/* ==========================================================================
   아크스미스 서브페이지 공통 스타일

   치수 출처 : subDesgin/*.jpg (2880 폭 = 1920 @1.5x) 실측
     배너 높이 1000px  ·  본문 상단 여백 160px  ·  라벨→헤드라인 36px
   아직 실측 전인 값은 각 규칙 주석에 표시해 두었습니다.

   구조
     서브 배너   www/page/_banner.php  (head.php 가 자동 출력)
     공통 CTA    www/page/_contact.php (각 페이지가 필요할 때 include)
   ========================================================================== */

/* --------------------------------------------------------------------------
   서브 배너
   -------------------------------------------------------------------------- */
.sub-banner {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: min(100svh, 1000px);   /* 시안 실측 1000px (연혁·인증서·회사소개 일치) */
    overflow: hidden;
    color: #fff;
    text-align: center;
}

/* 래퍼는 스크롤 확대, 내부 이미지는 로드 확대 — 두 scale 이 곱해진다.
   같은 요소에 걸면 스크롤 시작 순간 스크럽이 자기 시작값으로 되돌려 배경이 튄다. */
.sub-banner__bg { position: absolute; inset: 0; z-index: 0; will-change: transform; }
.sub-banner__bg img,
.sub-banner__bg picture {
    display: block; width: 100%; height: 100%; object-fit: cover;
    will-change: transform;
}
.sub-banner__inner { will-change: transform, opacity; }

/* 배경 이미지가 아직 없을 때 — 배너가 비어 보이지 않게 브랜드 그라데이션으로 대체 */
.sub-banner.is-noimg {
    background: linear-gradient(135deg, #2766f8 0%, #225cea 40%, #153abc 75%, #08198f 100%);
}

/* 이미지 위 텍스트 가독성 확보

   배경 4장의 밝기가 제각각이라(타이틀 영역 평균 21~146) 옅은 스크림으로는
   밝은 사진에서 흰 글씨 대비가 4.1:1 까지 떨어진다. 가장 밝은 SUPPORT 배경
   기준으로 본문 글씨도 4.5:1 을 넘도록 중앙부를 .35 로 잡았다. */

.sub-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(180deg,
        rgba(8, 25, 143, 0.18) 0%,
        rgba(8, 25, 143, 0.12) 45%,
        rgba(8, 25, 143, 0.20) 100%
    );
}

.sub-banner.is-noimg::after { display: none; }

.sub-banner__inner { position: relative; z-index: 2; padding-inline: 1.25rem; }

.sub-banner__title {
    font-size: clamp(2.5rem, 5.4vw, 6.5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -.01em;
    text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   서브 GNB — 2단 드롭다운 (대메뉴 / 현재 페이지)
   -------------------------------------------------------------------------- */
.sub-gnb {
    display: flex;
    justify-content: center;
    gap: .75rem;
    margin-top: clamp(1.5rem, 2.6vw, 2.75rem);
}

.sub-gnb__sel { position: relative; }

.sub-gnb__btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    min-width: 168px;
    min-height: 46px;
    padding: .7rem 1.25rem;
    border: 1px solid rgba(255, 255, 255, .55);
    border-radius: 999px;
    /* 흰 반투명은 밝은 사진 위에서 글씨가 묻힌다 — 어두운 쪽으로 채워 자체 대비를 만든다 */
    background: rgba(8, 25, 143, .38);
    color: #fff;
    font-size: .85rem;
    font-weight: 600;
    letter-spacing: .04em;
    white-space: nowrap;
    cursor: pointer;
    transition: background .25s, border-color .25s;
}
.sub-gnb__btn:hover { background: rgba(8, 25, 143, .55); border-color: #fff; }

/* 현재 페이지 쪽은 흰색으로 채워 강조 (시안) */
.sub-gnb__sel--current .sub-gnb__btn {
    background: #fff;
    border-color: #fff;
    color: var(--color-brand-500);
}
.sub-gnb__sel--current .sub-gnb__btn:hover { background: #eef3ff; }

/* 화살표 */
.sub-gnb__btn em {
    width: 9px; height: 9px; flex: none;
    border-right: 1.6px solid currentColor;
    border-bottom: 1.6px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform .25s;
}
.sub-gnb__btn[aria-expanded="true"] em { transform: translateY(2px) rotate(-135deg); }



/* 첫 번째 드롭다운 버튼 */
.sub-gnb__sel:first-child .sub-gnb__btn {
    background: rgba(0, 0, 0, 0.15);
    color: #fff;
}

/* 마우스 호버 시 */
.sub-gnb__sel:first-child .sub-gnb__btn:hover {
    background: rgba(0, 0, 0, 0.25);
    border-color: #fff;
}



.sub-gnb__list {
    position: absolute;
    left: 0; right: 0;
    top: calc(100% + .5rem);
    z-index: 5;
    padding: .4rem 0;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 12px 30px rgba(8, 25, 143, .22);
    list-style: none;
    text-align: left;
    overflow: hidden;
}
.sub-gnb__list a {
    display: block;
    padding: .7rem 1.25rem;
    color: var(--color-ink-600);
    font-size: .85rem;
    white-space: nowrap;
    transition: background .2s, color .2s;
}
.sub-gnb__list a:hover { background: var(--color-brand-50); color: var(--color-brand-500); }
.sub-gnb__list a[aria-current] { color: var(--color-brand-500); font-weight: 700; }

