@charset "utf-8";

/* ==========================================================================
   아이톡비즈 메인페이지 - main.css
   Design tone : Light & Clean B2B SaaS
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand */
  --itb-c-primary: #2b5cff;
  --itb-c-primary-dark: #1a3fd6;
  --itb-c-primary-light: #eaf0ff;
  --itb-c-primary-soft: #f4f7ff;
  --itb-c-accent: #00c2a8;
  --itb-c-accent-light: #e5faf6;
  --itb-c-kakao: #fee500;
  --itb-c-kakao-text: #3c1e1e;

  /* Neutral */
  --itb-c-text: #0d1424;
  --itb-c-text-sub: #4d5670;
  --itb-c-text-mute: #8a92a6;
  --itb-c-line: #e6e9f0;
  --itb-c-line-soft: #f0f2f7;
  --itb-c-bg: #ffffff;
  --itb-c-bg-alt: #f7f9fc;
  --itb-c-bg-deep: #0d1424;

  /* Elevation */
  --itb-sh-xs: 0 1px 2px rgba(13, 20, 36, .05);
  --itb-sh-sm: 0 2px 8px rgba(13, 20, 36, .06);
  --itb-sh-md: 0 8px 24px rgba(13, 20, 36, .08);
  --itb-sh-lg: 0 20px 48px rgba(13, 20, 36, .12);
  --itb-sh-primary: 0 12px 28px rgba(43, 92, 255, .28);

  /* Radius */
  --itb-r-sm: 8px;
  --itb-r-md: 14px;
  --itb-r-lg: 20px;
  --itb-r-xl: 28px;
  --itb-r-full: 999px;

  /* Layout */
  --itb-container: 1200px;
  --itb-header-h: 76px;

  /* Motion */
  --itb-ease: cubic-bezier(.22, .61, .36, 1);
}

/* --------------------------------------------------------------------------
   2. Scoped Reset & Base
   --------------------------------------------------------------------------
   ※ 스코프 단위 = .itb-scope (여러 번 사용 가능한 '클래스')
      공통 header / footer fragment 는 각각 .itb-scope 로 감싸고,
      리뉴얼된 메인 콘텐츠도 별도의 .itb-scope 로 감쌉니다.
      → 서브 페이지의 contents 영역은 스코프 밖이므로 bizmessage.css 그대로 동작.

      <div class="itb-scope">  header   </div>   ← 공통 fragment
      contents                                   ← 서브페이지는 스코프 없음
      <div class="itb-scope">  footer   </div>   ← 공통 fragment

   ※ 박스모델·엘리먼트 리셋은 :where() 로 감싸 명시도를 0 으로 유지합니다.
      (기존 전역 리셋과 동일한 강도라 .itb- 컴포넌트 룰을 덮어쓰지 않음)
   -------------------------------------------------------------------------- */
/* ※ bizmessage.css 최상단의
     * { margin:0; padding:0; font-family:'맑은고딕', ... }
   룰이 모든 요소에 font-family 를 '직접' 지정해 상속을 끊어버립니다.
   따라서 래퍼 하나가 아니라 하위 전체에 폰트를 명시해야 합니다.
   .itb-scope * (0,1,0) > * (0,0,0) 이므로 확실히 이깁니다. */
.itb-scope,
.itb-scope * {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont,
               'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
}

.itb-scope {
  font-size: 16px;
  line-height: 1.6;
  color: var(--itb-c-text);
  letter-spacing: -0.02em;
  text-align: left;
  min-width: 0;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

/* 박스모델 리셋 : 명시도 (0,0,0) */
:where(.itb-scope), :where(.itb-scope) *,
:where(.itb-scope) *::before, :where(.itb-scope) *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* 엘리먼트 리셋 : 명시도 (0,0,1) — 기존 전역 리셋과 동일 강도 */
:where(.itb-scope) img { max-width: 100%; display: block; border: 0; }
:where(.itb-scope) a { color: inherit; text-decoration: none; }
:where(.itb-scope) ul, :where(.itb-scope) ol, :where(.itb-scope) li { list-style: none; }
:where(.itb-scope) button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
:where(.itb-scope) input, :where(.itb-scope) textarea, :where(.itb-scope) select { font: inherit; color: inherit; }
:where(.itb-scope) table { border-collapse: collapse; width: 100%; }
:where(.itb-scope) :focus-visible { outline: 2px solid var(--itb-c-primary); outline-offset: 3px; border-radius: 4px; }

/* --- bizmessage.css 의 전역 엘리먼트 룰 역간섭 차단 ---
   아래 3개만 실제 충돌 항목이라 최소한으로 방어합니다.
   컴포넌트가 건드리지 않는 속성이므로 (0,1,1) 로 확실히 눌러 둡니다.

   · bizmessage : table { table-layout:fixed; overflow:hidden; text-overflow:ellipsis }
   · bizmessage : tr,td  { overflow:hidden; text-overflow:ellipsis }
   · bizmessage : td     { height:27px }
   -------------------------------------------------------------------------- */
.itb-scope table { table-layout: auto; overflow: visible; text-overflow: clip; }
.itb-scope tr, .itb-scope td, .itb-scope th { overflow: visible; text-overflow: clip; height: auto; }

/* --- 고정 헤더 높이 보정 ---------------------------------------------------
   헤더가 position:fixed 라 뒤따르는 contents 가 헤더에 가려집니다.
   공통 header fragment 맨 끝에 아래 스페이서 한 줄을 넣어두면
   모든 서브 페이지가 자동으로 헤더 높이만큼 내려갑니다.

     <div class="itb-header-spacer"></div>

   메인 페이지 히어로는 배경 그라데이션이 헤더 뒤까지 이어져야 하므로
   음수 마진으로 스페이서를 상쇄합니다(.itb-hero 규칙 참고).
   스페이서를 쓸 수 없는 구조라면 서브 페이지 contents 최상위에
   class="itb-header-offset" 를 직접 부여해도 동일한 결과가 됩니다.
   -------------------------------------------------------------------------- */
.itb-header-spacer { height: var(--itb-header-h); }
.itb-header-offset { padding-top: var(--itb-header-h); }

/* 모바일 메뉴 오픈 시 스크롤 잠금 (body 에 거는 유일한 예외) */
body.itb-is-locked { overflow: hidden; }

/* 스크린리더 전용 텍스트 (bizmessage 의 caption{width:0;text-indent:-9999em} 방어 포함) */
.itb-sr-only {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; overflow: hidden !important;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
  text-indent: 0; font-size: 1px;
}

/* --------------------------------------------------------------------------
   3. Layout Utilities
   -------------------------------------------------------------------------- */
.itb-container { width: 100%; max-width: var(--itb-container); margin: 0 auto; padding: 0 24px; }

.itb-section { padding: 120px 0; position: relative; }
.itb-section--alt { background: var(--itb-c-bg-alt); }
.itb-section--tight { padding: 88px 0; }

.itb-sec-head { text-align: center; margin-bottom: 60px; }
.itb-sec-head--left { text-align: left; }

.itb-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .08em;
  color: var(--itb-c-primary); text-transform: uppercase;
  padding: 7px 14px; border-radius: var(--itb-r-full);
  background: var(--itb-c-primary-light); margin-bottom: 20px;
}
.itb-eyebrow::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }

.itb-sec-title {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800; line-height: 1.3; letter-spacing: -0.035em;
}
.itb-sec-title em { font-style: normal; color: var(--itb-c-primary); }

.itb-sec-desc {
  margin-top: 18px; font-size: 17px; line-height: 1.75;
  color: var(--itb-c-text-sub); max-width: 720px;
}
.itb-sec-head:not(.itb-sec-head--left) .itb-sec-desc { margin-left: auto; margin-right: auto; }

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.itb-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 52px; padding: 0 28px; border-radius: var(--itb-r-full);
  font-size: 16px; font-weight: 700; white-space: nowrap;
  transition: transform .25s var(--itb-ease), box-shadow .25s var(--itb-ease), background .2s, color .2s, border-color .2s;
}
.itb-btn:hover { transform: translateY(-2px); }
.itb-btn--sm { height: 42px; padding: 0 20px; font-size: 14px; }
.itb-btn--lg { height: 60px; padding: 0 36px; font-size: 17px; }
.itb-btn--block { width: 100%; }

.itb-btn--primary { background: var(--itb-c-primary); color: #fff; box-shadow: var(--itb-sh-primary); }
.itb-btn--primary:hover { background: var(--itb-c-primary-dark); }

.itb-btn--ghost { background: #fff; color: var(--itb-c-text); border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-xs); }
.itb-btn--ghost:hover { border-color: var(--itb-c-primary); color: var(--itb-c-primary); }

.itb-btn--line { background: transparent; color: var(--itb-c-primary); border: 1.5px solid var(--itb-c-primary); }
.itb-btn--line:hover { background: var(--itb-c-primary); color: #fff; }

.itb-btn--dark { background: var(--itb-c-text); color: #fff; }
.itb-btn--dark:hover { background: #000; }

.itb-btn .itb-ico-arrow { transition: transform .25s var(--itb-ease); }
.itb-btn:hover .itb-ico-arrow { transform: translateX(3px); }

/* --------------------------------------------------------------------------
   5. Header
   -------------------------------------------------------------------------- */
.itb-header {
  position: fixed; inset: 0 0 auto 0; z-index: 900;
  height: var(--itb-header-h);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.itb-header.itb-is-scrolled { border-bottom-color: var(--itb-c-line); box-shadow: var(--itb-sh-xs); }
.itb-header__inner { display: flex; align-items: center; gap: 40px; height: 100%; }

.itb-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 21px; letter-spacing: -0.045em; }
.itb-logo__mark {
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--itb-c-primary) 0%, #6b8bff 100%);
  color: #fff; display: grid; place-items: center;
  font-size: 15px; font-weight: 800; letter-spacing: -0.06em;
  box-shadow: 0 4px 12px rgba(43, 92, 255, .3);
}
.itb-logo__mark span { transform: translateY(-1px); }

.itb-gnb { margin-right: auto; height: 100%; }
.itb-gnb__list { display: flex; align-items: center; gap: 2px; height: 100%; }
.itb-gnb__item { height: 100%; display: flex; align-items: center; }
.itb-gnb__link {
  position: relative; display: block; padding: 10px 12px; border-radius: var(--itb-r-sm);
  font-size: 16px; font-weight: 600; color: var(--itb-c-text-sub); white-space: nowrap;
  transition: color .2s, background .2s;
}
.itb-gnb__link::after {
  content: ''; position: absolute; left: 16px; right: 16px; bottom: -2px; height: 2px;
  background: var(--itb-c-primary); border-radius: 2px;
  transform: scaleX(0); transform-origin: center; transition: transform .28s var(--itb-ease);
}
.itb-gnb__link:hover, .itb-gnb__item.itb-is-active .itb-gnb__link { color: var(--itb-c-primary); }
.itb-gnb__item.itb-is-active .itb-gnb__link::after { transform: scaleX(1); }

.itb-header__util { display: flex; align-items: center; gap: 4px; }

/* --- 메가 드롭다운 --- */
.itb-mega {
  position: absolute; left: 0; right: 0; top: 100%;
  background: #fff; border-top: 1px solid var(--itb-c-line);
  box-shadow: 0 24px 48px rgba(13, 20, 36, .1);
  overflow: hidden; max-height: 0;
  transition: max-height .38s var(--itb-ease), opacity .25s var(--itb-ease);
  opacity: 0;
}
.itb-mega.itb-is-open { max-height: 520px; opacity: 1; }
.itb-mega .itb-container { display: none; }
.itb-mega.itb-is-open .itb-container { display: block; }

.itb-mega__panel { display: none; grid-template-columns: minmax(0, 280px) minmax(0, 1fr); gap: 48px; padding: 40px 0 44px; }
.itb-mega__panel.itb-is-active { display: grid; animation: megaIn .35s var(--itb-ease); }
@keyframes megaIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

.itb-mega__intro { padding-right: 40px; border-right: 1px solid var(--itb-c-line-soft); }
.itb-mega__badge {
  display: inline-flex; padding: 5px 12px; border-radius: var(--itb-r-full);
  background: var(--itb-c-primary-light); color: var(--itb-c-primary);
  font-size: 11px; font-weight: 800; letter-spacing: .1em;
}
.itb-mega__intro h3 { margin: 14px 0 10px; font-size: 22px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.35; }
.itb-mega__intro p { font-size: 14px; line-height: 1.7; color: var(--itb-c-text-sub); }
.itb-mega__more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 18px;
  font-size: 14px; font-weight: 700; color: var(--itb-c-primary);
}
.itb-mega__more:hover { text-decoration: underline; }

/* ※ repeat(auto-fit, minmax(0,1fr)) 는 최소 트랙이 0 이라 트랙이 1개만 생성됩니다.
      메뉴 컬럼 수가 패널마다 다르므로(1~4개) flex 로 균등 분할합니다. */
.itb-mega__cols { display: flex; align-items: flex-start; gap: 32px; }
.itb-mega__col { flex: 1 1 0; min-width: 0; max-width: 300px; }
.itb-mega__col h4 {
  font-size: 13px; font-weight: 800; color: var(--itb-c-text-mute);
  letter-spacing: .02em; padding-bottom: 10px; margin-bottom: 12px;
  border-bottom: 1px solid var(--itb-c-line-soft);
}
.itb-mega__col h4 + ul + h4 { margin-top: 24px; }
.itb-mega__col li + li { margin-top: 2px; }
.itb-mega__col a {
  display: block; padding: 7px 10px; margin-left: -10px; border-radius: 7px;
  font-size: 15px; font-weight: 600; color: var(--itb-c-text-sub);
  transition: color .18s, background .18s, transform .18s var(--itb-ease);
}
.itb-mega__col a:hover { color: var(--itb-c-primary); background: var(--itb-c-primary-soft); transform: translateX(3px); }

/* 2뎁스 제목(h4) 자체가 링크인 경우 — 3뎁스 링크 스타일이 먹지 않도록 되돌림 */
.itb-mega__col h4 a {
  display: inline; padding: 0; margin-left: 0; border-radius: 0;
  font-size: inherit; font-weight: inherit; color: inherit;
}
.itb-mega__col h4 a:hover { color: var(--itb-c-primary); background: none; transform: none; }

.itb-mega-dim {
  position: fixed; inset: 0; z-index: 880; background: rgba(13, 20, 36, .28);
  opacity: 0; visibility: hidden; transition: opacity .3s var(--itb-ease), visibility .3s;
}
.itb-mega-dim.itb-is-show { opacity: 1; visibility: visible; }

