
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
  flex-direction: column;
  overflow-x: hidden;
  margin-top: 4rem !important; /* 상단 여백 추가 */
}

main {
  max-width: 1500px;
  margin: 0 auto;
  /*padding: var(--t3ea-space-9) var(--t3ea-space-5) var(--t3ea-space-7);*/
  flex: 1;
  width: 100%;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--t3ea-gray-900);
  margin-bottom: var(--t3ea-space-5);
  transition: color 0.3s;
  line-height: 1.3;
}

h1 {
  font-size: var(--t3ea-font-h1);
  color: var(--t3ea-gray-900);
  font-weight: 800;
}

h2 {
  font-size: var(--t3ea-font-h2);
  position: relative;
  padding-bottom: var(--t3ea-space-3);
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 3px;
  background: var(--t3ea-brand);
  border-radius: 2px;
}

h3 {
  font-size: var(--t3ea-font-h3);
  color: var(--t3ea-gray-800);
}

h4 {
  font-size: var(--t3ea-font-h4);
  font-weight: 600;
  color: var(--t3ea-gray-700);
}

p {
  font-size: var(--t3ea-font-p);
  margin-bottom: var(--t3ea-space-4);
  line-height: 1.7;
}

a {
  color: var(--t3ea-brand);
  text-decoration: none;
  transition: color var(--t3ea-transition-fast);
}

a:hover {
  color: var(--t3ea-brand-hover);
}

ul, ol {
  padding-left: var(--t3ea-space-5);
  margin-bottom: var(--t3ea-space-4);
}

li {
  margin-bottom: var(--t3ea-space-2);
}

/* --------------------------------------
   3. 레이아웃 유틸리티
-------------------------------------- */
.t3ea-container {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 var(--t3ea-space-5);
  width: 100%;
}

.t3ea-grid {
  display: grid;
  gap: var(--t3ea-space-6);
}

.t3ea-grid--3cols {
  grid-template-columns: repeat(3, 1fr);
}

.t3ea-flex {
  display: flex;
}

.t3ea-flex--center {
  align-items: center;
}

.t3ea-flex--between {
  justify-content: space-between;
}

.t3ea-flex--gap3 {
  gap: var(--t3ea-space-3);
}

/* --------------------------------------
   4. 컨텐츠 박스 (이전 card 대체)
-------------------------------------- */
.t3ea-box {
  background: var(--t3ea-white);
  border-radius: var(--t3ea-radius-2xl);
  box-shadow: var(--t3ea-shadow-lg);
  padding: var(--t3ea-space-6);
  transition: transform var(--t3ea-transition-normal), box-shadow var(--t3ea-transition-normal);
  height: 100%;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--t3ea-gray-100);
}

.t3ea-box:hover {
  transform: translateY(-5px);
  box-shadow: var(--t3ea-shadow-xl), var(--t3ea-shadow-brand);
}

.t3ea-box__link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.t3ea-box__icon {
  font-size: 2.5rem;
  color: var(--t3ea-brand);
  margin-bottom: var(--t3ea-space-4);
  transition: transform var(--t3ea-transition-normal);
}

.t3ea-box:hover .t3ea-box__icon {
  transform: scale(1.1);
}

[data-theme="dark"] .t3ea-search__input {
  background: var(--t3ea-gray-300);
  color: var(--t3ea-gray-900);
}

.t3ea-search__input:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--t3ea-brand-light), var(--t3ea-shadow-brand);
  background: white;
}

[data-theme="dark"] .t3ea-search__input:focus {
  background: var(--t3ea-gray-200);
}

/* --------------------------------------
   10. 카테고리 제목
-------------------------------------- */
.t3ea-category {
  margin-top: var(--t3ea-space-9);
  margin-bottom: var(--t3ea-space-6);
  display: flex;
  align-items: center;
  gap: var(--t3ea-space-3);
  position: relative;
  padding-bottom: var(--t3ea-space-3);
  border-bottom: 1px solid var(--t3ea-gray-200);
}

.t3ea-category::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 60px;
  height: 3px;
  background: var(--t3ea-brand);
  border-radius: 2px;
  transition: width 0.3s;
}

.t3ea-category:hover::after {
  width: 100px;
}

.t3ea-category__icon {
  color: var(--t3ea-brand);
  font-size: 1.8rem;
}

/* --------------------------------------
   11. 빠른 링크
-------------------------------------- */
.t3ea-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--t3ea-space-3);
  justify-content: center;
  margin: var(--t3ea-space-5) 0;
}

.t3ea-quick-link {
  padding: var(--t3ea-space-2) var(--t3ea-space-4);
  background: var(--t3ea-gray-100);
  border-radius: var(--t3ea-radius-full);
  color: var(--t3ea-gray-700);
  text-decoration: none;
  font-size: var(--t3ea-font-small);
  font-weight: 500;
  transition: all 0.2s;
}