/* --------------------------------------------------------------------------
   SCROLL DOWN
   -------------------------------------------------------------------------- */
.sub-banner__scroll {
    position: absolute;
    left: 50%;
    bottom: 2.5rem;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    color: rgba(255, 255, 255, .9);
    font-size: .68rem;
    font-weight: 500;
    letter-spacing: .18em;
}
.sub-banner__scroll svg { width: 16px; height: 9px; }

/* --------------------------------------------------------------------------
   서브 본문 공통
   -------------------------------------------------------------------------- */
.sub-section { padding-block: clamp(3.5rem, 7.8vw, 9.375rem) clamp(3.5rem, 8.3vw, 10rem); }   /* 캡쳐 : 배너 → 라벨 글자 154 (위 150 + 라벨 lh 여백) */
/* 배너 바로 아래 첫 섹션만 160, 이어지는 섹션은 캡쳐 실측 120 위 / 110 아래 */
.sub-section:has(+ .sub-section) { padding-bottom: clamp(3rem, 5.8vw, 6.9rem); }   /* 뒤에 섹션이 이어지면 아래 110 */
.sub-section ~ .sub-section { padding-block: clamp(3rem, 6.05vw, 7.25rem) clamp(3rem, 5.8vw, 6.9rem); }   /* 캡쳐 : 섹션 경계 → 라벨 글자 117~123 */
.sub-section--tint { background: #faf8fd; }   /* 캡쳐 실측 250,248,253 */

.sub-heading {
    font-size: clamp(1.75rem, 2.8vw, 3.375rem);   /* 캡쳐 글자폭 역산 54px (전 페이지 제목 높이 49 로 동일) */
    font-weight: 700;
    line-height: 1.43;
    letter-spacing: -.01em;
    color: var(--color-ink-900);
}
.sub-heading--brand { color: var(--color-brand-500); font-size: clamp(1.6rem, 2.5vw, 3rem); line-height: 1.4; }   /* 좌측 파란 헤드라인 48px (캡쳐 글자폭 역산) */
.sub-heading--center { text-align: center; }

.sub-lead {
    margin-top: 1rem;
    font-size: clamp(.95rem, 1.1vw, 1.05rem);
    line-height: 1.9;
    color: var(--color-ink-500);
}

/* 3열 카드 (철학) — 캡쳐 : 카드 452 × 451 · 사진 380 × 200 · 간격 32 */
.sub-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: clamp(1.25rem, 1.7vw, 2rem);
    margin-top: clamp(2rem, 3.2vw, 3.9rem);
    list-style: none;
    padding: 0;
}
.sub-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    padding: clamp(1.25rem, 1.9vw, 2.25rem) clamp(1.25rem, 1.9vw, 2.25rem) clamp(1.75rem, 2.4vw, 2.9rem);
    box-shadow: 0 0 20px rgba(39, 102, 248, .05);
    text-align: center;
}
.sub-card__media { display: block; border-radius: 12px; overflow: hidden; aspect-ratio: 760 / 400; }
.sub-card__media img,
.sub-card__media picture { width: 100%; height: 100%; object-fit: cover; display: block; }
.sub-card__title {
    margin-top: clamp(1.5rem, 2vw, 2.4rem);
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 1.9vw, 2.25rem);
    font-weight: 600;
    line-height: 1.2;
}
.sub-card__desc { margin-top: clamp(1rem, 1.3vw, 1.5rem); font-size: clamp(.85rem, .85vw, 1rem); line-height: 1.6; color: var(--color-ink-600); }

/* 파트너 로고 띠 */
.sub-partners { margin-top: clamp(2rem, 3vw, 3rem); }
.sub-partners__title {
    display: flex; align-items: center; gap: 1.5rem;
    font-family: var(--font-display); font-weight: 700; letter-spacing: .06em;
    color: var(--color-ink-900); white-space: nowrap;
}
.sub-partners__title::before,
.sub-partners__title::after { content: ''; flex: 1; height: 1px; background: var(--color-brand-200); }
.sub-partners__list {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
    gap: clamp(1.5rem, 4vw, 4rem);
    margin-top: clamp(1.75rem, 3vw, 2.75rem);
    list-style: none; padding: 0;
}
.sub-partners__list img { max-height: 42px; width: auto; opacity: .85; }

.sub-partners__name {
    font-size: .95rem; font-weight: 700; color: var(--color-ink-400);
    letter-spacing: -.01em;
}

/* --------------------------------------------------------------------------
   회사소개 — 인사말
   -------------------------------------------------------------------------- */
.about-greeting {
    display: grid;
    grid-template-columns: 620fr 752fr;   /* 캡쳐 : 글 250..870 / 사진 917..1670 */
    column-gap: 48px;
    align-items: end;   /* 캡쳐 : 글 아래끝이 작은 사진 아래끝과 맞는다 */
    margin-top: clamp(2rem, 3.4vw, 3.3rem);   /* 시안: 헤드라인 → 인사말 53px */
}

.about-greeting__lead {
    font-size: clamp(1.05rem, 1.35vw, 1.25rem);
    font-weight: 700;
    line-height: 1.6;
    color: var(--color-ink-900);
    margin-bottom: 1.75rem;
}
.about-greeting__lead strong { color: var(--color-brand-500); }

.about-greeting__text p + p { margin-top: clamp(1rem, 1.35vw, 1.6rem); }
.about-greeting__text p {
    font-size: clamp(.85rem, .85vw, 1rem);
    line-height: 1.55;
    color: var(--color-ink-600);
}
/* ⚠️ 위 p 규칙(0,1,1)이 리드(0,1,0)를 덮어 14px 로 줄어들었다 — 같은 조합으로 올려 둔다 */
.about-greeting__text p.about-greeting__lead {
    margin-bottom: clamp(2rem, 3.4vw, 4.1rem);
    font-size: clamp(1.1rem, 1.25vw, 1.5rem);
    line-height: 1.6;
    color: var(--color-ink-900);
}