/* --- 메시지 전송 드롭다운 --- */
.itb-send-drop { position: relative; }
.itb-send-drop__btn {
  display: inline-flex; align-items: center; gap: 7px;
  height: 42px; padding: 0 16px; border-radius: var(--itb-r-full);
  background: var(--itb-c-bg-alt); border: 1px solid var(--itb-c-line);
  font-size: 14px; font-weight: 700; color: var(--itb-c-text); white-space: nowrap; flex-shrink: 0;
  transition: border-color .2s, background .2s, color .2s;
}
.itb-send-drop__btn svg { transition: transform .25s var(--itb-ease); }
.itb-send-drop__btn:hover { border-color: var(--itb-c-primary); color: var(--itb-c-primary); background: #fff; }
.itb-send-drop.itb-is-open .itb-send-drop__btn { border-color: var(--itb-c-primary); color: var(--itb-c-primary); background: #fff; }
.itb-send-drop.itb-is-open .itb-send-drop__btn svg { transform: rotate(180deg); }

.itb-send-drop__list {
  position: absolute; top: calc(100% + 10px); right: 0; z-index: 10;
  min-width: 206px; padding: 8px; border-radius: var(--itb-r-md);
  background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .24s var(--itb-ease), transform .24s var(--itb-ease), visibility .24s;
}
.itb-send-drop.itb-is-open .itb-send-drop__list { opacity: 1; visibility: visible; transform: none; }
.itb-send-drop__list a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--itb-r-sm);
  font-size: 14px; font-weight: 600; color: var(--itb-c-text-sub);
  transition: background .18s, color .18s;
}
.itb-send-drop__list a:hover { background: var(--itb-c-primary-soft); color: var(--itb-c-primary); }
.itb-dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.itb-dot--kakao { background: var(--itb-c-kakao); }
.itb-dot--rcs { background: var(--itb-c-primary); }
.itb-dot--sms { background: var(--itb-c-accent); }

/* --- 우측 플로팅 섹션 내비 --- */
.itb-side-nav {
  position: fixed; right: 26px; top: 50%; transform: translateY(-50%); z-index: 700;
  padding: 12px 8px; border-radius: var(--itb-r-full);
  background: rgba(255, 255, 255, .78);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-sm);
  opacity: 0; visibility: hidden; transition: opacity .35s var(--itb-ease), visibility .35s;
}
.itb-side-nav.itb-is-show { opacity: 1; visibility: visible; }
.itb-side-nav li + li { margin-top: 4px; }
.itb-side-nav a { position: relative; display: block; padding: 7px 6px; }
.itb-side-nav__dot {
  display: block; width: 8px; height: 8px; border-radius: 50%;
  background: #c8cede; transition: background .25s, transform .25s var(--itb-ease);
}
.itb-side-nav a:hover .itb-side-nav__dot { background: var(--itb-c-primary); transform: scale(1.3); }
.itb-side-nav a.itb-is-active .itb-side-nav__dot { background: var(--itb-c-primary); transform: scale(1.45); box-shadow: 0 0 0 4px rgba(43, 92, 255, .15); }

.itb-side-nav a::before {
  content: attr(data-label);
  position: absolute; right: calc(100% + 12px); top: 50%; transform: translate(6px, -50%);
  padding: 6px 12px; border-radius: var(--itb-r-full);
  background: var(--itb-c-text); color: #fff; font-size: 12px; font-weight: 700; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity .22s var(--itb-ease), transform .22s var(--itb-ease);
}
.itb-side-nav a:hover::before, .itb-side-nav a.itb-is-active::before { opacity: 1; transform: translate(0, -50%); }
.itb-side-nav a.itb-is-active::before { background: var(--itb-c-primary); }
.itb-header__util .itb-txt-link { padding: 10px 8px; font-size: 15px; font-weight: 600; color: var(--itb-c-text-sub); }
.itb-header__util .itb-txt-link:hover { color: var(--itb-c-text); }

.itb-nav-toggle { display: none; width: 44px; height: 44px; border-radius: var(--itb-r-sm); }
.itb-nav-toggle span { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--itb-c-text); border-radius: 2px; transition: transform .3s var(--itb-ease), opacity .2s; }
.itb-nav-toggle.itb-is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.itb-nav-toggle.itb-is-open span:nth-child(2) { opacity: 0; }
.itb-nav-toggle.itb-is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile drawer */
.itb-m-nav {
  position: fixed; inset: var(--itb-header-h) 0 0 0; z-index: 890;
  background: #fff; padding: 24px; overflow-y: auto;
  transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: opacity .28s var(--itb-ease), transform .28s var(--itb-ease), visibility .28s;
}
.itb-m-nav.itb-is-open { transform: none; opacity: 1; visibility: visible; }
.itb-m-nav__cta { display: grid; gap: 10px; margin-top: 28px; padding-bottom: 40px; }

.itb-m-acc__item { border-bottom: 1px solid var(--itb-c-line-soft); }
.itb-m-acc__head {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  padding: 16px 4px; font-size: 17px; font-weight: 700; text-align: left;
}
.itb-m-acc__ico { position: relative; width: 14px; height: 14px; flex: none; }
.itb-m-acc__ico::before, .itb-m-acc__ico::after {
  content: ''; position: absolute; left: 50%; top: 50%; background: var(--itb-c-text-mute);
  transform: translate(-50%, -50%); transition: transform .28s var(--itb-ease), background .2s;
}
.itb-m-acc__ico::before { width: 13px; height: 2px; }
.itb-m-acc__ico::after { width: 2px; height: 13px; }
.itb-m-acc__item.itb-is-open .itb-m-acc__head { color: var(--itb-c-primary); }
.itb-m-acc__item.itb-is-open .itb-m-acc__ico::before { background: var(--itb-c-primary); }
.itb-m-acc__item.itb-is-open .itb-m-acc__ico::after { transform: translate(-50%, -50%) rotate(90deg); background: var(--itb-c-primary); }

.itb-m-acc__body { display: none; padding: 4px 4px 18px; }
.itb-m-acc__item.itb-is-open .itb-m-acc__body { display: block; animation: fadeUp .3s var(--itb-ease); }
.itb-m-acc__body h5 { margin: 14px 0 6px; font-size: 12px; font-weight: 800; color: var(--itb-c-text-mute); letter-spacing: .02em; }
.itb-m-acc__body h5:first-child { margin-top: 4px; }
.itb-m-acc__body a { display: block; padding: 9px 12px; border-radius: 8px; font-size: 15px; font-weight: 600; color: var(--itb-c-text-sub); background: var(--itb-c-bg-alt); margin-bottom: 6px; }
.itb-m-acc__body a:active { background: var(--itb-c-primary-light); color: var(--itb-c-primary); }

.itb-m-nav__quick { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.itb-m-nav__quick a { padding: 9px 16px; border-radius: var(--itb-r-full); background: var(--itb-c-primary-soft); color: var(--itb-c-primary); font-size: 14px; font-weight: 700; }

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.itb-hero {
  position: relative; overflow: hidden;
  /* 헤더 스페이서를 상쇄해 배경 그라데이션이 고정 헤더 뒤까지 이어지게 함 */
  margin-top: calc(var(--itb-header-h) * -1);
  padding: calc(var(--itb-header-h) + 96px) 0 100px;
  background:
    radial-gradient(900px 520px at 12% -8%, #eaf0ff 0%, rgba(234, 240, 255, 0) 62%),
    radial-gradient(760px 480px at 92% 4%, #e5faf6 0%, rgba(229, 250, 246, 0) 60%),
    #fff;
}
.itb-hero::after {
  content: ''; position: absolute; inset: auto 0 0 0; height: 1px; background: var(--itb-c-line-soft);
}
.itb-hero__grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 64px; align-items: center;
}

.itb-hero__title {
  font-size: clamp(34px, 4.6vw, 58px); font-weight: 800;
  line-height: 1.24; letter-spacing: -0.04em; margin-bottom: 22px;
}
.itb-hero__title .itb-grad {
  background: linear-gradient(96deg, var(--itb-c-primary) 0%, #6a5bff 45%, var(--itb-c-accent) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.itb-hero__desc { font-size: 18px; line-height: 1.75; color: var(--itb-c-text-sub); max-width: 560px; }
.itb-hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.itb-hero__trust { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
.itb-trust-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 14px; border-radius: var(--itb-r-full);
  background: #fff; border: 1px solid var(--itb-c-line);
  font-size: 13px; font-weight: 600; color: var(--itb-c-text-sub);
  box-shadow: var(--itb-sh-xs);
}
.itb-trust-chip svg { flex: none; color: var(--itb-c-accent); }

/* Hero visual : message mockup */
.itb-hero__visual { position: relative; min-height: 520px; }
.itb-phone {
  position: relative; width: 300px; margin: 0 auto;
  background: #fff; border-radius: 40px; padding: 14px;
  border: 1px solid var(--itb-c-line);
  box-shadow: var(--itb-sh-lg);
}
.itb-phone__screen {
  border-radius: 28px; background: #b2c7d9; padding: 18px 14px 22px;
  min-height: 460px; display: flex; flex-direction: column; gap: 12px;
}
.itb-phone__bar {
  display: flex; align-items: center; gap: 8px; padding: 0 4px 12px;
  font-size: 13px; font-weight: 700; color: #2b3245;
}
.itb-phone__bar i { width: 26px; height: 26px; border-radius: 9px; background: var(--itb-c-kakao); display: grid; place-items: center; font-size: 12px; font-style: normal; color: var(--itb-c-kakao-text); }

.itb-bubble {
  background: #fff; border-radius: 4px 16px 16px 16px; padding: 14px;
  font-size: 13px; line-height: 1.6; box-shadow: 0 2px 6px rgba(0, 0, 0, .08);
}
.itb-bubble__tag {
  display: inline-block; font-size: 11px; font-weight: 700; color: var(--itb-c-kakao-text);
  background: var(--itb-c-kakao); padding: 3px 8px; border-radius: var(--itb-r-full); margin-bottom: 8px;
}
.itb-bubble__tag--rcs { background: var(--itb-c-primary); color: #fff; }
.itb-bubble strong { display: block; font-size: 14px; margin-bottom: 6px; }
.itb-bubble p { color: #4a5163; }
.itb-bubble__btn {
  margin-top: 12px; text-align: center; font-size: 12px; font-weight: 700;
  padding: 9px; border-radius: 8px; background: #f2f3f6; color: #3c4152;
}
.itb-bubble__thumb { height: 78px; border-radius: 10px; margin-bottom: 10px; background: linear-gradient(120deg, #2b5cff, #6a5bff 55%, #00c2a8); }

.itb-float-card {
  position: absolute; display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; border-radius: var(--itb-r-md); background: #fff;
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md); white-space: nowrap;
}
.itb-float-card__ico { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; flex: none; }
.itb-float-card__ico--blue { background: var(--itb-c-primary-light); color: var(--itb-c-primary); }
.itb-float-card__ico--mint { background: var(--itb-c-accent-light); color: var(--itb-c-accent); }
.itb-float-card b { display: block; font-size: 16px; line-height: 1.3; }
.itb-float-card span { font-size: 12px; color: var(--itb-c-text-mute); }
.itb-float-card--a { top: 34px; left: 0; animation: floaty 5s ease-in-out infinite; }
.itb-float-card--b { bottom: 66px; right: 0; animation: floaty 5s ease-in-out .8s infinite; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Hero stats */
.itb-hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-top: 80px; padding: 34px 40px;
  background: #fff; border: 1px solid var(--itb-c-line);
  border-radius: var(--itb-r-lg); box-shadow: var(--itb-sh-sm);
}
.itb-hero-stats__item { text-align: center; position: relative; }
.itb-hero-stats__item + .itb-hero-stats__item::before {
  content: ''; position: absolute; left: -12px; top: 6px; bottom: 6px; width: 1px; background: var(--itb-c-line);
}
.itb-hero-stats__num { font-size: clamp(26px, 3vw, 38px); font-weight: 800; letter-spacing: -0.04em; color: var(--itb-c-primary); }
.itb-hero-stats__num small { font-size: .55em; font-weight: 700; }
.itb-hero-stats__label { margin-top: 4px; font-size: 14px; color: var(--itb-c-text-sub); font-weight: 600; }
.itb-hero-stats__note { margin-top: 14px; font-size: 12px; color: var(--itb-c-text-mute); grid-column: 1 / -1; text-align: center; }

/* --------------------------------------------------------------------------
   7. Clients (logo slider + tags)
   -------------------------------------------------------------------------- */
.itb-clients { padding: 72px 0; border-bottom: 1px solid var(--itb-c-line-soft); background: #fff; }
.itb-clients__title { text-align: center; font-size: 15px; font-weight: 700; color: var(--itb-c-text-mute); letter-spacing: .02em; }
.itb-clients__title b { color: var(--itb-c-text); }

.itb-tag-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 24px 0 34px; }
.itb-tag-btn {
  padding: 9px 18px; border-radius: var(--itb-r-full); font-size: 14px; font-weight: 600;
  color: var(--itb-c-text-sub); background: var(--itb-c-bg-alt); border: 1px solid transparent;
  transition: all .2s;
}
.itb-tag-btn:hover { color: var(--itb-c-primary); background: var(--itb-c-primary-light); }
.itb-tag-btn.itb-is-active { background: var(--itb-c-primary); color: #fff; box-shadow: 0 6px 16px rgba(43, 92, 255, .22); }

.itb-marquee { position: relative; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.itb-marquee__track { display: flex; gap: 16px; width: max-content; animation: marquee 34s linear infinite; }
.itb-marquee:hover .itb-marquee__track { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.itb-client-card {
  display: flex; align-items: center; gap: 14px; flex: none;
  min-width: 232px; padding: 18px 22px;
  border: 1px solid var(--itb-c-line); border-radius: var(--itb-r-md); background: #fff;
  transition: opacity .3s, filter .3s, border-color .2s, transform .2s;
}
.itb-client-card:hover { border-color: var(--itb-c-primary); transform: translateY(-2px); }
.itb-client-card.itb-is-dim { opacity: .25; filter: grayscale(1); }
.itb-client-card__logo {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  display: grid; place-items: center; font-size: 15px; font-weight: 800;
  background: var(--itb-c-bg-alt); color: var(--itb-c-text); letter-spacing: -0.05em;
}
.itb-client-card__name { font-size: 15px; font-weight: 700; line-height: 1.3; }
.itb-client-card__cat { font-size: 12px; color: var(--itb-c-text-mute); }