[data-theme="dark"] .t3ea-quick-link {
  background: var(--t3ea-gray-300);
  color: var(--t3ea-gray-900);
}

.t3ea-quick-link:hover {
  background: var(--t3ea-brand-light);
  color: var(--t3ea-brand);
  transform: translateY(-2px);
}

[data-theme="dark"] .t3ea-quick-link:hover {
  background: rgba(99, 102, 241, 0.2);
  color: var(--t3ea-brand);
}

/* --------------------------------------
   12. 푸터
-------------------------------------- */
.t3ea-footer {
  padding: var(--t3ea-space-8) 0 var(--t3ea-space-4) 0;
  margin-top: var(--t3ea-space-8);
  background: var(--t3ea-gray-50);
  border-top: 1px solid var(--t3ea-gray-100);
  position: relative;
}

.t3ea-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, 
    var(--t3ea-brand) 0%, 
    var(--t3ea-accent-blue) 25%, 
    var(--t3ea-accent-purple) 50%, 
    var(--t3ea-brand-hover) 75%, 
    var(--t3ea-brand) 100%);
  opacity: 0.7;
}

[data-theme="dark"] .t3ea-footer {
  background: var(--t3ea-gray-100);
  border-top: 1px solid var(--t3ea-gray-200);
}

.t3ea-footer__container {
  display: flex;
  flex-direction: column;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 var(--t3ea-space-5);
}

.t3ea-footer__top {
  display: flex;
  flex-wrap: wrap;
  gap: var(--t3ea-space-8);
  margin-bottom: var(--t3ea-space-8);
}

.t3ea-footer__brand {
  flex: 1;
  min-width: 250px;
}

.t3ea-footer__logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  margin-bottom: var(--t3ea-space-3);
}

.t3ea-footer__desc {
  color: var(--t3ea-gray-500);
  font-size: var(--t3ea-font-small);
  max-width: 300px;
  line-height: 1.6;
}

.t3ea-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--t3ea-space-8);
  flex: 2;
}

.t3ea-footer__col {
  min-width: 160px;
}

.t3ea-footer__col h4 {
  color: var(--t3ea-gray-800);
  font-size: var(--t3ea-font-small);
  font-weight: 600;
  margin-bottom: var(--t3ea-space-3);
  position: relative;
  display: inline-block;
}

.t3ea-footer__col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 24px;
  height: 2px;
  background: var(--t3ea-brand);
  border-radius: 2px;
}

.t3ea-footer__link {
  display: block;
  color: var(--t3ea-gray-500);
  text-decoration: none;
  font-size: var(--t3ea-font-small);
  margin-bottom: var(--t3ea-space-2);
  transition: color var(--t3ea-transition-normal), transform var(--t3ea-transition-normal);
  padding: var(--t3ea-space-1) 0;
}

.t3ea-footer__link:hover {
  color: var(--t3ea-brand);
  transform: translateX(3px);
}

.t3ea-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--t3ea-space-4);
  border-top: 1px solid var(--t3ea-gray-200);
}

[data-theme="dark"] .t3ea-footer__bottom {
  border-top: 1px solid var(--t3ea-gray-300);
}

.t3ea-footer__copyright {
  color: var(--t3ea-gray-500);
  font-size: var(--t3ea-font-small);
}

.t3ea-footer__legal {
  display: flex;
  gap: var(--t3ea-space-4);
}

.t3ea-footer__legal-link {
  color: var(--t3ea-gray-500);
  text-decoration: none;
  font-size: var(--t3ea-font-small);
  transition: color var(--t3ea-transition-normal);
}

.t3ea-footer__legal-link:hover {
  color: var(--t3ea-brand);
}

/* --------------------------------------
   13. 버튼
-------------------------------------- */
.t3ea-btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--t3ea-space-3) var(--t3ea-space-6);
  font: 500 var(--t3ea-font-p)/1 Pretendard, system-ui, sans-serif;
  border: none;
  border-radius: var(--t3ea-radius-full);
  cursor: pointer;
  transition: transform var(--t3ea-transition-fast), background var(--t3ea-transition-fast), box-shadow var(--t3ea-transition-fast);
  background: var(--t3ea-gray-100);
  color: var(--t3ea-gray-700);
}

.t3ea-btn:active {
  transform: scale(.97);
}

.t3ea-btn--primary {
  background: var(--t3ea-brand);
  color: white;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.t3ea-btn--primary:hover {
  background: var(--t3ea-brand-hover);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.t3ea-btn--secondary {
  background: var(--t3ea-gray-100);
  color: var(--t3ea-gray-700);
}

.t3ea-btn--secondary:hover {
  background: var(--t3ea-gray-200);
}

.t3ea-btn--sm {
  padding: var(--t3ea-space-2) var(--t3ea-space-4);
  font-size: var(--t3ea-font-small);
}

.t3ea-btn--lg {
  padding: var(--t3ea-space-4) var(--t3ea-space-7);
  font-size: calc(var(--t3ea-font-p) * 1.1);
  font-weight: 600;
}