.about-greeting__sign {
    display: flex !important;
    align-items: center;
    gap: 1.5rem;
    margin-top: clamp(1.5rem, 1.6vw, 1.9rem) !important;
}
.about-greeting__sign span { font-size: .95rem; color: var(--color-ink-900); }
.about-greeting__sign strong { font-weight: 700; }
.about-greeting__signimg { width: min(100%, 230px); height: auto; margin-left: clamp(2rem, 6.4vw, 7.7rem); }

/* 두 장이 어긋나게 겹치는 구성 — 핵심솔루션 소개와 같은 비율 (캡쳐 752 × 645)
   ⚠️ 두 장 모두 absolute + 부모 aspect-ratio. 한 장만 띄우면 부모 높이를 벗어난다. */
.about-greeting__media {
    position: relative;
    display: block;
    aspect-ratio: 752 / 645;
}
.about-greeting__card {
    position: absolute;
    display: block;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(16, 40, 92, .14);
}
.about-greeting__card--back  { top: 0;    right: 0; width: 74.5%; aspect-ratio: 1120 / 1110; }
.about-greeting__card--front { bottom: 0; left: 0;  width: 42.2%; aspect-ratio: 634 / 1008; }
.about-greeting__card picture,
.about-greeting__card img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about-greeting__card > * { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 철학 슬로건 */
.about-slogan {
    margin-top: 1.25rem;
    text-align: center;
    font-size: clamp(.95rem, 1.2vw, 1.15rem);
    font-weight: 600;
    color: var(--color-brand-500);
}

@media (max-width: 900px) {
    .about-greeting { grid-template-columns: 1fr; }
    /* ⚠️ grid 아이템에 margin-inline:auto 를 주면 stretch 가 꺼지고 shrink-to-fit 이 된다.
       안쪽 카드가 % 폭이라 기준이 사라져 122px 까지 쪼그라들었다.
       width:100% 를 함께 줘야 칸을 채우면서 가운데 정렬도 유지된다. */
    .about-greeting__media {
        width: 100%;
        max-width: 520px;
        margin-inline: auto;
    }
}

/* --------------------------------------------------------------------------
   사이트맵
   -------------------------------------------------------------------------- */
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: clamp(2rem, 4vw, 3.5rem);
    list-style: none;
    padding: 0;
    margin: 0;
}
.sitemap-col__title {
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-brand-500);
    color: var(--color-ink-900);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: .06em;
}
.sitemap-col ul { list-style: none; padding: 0; margin-top: 1.25rem; }
.sitemap-col li + li { margin-top: .75rem; }
.sitemap-col a {
    color: var(--color-ink-500);
    font-size: .92rem;
    transition: color .25s;
}
.sitemap-col a:hover { color: var(--color-brand-500); }

/* --------------------------------------------------------------------------
   약관 · 방침 본문
   -------------------------------------------------------------------------- */
.policy { max-width: 60rem; }
.policy__intro {
    padding: 1.5rem 1.75rem;
    background: #f5f7ff;
    border-radius: 14px;
    font-size: .92rem;
    line-height: 1.9;
    color: var(--color-ink-600);
}
.policy h2 {
    margin-top: clamp(2rem, 3.5vw, 3rem);
    padding-bottom: .75rem;
    border-bottom: 1px solid var(--color-ink-200);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-ink-900);
}
.policy p,
.policy ul,
.policy ol { margin-top: 1rem; font-size: .9rem; line-height: 1.9; color: var(--color-ink-500); }
.policy ul { list-style: none; padding: 0; }
.policy ul > li { position: relative; padding-left: 1rem; }
.policy ul > li::before {
    content: ''; position: absolute; left: 0; top: .75em;
    width: 4px; height: 4px; border-radius: 50%; background: var(--color-brand-300);
}
.policy ol { padding-left: 1.25rem; }
.policy ol > li + li { margin-top: .6rem; }
.policy li + li { margin-top: .5rem; }
.policy strong { color: var(--color-ink-900); font-weight: 700; }
.policy a { color: var(--color-brand-500); text-decoration: underline; text-underline-offset: 3px; }
.policy__date {
    margin-top: 2.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-ink-200);
    font-size: .85rem;
    color: var(--color-ink-400);
}

/* GNB 밖 페이지의 현재 위치 표시 — 드롭다운 없이 알약만 */
.sub-gnb__static { margin: 0; }
.sub-gnb__static .sub-gnb__btn { cursor: default; }