/* --------------------------------------------------------------------------
   8. Issue cards
   -------------------------------------------------------------------------- */
.itb-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.itb-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.itb-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.itb-issue-card {
  padding: 34px 30px; border-radius: var(--itb-r-lg); background: #fff;
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-xs);
  transition: transform .3s var(--itb-ease), box-shadow .3s var(--itb-ease), border-color .3s;
}
.itb-issue-card:hover { transform: translateY(-6px); box-shadow: var(--itb-sh-md); border-color: #cfd8ff; }
.itb-issue-card__no { font-size: 12px; font-weight: 800; letter-spacing: .1em; color: var(--itb-c-text-mute); }
.itb-issue-card__title { margin: 12px 0 10px; font-size: 20px; font-weight: 700; letter-spacing: -0.03em; }
.itb-issue-card__desc { font-size: 15px; line-height: 1.7; color: var(--itb-c-text-sub); }

.itb-solution-bar {
  margin-top: 32px; padding: 28px 34px; border-radius: var(--itb-r-lg);
  background: linear-gradient(100deg, var(--itb-c-primary) 0%, #4a6cff 55%, #6a5bff 100%);
  color: #fff; display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  box-shadow: var(--itb-sh-primary);
}
.itb-solution-bar b { font-size: 19px; font-weight: 700; letter-spacing: -0.03em; }
.itb-solution-bar p { font-size: 15px; opacity: .88; margin-top: 4px; }
.itb-solution-bar .itb-btn { margin-left: auto; }

/* --------------------------------------------------------------------------
   9. Feature cards
   -------------------------------------------------------------------------- */
.itb-feature-card {
  position: relative; padding: 36px 28px; border-radius: var(--itb-r-lg);
  background: #fff; border: 1px solid var(--itb-c-line); overflow: hidden;
  transition: transform .3s var(--itb-ease), box-shadow .3s var(--itb-ease);
}
.itb-feature-card::before {
  content: ''; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--itb-c-primary), var(--itb-c-accent));
  transform: scaleX(0); transform-origin: left; transition: transform .4s var(--itb-ease);
}
.itb-feature-card:hover { transform: translateY(-6px); box-shadow: var(--itb-sh-md); }
.itb-feature-card:hover::before { transform: scaleX(1); }
.itb-feature-card__ico {
  width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center;
  background: var(--itb-c-primary-light); color: var(--itb-c-primary); margin-bottom: 20px;
}
.itb-feature-card__title { font-size: 19px; font-weight: 700; letter-spacing: -0.03em; margin-bottom: 10px; }
.itb-feature-card__desc { font-size: 15px; line-height: 1.7; color: var(--itb-c-text-sub); }

/* --------------------------------------------------------------------------
   10. Service tabs
   -------------------------------------------------------------------------- */
.itb-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 44px; }
.itb-tab-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--itb-r-full); font-size: 15px; font-weight: 700;
  color: var(--itb-c-text-sub); background: #fff; border: 1px solid var(--itb-c-line);
  transition: all .22s var(--itb-ease);
}
.itb-tab-btn:hover { color: var(--itb-c-primary); border-color: var(--itb-c-primary); }
.itb-tab-btn.itb-is-active { background: var(--itb-c-text); color: #fff; border-color: var(--itb-c-text); }
.itb-tab-btn__badge { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: var(--itb-r-full); background: var(--itb-c-primary-light); color: var(--itb-c-primary); }
.itb-tab-btn.itb-is-active .itb-tab-btn__badge { background: rgba(255, 255, 255, .18); color: #fff; }

.itb-tab-panel { display: none; }
.itb-tab-panel.itb-is-active { display: block; animation: fadeUp .45s var(--itb-ease); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.itb-panel-box {
  display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 48px; align-items: center;
  padding: 44px; border-radius: var(--itb-r-xl);
  background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-sm);
}
.itb-panel-box__title { font-size: 28px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.35; }
.itb-panel-box__desc { margin-top: 14px; font-size: 16px; line-height: 1.75; color: var(--itb-c-text-sub); }
.itb-panel-list { margin-top: 24px; display: grid; gap: 12px; }
.itb-panel-list li { display: flex; gap: 10px; font-size: 15px; color: var(--itb-c-text-sub); }
.itb-panel-list li svg { flex: none; margin-top: 3px; color: var(--itb-c-accent); }
.itb-panel-list li b { color: var(--itb-c-text); font-weight: 700; }

.itb-spec-table { font-size: 14px; border-radius: var(--itb-r-md); overflow: hidden; border: 1px solid var(--itb-c-line); }
.itb-spec-table th, .itb-spec-table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--itb-c-line-soft); }
.itb-spec-table thead th { background: var(--itb-c-bg-alt); font-weight: 700; font-size: 13px; color: var(--itb-c-text-sub); }
.itb-spec-table tbody th { font-weight: 700; width: 34%; color: var(--itb-c-text); background: #fcfdff; }
.itb-spec-table td { color: var(--itb-c-text-sub); }
.itb-spec-table tr:last-child th, .itb-spec-table tr:last-child td { border-bottom: 0; }
.itb-spec-table .itb-hi { color: var(--itb-c-primary); font-weight: 700; }

/* --------------------------------------------------------------------------
   11. Failover flow
   -------------------------------------------------------------------------- */
.itb-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; position: relative; }
.itb-flow-step {
  position: relative; padding: 32px 26px; border-radius: var(--itb-r-lg);
  background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-xs);
}
.itb-flow-step__no {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--itb-c-text); color: #fff; font-size: 14px; font-weight: 800; margin-bottom: 18px;
}
.itb-flow-step:last-child .itb-flow-step__no { background: var(--itb-c-primary); }
.itb-flow-step__title { font-size: 18px; font-weight: 700; letter-spacing: -0.03em; }
.itb-flow-step__desc { margin-top: 8px; font-size: 14px; color: var(--itb-c-text-sub); }
.itb-flow-step__ch { margin-top: 16px; display: inline-flex; padding: 5px 12px; border-radius: var(--itb-r-full); background: var(--itb-c-bg-alt); font-size: 12px; font-weight: 700; color: var(--itb-c-text-sub); }
.itb-flow-step::after {
  content: ''; position: absolute; top: 50%; right: -14px; z-index: 2;
  width: 8px; height: 8px; border-top: 2px solid var(--itb-c-primary); border-right: 2px solid var(--itb-c-primary);
  transform: translateY(-50%) rotate(45deg);
}
.itb-flow-step:last-child::after { display: none; }

.itb-result-bar {
  margin-top: 26px; padding: 26px 32px; border-radius: var(--itb-r-lg);
  background: var(--itb-c-accent-light); border: 1px solid #b8f0e6;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.itb-result-bar__badge { font-size: 26px; font-weight: 800; color: #00937f; letter-spacing: -0.04em; }
.itb-result-bar p { font-size: 15px; color: #10695c; font-weight: 600; }

/* --------------------------------------------------------------------------
   12. Video section
   -------------------------------------------------------------------------- */
.itb-video-sec {
  padding: 120px 0; color: #fff; position: relative; overflow: hidden;
  background: linear-gradient(150deg, #0d1424 0%, #141d38 48%, #16234d 100%);
}
.itb-video-sec::before {
  content: ''; position: absolute; width: 620px; height: 620px; border-radius: 50%;
  top: -240px; right: -180px; background: radial-gradient(circle, rgba(43,92,255,.4), transparent 68%);
}
.itb-video-sec::after {
  content: ''; position: absolute; width: 520px; height: 520px; border-radius: 50%;
  bottom: -220px; left: -160px; background: radial-gradient(circle, rgba(0,194,168,.26), transparent 68%);
}
.itb-video-sec .itb-container { position: relative; z-index: 1; }
.itb-video-sec .itb-eyebrow { background: rgba(255, 255, 255, .1); color: #9fb8ff; }
.itb-video-sec .itb-sec-title { color: #fff; }
.itb-video-sec .itb-sec-desc { color: rgba(255, 255, 255, .68); }

.itb-video-frame {
  position: relative; margin-top: 52px; border-radius: var(--itb-r-xl); overflow: hidden;
  aspect-ratio: 16 / 9; cursor: pointer;
  border: 1px solid rgba(255, 255, 255, .14);
  background: linear-gradient(135deg, #1b2547 0%, #23306a 50%, #142a4f 100%);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .45);
}
.itb-video-frame__grid {
  position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px;
}
.itb-video-frame__inner { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; }
.itb-video-frame__label { font-size: 13px; font-weight: 700; letter-spacing: .12em; color: rgba(255,255,255,.5); text-transform: uppercase; }
.itb-video-frame__title { margin-top: 14px; font-size: clamp(20px, 2.6vw, 30px); font-weight: 800; letter-spacing: -0.035em; }
.itb-video-frame__meta { margin-top: 10px; font-size: 14px; color: rgba(255,255,255,.55); }

.itb-play-btn {
  position: relative;
  width: 88px; height: 88px; border-radius: 50%; margin: 0 auto 6px;
  display: grid; place-items: center; color: var(--itb-c-text);
  background: #fff; box-shadow: 0 12px 40px rgba(0, 0, 0, .35);
  transition: transform .3s var(--itb-ease);
}
.itb-video-frame:hover .itb-play-btn { transform: scale(1.08); }
.itb-play-btn::before {
  content: ''; position: absolute; width: 88px; height: 88px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .5); animation: ripple 2.4s ease-out infinite;
}
@keyframes ripple {
  0% { transform: scale(1); opacity: .8; }
  100% { transform: scale(1.8); opacity: 0; }
}

.itb-video-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.itb-video-point { padding: 22px 24px; border-radius: var(--itb-r-md); background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); }
.itb-video-point b { display: block; font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.itb-video-point span { font-size: 14px; color: rgba(255, 255, 255, .6); line-height: 1.6; }

/* Modal */
.itb-modal {
  position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; padding: 24px;
  background: rgba(6, 10, 20, .82); backdrop-filter: blur(6px);
  opacity: 0; visibility: hidden; transition: opacity .3s var(--itb-ease), visibility .3s;
}
.itb-modal.itb-is-open { opacity: 1; visibility: visible; }
.itb-modal__dialog {
  width: 100%; max-width: 980px; border-radius: var(--itb-r-lg); overflow: hidden;
  background: #000; aspect-ratio: 16 / 9; position: relative;
  transform: scale(.96); transition: transform .3s var(--itb-ease);
}
.itb-modal.itb-is-open .itb-modal__dialog { transform: none; }
.itb-modal__dialog iframe, .itb-modal__dialog video { width: 100%; height: 100%; border: 0; display: block; }
.itb-modal__placeholder {
  position: absolute; inset: 0; display: grid; place-content: center; gap: 10px; text-align: center;
  color: rgba(255, 255, 255, .78); background: #10182c; padding: 24px; font-size: 15px;
}
.itb-modal__placeholder b { font-size: 18px; color: #fff; }
.itb-modal__placeholder code { font-size: 13px; color: #8fb0ff; background: rgba(255,255,255,.07); padding: 4px 10px; border-radius: 6px; }
.itb-modal__close {
  position: absolute; top: -48px; right: 0; width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255, 255, 255, .14); color: #fff; display: grid; place-items: center;
  transition: background .2s;
}
.itb-modal__close:hover { background: rgba(255, 255, 255, .28); }

/* --------------------------------------------------------------------------
   13. Usage types
   -------------------------------------------------------------------------- */
.itb-type-card {
  padding: 36px 30px; border-radius: var(--itb-r-lg); background: #fff;
  border: 1px solid var(--itb-c-line); transition: transform .3s var(--itb-ease), box-shadow .3s var(--itb-ease);
}
.itb-type-card:hover { transform: translateY(-6px); box-shadow: var(--itb-sh-md); }
.itb-type-card__no { font-size: 13px; font-weight: 800; color: var(--itb-c-primary); letter-spacing: .08em; }
.itb-type-card__title { margin: 10px 0 12px; font-size: 22px; font-weight: 800; letter-spacing: -0.035em; }
.itb-type-card__desc { font-size: 15px; line-height: 1.75; color: var(--itb-c-text-sub); }
.itb-type-card__tag { display: inline-flex; margin-top: 20px; padding: 6px 14px; border-radius: var(--itb-r-full); background: var(--itb-c-bg-alt); font-size: 13px; font-weight: 600; color: var(--itb-c-text-sub); }

/* --------------------------------------------------------------------------
   14. Onboarding steps
   -------------------------------------------------------------------------- */
.itb-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.itb-step {
  position: relative; padding: 28px 20px; text-align: center;
  border-radius: var(--itb-r-md); background: #fff; border: 1px solid var(--itb-c-line);
  transition: border-color .25s, transform .25s var(--itb-ease);
}
.itb-step:hover { border-color: var(--itb-c-primary); transform: translateY(-4px); }
.itb-step__no {
  width: 40px; height: 40px; margin: 0 auto 14px; border-radius: 50%;
  display: grid; place-items: center; font-size: 15px; font-weight: 800;
  background: var(--itb-c-primary-light); color: var(--itb-c-primary);
}
.itb-step__title { font-size: 16px; font-weight: 700; }
.itb-step__desc { margin-top: 6px; font-size: 13px; color: var(--itb-c-text-sub); line-height: 1.6; }

/* --------------------------------------------------------------------------
   15. Split blocks (franchise / election)
   -------------------------------------------------------------------------- */
.itb-split { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.itb-split-card {
  padding: 44px 40px; border-radius: var(--itb-r-xl); border: 1px solid var(--itb-c-line); background: #fff;
  position: relative; overflow: hidden;
}
.itb-split-card--tint { background: linear-gradient(160deg, var(--itb-c-primary-soft) 0%, #fff 62%); }
.itb-split-card__label { display: inline-flex; padding: 6px 14px; border-radius: var(--itb-r-full); font-size: 12px; font-weight: 800; letter-spacing: .06em; background: var(--itb-c-text); color: #fff; }
.itb-split-card__title { margin: 18px 0 12px; font-size: 26px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.35; }
.itb-split-card__desc { font-size: 15px; line-height: 1.75; color: var(--itb-c-text-sub); }
.itb-check-list { margin-top: 24px; display: grid; gap: 12px; }
.itb-check-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--itb-c-text-sub); }
.itb-check-list li svg { flex: none; margin-top: 3px; color: var(--itb-c-primary); }