/* --------------------------------------
   14. 스크롤 상단 버튼 
-------------------------------------- */
.t3ea-scroll-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 45px;
  height: 45px;
  background: var(--t3ea-brand);
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: var(--t3ea-shadow-brand);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s;
  z-index: 999;
}

.t3ea-scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.t3ea-scroll-top:hover {
  background: var(--t3ea-brand-hover);
  transform: translateY(-5px);
}

/* --------------------------------------
   15. 애니메이션
-------------------------------------- */
@keyframes t3ea-fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes t3ea-spin {
  to { transform: rotate(360deg); }
}

.t3ea-fade-in-up {
  opacity: 0;
  animation: t3ea-fadeInUp 0.5s ease forwards;
}

/* 모바일 검색 오버레이 */
.t3ea-mobile-search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(5px);
}

.t3ea-mobile-search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.t3ea-mobile-search-container {
  width: 90%;
  max-width: 500px;
  padding: 20px;
  margin-top: 80px;
}

.t3ea-search--mobile {
  position: relative;
  width: 100%;
}

.t3ea-mobile-search__close {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--t3ea-gray-500);
  font-size: 24px;
  cursor: pointer;
  padding: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 모바일 검색 입력 필드 */
.t3ea-search--mobile .t3ea-search__input {
  background: white;
  color: var(--t3ea-gray-900);
  font-size: 16px;
  padding-right: 40px;
  height: 56px;
}

[data-theme="dark"] .t3ea-search--mobile .t3ea-search__input {
  background: var(--t3ea-gray-200);
  color: var(--t3ea-gray-900);
}

/* 검색 결과 없음 메시지 */
.t3ea-no-results {
  padding: var(--t3ea-space-6);
  text-align: center;
  background: var(--t3ea-gray-100);
  border-radius: var(--t3ea-radius-2xl);
  margin: var(--t3ea-space-6) auto;
  max-width: 500px;
}

[data-theme="dark"] .t3ea-no-results {
  background: var(--t3ea-gray-200);
}

.t3ea-no-results__icon {
  font-size: 3rem;
  margin-bottom: var(--t3ea-space-3);
}

.t3ea-no-results h3 {
  margin-bottom: var(--t3ea-space-2);
}

.t3ea-no-results p {
  margin-bottom: var(--t3ea-space-4);
  color: var(--t3ea-gray-500);
}

/* --------------------------------------
   16. 반응형 미디어 쿼리
-------------------------------------- */
@media (min-width: 769px) {
  /* 데스크톱 전용 스타일 */
  .t3ea-tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .t3ea-tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* 모바일 스타일 */
  body {
    margin-top: 4rem !important; /* 모바일에서는 여백 줄임 */
  }
  
  main {
    padding-top: calc(70px + var(--t3ea-space-6)); /* 여백 조정 */
  }
  
  .t3ea-header__container {
    padding: 0 var(--t3ea-space-4);
  }
  
  .t3ea-header__logo-subtext {
    display: none;
  }
  
  .t3ea-header__mobile-menu-btn {
    display: block;
  }
  
  .t3ea-nav {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--t3ea-white);
    z-index: 999; /* z-index 증가 */
    margin-left: 0;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--t3ea-space-5);
    box-shadow: var(--t3ea-shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    overflow-y: auto;
    visibility: hidden; /* 초기에는 숨김 처리 */
  }
  
  [data-theme="dark"] .t3ea-nav {
    background: var(--t3ea-gray-100);
  }
  
  .t3ea-nav.show {
    transform: translateX(0);
    visibility: visible; /* 표시될 때는 보이게 */
  }
  
  .t3ea-nav__list {
    flex-direction: column;
    width: 100%;
    height: auto;
  }
  
  .t3ea-nav__item {
    width: 100%;
    height: auto;
  }
  
  .t3ea-nav__dropdown-toggle {
    width: 100%;
    justify-content: space-between;
    padding: var(--t3ea-space-4) var(--t3ea-space-3);
  }
  
  .t3ea-nav__dropdown-menu {
    position: static;
    width: 100%;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border: none;
    padding: 0;
    margin-left: var(--t3ea-space-4);
    display: none; /* 초기에는 숨김 처리 */
  }
  
  .t3ea-nav__dropdown.active .t3ea-nav__dropdown-menu {
    max-height: 500px;
    display: block; /* 활성화 시 표시 */
  }
  
  .t3ea-header__actions {
    margin-top: var(--t3ea-space-6);
    width: 100%;
    justify-content: space-between;
    padding: var(--t3ea-space-4) var(--t3ea-space-2);
    border-top: 1px solid var(--t3ea-gray-200);
  }
  
  .t3ea-tool-grid {
    grid-template-columns: 1fr;
  }
  
  .t3ea-footer__top {
    flex-direction: column;
    gap: var(--t3ea-space-6);
  }
  