/* --------------------------------------------------------------------------
   공통 CTA 띠 (page/_contact.php)
   -------------------------------------------------------------------------- */
.sub-cta {
    position: relative;
    display: flex;
    align-items: center;
    min-height: clamp(22rem, 26vw, 31.25rem);   /* 캡쳐 실측 500 */
    overflow: hidden;
    padding-block: clamp(3.5rem, 5vw, 5rem);
    color: #fff;
    text-align: center;
}
.sub-cta > .site-container { width: 100%; }
.sub-cta__bg { position: absolute; inset: 0; z-index: 0; }
.sub-cta__bg img,
.sub-cta__bg picture { display: block; width: 100%; height: 100%; object-fit: cover; }
/* 캡쳐는 사진 원본 그대로(오버레이 없음). 밝은 하늘 위 흰 글씨가 묻히지 않도록
   글자 뒤쪽 가운데만 아주 옅게 눌러 준다 — 사진 톤은 거의 그대로 남는다. */
.sub-cta::after {
    content: ''; position: absolute; inset: 0; z-index: 1;
    background: radial-gradient(ellipse 45% 55% at 50% 50%, rgba(20, 40, 70, .22), rgba(20, 40, 70, 0) 100%);
}
.sub-cta.is-noimg { background: linear-gradient(120deg, #225cea, #08198f); }
.sub-cta.is-noimg::after { display: none; }
.sub-cta__inner { position: relative; z-index: 2; }
.sub-cta__label {
    font-family: var(--font-display); font-size: .8rem; font-weight: 600; letter-spacing: .16em;
}
.sub-cta__title {
    font-size: clamp(1.5rem, 2.1vw, 2.5rem);   /* 캡쳐 40px · 줄간격 56 */
    font-weight: 700;
    line-height: 1.4;
    text-shadow: 0 2px 16px rgba(10, 30, 60, .25);
}
.sub-cta .ark-btn-outline { margin-top: clamp(1.75rem, 2.9vw, 3.5rem); min-width: 198px; min-height: 56px; padding-inline: 2rem 1.5rem; justify-content: space-between; font-family: var(--font-sans); font-size: 1.125rem; letter-spacing: 0; }

/* --------------------------------------------------------------------------
   반응형
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
    .sub-banner { min-height: 66svh; }
    .sub-gnb { flex-direction: column; align-items: center; gap: .5rem; }
    .sub-gnb__btn { min-width: 220px; }
    .sub-banner__scroll { bottom: 1.5rem; }
}

/* --------------------------------------------------------------------------
   섹션 라벨 (HISTORY / CERTIFICATE …) — 서브 본문 공통
   -------------------------------------------------------------------------- */
.sub-label {
    text-align: center;
    color: var(--color-brand-500);
    font-size: clamp(1rem, 1.25vw, 1.5rem);   /* 가운데 라벨 24px — 캡쳐 글자폭 역산 */
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: 0;
}
.sub-label + .sub-heading { margin-top: .8rem; }   /* 캡쳐 : 라벨 글자 → 제목 글자 53px (라벨 lh1.2 · 제목 lh1.43 기준) */   /* 캡쳐 실측 : 라벨 글자 끝 → 제목 글자 시작 36px */

/* --------------------------------------------------------------------------
   연혁 — 화면 고정 스크롤 타임라인 (www/page/company/history.php)

   기본 상태(= JS 없음 · 768 미만 · 움직임 줄이기)는 고정 없는 일반 목록이다.
   GSAP 이 준비되면 섹션에 .is-pinned 가 붙고, 그때만 아래 "고정 모드" 규칙이 적용된다.
   -------------------------------------------------------------------------- */
.hist { background: #fff; }
.hist__head { padding-block: clamp(3.5rem, 7.8vw, 9.375rem) clamp(1.5rem, 2.6vw, 3rem); }

.hist__title-wrap { position: relative; margin-top: .85rem; }
/* ⚠️ 두 겹(h2 · p)의 줄바꿈이 한 글자라도 다르면 뒤 글자가 유령처럼 비친다.
   태그가 달라 legacy 규칙이 다르게 먹으므로 줄바꿈 관련 속성을 여기서 똑같이 못박는다. */
.hist__title {
    margin: 0;
    padding: 0;
    word-break: keep-all;
    overflow-wrap: break-word;
    font-family: var(--font-sans);
    font-size: clamp(1.5rem, 2.5vw, 3rem);
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -.01em;
    color: var(--color-ink-900);
}
/* 채움 겹 — JS 가 없으면 아예 숨겨 두고 아래 글자가 그대로 보인다 */
.hist__title--fill { display: none; }
html.gsap-ready .hist__title { color: var(--color-ink-200); }
html.gsap-ready .hist__title--fill {
    display: block;
    position: absolute; inset: 0;
    color: var(--color-ink-900);
    clip-path: inset(0 100% 0 0);
}
@media (prefers-reduced-motion: reduce) {
    html.gsap-ready .hist__title { color: var(--color-ink-900); }
    html.gsap-ready .hist__title--fill { display: none; }
}

.hist__stage { position: relative; padding-bottom: clamp(4rem, 8vw, 9rem); }
.hist__stage-inner { position: relative; }
.hist__axis, .hist__nav { display: none; }

.hist__track { margin: 0; padding: 0; list-style: none; }
.hist__era {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding-block: 2rem;
    border-top: 1px solid var(--color-ink-200);
}
.hist__year {
    font-size: clamp(2.5rem, 4.2vw, 5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.02em;
    color: var(--color-brand-500);
}
.hist__lead {
    margin-top: .9rem;
    font-size: clamp(.95rem, 1vw, 1.1875rem);
    font-weight: 500;
    line-height: 1.6;
    color: var(--color-ink-600);
}
.hist__items { margin: 0; padding: 0; list-style: none; }
.hist__items li {
    display: flex;
    gap: clamp(1rem, 1.6vw, 2rem);
    font-size: clamp(.95rem, 1vw, 1.1875rem);
    line-height: 1.5;
    color: var(--color-ink-800);
}
.hist__items li + li { margin-top: clamp(.9rem, 1.3vw, 1.5rem); }
.hist__date { flex: none; width: 5.75em; font-weight: 700; color: var(--color-brand-500); }