/* --------------------------------------------------------------------------
   16. Compare table
   -------------------------------------------------------------------------- */
.itb-compare {
  border-radius: var(--itb-r-lg); overflow: hidden; border: 1px solid var(--itb-c-line);
  background: #fff; box-shadow: var(--itb-sh-sm);
}
.itb-compare th, .itb-compare td { padding: 18px 24px; border-bottom: 1px solid var(--itb-c-line-soft); font-size: 15px; }
.itb-compare thead th { background: var(--itb-c-text); color: #fff; font-weight: 700; font-size: 14px; }
.itb-compare thead th:last-child { background: var(--itb-c-primary); text-align: center; width: 180px; }
.itb-compare tbody th { text-align: left; font-weight: 600; color: var(--itb-c-text); }
.itb-compare tbody td { text-align: center; color: var(--itb-c-primary); font-weight: 800; background: var(--itb-c-primary-soft); }
.itb-compare tbody tr:last-child th, .itb-compare tbody tr:last-child td { border-bottom: 0; }

/* --------------------------------------------------------------------------
   17. Pricing
   -------------------------------------------------------------------------- */
.itb-price-card {
  padding: 34px 30px; border-radius: var(--itb-r-lg); background: #fff; border: 1px solid var(--itb-c-line);
}
.itb-price-card__ico { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: var(--itb-c-accent-light); color: #00937f; margin-bottom: 18px; }
.itb-price-card__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.itb-price-card__desc { font-size: 15px; line-height: 1.7; color: var(--itb-c-text-sub); }

/* --------------------------------------------------------------------------
   18. CTA + contact
   -------------------------------------------------------------------------- */
.itb-cta-sec { padding: 110px 0; background: var(--itb-c-bg-alt); border-top: 1px solid var(--itb-c-line-soft); }
.itb-cta-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px); gap: 56px; align-items: start; }
.itb-cta-info__title { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; line-height: 1.3; letter-spacing: -0.04em; }
.itb-cta-info__desc { margin-top: 18px; font-size: 17px; line-height: 1.75; color: var(--itb-c-text-sub); }

.itb-cs-box { margin-top: 32px; padding: 26px 28px; border-radius: var(--itb-r-lg); background: #fff; border: 1px solid var(--itb-c-line); }
.itb-cs-box__label { font-size: 13px; font-weight: 700; color: var(--itb-c-text-mute); }
.itb-cs-box__tel { display: block; margin: 4px 0 10px; font-size: 32px; font-weight: 800; letter-spacing: -0.045em; color: var(--itb-c-primary); }
.itb-cs-box__time { font-size: 14px; color: var(--itb-c-text-sub); line-height: 1.7; }

.itb-form-card { padding: 36px 32px; border-radius: var(--itb-r-xl); background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md); }
.itb-form-card__title { font-size: 20px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 22px; }
.itb-field { margin-bottom: 16px; }
.itb-field label { display: block; font-size: 13px; font-weight: 700; color: var(--itb-c-text-sub); margin-bottom: 7px; }
.itb-field input, .itb-field select, .itb-field textarea {
  width: 100%; padding: 13px 15px; border-radius: var(--itb-r-sm);
  border: 1px solid var(--itb-c-line); background: #fcfdff; font-size: 15px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.itb-field textarea { min-height: 96px; resize: vertical; }
.itb-field input:focus, .itb-field select:focus, .itb-field textarea:focus {
  outline: 0; border-color: var(--itb-c-primary); background: #fff;
  box-shadow: 0 0 0 3px rgba(43, 92, 255, .12);
}
.itb-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.itb-agree { display: flex; gap: 9px; align-items: flex-start; font-size: 13px; color: var(--itb-c-text-sub); margin: 6px 0 20px; }
.itb-agree input { width: 16px; height: 16px; margin-top: 2px; flex: none; accent-color: var(--itb-c-primary); }
.itb-agree a { text-decoration: underline; }
.itb-form-msg { margin-top: 14px; font-size: 14px; font-weight: 600; text-align: center; color: var(--itb-c-primary); min-height: 20px; }

/* --------------------------------------------------------------------------
   19. Footer
   -------------------------------------------------------------------------- */
.itb-footer { background: var(--itb-c-bg-deep); color: rgba(255, 255, 255, .62); padding: 0 0 40px; font-size: 14px; }

/* 푸터 상단 회사/정책 메뉴 바 */
.itb-footer-policy { border-bottom: 1px solid rgba(255, 255, 255, .1); margin-bottom: 56px; }
.itb-footer-policy ul {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  min-height: 58px; gap: 0 2px;
}
.itb-footer-policy li { position: relative; }
.itb-footer-policy li + li::before {
  content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 1px; height: 11px; background: rgba(255, 255, 255, .18);
}
.itb-footer-policy a {
  display: block; padding: 10px 20px;
  font-size: 14px; font-weight: 600; color: rgba(255, 255, 255, .72);
  transition: color .2s;
}
.itb-footer-policy a:hover { color: #fff; }
.itb-footer__top { display: grid; grid-template-columns: minmax(0, 1.2fr) repeat(3, minmax(0, 1fr)); gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.itb-footer .itb-logo { color: #fff; margin-bottom: 16px; }
.itb-footer__desc { line-height: 1.75; max-width: 320px; font-size: 14px; }
.itb-sns { display: flex; align-items: center; gap: 10px; margin-top: 26px; }
.itb-sns__link {
  display: block; width: 34px; height: 34px;
  border-radius: 50%; overflow: hidden; /* ico_italkbiz_tistory_sns.jpg 흰 배경 모서리 정리용 */
  transition: transform .25s var(--itb-ease), box-shadow .25s var(--itb-ease), opacity .2s;
  opacity: .92;
}
.itb-sns__link img { width: 100%; height: 100%; object-fit: cover; display: block; }
.itb-sns__link:hover { opacity: 1; transform: translateY(-3px); box-shadow: 0 8px 18px rgba(0, 0, 0, .38); }

.itb-footer__col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.itb-footer__col li + li { margin-top: 10px; }
.itb-footer__col a:hover { color: #fff; }
.itb-footer__bottom { padding-top: 28px; display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; }
.itb-footer__biz { font-size: 13px; line-height: 1.8; color: rgba(255, 255, 255, .5); }
.itb-biz-link {
  display: inline-flex; align-items: center; gap: 5px; margin-left: 8px;
  padding: 4px 11px; border-radius: var(--itb-r-full);
  border: 1px solid rgba(255, 255, 255, .2); background: rgba(255, 255, 255, .06);
  font-size: 12px; font-weight: 600; color: rgba(255, 255, 255, .78);
  vertical-align: middle; transition: background .2s, color .2s, border-color .2s;
}
.itb-biz-link:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .38); color: #fff; }

.itb-footer__certs { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.itb-cert-chip { padding: 7px 14px; border-radius: var(--itb-r-full); background: rgba(255, 255, 255, .08); font-size: 12px; font-weight: 600; color: rgba(255, 255, 255, .8); }
.itb-footer__copy { width: 100%; padding-top: 20px; font-size: 13px; color: rgba(255, 255, 255, .4); }

/* --------------------------------------------------------------------------
   인증서 레이어 팝업
   여닫기는 기존 방식($('#layerpopCert').show()/hide())을 그대로 사용합니다.
   → 최상위 요소의 인라인 display 만 토글되므로 클래스에는 display 를 두지 않습니다.
   -------------------------------------------------------------------------- */
.itb-certpop { position: fixed; inset: 0; z-index: 10000; }
.itb-certpop__dim { position: absolute; inset: 0; background: rgba(6, 10, 20, .62); }
.itb-certpop__box {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(92vw, 720px);
  padding: 14px; box-sizing: border-box;
  background: #fff; border-radius: var(--itb-r-md); box-shadow: var(--itb-sh-lg);
}
.itb-certpop__body { max-height: 82vh; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.itb-certpop__body img { width: 100%; height: auto; }
.itb-certpop__close {
  position: absolute; top: 8px; right: 8px; z-index: 1;
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(13, 20, 36, .55); color: #fff;
  display: grid; place-items: center;
  transition: background .2s;
}
.itb-certpop__close:hover { background: rgba(13, 20, 36, .8); }

/* --------------------------------------------------------------------------
   반응형 노출 유틸
     .itb-hide-mobile : PC 에만 노출 (768px 이하 숨김)  ← 미디어쿼리에서 처리
     .itb-only-mobile : 모바일에만 노출 (768px 이하에서만 표시)
   -------------------------------------------------------------------------- */
.itb-only-mobile { display: none; }

/* --------------------------------------------------------------------------
   모바일 하단 고정 CTA (768px 이하에서만 노출)
   PC 에서는 숨겨지므로 공통 fragment 에 넣어두어도 무방합니다.
   -------------------------------------------------------------------------- */
.itb-bottom-cta,
.itb-bottom-cta-spacer { display: none; }

/* Float buttons */
.itb-to-top {
  position: fixed; right: 28px; bottom: 28px; z-index: 800;
  width: 50px; height: 50px; border-radius: 50%; background: #fff; color: var(--itb-c-text);
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .3s var(--itb-ease);
}
.itb-to-top.itb-is-show { opacity: 1; visibility: visible; transform: none; }
.itb-to-top:hover { background: var(--itb-c-primary); color: #fff; border-color: var(--itb-c-primary); }

/* --------------------------------------------------------------------------
   20. Scroll reveal
   -------------------------------------------------------------------------- */
.itb-reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--itb-ease), transform .7s var(--itb-ease); }
.itb-reveal.itb-is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .itb-reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   21. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1440px) {
  .itb-side-nav { right: 14px; }
}

@media (max-width: 1280px) {
  .itb-gnb__link { padding: 10px 11px; font-size: 15px; }
  .itb-header__inner { gap: 20px; }
  .itb-header__util .itb-txt-link { display: none; }
  .itb-side-nav { display: none; }
}

@media (max-width: 1024px) {
  .itb-header__util .itb-btn--primary, .itb-send-drop { display: none; }
  .itb-gnb, .itb-mega { display: none; }
  .itb-nav-toggle { display: block; margin-left: auto; }

  .itb-hero { padding: calc(var(--itb-header-h) + 64px) 0 80px; }
  .itb-hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .itb-hero__desc { max-width: none; }
  .itb-hero__visual { min-height: auto; }
  .itb-float-card--a { left: 4%; }
  .itb-float-card--b { right: 4%; }

  .itb-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .itb-steps { grid-template-columns: repeat(3, 1fr); }
  .itb-panel-box { grid-template-columns: 1fr; gap: 32px; padding: 32px; }
  .itb-split { grid-template-columns: 1fr; }
  .itb-cta-grid { grid-template-columns: 1fr; gap: 40px; }
  .itb-footer__top { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .itb-section, .itb-cta-sec, .itb-video-sec { padding: 76px 0; }
  .itb-section--tight { padding: 60px 0; }
  .itb-container { padding: 0 20px; }

  .itb-hero-stats { grid-template-columns: 1fr; gap: 20px; padding: 26px 24px; margin-top: 56px; }
  .itb-hero-stats__item + .itb-hero-stats__item::before { display: none; }
  .itb-hero-stats__item + .itb-hero-stats__item { padding-top: 20px; border-top: 1px solid var(--itb-c-line); }

  .itb-grid-3, .itb-grid-4, .itb-grid-2, .itb-flow, .itb-video-points { grid-template-columns: 1fr; }
  .itb-flow-step::after { top: auto; bottom: -14px; right: 50%; transform: translateX(50%) rotate(135deg); }
  .itb-steps { grid-template-columns: repeat(2, 1fr); }

  .itb-solution-bar { flex-direction: column; align-items: flex-start; padding: 24px; }
  .itb-solution-bar .itb-btn { margin-left: 0; width: 100%; }

  .itb-split-card { padding: 32px 24px; }
  .itb-form-card { padding: 28px 22px; }
  .itb-field-row { grid-template-columns: 1fr; }

  .itb-compare th, .itb-compare td { padding: 14px 16px; font-size: 14px; }
  .itb-compare thead th:last-child { width: 90px; }

  .itb-modal__close { top: auto; bottom: -50px; right: 50%; transform: translateX(50%); }
  /* PC 전용 항목 숨김 (푸터 정책 링크 3개 · 서비스/이용안내/고객지원 컬럼) */
  .itb-hide-mobile { display: none !important; }
  /* 모바일 전용 항목 노출 (푸터 상담문의 · 후불결제 안내) */
  .itb-only-mobile { display: block; }

  /* --- 하단 고정 CTA --- */
  .itb-bottom-cta {
    display: block;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 850;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-top: 1px solid var(--itb-c-line);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .itb-bottom-cta__inner {
    max-width: 600px; margin: 0 auto; height: 72px;
    display: flex; align-items: center; gap: 8px; padding: 0 20px;
  }
  .itb-bottom-cta .itb-btn { flex: 1; height: 46px; padding: 0 12px; font-size: 14px; }
  .itb-bottom-cta .itb-btn--ghost { flex: 0 0 108px; }

  /* 하단 CTA 에 콘텐츠가 가리지 않도록 푸터 끝에 넣는 여백 */
  .itb-bottom-cta-spacer { display: block; height: calc(72px + env(safe-area-inset-bottom, 0px)); }

  .itb-footer-policy { margin-bottom: 36px; }
  .itb-footer-policy ul { justify-content: flex-start; padding: 12px 0; }
  .itb-footer-policy li + li::before { display: none; }
  .itb-footer-policy a { padding: 8px 14px 8px 0; font-size: 13px; }
  .itb-footer__top { grid-template-columns: 1fr; gap: 32px; }
  .itb-footer__certs { margin-left: 0; }

  /* TOP 버튼 : 하단 고정 CTA 가 있는 레이아웃(mDefault)에서는 그 위로 띄운다.
     ※ 규칙을 두 번 선언하면 뒤엣것이 이겨 CTA 바(z-index 850) 뒤로 가려지므로
        반드시 한 곳에서만 bottom 을 지정할 것. */
  .itb-to-top { right: 16px; bottom: 16px; }
  body:has(.itb-bottom-cta) .itb-to-top {
    bottom: calc(72px + 16px + env(safe-area-inset-bottom, 0px));
  }
}

@media (max-width: 480px) {
  .itb-phone { width: 100%; max-width: 280px; }
  .itb-float-card { padding: 10px 14px; }
  .itb-float-card b { font-size: 14px; }
  .itb-steps { grid-template-columns: 1fr; }
  .itb-btn { width: 100%; }
  .itb-hero__cta .itb-btn { width: 100%; }
}
@charset "utf-8";