  .t3ea-footer__bottom {
    flex-direction: column;
    gap: var(--t3ea-space-4);
    text-align: center;
  }
  
  .t3ea-footer__legal {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .t3ea-hero h1 {
    font-size: var(--t3ea-font-h1);
  }
  
  .t3ea-hero p {
    font-size: var(--t3ea-font-p);
  }
  
  /* 모바일 메뉴 확장 시 본문 스크롤 방지 */
  body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
  }
  
  /* 드롭다운 토글 버튼 탭 영역 개선 */
  .t3ea-nav__dropdown-toggle {
    padding: var(--t3ea-space-4) var(--t3ea-space-3);
    width: 100%;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .t3ea-hero {
    padding: var(--t3ea-space-6) var(--t3ea-space-4);
  }
  
  .t3ea-quick-links {
    gap: var(--t3ea-space-2);
  }
  
  .t3ea-quick-link {
    padding: var(--t3ea-space-2) var(--t3ea-space-3);
    font-size: var(--t3ea-font-xs);
  }
}-box {
  background: var(--t3ea-gray-200);
  border-color: var(--t3ea-gray-300);
}

/* --------------------------------------
   5. 헤더 및 내비게이션
-------------------------------------- */
.t3ea-header {
  width: 100%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  transition: background 0.3s, box-shadow 0.3s;
  box-shadow: var(--t3ea-shadow-md);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  height: 70px;
  display: flex;
  align-items: center;
}

[data-theme="dark"] .t3ea-header {
  background: rgba(39, 39, 42, 0.9);
}

.t3ea-header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 var(--t3ea-space-5);
  width: 100%;
  height: 100%;
}

/* 로고 */
.t3ea-header__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: transform var(--t3ea-transition-normal);
  padding: var(--t3ea-space-2) 0;
  height: 100%;
}

.t3ea-header__logo:hover {
  transform: scale(1.05);
}

.t3ea-header__logo-text {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--t3ea-brand) 0%, var(--t3ea-brand-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.t3ea-header__logo-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--t3ea-brand-hover);
  border-radius: 50%;
  margin: 0 5px;
  position: relative;
  top: -8px;
}

.t3ea-header__logo-subtext {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--t3ea-gray-700);
  margin-left: 4px;
  transition: color var(--t3ea-transition-normal);
}

/* 내비게이션 */
.t3ea-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-grow: 1;
  margin-left: var(--t3ea-space-6);
  height: 100%;
}

.t3ea-nav__list {
  display: flex;
  height: 100%;
  list-style: none;
  padding: 0;
  margin: 0 auto; /* 메뉴 중앙 정렬 */
}

.t3ea-nav__item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

/* 드롭다운 메뉴 */
.t3ea-nav__dropdown {
  position: relative;
}

.t3ea-nav__dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--t3ea-space-2);
  padding: var(--t3ea-space-3) var(--t3ea-space-4);
  color: var(--t3ea-gray-700);
  background: none;
  border: none;
  font-family: inherit;
  font-size: var(--t3ea-font-p);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--t3ea-transition-normal), background var(--t3ea-transition-normal);
  border-radius: var(--t3ea-radius-md);
}

.t3ea-nav__dropdown-toggle:hover {
  color: var(--t3ea-brand);
  background: var(--t3ea-gray-50);
}

.t3ea-nav__arrow {
  font-size: 1.2rem;
  transition: transform var(--t3ea-transition-normal);
}

.t3ea-nav__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--t3ea-white);
  border-radius: var(--t3ea-radius-lg);
  box-shadow: var(--t3ea-shadow-lg);
  padding: var(--t3ea-space-2);
  list-style: none;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--t3ea-transition-normal), visibility var(--t3ea-transition-normal), transform var(--t3ea-transition-normal);
  border: 1px solid var(--t3ea-gray-100);
}

.t3ea-nav__dropdown.active .t3ea-nav__dropdown-menu,
.t3ea-nav__dropdown:hover .t3ea-nav__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.t3ea-nav__dropdown.active .t3ea-nav__arrow,
.t3ea-nav__dropdown:hover .t3ea-nav__arrow {
  transform: rotate(180deg);
}

.t3ea-nav__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--t3ea-space-3);
  padding: var(--t3ea-space-3) var(--t3ea-space-4);
  color: var(--t3ea-gray-700);
  text-decoration: none;
  transition: color var(--t3ea-transition-normal), background var(--t3ea-transition-normal);
  border-radius: var(--t3ea-radius-md);
  font-weight: 500;
}

.t3ea-nav__dropdown-item:hover {
  color: var(--t3ea-brand);
  background: var(--t3ea-gray-50);
}

.t3ea-nav__dropdown-item.active {
  color: var(--t3ea-brand);
  font-weight: 600;
  background: var(--t3ea-brand-light);
}