/* ── 태블릿 이상 : 가운데 축을 사이에 둔 2단 ─────────────────────────────── */
@media (min-width: 768px) {
    .hist__era {
        grid-template-columns: 1fr 1fr;
        gap: 0;
        align-items: center;
        padding-block: clamp(2.5rem, 4vw, 4rem);
        border-top: 0;
    }
    .hist__side  { padding-right: clamp(2rem, 4.2vw, 5rem); text-align: right; }
    .hist__items { padding-left:  clamp(2rem, 4.2vw, 5rem); }
}

/* ── 고정 모드 (.is-pinned) ─────────────────────────────────────────────── */
.hist.is-pinned .hist__pin {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100svh;
    overflow: hidden;
}
/* 고정된 동안에는 사이트 헤더(약 100px)가 위를 덮으므로 그만큼 내려서 시작한다 */
.hist.is-pinned .hist__head {
    position: relative;
    z-index: 3;
    flex: none;
    padding-block: clamp(7.5rem, 14vh, 9.5rem) clamp(1.25rem, 3vh, 2.5rem);
    background: #fff;
}
/* 제목 아래로 지나가는 글자가 딱 잘리지 않고 스며들게 */
.hist.is-pinned .hist__head::after {
    content: '';
    position: absolute; left: 0; right: 0; top: 100%;
    height: 56px;
    background: linear-gradient(180deg, #fff, rgba(255, 255, 255, 0));
    pointer-events: none;
}
.hist.is-pinned .hist__stage { flex: 1 1 auto; min-height: 0; padding-bottom: 0; overflow: hidden; }
.hist.is-pinned .hist__stage-inner { height: 100%; }
.hist.is-pinned .hist__track { position: absolute; left: 0; right: 0; top: 0; will-change: transform; }
.hist.is-pinned .hist__stage::after {
    content: '';
    position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
    height: 72px;
    background: linear-gradient(0deg, #fff, rgba(255, 255, 255, 0));
    pointer-events: none;
}

.hist.is-pinned .hist__era {
    padding-block: clamp(3rem, 9vh, 6rem);
    opacity: .2;
    transform: scale(.96);
    transition: opacity .5s var(--ease-out-expo), transform .5s var(--ease-out-expo);
}
.hist.is-pinned .hist__era.is-active { opacity: 1; transform: none; }
.hist.is-pinned .hist__year { color: var(--color-ink-900); transition: color .5s; }
.hist.is-pinned .hist__era.is-active .hist__year { color: var(--color-brand-500); }

/* 가운데 축 — 위아래로 옅어지는 선 + 가운데 고정 점 */
.hist.is-pinned .hist__axis {
    display: block;
    position: absolute; left: 50%; top: 0; bottom: 0; z-index: 1;
    width: 2px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, rgba(39, 102, 248, 0), var(--color-brand-500) 50%, rgba(39, 102, 248, 0));
}
.hist__dot {
    position: absolute; left: 50%; top: 50%;
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--color-brand-500);
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0 10px rgba(39, 102, 248, .15);
}

/* 왼쪽 연도 버튼 — 넓은 화면에서만 */
@media (min-width: 1200px) {
    .hist.is-pinned .hist__nav {
        display: flex;
        flex-direction: column;
        gap: .6rem;
        position: absolute; left: 0; top: 8%; z-index: 3;
    }
}
.hist__nav-btn {
    min-width: 9.5rem;
    padding: .7rem 1.4rem;
    border: 0;
    border-radius: 12px;
    background: transparent;
    color: var(--color-ink-500);
    font-size: clamp(.95rem, .95vw, 1.125rem);
    font-weight: 700;
    text-align: left;
    cursor: pointer;
    transition: background .3s, color .3s, box-shadow .3s;
}
.hist__nav-btn:hover { color: var(--color-brand-500); }
.hist__nav-btn.is-active {
    background: var(--color-brand-500);
    color: #fff;
    box-shadow: 0 6px 16px rgba(39, 102, 248, .28);
}
/* 왼쪽 버튼이 있는 폭에서는 연도 글자가 버튼과 겹치지 않게 왼쪽을 비운다 */
@media (min-width: 1200px) {
    .hist.is-pinned .hist__side { padding-left: 11rem; }
}

/* --------------------------------------------------------------------------
   인증서 그리드
   -------------------------------------------------------------------------- */
.cert-grid {
    display: grid;
    /* 시안 실측(1x): 4열, 카드 폭 약 349px */
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: clamp(1.25rem, 2.5vw, 2.25rem);
    margin-top: clamp(2rem, 4vw, 3.5rem);
    list-style: none;
    padding: 0;
}
.cert-card { text-align: center; }
.cert-card__media {
    display: block;
    aspect-ratio: 10 / 14;
    border: 1px solid var(--color-ink-200);
    border-radius: 6px;
    overflow: hidden;
    background: #fff;
    transition: border-color .3s, box-shadow .3s, transform .3s var(--ease-out-expo);
}
.cert-card__img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cert-card:hover .cert-card__media {
    border-color: var(--color-brand-300);
    box-shadow: 0 10px 30px rgba(16, 40, 92, .12);
    transform: translateY(-4px);
}
.cert-card__name {
    display: block;
    margin-top: 1rem;
    font-size: .88rem;
    font-weight: 600;
    color: var(--color-ink-700);
}


/* ==========================================================================
   활용분야(APPLICATION) 4종 공통 — www/page/application/_app_page.php

   기준 : 웹 이미지/서브페이지 캡쳐/부유 쓰레기 차단·부유사·수중 소음·유류.jpg (1920 원본) 실측
     영상 1180 × 664 가운데 · 어두운 띠 494 · 도식 697 / 스텝 700 · CTA 500
     좌측 제목단 : 기본 250..610 (적용 분야·성능표) / 넓게 250..554 (설치 형태·핵심 장점 3장)
   ========================================================================== */