/* ==========================================================================
   아이톡비즈 메인페이지 - main.css
   Design tone : Light & Clean B2B SaaS
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand */
  --itb-c-primary: #2b5cff;
  --itb-c-primary-dark: #1a3fd6;
  --itb-c-primary-light: #eaf0ff;
  --itb-c-primary-soft: #f4f7ff;
  --itb-c-accent: #00c2a8;
  --itb-c-accent-light: #e5faf6;
  --itb-c-kakao: #fee500;
  --itb-c-kakao-text: #3c1e1e;

  /* Neutral */
  --itb-c-text: #0d1424;
  --itb-c-text-sub: #4d5670;
  --itb-c-text-mute: #8a92a6;
  --itb-c-line: #e6e9f0;
  --itb-c-line-soft: #f0f2f7;
  --itb-c-bg: #ffffff;
  --itb-c-bg-alt: #f7f9fc;
  --itb-c-bg-deep: #0d1424;

  /* Elevation */
  --itb-sh-xs: 0 1px 2px rgba(13, 20, 36, .05);
  --itb-sh-sm: 0 2px 8px rgba(13, 20, 36, .06);
  --itb-sh-md: 0 8px 24px rgba(13, 20, 36, .08);
  --itb-sh-lg: 0 20px 48px rgba(13, 20, 36, .12);
  --itb-sh-primary: 0 12px 28px rgba(43, 92, 255, .28);

  /* Radius */
  --itb-r-sm: 8px;
  --itb-r-md: 14px;
  --itb-r-lg: 20px;
  --itb-r-xl: 28px;
  --itb-r-full: 999px;

  /* Layout */
  --itb-container: 1200px;
  --itb-header-h: 76px;

  /* Motion */
  --itb-ease: cubic-bezier(.22, .61, .36, 1);
}

/* --------------------------------------------------------------------------
   2. Scoped Reset & Base
   --------------------------------------------------------------------------
   ※ 스코프 단위 = .itb-scope (여러 번 사용 가능한 '클래스')
      공통 header / footer fragment 는 각각 .itb-scope 로 감싸고,
      리뉴얼된 메인 콘텐츠도 별도의 .itb-scope 로 감쌉니다.
      → 서브 페이지의 contents 영역은 스코프 밖이므로 bizmessage.css 그대로 동작.

      <div class="itb-scope">  header   </div>   ← 공통 fragment
      contents                                   ← 서브페이지는 스코프 없음
      <div class="itb-scope">  footer   </div>   ← 공통 fragment

   ※ 박스모델·엘리먼트 리셋은 :where() 로 감싸 명시도를 0 으로 유지합니다.
      (기존 전역 리셋과 동일한 강도라 .itb- 컴포넌트 룰을 덮어쓰지 않음)
   -------------------------------------------------------------------------- */
/* ※ bizmessage.css 최상단의
     * { margin:0; padding:0; font-family:'맑은고딕', ... }
   룰이 모든 요소에 font-family 를 '직접' 지정해 상속을 끊어버립니다.
   따라서 래퍼 하나가 아니라 하위 전체에 폰트를 명시해야 합니다.
   .itb-scope * (0,1,0) > * (0,0,0) 이므로 확실히 이깁니다. */
.itb-scope,
.itb-scope * {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont,
               'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
}

.itb-scope {
  font-size: 16px;
  line-height: 1.6;
  color: var(--itb-c-text);
  letter-spacing: -0.02em;
  text-align: left;
  min-width: 0;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

/* 박스모델 리셋 : 명시도 (0,0,0) */
:where(.itb-scope), :where(.itb-scope) *,
:where(.itb-scope) *::before, :where(.itb-scope) *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* 엘리먼트 리셋 : 명시도 (0,0,1) — 기존 전역 리셋과 동일 강도 */
:where(.itb-scope) img { max-width: 100%; display: block; border: 0; }
:where(.itb-scope) a { color: inherit; text-decoration: none; }
:where(.itb-scope) ul, :where(.itb-scope) ol, :where(.itb-scope) li { list-style: none; }
:where(.itb-scope) button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
:where(.itb-scope) input, :where(.itb-scope) textarea, :where(.itb-scope) select { font: inherit; color: inherit; }
:where(.itb-scope) table { border-collapse: collapse; width: 100%; }
:where(.itb-scope) :focus-visible { outline: 2px solid var(--itb-c-primary); outline-offset: 3px; border-radius: 4px; }

/* --- bizmessage.css 의 전역 엘리먼트 룰 역간섭 차단 ---
   아래 3개만 실제 충돌 항목이라 최소한으로 방어합니다.
   컴포넌트가 건드리지 않는 속성이므로 (0,1,1) 로 확실히 눌러 둡니다.

   · bizmessage : table { table-layout:fixed; overflow:hidden; text-overflow:ellipsis }
   · bizmessage : tr,td  { overflow:hidden; text-overflow:ellipsis }
   · bizmessage : td     { height:27px }
   -------------------------------------------------------------------------- */
.itb-scope table { table-layout: auto; overflow: visible; text-overflow: clip; }
.itb-scope tr, .itb-scope td, .itb-scope th { overflow: visible; text-overflow: clip; height: auto; }

/* --- 고정 헤더 높이 보정 ---------------------------------------------------
   헤더가 position:fixed 라 뒤따르는 contents 가 헤더에 가려집니다.
   공통 header fragment 맨 끝에 아래 스페이서 한 줄을 넣어두면
   모든 서브 페이지가 자동으로 헤더 높이만큼 내려갑니다.

     <div class="itb-header-spacer"></div>

   메인 페이지 히어로는 배경 그라데이션이 헤더 뒤까지 이어져야 하므로
   음수 마진으로 스페이서를 상쇄합니다(.itb-hero 규칙 참고).
   스페이서를 쓸 수 없는 구조라면 서브 페이지 contents 최상위에
   class="itb-header-offset" 를 직접 부여해도 동일한 결과가 됩니다.
   -------------------------------------------------------------------------- */
.itb-header-spacer { height: var(--itb-header-h); }
.itb-header-offset { padding-top: var(--itb-header-h); }

/* 모바일 메뉴 오픈 시 스크롤 잠금 (body 에 거는 유일한 예외) */
body.itb-is-locked { overflow: hidden; }

/* 스크린리더 전용 텍스트 (bizmessage 의 caption{width:0;text-indent:-9999em} 방어 포함) */
.itb-sr-only {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; overflow: hidden !important;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
  text-indent: 0; font-size: 1px;
}

/* --------------------------------------------------------------------------
   3. Layout Utilities
   -------------------------------------------------------------------------- */
.itb-container { width: 100%; max-width: var(--itb-container); margin: 0 auto; padding: 0 24px; }

.itb-section { padding: 120px 0; position: relative; }
.itb-section--alt { background: var(--itb-c-bg-alt); }
.itb-section--tight { padding: 88px 0; }

.itb-sec-head { text-align: center; margin-bottom: 60px; }
.itb-sec-head--left { text-align: left; }

.itb-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .08em;
  color: var(--itb-c-primary); text-transform: uppercase;
  padding: 7px 14px; border-radius: var(--itb-r-full);
  background: var(--itb-c-primary-light); margin-bottom: 20px;
}
.itb-eyebrow::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }

.itb-sec-title {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800; line-height: 1.3; letter-spacing: -0.035em;
}
.itb-sec-title em { font-style: normal; color: var(--itb-c-primary); }

.itb-sec-desc {
  margin-top: 18px; font-size: 17px; line-height: 1.75;
  color: var(--itb-c-text-sub); max-width: 720px;
}
.itb-sec-head:not(.itb-sec-head--left) .itb-sec-desc { margin-left: auto; margin-right: auto; }

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.itb-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 52px; padding: 0 28px; border-radius: var(--itb-r-full);
  font-size: 16px; font-weight: 700; white-space: nowrap;
  transition: transform .25s var(--itb-ease), box-shadow .25s var(--itb-ease), background .2s, color .2s, border-color .2s;
}
.itb-btn:hover { transform: translateY(-2px); }
.itb-btn--sm { height: 42px; padding: 0 20px; font-size: 14px; }
.itb-btn--lg { height: 60px; padding: 0 36px; font-size: 17px; }
.itb-btn--block { width: 100%; }

.itb-btn--primary { background: var(--itb-c-primary); color: #fff; box-shadow: var(--itb-sh-primary); }
.itb-btn--primary:hover { background: var(--itb-c-primary-dark); }

.itb-btn--ghost { background: #fff; color: var(--itb-c-text); border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-xs); }
.itb-btn--ghost:hover { border-color: var(--itb-c-primary); color: var(--itb-c-primary); }

.itb-btn--line { background: transparent; color: var(--itb-c-primary); border: 1.5px solid var(--itb-c-primary); }
.itb-btn--line:hover { background: var(--itb-c-primary); color: #fff; }

.itb-btn--dark { background: var(--itb-c-text); color: #fff; }
.itb-btn--dark:hover { background: #000; }

.itb-btn .itb-ico-arrow { transition: transform .25s var(--itb-ease); }
.itb-btn:hover .itb-ico-arrow { transform: translateX(3px); }

/* --------------------------------------------------------------------------
   5. Header
   -------------------------------------------------------------------------- */
.itb-header {
  position: fixed; inset: 0 0 auto 0; z-index: 900;
  height: var(--itb-header-h);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.itb-header.itb-is-scrolled { border-bottom-color: var(--itb-c-line); box-shadow: var(--itb-sh-xs); }
.itb-header__inner { display: flex; align-items: center; gap: 40px; height: 100%; }

.itb-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 21px; letter-spacing: -0.045em; }
.itb-logo__mark {
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--itb-c-primary) 0%, #6b8bff 100%);
  color: #fff; display: grid; place-items: center;
  font-size: 15px; font-weight: 800; letter-spacing: -0.06em;
  box-shadow: 0 4px 12px rgba(43, 92, 255, .3);
}
.itb-logo__mark span { transform: translateY(-1px); }

.itb-gnb { margin-right: auto; height: 100%; }
.itb-gnb__list { display: flex; align-items: center; gap: 2px; height: 100%; }
.itb-gnb__item { height: 100%; display: flex; align-items: center; }
.itb-gnb__link {
  position: relative; display: block; padding: 10px 12px; border-radius: var(--itb-r-sm);
  font-size: 16px; font-weight: 600; color: var(--itb-c-text-sub); white-space: nowrap;
  transition: color .2s, background .2s;
}
.itb-gnb__link::after {
  content: ''; position: absolute; left: 16px; right: 16px; bottom: -2px; height: 2px;
  background: var(--itb-c-primary); border-radius: 2px;
  transform: scaleX(0); transform-origin: center; transition: transform .28s var(--itb-ease);
}
.itb-gnb__link:hover, .itb-gnb__item.itb-is-active .itb-gnb__link { color: var(--itb-c-primary); }
.itb-gnb__item.itb-is-active .itb-gnb__link::after { transform: scaleX(1); }

.itb-header__util { display: flex; align-items: center; gap: 4px; }

/* --- 메가 드롭다운 --- */
.itb-mega {
  position: absolute; left: 0; right: 0; top: 100%;
  background: #fff; border-top: 1px solid var(--itb-c-line);
  box-shadow: 0 24px 48px rgba(13, 20, 36, .1);
  overflow: hidden; max-height: 0;
  transition: max-height .38s var(--itb-ease), opacity .25s var(--itb-ease);
  opacity: 0;
}
.itb-mega.itb-is-open { max-height: 520px; opacity: 1; }
.itb-mega .itb-container { display: none; }
.itb-mega.itb-is-open .itb-container { display: block; }

.itb-mega__panel { display: none; grid-template-columns: minmax(0, 280px) minmax(0, 1fr); gap: 48px; padding: 40px 0 44px; }
.itb-mega__panel.itb-is-active { display: grid; animation: megaIn .35s var(--itb-ease); }
@keyframes megaIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

.itb-mega__intro { padding-right: 40px; border-right: 1px solid var(--itb-c-line-soft); }
.itb-mega__badge {
  display: inline-flex; padding: 5px 12px; border-radius: var(--itb-r-full);
  background: var(--itb-c-primary-light); color: var(--itb-c-primary);
  font-size: 11px; font-weight: 800; letter-spacing: .1em;
}
.itb-mega__intro h3 { margin: 14px 0 10px; font-size: 22px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.35; }
.itb-mega__intro p { font-size: 14px; line-height: 1.7; color: var(--itb-c-text-sub); }
.itb-mega__more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 18px;
  font-size: 14px; font-weight: 700; color: var(--itb-c-primary);
}
.itb-mega__more:hover { text-decoration: underline; }

/* ※ repeat(auto-fit, minmax(0,1fr)) 는 최소 트랙이 0 이라 트랙이 1개만 생성됩니다.
      메뉴 컬럼 수가 패널마다 다르므로(1~4개) flex 로 균등 분할합니다. */
.itb-mega__cols { display: flex; align-items: flex-start; gap: 32px; }
.itb-mega__col { flex: 1 1 0; min-width: 0; max-width: 300px; }
.itb-mega__col h4 {
  font-size: 13px; font-weight: 800; color: var(--itb-c-text-mute);
  letter-spacing: .02em; padding-bottom: 10px; margin-bottom: 12px;
  border-bottom: 1px solid var(--itb-c-line-soft);
}
.itb-mega__col h4 + ul + h4 { margin-top: 24px; }
.itb-mega__col li + li { margin-top: 2px; }
.itb-mega__col a {
  display: block; padding: 7px 10px; margin-left: -10px; border-radius: 7px;
  font-size: 15px; font-weight: 600; color: var(--itb-c-text-sub);
  transition: color .18s, background .18s, transform .18s var(--itb-ease);
}
.itb-mega__col a:hover { color: var(--itb-c-primary); background: var(--itb-c-primary-soft); transform: translateX(3px); }

/* 2뎁스 제목(h4) 자체가 링크인 경우 — 3뎁스 링크 스타일이 먹지 않도록 되돌림 */
.itb-mega__col h4 a {
  display: inline; padding: 0; margin-left: 0; border-radius: 0;
  font-size: inherit; font-weight: inherit; color: inherit;
}
.itb-mega__col h4 a:hover { color: var(--itb-c-primary); background: none; transform: none; }

.itb-mega-dim {
  position: fixed; inset: 0; z-index: 880; background: rgba(13, 20, 36, .28);
  opacity: 0; visibility: hidden; transition: opacity .3s var(--itb-ease), visibility .3s;
}
.itb-mega-dim.itb-is-show { opacity: 1; visibility: visible; }