.t3ea-nav__icon {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* 헤더 액션 버튼 */
.t3ea-header__actions {
  display: flex;
  align-items: center;
  gap: var(--t3ea-space-4);
}

.t3ea-header__search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--t3ea-gray-100);
  color: var(--t3ea-gray-700);
  transition: all var(--t3ea-transition-normal);
}

.t3ea-header__search-btn:hover {
  background: var(--t3ea-brand-light);
  color: var(--t3ea-brand);
  transform: translateY(-2px);
}

/* 모바일 메뉴 버튼 */
.t3ea-header__mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: var(--t3ea-space-2);
  cursor: pointer;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 200;
}

.t3ea-header__menu-icon-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--t3ea-gray-700);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
}

/* --------------------------------------
   6. 테마 토글 스위치
-------------------------------------- */
.t3ea-toggle {
  display: block;
  position: relative;
  width: 51px;
  height: 27px;
  margin-left: var(--t3ea-space-3);
}

.t3ea-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.t3ea-toggle__track {
  position: absolute;
  inset: 0;
  border-radius: var(--t3ea-radius-full);
  background: var(--t3ea-gray-300);
  transition: background var(--t3ea-transition-normal);
}

.t3ea-toggle__thumb {
  position: absolute;
  left: 4px;
  top: 4px;
  width: 19px;
  height: 19px;
  background: white;
  border-radius: 50%;
  transition: transform var(--t3ea-transition-normal);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.t3ea-toggle input:checked+.t3ea-toggle__track {
  background: var(--t3ea-brand);
}

.t3ea-toggle input:checked+.t3ea-toggle__track .t3ea-toggle__thumb {
  transform: translateX(24px);
}

/* --------------------------------------
   7. 메인 페이지 도구 카드
-------------------------------------- */
.t3ea-tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--t3ea-space-5);
}

.t3ea-tool-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--t3ea-radius-2xl);
  box-shadow: var(--t3ea-shadow-lg);
  transition: transform 0.3s, box-shadow 0.3s;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--t3ea-white);
  border: 1px solid var(--t3ea-gray-100);
}

[data-theme="dark"] .t3ea-tool-card {
  background: var(--t3ea-gray-200);
  border-color: var(--t3ea-gray-300);
}

.t3ea-tool-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--t3ea-shadow-xl), var(--t3ea-shadow-brand);
}

.t3ea-tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--t3ea-brand) 0%, var(--t3ea-brand-hover) 100%);
  transition: height 0.3s;
}

.t3ea-tool-card:hover::before {
  height: 8px;
}

.t3ea-tool-card__link {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--t3ea-space-6);
}

.t3ea-tool-card__icon-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 16px;
  margin-bottom: var(--t3ea-space-4);
  background: var(--t3ea-brand-light);
  transition: transform 0.3s;
}

[data-theme="dark"] .t3ea-tool-card__icon-wrapper {
  background: rgba(99, 102, 241, 0.2);
}

.t3ea-tool-card:hover .t3ea-tool-card__icon-wrapper {
  transform: scale(1.1);
}

.t3ea-tool-card__icon {
  font-size: 2rem;
  color: var(--t3ea-brand);
}

.t3ea-tool-card h3 {
  font-size: var(--t3ea-font-h4);
  margin-bottom: var(--t3ea-space-3);
  color: var(--t3ea-gray-900);
  position: relative;
  display: inline-block;
}

.t3ea-tool-card p {
  color: var(--t3ea-gray-600);
  font-size: var(--t3ea-font-small);
  line-height: 1.6;
  margin-bottom: 0;
  flex-grow: 1;
}

.t3ea-tool-card__action {
  margin-top: var(--t3ea-space-4);
  display: flex;
  align-items: center;
  font-weight: 600;
  color: var(--t3ea-brand);
  font-size: 0.9rem;
  transition: gap 0.3s;
  gap: var(--t3ea-space-2);
}

.t3ea-tool-card:hover .t3ea-tool-card__action {
  gap: var(--t3ea-space-3);
}

/* --------------------------------------
   8. 히어로 섹션 
-------------------------------------- */
.t3ea-hero {
  text-align: center;
  padding: var(--t3ea-space-8) var(--t3ea-space-5);
  margin-bottom: var(--t3ea-space-7);
  background: linear-gradient(135deg, var(--t3ea-brand-light) 0%, rgba(255,255,255,0) 100%);
  border-radius: var(--t3ea-radius-2xl);
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .t3ea-hero {
  background: linear-gradient(135deg, rgba(99,102,241,0.15) 0%, rgba(24,24,27,0) 100%);
}

.t3ea-hero::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--t3ea-brand-light) 0%, rgba(255,255,255,0) 70%);
  border-radius: 50%;
  top: -100px;
  right: -100px;
  opacity: 0.5;
}

[data-theme="dark"] .t3ea-hero::before {
  background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, rgba(24,24,27,0) 70%);
}