/* 라벨 좌측 정렬 변형 — 기본 .sub-label 은 가운데 정렬 */
.sub-label--left { text-align: left; font-size: clamp(.95rem, 1.05vw, 1.25rem); }   /* 왼쪽 라벨은 20px */
.sub-label--left + .sub-heading,
.sub-label--left + .app-tech__heading { margin-top: .85rem; }
.sub-label--left + .app-block__title { margin-top: .75rem; }

/* 제목 아래 가로선 — ⚠️ legacy default.css 가 hr 을 display:none 으로 숨기므로 block 을 명시 */
.sub-rule,
.proc__rule {
    display: block;
    height: 0;
    margin: clamp(2rem, 3.35vw, 4rem) 0 0;
    border: 0;
    border-top: 1px solid var(--color-ink-300);
}

/* --------------------------------------------------------------------------
   1. 제목 + 영상
   -------------------------------------------------------------------------- */
.app-intro { padding-bottom: clamp(3rem, 5.7vw, 6.85rem); }   /* 캡션 → 띠 118 */
.app-video {
    width: min(100%, 1180px);
    margin: clamp(2rem, 3.4vw, 4rem) auto 0;
    border-radius: 20px;
    overflow: hidden;
    background: #d9d9d9;
}
.app-video > img,
.app-video > picture,
.app-video > .ark-placeholder { display: block; width: 100%; aspect-ratio: 1180 / 664; }
/* 영상 바탕이 흰색이라 본문과 구분되도록 옅은 테두리를 둔다 */
.app-video:has(.app-video__player) { background: #fff; border: 1px solid var(--color-ink-200); }
.app-video__player { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: #fff; }
/* 영상이 들어오기 전 — 시안과 같은 회색 판 (줄무늬·작은 안내 글씨 대신) */
.app-video > .ark-placeholder { background: #d9d9d9; border: 0; }
.app-video > .ark-placeholder > span { font-size: clamp(1.5rem, 3.1vw, 3.75rem); font-weight: 700; color: rgba(0, 0, 0, .12); }

.app-intro__caption {
    margin-top: clamp(1.5rem, 2.8vw, 3.3rem);
    text-align: center;
    font-size: clamp(1.1rem, 1.6vw, 1.875rem);   /* 캡쳐 30px */
    font-weight: 700;
    color: var(--color-brand-500);
}

/* --------------------------------------------------------------------------
   2. 문제 제기 — 어두운 사진 띠 (풀블리드, 494)
   -------------------------------------------------------------------------- */
.app-band {
    position: relative;
    display: flex;
    align-items: center;
    min-height: clamp(22rem, 25.7vw, 30.875rem);
    padding-block: clamp(3rem, 5vw, 5.5rem);
    color: #fff;
    overflow: hidden;
    background: #0d1a2c;
}
.app-band__bg { position: absolute; inset: 0; z-index: 0; }
.app-band__bg img,
.app-band__bg picture { display: block; width: 100%; height: 100%; object-fit: cover; }

/* 사진 자체가 왼쪽이 어둡게 처리돼 있다. 글 쪽만 살짝 더 눌러 작은 화면에서도 대비를 지킨다 */
.app-band::after {
    content: '';
    position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(90deg, rgba(6, 16, 34, .45) 0%, rgba(6, 16, 34, .2) 45%, rgba(6, 16, 34, 0) 70%);
}
.app-band.is-noimg { background: linear-gradient(120deg, #0b1a3d 0%, #10276b 60%, #153abc 100%); }
.app-band.is-noimg::after { display: none; }

.app-band__inner { position: relative; z-index: 2; }
.app-band__title {
    font-size: clamp(1.35rem, 2.03vw, 2.4375rem);   /* 캡쳐 39px · 줄간격 56 */
    font-weight: 700;
    line-height: 1.43;
    letter-spacing: -.01em;
}
.app-band__body {
    margin-top: clamp(1.5rem, 2.6vw, 3.1rem);
    font-size: clamp(.9rem, .89vw, 1.0625rem);   /* 캡쳐 17px · 줄간격 25 */
    line-height: 1.4;
    color: rgba(255, 255, 255, .92);
}

/* --------------------------------------------------------------------------
   3. CORE TECHNOLOGY
   -------------------------------------------------------------------------- */
.sub-section.app-tech { padding-bottom: clamp(3rem, 5.45vw, 6.5625rem); }   /* 도식 → 틴트 105 */
.sub-section.app-tech--roomy { padding-bottom: clamp(4rem, 8.9vw, 10.6875rem); }   /* 유류 : 도식 → 틴트 171 */
.app-tech__heading {
    font-size: clamp(1.25rem, 1.9vw, 2.25rem);
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: -.01em;
    color: var(--color-ink-900);
}

/* 도식 697 / 스텝 700 / 간격 23. 각주는 스텝 아래 오른쪽 칸 */
.app-tech__grid {
    display: grid;
    grid-template-columns: 697fr 700fr;
    column-gap: 23px;
    row-gap: clamp(1.25rem, 1.6vw, 1.9rem);
    align-items: stretch;
    margin-top: clamp(1.75rem, 2.1vw, 2.5rem);
}
.app-tech__figure {
    margin: 0;
    align-self: start;
    border-radius: 20px;
    overflow: hidden;
    background: #faf8fd;
    box-shadow: 0 0 22px rgba(39, 102, 248, .18);
}
.app-tech__figure img,
.app-tech__figure picture,
.app-tech__figure > .ark-placeholder { display: block; width: 100%; height: auto; }