/* --- 메시지 전송 드롭다운 --- */
.itb-send-drop { position: relative; }
.itb-send-drop__btn {
  display: inline-flex; align-items: center; gap: 7px;
  height: 42px; padding: 0 16px; border-radius: var(--itb-r-full);
  background: var(--itb-c-bg-alt); border: 1px solid var(--itb-c-line);
  font-size: 14px; font-weight: 700; color: var(--itb-c-text); white-space: nowrap; flex-shrink: 0;
  transition: border-color .2s, background .2s, color .2s;
}
.itb-send-drop__btn svg { transition: transform .25s var(--itb-ease); }
.itb-send-drop__btn:hover { border-color: var(--itb-c-primary); color: var(--itb-c-primary); background: #fff; }
.itb-send-drop.itb-is-open .itb-send-drop__btn { border-color: var(--itb-c-primary); color: var(--itb-c-primary); background: #fff; }
.itb-send-drop.itb-is-open .itb-send-drop__btn svg { transform: rotate(180deg); }

.itb-send-drop__list {
  position: absolute; top: calc(100% + 10px); right: 0; z-index: 10;
  min-width: 206px; padding: 8px; border-radius: var(--itb-r-md);
  background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .24s var(--itb-ease), transform .24s var(--itb-ease), visibility .24s;
}
.itb-send-drop.itb-is-open .itb-send-drop__list { opacity: 1; visibility: visible; transform: none; }
.itb-send-drop__list a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--itb-r-sm);
  font-size: 14px; font-weight: 600; color: var(--itb-c-text-sub);
  transition: background .18s, color .18s;
}
.itb-send-drop__list a:hover { background: var(--itb-c-primary-soft); color: var(--itb-c-primary); }
.itb-dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.itb-dot--kakao { background: var(--itb-c-kakao); }
.itb-dot--rcs { background: var(--itb-c-primary); }
.itb-dot--sms { background: var(--itb-c-accent); }

/* --- 우측 플로팅 섹션 내비 --- */
.itb-side-nav {
  position: fixed; right: 26px; top: 50%; transform: translateY(-50%); z-index: 700;
  padding: 12px 8px; border-radius: var(--itb-r-full);
  background: rgba(255, 255, 255, .78);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-sm);
  opacity: 0; visibility: hidden; transition: opacity .35s var(--itb-ease), visibility .35s;
}
.itb-side-nav.itb-is-show { opacity: 1; visibility: visible; }
.itb-side-nav li + li { margin-top: 4px; }
.itb-side-nav a { position: relative; display: block; padding: 7px 6px; }
.itb-side-nav__dot {
  display: block; width: 8px; height: 8px; border-radius: 50%;
  background: #c8cede; transition: background .25s, transform .25s var(--itb-ease);
}
.itb-side-nav a:hover .itb-side-nav__dot { background: var(--itb-c-primary); transform: scale(1.3); }
.itb-side-nav a.itb-is-active .itb-side-nav__dot { background: var(--itb-c-primary); transform: scale(1.45); box-shadow: 0 0 0 4px rgba(43, 92, 255, .15); }

.itb-side-nav a::before {
  content: attr(data-label);
  position: absolute; right: calc(100% + 12px); top: 50%; transform: translate(6px, -50%);
  padding: 6px 12px; border-radius: var(--itb-r-full);
  background: var(--itb-c-text); color: #fff; font-size: 12px; font-weight: 700; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity .22s var(--itb-ease), transform .22s var(--itb-ease);
}
.itb-side-nav a:hover::before, .itb-side-nav a.itb-is-active::before { opacity: 1; transform: translate(0, -50%); }
.itb-side-nav a.itb-is-active::before { background: var(--itb-c-primary); }
.itb-header__util .itb-txt-link { padding: 10px 8px; font-size: 15px; font-weight: 600; color: var(--itb-c-text-sub); }
.itb-header__util .itb-txt-link:hover { color: var(--itb-c-text); }

.itb-nav-toggle { display: none; width: 44px; height: 44px; border-radius: var(--itb-r-sm); }
.itb-nav-toggle span { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--itb-c-text); border-radius: 2px; transition: transform .3s var(--itb-ease), opacity .2s; }
.itb-nav-toggle.itb-is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.itb-nav-toggle.itb-is-open span:nth-child(2) { opacity: 0; }
.itb-nav-toggle.itb-is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile drawer */
.itb-m-nav {
  position: fixed; inset: var(--itb-header-h) 0 0 0; z-index: 890;
  background: #fff; padding: 24px; overflow-y: auto;
  transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: opacity .28s var(--itb-ease), transform .28s var(--itb-ease), visibility .28s;
}
.itb-m-nav.itb-is-open { transform: none; opacity: 1; visibility: visible; }
.itb-m-nav__cta { display: grid; gap: 10px; margin-top: 28px; padding-bottom: 40px; }

.itb-m-acc__item { border-bottom: 1px solid var(--itb-c-line-soft); }
.itb-m-acc__head {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  padding: 16px 4px; font-size: 17px; font-weight: 700; text-align: left;
}
.itb-m-acc__ico { position: relative; width: 14px; height: 14px; flex: none; }
.itb-m-acc__ico::before, .itb-m-acc__ico::after {
  content: ''; position: absolute; left: 50%; top: 50%; background: var(--itb-c-text-mute);
  transform: translate(-50%, -50%); transition: transform .28s var(--itb-ease), background .2s;
}
.itb-m-acc__ico::before { width: 13px; height: 2px; }
.itb-m-acc__ico::after { width: 2px; height: 13px; }
.itb-m-acc__item.itb-is-open .itb-m-acc__head { color: var(--itb-c-primary); }
.itb-m-acc__item.itb-is-open .itb-m-acc__ico::before { background: var(--itb-c-primary); }
.itb-m-acc__item.itb-is-open .itb-m-acc__ico::after { transform: translate(-50%, -50%) rotate(90deg); background: var(--itb-c-primary); }

.itb-m-acc__body { display: none; padding: 4px 4px 18px; }
.itb-m-acc__item.itb-is-open .itb-m-acc__body { display: block; animation: fadeUp .3s var(--itb-ease); }
.itb-m-acc__body h5 { margin: 14px 0 6px; font-size: 12px; font-weight: 800; color: var(--itb-c-text-mute); letter-spacing: .02em; }
.itb-m-acc__body h5:first-child { margin-top: 4px; }
.itb-m-acc__body a { display: block; padding: 9px 12px; border-radius: 8px; font-size: 15px; font-weight: 600; color: var(--itb-c-text-sub); background: var(--itb-c-bg-alt); margin-bottom: 6px; }
.itb-m-acc__body a:active { background: var(--itb-c-primary-light); color: var(--itb-c-primary); }

.itb-m-nav__quick { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.itb-m-nav__quick a { padding: 9px 16px; border-radius: var(--itb-r-full); background: var(--itb-c-primary-soft); color: var(--itb-c-primary); font-size: 14px; font-weight: 700; }

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.itb-hero {
  position: relative; overflow: hidden;
  /* 헤더 스페이서를 상쇄해 배경 그라데이션이 고정 헤더 뒤까지 이어지게 함 */
  margin-top: calc(var(--itb-header-h) * -1);
  padding: calc(var(--itb-header-h) + 96px) 0 100px;
  background:
    radial-gradient(900px 520px at 12% -8%, #eaf0ff 0%, rgba(234, 240, 255, 0) 62%),
    radial-gradient(760px 480px at 92% 4%, #e5faf6 0%, rgba(229, 250, 246, 0) 60%),
    #fff;
}
.itb-hero::after {
  content: ''; position: absolute; inset: auto 0 0 0; height: 1px; background: var(--itb-c-line-soft);
}
.itb-hero__grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 64px; align-items: center;
}

.itb-hero__title {
  font-size: clamp(34px, 4.6vw, 58px); font-weight: 800;
  line-height: 1.24; letter-spacing: -0.04em; margin-bottom: 22px;
}
.itb-hero__title .itb-grad {
  background: linear-gradient(96deg, var(--itb-c-primary) 0%, #6a5bff 45%, var(--itb-c-accent) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.itb-hero__desc { font-size: 18px; line-height: 1.75; color: var(--itb-c-text-sub); max-width: 560px; }
.itb-hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.itb-hero__trust { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
.itb-trust-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 14px; border-radius: var(--itb-r-full);
  background: #fff; border: 1px solid var(--itb-c-line);
  font-size: 13px; font-weight: 600; color: var(--itb-c-text-sub);
  box-shadow: var(--itb-sh-xs);
}
.itb-trust-chip svg { flex: none; color: var(--itb-c-accent); }

/* Hero visual : message mockup */
.itb-hero__visual { position: relative; min-height: 520px; }
.itb-phone {
  position: relative; width: 300px; margin: 0 auto;
  background: #fff; border-radius: 40px; padding: 14px;
  border: 1px solid var(--itb-c-line);
  box-shadow: var(--itb-sh-lg);
}
.itb-phone__screen {
  border-radius: 28px; background: #b2c7d9; padding: 18px 14px 22px;
  min-height: 460px; display: flex; flex-direction: column; gap: 12px;
}
.itb-phone__bar {
  display: flex; align-items: center; gap: 8px; padding: 0 4px 12px;
  font-size: 13px; font-weight: 700; color: #2b3245;
}
.itb-phone__bar i { width: 26px; height: 26px; border-radius: 9px; background: var(--itb-c-kakao); display: grid; place-items: center; font-size: 12px; font-style: normal; color: var(--itb-c-kakao-text); }

.itb-bubble {
  background: #fff; border-radius: 4px 16px 16px 16px; padding: 14px;
  font-size: 13px; line-height: 1.6; box-shadow: 0 2px 6px rgba(0, 0, 0, .08);
}
.itb-bubble__tag {
  display: inline-block; font-size: 11px; font-weight: 700; color: var(--itb-c-kakao-text);
  background: var(--itb-c-kakao); padding: 3px 8px; border-radius: var(--itb-r-full); margin-bottom: 8px;
}
.itb-bubble__tag--rcs { background: var(--itb-c-primary); color: #fff; }
.itb-bubble strong { display: block; font-size: 14px; margin-bottom: 6px; }
.itb-bubble p { color: #4a5163; }
.itb-bubble__btn {
  margin-top: 12px; text-align: center; font-size: 12px; font-weight: 700;
  padding: 9px; border-radius: 8px; background: #f2f3f6; color: #3c4152;
}
.itb-bubble__thumb { height: 78px; border-radius: 10px; margin-bottom: 10px; background: linear-gradient(120deg, #2b5cff, #6a5bff 55%, #00c2a8); }

.itb-float-card {
  position: absolute; display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; border-radius: var(--itb-r-md); background: #fff;
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md); white-space: nowrap;
}
.itb-float-card__ico { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; flex: none; }
.itb-float-card__ico--blue { background: var(--itb-c-primary-light); color: var(--itb-c-primary); }
.itb-float-card__ico--mint { background: var(--itb-c-accent-light); color: var(--itb-c-accent); }
.itb-float-card b { display: block; font-size: 16px; line-height: 1.3; }
.itb-float-card span { font-size: 12px; color: var(--itb-c-text-mute); }
.itb-float-card--a { top: 34px; left: 0; animation: floaty 5s ease-in-out infinite; }
.itb-float-card--b { bottom: 66px; right: 0; animation: floaty 5s ease-in-out .8s infinite; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Hero stats */
.itb-hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-top: 80px; padding: 34px 40px;
  background: #fff; border: 1px solid var(--itb-c-line);
  border-radius: var(--itb-r-lg); box-shadow: var(--itb-sh-sm);
}
.itb-hero-stats__item { text-align: center; position: relative; }
.itb-hero-stats__item + .itb-hero-stats__item::before {
  content: ''; position: absolute; left: -12px; top: 6px; bottom: 6px; width: 1px; background: var(--itb-c-line);
}
.itb-hero-stats__num { font-size: clamp(26px, 3vw, 38px); font-weight: 800; letter-spacing: -0.04em; color: var(--itb-c-primary); }
.itb-hero-stats__num small { font-size: .55em; font-weight: 700; }
.itb-hero-stats__label { margin-top: 4px; font-size: 14px; color: var(--itb-c-text-sub); font-weight: 600; }
.itb-hero-stats__note { margin-top: 14px; font-size: 12px; color: var(--itb-c-text-mute); grid-column: 1 / -1; text-align: center; }

/* --------------------------------------------------------------------------
   7. Clients (logo slider + tags)
   -------------------------------------------------------------------------- */
.itb-clients { padding: 72px 0; border-bottom: 1px solid var(--itb-c-line-soft); background: #fff; }
.itb-clients__title { text-align: center; font-size: 15px; font-weight: 700; color: var(--itb-c-text-mute); letter-spacing: .02em; }
.itb-clients__title b { color: var(--itb-c-text); }

.itb-tag-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 24px 0 34px; }
.itb-tag-btn {
  padding: 9px 18px; border-radius: var(--itb-r-full); font-size: 14px; font-weight: 600;
  color: var(--itb-c-text-sub); background: var(--itb-c-bg-alt); border: 1px solid transparent;
  transition: all .2s;
}
.itb-tag-btn:hover { color: var(--itb-c-primary); background: var(--itb-c-primary-light); }
.itb-tag-btn.itb-is-active { background: var(--itb-c-primary); color: #fff; box-shadow: 0 6px 16px rgba(43, 92, 255, .22); }

.itb-marquee { position: relative; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.itb-marquee__track { display: flex; gap: 16px; width: max-content; animation: marquee 34s linear infinite; }
.itb-marquee:hover .itb-marquee__track { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.itb-client-card {
  display: flex; align-items: center; gap: 14px; flex: none;
  min-width: 232px; padding: 18px 22px;
  border: 1px solid var(--itb-c-line); border-radius: var(--itb-r-md); background: #fff;
  transition: opacity .3s, filter .3s, border-color .2s, transform .2s;
}
.itb-client-card:hover { border-color: var(--itb-c-primary); transform: translateY(-2px); }
.itb-client-card.itb-is-dim { opacity: .25; filter: grayscale(1); }
.itb-client-card__logo {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  display: grid; place-items: center; font-size: 15px; font-weight: 800;
  background: var(--itb-c-bg-alt); color: var(--itb-c-text); letter-spacing: -0.05em;
}
.itb-client-card__name { font-size: 15px; font-weight: 700; line-height: 1.3; }
.itb-client-card__cat { font-size: 12px; color: var(--itb-c-text-mute); }