.t3ea-hero h1 {
  font-size: calc(var(--t3ea-font-h1) * 1.2);
  margin-bottom: var(--t3ea-space-3);
  background: linear-gradient(to right, var(--t3ea-brand) 0%, var(--t3ea-brand-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.t3ea-hero p {
  max-width: 600px;
  margin: 0 auto var(--t3ea-space-5) auto;
  color: var(--t3ea-gray-600);
  font-size: calc(var(--t3ea-font-p) * 1.1);
}

/* --------------------------------------
   9. 검색 바
-------------------------------------- */
.t3ea-search {
  position: relative;
  transition: all 0.3s ease;
  width: 100%;
  max-width: 600px;
  margin: var(--t3ea-space-5) auto;
}

.t3ea-search--active .t3ea-search__input {
  box-shadow: 0 0 0 2px var(--t3ea-brand-light), var(--t3ea-shadow-brand);
}

.t3ea-search__icon {
  position: absolute;
  left: var(--t3ea-space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--t3ea-gray-500);
  transition: color 0.3s;
}

.t3ea-search--active .t3ea-search__icon {
  color: var(--t3ea-brand);
}

.t3ea-search__input {
  width: 100%;
  padding: var(--t3ea-space-3) var(--t3ea-space-4) var(--t3ea-space-3) calc(var(--t3ea-space-4) * 2 + 24px);
  border: none;
  border-radius: var(--t3ea-radius-full);
  background: var(--t3ea-gray-100);
  color: var(--t3ea-gray-900);
  font-size: var(--t3ea-font-p);
  transition: all 0.3s;
  box-shadow: var(--t3ea-shadow-sm);
  height: 50px; /* 높이 증가 */
  outline: none; /* 아웃라인 제거 */
}

[data-theme="dark"] .t3ea-search__input {
  background: var(--t3ea-gray-300);
  color: var(--t3ea-gray-900);
}

.t3ea-search__input:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--t3ea-brand-light), var(--t3ea-shadow-brand);
  background: white;
}

[data-theme="dark"] .t3ea-search__input:focus {
  background: var(--t3ea-gray-200);
}

/* --------------------------------------
   10. 카테고리 제목
-------------------------------------- */
.t3ea-category {
  margin-top: var(--t3ea-space-9);
  margin-bottom: var(--t3ea-space-6);
  display: flex;
  align-items: center;
  gap: var(--t3ea-space-3);
  position: relative;
  padding-bottom: var(--t3ea-space-3);
  border-bottom: 1px solid var(--t3ea-gray-200);
}

.t3ea-category::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 60px;
  height: 3px;
  background: var(--t3ea-brand);
  border-radius: 2px;
  transition: width 0.3s;
}

.t3ea-category:hover::after {
  width: 100px;
}

.t3ea-category__icon {
  color: var(--t3ea-brand);
  font-size: 1.8rem;
}

/* --------------------------------------
   11. 빠른 링크
-------------------------------------- */
.t3ea-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--t3ea-space-3);
  justify-content: center;
  margin: var(--t3ea-space-5) 0;
}

.t3ea-quick-link {
  padding: var(--t3ea-space-2) var(--t3ea-space-4);
  background: var(--t3ea-gray-100);
  border-radius: var(--t3ea-radius-full);
  color: var(--t3ea-gray-700);
  text-decoration: none;
  font-size: var(--t3ea-font-small);
  font-weight: 500;
  transition: all 0.2s;
}

[data-theme="dark"] .t3ea-quick-link {
  background: var(--t3ea-gray-300);
  color: var(--t3ea-gray-900);
}

.t3ea-quick-link:hover {
  background: var(--t3ea-brand-light);
  color: var(--t3ea-brand);
  transform: translateY(-2px);
}

[data-theme="dark"] .t3ea-quick-link:hover {
  background: rgba(99, 102, 241, 0.2);
  color: var(--t3ea-brand);
}

/* --------------------------------------
   12. 푸터
-------------------------------------- */
.t3ea-footer {
  padding: var(--t3ea-space-8) 0 var(--t3ea-space-4) 0;
  margin-top: var(--t3ea-space-8);
  background: var(--t3ea-gray-50);
  border-top: 1px solid var(--t3ea-gray-100);
  position: relative;
}

.t3ea-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, 
    var(--t3ea-brand) 0%, 
    var(--t3ea-accent-blue) 25%, 
    var(--t3ea-accent-purple) 50%, 
    var(--t3ea-brand-hover) 75%, 
    var(--t3ea-brand) 100%);
  opacity: 0.7;
}

[data-theme="dark"] .t3ea-footer {
  background: var(--t3ea-gray-100);
  border-top: 1px solid var(--t3ea-gray-200);
}

.t3ea-footer__container {
  display: flex;
  flex-direction: column;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 var(--t3ea-space-5);
}

.t3ea-footer__top {
  display: flex;
  flex-wrap: wrap;
  gap: var(--t3ea-space-8);
  margin-bottom: var(--t3ea-space-8);
}