.app-steps {
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 0;
    padding: clamp(1.25rem, 2.2vw, 2.625rem) clamp(1.25rem, 2.1vw, 2.5rem);   /* 캡쳐 : 패널 464 = 42 + 80·70·80·70·80 + 42 */
    list-style: none;
    background: #faf8fd;
    border-radius: 20px;
}
.app-steps__item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: clamp(1rem, 1.6vw, 1.9rem);
    align-items: center;
    padding-block: clamp(1rem, 1.7vw, 2rem);
}
.app-steps__item:first-child { padding-top: 0; }
.app-steps__item:last-child  { padding-bottom: 0; }
.app-steps__item + .app-steps__item { border-top: 1px solid var(--color-ink-300); }

.app-steps__no {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: clamp(56px, 4.2vw, 80px); height: clamp(56px, 4.2vw, 80px);
    border-radius: 50%;
    background: var(--color-brand-500);
    color: #fff;
    line-height: 1.15;
}
.app-steps__no span   { font-size: clamp(.6rem, .7vw, .8125rem); font-weight: 500; }
.app-steps__no strong { font-size: clamp(1rem, 1.15vw, 1.375rem); font-weight: 600; }

.app-steps__title { font-size: clamp(.95rem, 1.05vw, 1.25rem); font-weight: 700; line-height: 1.3; color: var(--color-ink-900); }
.app-steps__desc  { margin-top: .45rem; font-size: clamp(.85rem, .91vw, 1.09375rem); line-height: 1.47; color: var(--color-ink-600); }
.app-steps__hl    { color: var(--color-brand-500); font-weight: 700; }

/* 용어 각주 (수중 소음 저감) — 스텝 패널 아래, 오른쪽 칸 */
.app-note { grid-column: 2; padding-inline: .5rem; }
.app-note__title { font-size: clamp(.9rem, .95vw, 1.125rem); font-weight: 700; color: var(--color-brand-500); }
.app-note__body  { margin-top: .75rem; font-size: clamp(.8rem, .78vw, .9375rem); line-height: 1.5; color: var(--color-ink-600); }

/* --------------------------------------------------------------------------
   4. 가변 섹션 공통 — 좌측 제목단 + 우측 본문
   -------------------------------------------------------------------------- */
.app-block__split {
    display: grid;
    grid-template-columns: 300px 1fr;   /* 캡쳐 실측 : 본문이 610 에서 시작 (250 + 300 + 60) */
    column-gap: 60px;
    align-items: start;
}
.app-block__split--wide { grid-template-columns: 304px 1fr; column-gap: 0; }   /* 본문 554 부터 */
.app-block__stack > .app-block__head + * { margin-top: clamp(2rem, 2.6vw, 3.1rem); }

/* ⚠️ 그리드 아이템의 기본 min-width 는 auto 라, 안에 min-width 가 박힌 요소
   (예: 성능표 min-width)가 있으면 1fr 트랙이 그만큼 벌어져
   좁은 화면에서 페이지 전체가 가로로 넘친다. 0 으로 눌러 overflow-x:auto 가 제 역할을 하게 한다. */
/* 캡쳐 : 표 영역이 622 에서 시작.
   ⚠️ 반드시 미디어쿼리 안에 둔다 — 밖에 두면 특이도(0,2,0)가 아래 1100 이하 1열 규칙(0,1,0)을 이겨
      모바일에서 제목칸 312px + 표칸 0px 이 되어 표 전체가 사라졌다. */
@media (min-width: 1101px) {
    .app-block--perf .app-block__split { grid-template-columns: 312px 1fr; }
}
.app-block__title--36,
.app-block--types .app-block__title { font-size: clamp(1.5rem, 1.9vw, 2.25rem); }   /* 설치 형태만 36px (캡쳐) */
.app-block__split > *,
.app-tech__grid > *,
.sol-intro__grid > * { min-width: 0; }

.app-block__title {
    font-size: clamp(1.5rem, 2.1vw, 2.5rem);   /* 캡쳐 글자폭 역산 40px (핵심 장점 · 단계별 차단 성능 · 적용 분야) */
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -.01em;
    color: var(--color-ink-900);
}

/* 설치 형태 — 340 정사각 카드 3장 / 간격 48, 이름·설명은 카드 아래 */
.app-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.25rem, 2.5vw, 3rem);
    margin: 0; padding: 0; list-style: none;
    text-align: center;
}
.app-types__media {
    display: block;
    border-radius: 20px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 0 20px rgba(39, 102, 248, .06);
}
.app-types__media img,
.app-types__media picture,
.app-types__media > .ark-placeholder { display: block; width: 100%; height: auto; aspect-ratio: 1 / 1; object-fit: cover; }
.app-types__name  { margin-top: clamp(1.1rem, 1.6vw, 1.9rem); font-size: clamp(1.1rem, 1.25vw, 1.5rem); font-weight: 700; }
.app-types__name small { font-size: .7em; font-weight: 600; color: var(--color-ink-900); }
.app-types__desc  { margin-top: .6rem; font-size: clamp(.85rem, .81vw, .96875rem); line-height: 1.42; color: var(--color-ink-600); }