/* --------------------------------------------------------------------------
   8. Issue cards
   -------------------------------------------------------------------------- */
.itb-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.itb-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.itb-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.itb-issue-card {
  padding: 34px 30px; border-radius: var(--itb-r-lg); background: #fff;
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-xs);
  transition: transform .3s var(--itb-ease), box-shadow .3s var(--itb-ease), border-color .3s;
}
.itb-issue-card:hover { transform: translateY(-6px); box-shadow: var(--itb-sh-md); border-color: #cfd8ff; }
.itb-issue-card__no { font-size: 12px; font-weight: 800; letter-spacing: .1em; color: var(--itb-c-text-mute); }
.itb-issue-card__title { margin: 12px 0 10px; font-size: 20px; font-weight: 700; letter-spacing: -0.03em; }
.itb-issue-card__desc { font-size: 15px; line-height: 1.7; color: var(--itb-c-text-sub); }

.itb-solution-bar {
  margin-top: 32px; padding: 28px 34px; border-radius: var(--itb-r-lg);
  background: linear-gradient(100deg, var(--itb-c-primary) 0%, #4a6cff 55%, #6a5bff 100%);
  color: #fff; display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  box-shadow: var(--itb-sh-primary);
}
.itb-solution-bar b { font-size: 19px; font-weight: 700; letter-spacing: -0.03em; }
.itb-solution-bar p { font-size: 15px; opacity: .88; margin-top: 4px; }
.itb-solution-bar .itb-btn { margin-left: auto; }

/* --------------------------------------------------------------------------
   9. Feature cards
   -------------------------------------------------------------------------- */
.itb-feature-card {
  position: relative; padding: 36px 28px; border-radius: var(--itb-r-lg);
  background: #fff; border: 1px solid var(--itb-c-line); overflow: hidden;
  transition: transform .3s var(--itb-ease), box-shadow .3s var(--itb-ease);
}
.itb-feature-card::before {
  content: ''; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--itb-c-primary), var(--itb-c-accent));
  transform: scaleX(0); transform-origin: left; transition: transform .4s var(--itb-ease);
}
.itb-feature-card:hover { transform: translateY(-6px); box-shadow: var(--itb-sh-md); }
.itb-feature-card:hover::before { transform: scaleX(1); }
.itb-feature-card__ico {
  width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center;
  background: var(--itb-c-primary-light); color: var(--itb-c-primary); margin-bottom: 20px;
}
.itb-feature-card__title { font-size: 19px; font-weight: 700; letter-spacing: -0.03em; margin-bottom: 10px; }
.itb-feature-card__desc { font-size: 15px; line-height: 1.7; color: var(--itb-c-text-sub); }

/* --------------------------------------------------------------------------
   10. Service tabs
   -------------------------------------------------------------------------- */
.itb-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 44px; }
.itb-tab-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--itb-r-full); font-size: 15px; font-weight: 700;
  color: var(--itb-c-text-sub); background: #fff; border: 1px solid var(--itb-c-line);
  transition: all .22s var(--itb-ease);
}
.itb-tab-btn:hover { color: var(--itb-c-primary); border-color: var(--itb-c-primary); }
.itb-tab-btn.itb-is-active { background: var(--itb-c-text); color: #fff; border-color: var(--itb-c-text); }
.itb-tab-btn__badge { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: var(--itb-r-full); background: var(--itb-c-primary-light); color: var(--itb-c-primary); }
.itb-tab-btn.itb-is-active .itb-tab-btn__badge { background: rgba(255, 255, 255, .18); color: #fff; }

.itb-tab-panel { display: none; }
.itb-tab-panel.itb-is-active { display: block; animation: fadeUp .45s var(--itb-ease); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.itb-panel-box {
  display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 48px; align-items: center;
  padding: 44px; border-radius: var(--itb-r-xl);
  background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-sm);
}
.itb-panel-box__title { font-size: 28px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.35; }
.itb-panel-box__desc { margin-top: 14px; font-size: 16px; line-height: 1.75; color: var(--itb-c-text-sub); }
.itb-panel-list { margin-top: 24px; display: grid; gap: 12px; }
.itb-panel-list li { display: flex; gap: 10px; font-size: 15px; color: var(--itb-c-text-sub); }
.itb-panel-list li svg { flex: none; margin-top: 3px; color: var(--itb-c-accent); }
.itb-panel-list li b { color: var(--itb-c-text); font-weight: 700; }

.itb-spec-table { font-size: 14px; border-radius: var(--itb-r-md); overflow: hidden; border: 1px solid var(--itb-c-line); }
.itb-spec-table th, .itb-spec-table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--itb-c-line-soft); }
.itb-spec-table thead th { background: var(--itb-c-bg-alt); font-weight: 700; font-size: 13px; color: var(--itb-c-text-sub); }
.itb-spec-table tbody th { font-weight: 700; width: 34%; color: var(--itb-c-text); background: #fcfdff; }
.itb-spec-table td { color: var(--itb-c-text-sub); }
.itb-spec-table tr:last-child th, .itb-spec-table tr:last-child td { border-bottom: 0; }
.itb-spec-table .itb-hi { color: var(--itb-c-primary); font-weight: 700; }

/* --------------------------------------------------------------------------
   11. Failover flow
   -------------------------------------------------------------------------- */
.itb-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; position: relative; }
.itb-flow-step {
  position: relative; padding: 32px 26px; border-radius: var(--itb-r-lg);
  background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-xs);
}
.itb-flow-step__no {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--itb-c-text); color: #fff; font-size: 14px; font-weight: 800; margin-bottom: 18px;
}
.itb-flow-step:last-child .itb-flow-step__no { background: var(--itb-c-primary); }
.itb-flow-step__title { font-size: 18px; font-weight: 700; letter-spacing: -0.03em; }
.itb-flow-step__desc { margin-top: 8px; font-size: 14px; color: var(--itb-c-text-sub); }
.itb-flow-step__ch { margin-top: 16px; display: inline-flex; padding: 5px 12px; border-radius: var(--itb-r-full); background: var(--itb-c-bg-alt); font-size: 12px; font-weight: 700; color: var(--itb-c-text-sub); }
.itb-flow-step::after {
  content: ''; position: absolute; top: 50%; right: -14px; z-index: 2;
  width: 8px; height: 8px; border-top: 2px solid var(--itb-c-primary); border-right: 2px solid var(--itb-c-primary);
  transform: translateY(-50%) rotate(45deg);
}
.itb-flow-step:last-child::after { display: none; }

.itb-result-bar {
  margin-top: 26px; padding: 26px 32px; border-radius: var(--itb-r-lg);
  background: var(--itb-c-accent-light); border: 1px solid #b8f0e6;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.itb-result-bar__badge { font-size: 26px; font-weight: 800; color: #00937f; letter-spacing: -0.04em; }
.itb-result-bar p { font-size: 15px; color: #10695c; font-weight: 600; }

/* --------------------------------------------------------------------------
   12. Video section
   -------------------------------------------------------------------------- */
.itb-video-sec {
  padding: 120px 0; color: #fff; position: relative; overflow: hidden;
  background: linear-gradient(150deg, #0d1424 0%, #141d38 48%, #16234d 100%);
}
.itb-video-sec::before {
  content: ''; position: absolute; width: 620px; height: 620px; border-radius: 50%;
  top: -240px; right: -180px; background: radial-gradient(circle, rgba(43,92,255,.4), transparent 68%);
}
.itb-video-sec::after {
  content: ''; position: absolute; width: 520px; height: 520px; border-radius: 50%;
  bottom: -220px; left: -160px; background: radial-gradient(circle, rgba(0,194,168,.26), transparent 68%);
}
.itb-video-sec .itb-container { position: relative; z-index: 1; }
.itb-video-sec .itb-eyebrow { background: rgba(255, 255, 255, .1); color: #9fb8ff; }
.itb-video-sec .itb-sec-title { color: #fff; }
.itb-video-sec .itb-sec-desc { color: rgba(255, 255, 255, .68); }

.itb-video-frame {
  position: relative; margin-top: 52px; border-radius: var(--itb-r-xl); overflow: hidden;
  aspect-ratio: 16 / 9; cursor: pointer;
  border: 1px solid rgba(255, 255, 255, .14);
  background: linear-gradient(135deg, #1b2547 0%, #23306a 50%, #142a4f 100%);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .45);
}
.itb-video-frame__grid {
  position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px;
}
.itb-video-frame__inner { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; }
.itb-video-frame__label { font-size: 13px; font-weight: 700; letter-spacing: .12em; color: rgba(255,255,255,.5); text-transform: uppercase; }
.itb-video-frame__title { margin-top: 14px; font-size: clamp(20px, 2.6vw, 30px); font-weight: 800; letter-spacing: -0.035em; }
.itb-video-frame__meta { margin-top: 10px; font-size: 14px; color: rgba(255,255,255,.55); }

.itb-play-btn {
  position: relative;
  width: 88px; height: 88px; border-radius: 50%; margin: 0 auto 6px;
  display: grid; place-items: center; color: var(--itb-c-text);
  background: #fff; box-shadow: 0 12px 40px rgba(0, 0, 0, .35);
  transition: transform .3s var(--itb-ease);
}
.itb-video-frame:hover .itb-play-btn { transform: scale(1.08); }
.itb-play-btn::before {
  content: ''; position: absolute; width: 88px; height: 88px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .5); animation: ripple 2.4s ease-out infinite;
}
@keyframes ripple {
  0% { transform: scale(1); opacity: .8; }
  100% { transform: scale(1.8); opacity: 0; }
}

.itb-video-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.itb-video-point { padding: 22px 24px; border-radius: var(--itb-r-md); background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); }
.itb-video-point b { display: block; font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.itb-video-point span { font-size: 14px; color: rgba(255, 255, 255, .6); line-height: 1.6; }

/* Modal */
.itb-modal {
  position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; padding: 24px;
  background: rgba(6, 10, 20, .82); backdrop-filter: blur(6px);
  opacity: 0; visibility: hidden; transition: opacity .3s var(--itb-ease), visibility .3s;
}
.itb-modal.itb-is-open { opacity: 1; visibility: visible; }
.itb-modal__dialog {
  width: 100%; max-width: 980px; border-radius: var(--itb-r-lg); overflow: hidden;
  background: #000; aspect-ratio: 16 / 9; position: relative;
  transform: scale(.96); transition: transform .3s var(--itb-ease);
}
.itb-modal.itb-is-open .itb-modal__dialog { transform: none; }
.itb-modal__dialog iframe, .itb-modal__dialog video { width: 100%; height: 100%; border: 0; display: block; }
.itb-modal__placeholder {
  position: absolute; inset: 0; display: grid; place-content: center; gap: 10px; text-align: center;
  color: rgba(255, 255, 255, .78); background: #10182c; padding: 24px; font-size: 15px;
}
.itb-modal__placeholder b { font-size: 18px; color: #fff; }
.itb-modal__placeholder code { font-size: 13px; color: #8fb0ff; background: rgba(255,255,255,.07); padding: 4px 10px; border-radius: 6px; }
.itb-modal__close {
  position: absolute; top: -48px; right: 0; width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255, 255, 255, .14); color: #fff; display: grid; place-items: center;
  transition: background .2s;
}
.itb-modal__close:hover { background: rgba(255, 255, 255, .28); }

/* --------------------------------------------------------------------------
   13. Usage types
   -------------------------------------------------------------------------- */
.itb-type-card {
  padding: 36px 30px; border-radius: var(--itb-r-lg); background: #fff;
  border: 1px solid var(--itb-c-line); transition: transform .3s var(--itb-ease), box-shadow .3s var(--itb-ease);
}
.itb-type-card:hover { transform: translateY(-6px); box-shadow: var(--itb-sh-md); }
.itb-type-card__no { font-size: 13px; font-weight: 800; color: var(--itb-c-primary); letter-spacing: .08em; }
.itb-type-card__title { margin: 10px 0 12px; font-size: 22px; font-weight: 800; letter-spacing: -0.035em; }
.itb-type-card__desc { font-size: 15px; line-height: 1.75; color: var(--itb-c-text-sub); }
.itb-type-card__tag { display: inline-flex; margin-top: 20px; padding: 6px 14px; border-radius: var(--itb-r-full); background: var(--itb-c-bg-alt); font-size: 13px; font-weight: 600; color: var(--itb-c-text-sub); }

/* --------------------------------------------------------------------------
   14. Onboarding steps
   -------------------------------------------------------------------------- */
.itb-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.itb-step {
  position: relative; padding: 28px 20px; text-align: center;
  border-radius: var(--itb-r-md); background: #fff; border: 1px solid var(--itb-c-line);
  transition: border-color .25s, transform .25s var(--itb-ease);
}
.itb-step:hover { border-color: var(--itb-c-primary); transform: translateY(-4px); }
.itb-step__no {
  width: 40px; height: 40px; margin: 0 auto 14px; border-radius: 50%;
  display: grid; place-items: center; font-size: 15px; font-weight: 800;
  background: var(--itb-c-primary-light); color: var(--itb-c-primary);
}
.itb-step__title { font-size: 16px; font-weight: 700; }
.itb-step__desc { margin-top: 6px; font-size: 13px; color: var(--itb-c-text-sub); line-height: 1.6; }

/* --------------------------------------------------------------------------
   15. Split blocks (franchise / election)
   -------------------------------------------------------------------------- */
.itb-split { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.itb-split-card {
  padding: 44px 40px; border-radius: var(--itb-r-xl); border: 1px solid var(--itb-c-line); background: #fff;
  position: relative; overflow: hidden;
}
.itb-split-card--tint { background: linear-gradient(160deg, var(--itb-c-primary-soft) 0%, #fff 62%); }
.itb-split-card__label { display: inline-flex; padding: 6px 14px; border-radius: var(--itb-r-full); font-size: 12px; font-weight: 800; letter-spacing: .06em; background: var(--itb-c-text); color: #fff; }
.itb-split-card__title { margin: 18px 0 12px; font-size: 26px; font-weight: 800; letter-spacing: -0.035em; line-height: 1.35; }
.itb-split-card__desc { font-size: 15px; line-height: 1.75; color: var(--itb-c-text-sub); }
.itb-check-list { margin-top: 24px; display: grid; gap: 12px; }
.itb-check-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--itb-c-text-sub); }
.itb-check-list li svg { flex: none; margin-top: 3px; color: var(--itb-c-primary); }