.t3ea-footer__brand {
  flex: 1;
  min-width: 250px;
}

.t3ea-footer__logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  margin-bottom: var(--t3ea-space-3);
}

.t3ea-footer__desc {
  color: var(--t3ea-gray-500);
  font-size: var(--t3ea-font-small);
  max-width: 300px;
  line-height: 1.6;
}

.t3ea-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--t3ea-space-8);
  flex: 2;
}

.t3ea-footer__col {
  min-width: 160px;
}

.t3ea-footer__col h4 {
  color: var(--t3ea-gray-800);
  font-size: var(--t3ea-font-small);
  font-weight: 600;
  margin-bottom: var(--t3ea-space-3);
  position: relative;
  display: inline-block;
}

.t3ea-footer__col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 24px;
  height: 2px;
  background: var(--t3ea-brand);
  border-radius: 2px;
}

.t3ea-footer__link {
  display: block;
  color: var(--t3ea-gray-500);
  text-decoration: none;
  font-size: var(--t3ea-font-small);
  margin-bottom: var(--t3ea-space-2);
  transition: color var(--t3ea-transition-normal), transform var(--t3ea-transition-normal);
  padding: var(--t3ea-space-1) 0;
}

.t3ea-footer__link:hover {
  color: var(--t3ea-brand);
  transform: translateX(3px);
}

.t3ea-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--t3ea-space-4);
  border-top: 1px solid var(--t3ea-gray-200);
}

[data-theme="dark"] .t3ea-footer__bottom {
  border-top: 1px solid var(--t3ea-gray-300);
}

.t3ea-footer__copyright {
  color: var(--t3ea-gray-500);
  font-size: var(--t3ea-font-small);
}

.t3ea-footer__legal {
  display: flex;
  gap: var(--t3ea-space-4);
}

.t3ea-footer__legal-link {
  color: var(--t3ea-gray-500);
  text-decoration: none;
  font-size: var(--t3ea-font-small);
  transition: color var(--t3ea-transition-normal);
}

.t3ea-footer__legal-link:hover {
  color: var(--t3ea-brand);
}

/* --------------------------------------
   13. 버튼
-------------------------------------- */
.t3ea-btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--t3ea-space-3) var(--t3ea-space-6);
  font: 500 var(--t3ea-font-p)/1 Pretendard, system-ui, sans-serif;
  border: none;
  border-radius: var(--t3ea-radius-full);
  cursor: pointer;
  transition: transform var(--t3ea-transition-fast), background var(--t3ea-transition-fast), box-shadow var(--t3ea-transition-fast);
  background: var(--t3ea-gray-100);
  color: var(--t3ea-gray-700);
}

.t3ea-btn:active {
  transform: scale(.97);
}

.t3ea-btn--primary {
  background: var(--t3ea-brand);
  color: white;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.t3ea-btn--primary:hover {
  background: var(--t3ea-brand-hover);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.t3ea-btn--secondary {
  background: var(--t3ea-gray-100);
  color: var(--t3ea-gray-700);
}

.t3ea-btn--secondary:hover {
  background: var(--t3ea-gray-200);
}

.t3ea-btn--sm {
  padding: var(--t3ea-space-2) var(--t3ea-space-4);
  font-size: var(--t3ea-font-small);
}

.t3ea-btn--lg {
  padding: var(--t3ea-space-4) var(--t3ea-space-7);
  font-size: calc(var(--t3ea-font-p) * 1.1);
  font-weight: 600;
}

/* --------------------------------------
   14. 스크롤 상단 버튼 
-------------------------------------- */
.t3ea-scroll-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 45px;
  height: 45px;
  background: var(--t3ea-brand);
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: var(--t3ea-shadow-brand);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s;
  z-index: 999;
}

.t3ea-scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.t3ea-scroll-top:hover {
  background: var(--t3ea-brand-hover);
  transform: translateY(-5px);
}

/* --------------------------------------
   15. 애니메이션
-------------------------------------- */
@keyframes t3ea-fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes t3ea-spin {
  to { transform: rotate(360deg); }
}

.t3ea-fade-in-up {
  opacity: 0;
  animation: t3ea-fadeInUp 0.5s ease forwards;
}

/* 모바일 검색 오버레이 */
.t3ea-mobile-search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(5px);
}

.t3ea-mobile-search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.t3ea-mobile-search-container {
  width: 90%;
  max-width: 500px;
  padding: 20px;
  margin-top: 80px;
}

.t3ea-search--mobile {
  position: relative;
  width: 100%;
}

.t3ea-mobile-search__close {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--t3ea-gray-500);
  font-size: 24px;
  cursor: pointer;
  padding: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 모바일 검색 입력 필드 */
.t3ea-search--mobile .t3ea-search__input {
  background: white;
  color: var(--t3ea-gray-900);
  font-size: 16px;
  padding-right: 40px;
  height: 56px;
}