/* --------------------------------------------------------------------------
   16. Compare table
   -------------------------------------------------------------------------- */
.itb-compare {
  border-radius: var(--itb-r-lg); overflow: hidden; border: 1px solid var(--itb-c-line);
  background: #fff; box-shadow: var(--itb-sh-sm);
}
.itb-compare th, .itb-compare td { padding: 18px 24px; border-bottom: 1px solid var(--itb-c-line-soft); font-size: 15px; }
.itb-compare thead th { background: var(--itb-c-text); color: #fff; font-weight: 700; font-size: 14px; }
.itb-compare thead th:last-child { background: var(--itb-c-primary); text-align: center; width: 180px; }
.itb-compare tbody th { text-align: left; font-weight: 600; color: var(--itb-c-text); }
.itb-compare tbody td { text-align: center; color: var(--itb-c-primary); font-weight: 800; background: var(--itb-c-primary-soft); }
.itb-compare tbody tr:last-child th, .itb-compare tbody tr:last-child td { border-bottom: 0; }

/* --------------------------------------------------------------------------
   17. Pricing
   -------------------------------------------------------------------------- */
.itb-price-card {
  padding: 34px 30px; border-radius: var(--itb-r-lg); background: #fff; border: 1px solid var(--itb-c-line);
}
.itb-price-card__ico { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: var(--itb-c-accent-light); color: #00937f; margin-bottom: 18px; }
.itb-price-card__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.itb-price-card__desc { font-size: 15px; line-height: 1.7; color: var(--itb-c-text-sub); }

/* --------------------------------------------------------------------------
   18. CTA + contact
   -------------------------------------------------------------------------- */
.itb-cta-sec { padding: 110px 0; background: var(--itb-c-bg-alt); border-top: 1px solid var(--itb-c-line-soft); }
.itb-cta-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px); gap: 56px; align-items: start; }
.itb-cta-info__title { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; line-height: 1.3; letter-spacing: -0.04em; }
.itb-cta-info__desc { margin-top: 18px; font-size: 17px; line-height: 1.75; color: var(--itb-c-text-sub); }

.itb-cs-box { margin-top: 32px; padding: 26px 28px; border-radius: var(--itb-r-lg); background: #fff; border: 1px solid var(--itb-c-line); }
.itb-cs-box__label { font-size: 13px; font-weight: 700; color: var(--itb-c-text-mute); }
.itb-cs-box__tel { display: block; margin: 4px 0 10px; font-size: 32px; font-weight: 800; letter-spacing: -0.045em; color: var(--itb-c-primary); }
.itb-cs-box__time { font-size: 14px; color: var(--itb-c-text-sub); line-height: 1.7; }

.itb-form-card { padding: 36px 32px; border-radius: var(--itb-r-xl); background: #fff; border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md); }
.itb-form-card__title { font-size: 20px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 22px; }
.itb-field { margin-bottom: 16px; }
.itb-field label { display: block; font-size: 13px; font-weight: 700; color: var(--itb-c-text-sub); margin-bottom: 7px; }
.itb-field input, .itb-field select, .itb-field textarea {
  width: 100%; padding: 13px 15px; border-radius: var(--itb-r-sm);
  border: 1px solid var(--itb-c-line); background: #fcfdff; font-size: 15px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.itb-field textarea { min-height: 96px; resize: vertical; }
.itb-field input:focus, .itb-field select:focus, .itb-field textarea:focus {
  outline: 0; border-color: var(--itb-c-primary); background: #fff;
  box-shadow: 0 0 0 3px rgba(43, 92, 255, .12);
}
.itb-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.itb-agree { display: flex; gap: 9px; align-items: flex-start; font-size: 13px; color: var(--itb-c-text-sub); margin: 6px 0 20px; }
.itb-agree input { width: 16px; height: 16px; margin-top: 2px; flex: none; accent-color: var(--itb-c-primary); }
.itb-agree a { text-decoration: underline; }
.itb-form-msg { margin-top: 14px; font-size: 14px; font-weight: 600; text-align: center; color: var(--itb-c-primary); min-height: 20px; }

/* --------------------------------------------------------------------------
   19. Footer
   -------------------------------------------------------------------------- */
.itb-footer { background: var(--itb-c-bg-deep); color: rgba(255, 255, 255, .62); padding: 0 0 40px; font-size: 14px; }

/* 푸터 상단 회사/정책 메뉴 바 */
.itb-footer-policy { border-bottom: 1px solid rgba(255, 255, 255, .1); margin-bottom: 56px; }
.itb-footer-policy ul {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  min-height: 58px; gap: 0 2px;
}
.itb-footer-policy li { position: relative; }
.itb-footer-policy li + li::before {
  content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 1px; height: 11px; background: rgba(255, 255, 255, .18);
}
.itb-footer-policy a {
  display: block; padding: 10px 20px;
  font-size: 14px; font-weight: 600; color: rgba(255, 255, 255, .72);
  transition: color .2s;
}
.itb-footer-policy a:hover { color: #fff; }
.itb-footer__top { display: grid; grid-template-columns: minmax(0, 1.2fr) repeat(3, minmax(0, 1fr)); gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.itb-footer .itb-logo { color: #fff; margin-bottom: 16px; }
.itb-footer__desc { line-height: 1.75; max-width: 320px; font-size: 14px; }
.itb-sns { display: flex; align-items: center; gap: 10px; margin-top: 26px; }
.itb-sns__link {
  display: block; width: 34px; height: 34px;
  border-radius: 50%; overflow: hidden; /* ico_italkbiz_tistory_sns.jpg 흰 배경 모서리 정리용 */
  transition: transform .25s var(--itb-ease), box-shadow .25s var(--itb-ease), opacity .2s;
  opacity: .92;
}
.itb-sns__link img { width: 100%; height: 100%; object-fit: cover; display: block; }
.itb-sns__link:hover { opacity: 1; transform: translateY(-3px); box-shadow: 0 8px 18px rgba(0, 0, 0, .38); }

.itb-footer__col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.itb-footer__col li + li { margin-top: 10px; }
.itb-footer__col a:hover { color: #fff; }
.itb-footer__bottom { padding-top: 28px; display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; }
.itb-footer__biz { font-size: 13px; line-height: 1.8; color: rgba(255, 255, 255, .5); }
.itb-biz-link {
  display: inline-flex; align-items: center; gap: 5px; margin-left: 8px;
  padding: 4px 11px; border-radius: var(--itb-r-full);
  border: 1px solid rgba(255, 255, 255, .2); background: rgba(255, 255, 255, .06);
  font-size: 12px; font-weight: 600; color: rgba(255, 255, 255, .78);
  vertical-align: middle; transition: background .2s, color .2s, border-color .2s;
}
.itb-biz-link:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .38); color: #fff; }

.itb-footer__certs { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.itb-cert-chip { padding: 7px 14px; border-radius: var(--itb-r-full); background: rgba(255, 255, 255, .08); font-size: 12px; font-weight: 600; color: rgba(255, 255, 255, .8); }
.itb-footer__copy { width: 100%; padding-top: 20px; font-size: 13px; color: rgba(255, 255, 255, .4); }

/* --------------------------------------------------------------------------
   인증서 레이어 팝업
   여닫기는 기존 방식($('#layerpopCert').show()/hide())을 그대로 사용합니다.
   → 최상위 요소의 인라인 display 만 토글되므로 클래스에는 display 를 두지 않습니다.
   -------------------------------------------------------------------------- */
.itb-certpop { position: fixed; inset: 0; z-index: 10000; }
.itb-certpop__dim { position: absolute; inset: 0; background: rgba(6, 10, 20, .62); }
.itb-certpop__box {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(92vw, 720px);
  padding: 14px; box-sizing: border-box;
  background: #fff; border-radius: var(--itb-r-md); box-shadow: var(--itb-sh-lg);
}
.itb-certpop__body { max-height: 82vh; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.itb-certpop__body img { width: 100%; height: auto; }
.itb-certpop__close {
  position: absolute; top: 8px; right: 8px; z-index: 1;
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(13, 20, 36, .55); color: #fff;
  display: grid; place-items: center;
  transition: background .2s;
}
.itb-certpop__close:hover { background: rgba(13, 20, 36, .8); }

/* --------------------------------------------------------------------------
   반응형 노출 유틸
     .itb-hide-mobile : PC 에만 노출 (768px 이하 숨김)  ← 미디어쿼리에서 처리
     .itb-only-mobile : 모바일에만 노출 (768px 이하에서만 표시)
   -------------------------------------------------------------------------- */
.itb-only-mobile { display: none; }

/* --------------------------------------------------------------------------
   모바일 하단 고정 CTA (768px 이하에서만 노출)
   PC 에서는 숨겨지므로 공통 fragment 에 넣어두어도 무방합니다.
   -------------------------------------------------------------------------- */
.itb-bottom-cta,
.itb-bottom-cta-spacer { display: none; }

/* Float buttons */
.itb-to-top {
  position: fixed; right: 28px; bottom: 28px; z-index: 800;
  width: 50px; height: 50px; border-radius: 50%; background: #fff; color: var(--itb-c-text);
  border: 1px solid var(--itb-c-line); box-shadow: var(--itb-sh-md);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .3s var(--itb-ease);
}
.itb-to-top.itb-is-show { opacity: 1; visibility: visible; transform: none; }
.itb-to-top:hover { background: var(--itb-c-primary); color: #fff; border-color: var(--itb-c-primary); }

/* --------------------------------------------------------------------------
   20. Scroll reveal
   -------------------------------------------------------------------------- */
.itb-reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--itb-ease), transform .7s var(--itb-ease); }
.itb-reveal.itb-is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .itb-reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   21. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1440px) {
  .itb-side-nav { right: 14px; }
}

@media (max-width: 1280px) {
  .itb-gnb__link { padding: 10px 11px; font-size: 15px; }
  .itb-header__inner { gap: 20px; }
  .itb-header__util .itb-txt-link { display: none; }
  .itb-side-nav { display: none; }
}

@media (max-width: 1024px) {
  .itb-header__util .itb-btn--primary, .itb-send-drop { display: none; }
  .itb-gnb, .itb-mega { display: none; }
  .itb-nav-toggle { display: block; margin-left: auto; }

  .itb-hero { padding: calc(var(--itb-header-h) + 64px) 0 80px; }
  .itb-hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .itb-hero__desc { max-width: none; }
  .itb-hero__visual { min-height: auto; }
  .itb-float-card--a { left: 4%; }
  .itb-float-card--b { right: 4%; }

  .itb-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .itb-steps { grid-template-columns: repeat(3, 1fr); }
  .itb-panel-box { grid-template-columns: 1fr; gap: 32px; padding: 32px; }
  .itb-split { grid-template-columns: 1fr; }
  .itb-cta-grid { grid-template-columns: 1fr; gap: 40px; }
  .itb-footer__top { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .itb-section, .itb-cta-sec, .itb-video-sec { padding: 76px 0; }
  .itb-section--tight { padding: 60px 0; }
  .itb-container { padding: 0 20px; }

  .itb-hero-stats { grid-template-columns: 1fr; gap: 20px; padding: 26px 24px; margin-top: 56px; }
  .itb-hero-stats__item + .itb-hero-stats__item::before { display: none; }
  .itb-hero-stats__item + .itb-hero-stats__item { padding-top: 20px; border-top: 1px solid var(--itb-c-line); }

  .itb-grid-3, .itb-grid-4, .itb-grid-2, .itb-flow, .itb-video-points { grid-template-columns: 1fr; }
  .itb-flow-step::after { top: auto; bottom: -14px; right: 50%; transform: translateX(50%) rotate(135deg); }
  .itb-steps { grid-template-columns: repeat(2, 1fr); }

  .itb-solution-bar { flex-direction: column; align-items: flex-start; padding: 24px; }
  .itb-solution-bar .itb-btn { margin-left: 0; width: 100%; }

  .itb-split-card { padding: 32px 24px; }
  .itb-form-card { padding: 28px 22px; }
  .itb-field-row { grid-template-columns: 1fr; }

  .itb-compare th, .itb-compare td { padding: 14px 16px; font-size: 14px; }
  .itb-compare thead th:last-child { width: 90px; }

  .itb-modal__close { top: auto; bottom: -50px; right: 50%; transform: translateX(50%); }
  /* PC 전용 항목 숨김 (푸터 정책 링크 3개 · 서비스/이용안내/고객지원 컬럼) */
  .itb-hide-mobile { display: none !important; }
  /* 모바일 전용 항목 노출 (푸터 상담문의 · 후불결제 안내) */
  .itb-only-mobile { display: block; }

  /* --- 하단 고정 CTA --- */
  .itb-bottom-cta {
    display: block;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 850;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-top: 1px solid var(--itb-c-line);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .itb-bottom-cta__inner {
    max-width: 600px; margin: 0 auto; height: 72px;
    display: flex; align-items: center; gap: 8px; padding: 0 20px;
  }
  .itb-bottom-cta .itb-btn { flex: 1; height: 46px; padding: 0 12px; font-size: 14px; }
  .itb-bottom-cta .itb-btn--ghost { flex: 0 0 108px; }

  /* 하단 CTA 에 콘텐츠가 가리지 않도록 푸터 끝에 넣는 여백 */
  .itb-bottom-cta-spacer { display: block; height: calc(72px + env(safe-area-inset-bottom, 0px)); }

  .itb-footer-policy { margin-bottom: 36px; }
  .itb-footer-policy ul { justify-content: flex-start; padding: 12px 0; }
  .itb-footer-policy li + li::before { display: none; }
  .itb-footer-policy a { padding: 8px 14px 8px 0; font-size: 13px; }
  .itb-footer__top { grid-template-columns: 1fr; gap: 32px; }
  .itb-footer__certs { margin-left: 0; }

  /* TOP 버튼 : 하단 고정 CTA 가 있는 레이아웃(mDefault)에서는 그 위로 띄운다.
     ※ 규칙을 두 번 선언하면 뒤엣것이 이겨 CTA 바(z-index 850) 뒤로 가려지므로
        반드시 한 곳에서만 bottom 을 지정할 것. */
  .itb-to-top { right: 16px; bottom: 16px; }
  body:has(.itb-bottom-cta) .itb-to-top {
    bottom: calc(72px + 16px + env(safe-area-inset-bottom, 0px));
  }
}

@media (max-width: 480px) {
  .itb-phone { width: 100%; max-width: 280px; }
  .itb-float-card { padding: 10px 14px; }
  .itb-float-card b { font-size: 14px; }
  .itb-steps { grid-template-columns: 1fr; }
  .itb-btn { width: 100%; }
  .itb-hero__cta .itb-btn { width: 100%; }
}