[data-theme="dark"] .t3ea-search--mobile .t3ea-search__input {
  background: var(--t3ea-gray-200);
  color: var(--t3ea-gray-900);
}

/* 검색 결과 없음 메시지 */
.t3ea-no-results {
  padding: var(--t3ea-space-6);
  text-align: center;
  background: var(--t3ea-gray-100);
  border-radius: var(--t3ea-radius-2xl);
  margin: var(--t3ea-space-6) auto;
  max-width: 500px;
}

[data-theme="dark"] .t3ea-no-results {
  background: var(--t3ea-gray-200);
}

.t3ea-no-results__icon {
  font-size: 3rem;
  margin-bottom: var(--t3ea-space-3);
}

.t3ea-no-results h3 {
  margin-bottom: var(--t3ea-space-2);
}

.t3ea-no-results p {
  margin-bottom: var(--t3ea-space-4);
  color: var(--t3ea-gray-500);
}

/* --------------------------------------
   16. 반응형 미디어 쿼리
-------------------------------------- */
@media (min-width: 769px) {
  /* 데스크톱 전용 스타일 */
  .t3ea-tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .t3ea-tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* 모바일 스타일 */
  body {
    margin-top: 4rem !important; /* 모바일에서는 여백 줄임 */
  }
  
  main {
    padding-top: calc(70px + var(--t3ea-space-6)); /* 여백 조정 */
  }
  
  .t3ea-header__container {
    padding: 0 var(--t3ea-space-4);
  }
  
  .t3ea-header__logo-subtext {
    display: none;
  }
  
  .t3ea-header__mobile-menu-btn {
    display: block;
  }
  
  .t3ea-nav {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--t3ea-white);
    z-index: 999; /* z-index 증가 */
    margin-left: 0;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--t3ea-space-5);
    box-shadow: var(--t3ea-shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    overflow-y: auto;
    visibility: hidden; /* 초기에는 숨김 처리 */
  }
  
  [data-theme="dark"] .t3ea-nav {
    background: var(--t3ea-gray-100);
  }
  
  .t3ea-nav.show {
    transform: translateX(0);
    visibility: visible; /* 표시될 때는 보이게 */
  }
  
  .t3ea-nav__list {
    flex-direction: column;
    width: 100%;
    height: auto;
  }
  
  .t3ea-nav__item {
    width: 100%;
    height: auto;
  }
  
  .t3ea-nav__dropdown-toggle {
    width: 100%;
    justify-content: space-between;
    padding: var(--t3ea-space-4) var(--t3ea-space-3);
  }
  
  .t3ea-nav__dropdown-menu {
    position: static;
    width: 100%;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border: none;
    padding: 0;
    margin-left: var(--t3ea-space-4);
    display: none; /* 초기에는 숨김 처리 */
  }
  
  .t3ea-nav__dropdown.active .t3ea-nav__dropdown-menu {
    max-height: 500px;
    display: block; /* 활성화 시 표시 */
  }
  
  .t3ea-header__actions {
    margin-top: var(--t3ea-space-6);
    width: 100%;
    justify-content: space-between;
    padding: var(--t3ea-space-4) var(--t3ea-space-2);
    border-top: 1px solid var(--t3ea-gray-200);
  }
  
  .t3ea-tool-grid {
    grid-template-columns: 1fr;
  }
  
  .t3ea-footer__top {
    flex-direction: column;
    gap: var(--t3ea-space-6);
  }
  
  .t3ea-footer__bottom {
    flex-direction: column;
    gap: var(--t3ea-space-4);
    text-align: center;
  }
  
  .t3ea-footer__legal {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .t3ea-hero h1 {
    font-size: var(--t3ea-font-h1);
  }
  
  .t3ea-hero p {
    font-size: var(--t3ea-font-p);
  }
  
  /* 모바일 메뉴 확장 시 본문 스크롤 방지 */
  body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
  }
  
  /* 드롭다운 토글 버튼 탭 영역 개선 */
  .t3ea-nav__dropdown-toggle {
    padding: var(--t3ea-space-4) var(--t3ea-space-3);
    width: 100%;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .t3ea-hero {
    padding: var(--t3ea-space-6) var(--t3ea-space-4);
  }
  
  .t3ea-quick-links {
    gap: var(--t3ea-space-2);
  }
  
  .t3ea-quick-link {
    padding: var(--t3ea-space-2) var(--t3ea-space-3);
    font-size: var(--t3ea-font-xs);
  }
}
/* 이 페이지 및 소스는 3EA Networks에 저작권이 귀속됩니다.
무단 사용시에 저작권법 및 부정경쟁방지법에 의거하여 법적 처벌 및 손해 배상 책임을 질 수 있습니다.

This page and its source are copyrighted by 3EA Networks. Unauthorized use may result in legal punishment and damages under the Copyright Act and the Unfair Competition Prevention Act. */