/* 적용 분야 — 2×2, 파란 머리 + 흰 본문 (520 × 158 / 간격 20) */
.app-fields {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 0; padding: 0; list-style: none;
}
.app-fields__item {
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 2px 20px rgba(16, 40, 92, .06);
}
.app-fields__name {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: clamp(3.25rem, 3.4vw, 4.0625rem);
    padding: .5rem 1rem;
    border-radius: 12px;
    background: var(--color-brand-500);
    color: #fff;
    font-size: clamp(.95rem, 1.2vw, 1.4375rem);   /* 캡쳐 23px */
    font-weight: 700;
    text-align: center;
}
.app-fields__desc {
    padding: clamp(1rem, 1.1vw, 1.3125rem) 1rem clamp(.9rem, .95vw, 1.125rem);
    font-size: clamp(.85rem, .91vw, 1.09375rem);   /* 캡쳐 17.5px · 줄간격 25 */
    line-height: 1.43;
    color: var(--color-ink-600);
    text-align: center;
}

/* --------------------------------------------------------------------------
   단계별 차단 성능 — 표
   -------------------------------------------------------------------------- */
.app-perf__lead { font-size: clamp(.95rem, 1.2vw, 1.4375rem); font-weight: 600; color: var(--color-ink-900); line-height: 1.4; }
.app-perf__card {
    margin-top: clamp(1.25rem, 1.6vw, 1.9rem);
    padding: clamp(1.25rem, 1.85vw, 2.25rem);
    background: #fff;
    border-radius: 20px;
}
/* ⚠️ position:relative 필수 — 셀 안의 .sr-only(절대위치)는 가장 가까운 positioned 조상을 기준으로 잡힌다.
   이게 없으면 스크롤 상자 밖으로 빠져나가 클리핑되지 않고, 모바일에서 페이지 전체 폭을 465px 로 늘렸다. */
.app-perf__scroll { position: relative; overflow-x: auto; }
.app-perf__table {
    width: 100%;
    min-width: 640px;
    border-collapse: collapse;
    font-size: clamp(.85rem, .88vw, 1.0625rem);
    text-align: center;
    color: var(--color-ink-900);
}
.app-perf__table th,
.app-perf__table td { padding: .95rem .5rem; vertical-align: middle; }   /* 캡쳐 : 행 간격 56 */
.app-perf__table thead th {
    height: 56px;
    border-top: 2px solid var(--color-ink-900);
    border-bottom: 1px solid var(--color-ink-300);
    background: #f5f5f5;
    font-weight: 600;
}
.app-perf__th-size  { width: 18%; text-align: left !important; padding-left: 1.25rem !important; border-right: 1px solid var(--color-ink-300); }
.app-perf__table thead th.app-perf__th-final { width: 15%; background: var(--color-brand-500); border-top-color: var(--color-brand-500); color: #fff; }
.app-perf__table tbody th {
    text-align: left;
    padding-left: 1.25rem;
    font-weight: 500;
    white-space: nowrap;
    border-right: 1px solid var(--color-ink-300);
}
.app-perf__table tbody tr:first-child > * { padding-top: 1.25rem; }
.app-perf__table tbody td.is-rate  { font-weight: 500; }
.app-perf__table tbody td.is-final { font-weight: 700; }

/* 기포 기둥 — 세 행을 관통 */
.app-perf__deco { width: 8%; padding: .5rem 0 0 !important; color: var(--color-brand-500); vertical-align: bottom !important; }
.app-perf__bubble { display: block; width: 48px; height: auto; margin: 0 auto; }

/* 축 — 발원지(빨강) → 1·2·3차(검정 링) → 확산방향. 선은 갈색에서 노랑으로 옅어진다 */
.app-perf__axis td {
    position: relative;
    padding: 1.45rem .25rem 0;
    font-size: clamp(.8rem, .85vw, 1rem);
    font-weight: 700;
    white-space: nowrap;
}
/* 축 선은 행 배경 하나로 그린다 — 칸마다 선을 그으면 색이 칸 경계에서 끊긴다.
   진한 갈색 → 노랑으로 옅어지고 오른쪽 끝에 작은 화살표 (캡쳐) */
.app-perf__axis {
    background:
        linear-gradient(90deg, #4a3a18 0%, #8a6d2c 45%, #d8c170 80%, #fbeeb7 100%) 0 .6rem / 100% 1.5px no-repeat;
}
.app-perf__axis td:last-child::after {
    content: '';
    position: absolute; right: 0; top: calc(.6rem - 4px);
    border-left: 7px solid #fbeeb7;
    border-top: 4.5px solid transparent;
    border-bottom: 4.5px solid transparent;
}
.app-perf__axis span { position: relative; display: inline-block; }
.app-perf__axis td:last-child { text-align: right; }
.app-perf__axis span::before {
    content: '';
    position: absolute; top: -1.55rem; left: 50%; transform: translateX(-50%);
    width: 13px; height: 13px; border-radius: 50%;
    border: 2.5px solid var(--color-ink-900);
    background: #fff;
}
.app-perf__axis span.is-origin { font-weight: 500; }
.app-perf__axis span.is-origin::before { border: 0; background: #e5484d; box-shadow: 0 0 0 4px rgba(229, 72, 77, .25); }
.app-perf__axis span.is-end { font-weight: 400; font-size: .85em; color: var(--color-ink-600); }
.app-perf__axis span.is-end::before { display: none; }

.app-perf__sum {
    margin-top: clamp(1.25rem, 1.55vw, 1.875rem);
    padding: clamp(.75rem, .83vw, 1rem) 1rem;
    border: 2px solid var(--color-brand-500);
    box-shadow: 0 0 12px rgba(39, 102, 248, .18);
    border-radius: 10px;
    background: #fff;
    text-align: center;
    font-size: clamp(1rem, 1.2vw, 1.4375rem);
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-ink-900);
}
.app-perf__sum strong { color: var(--color-brand-500); }

/* --------------------------------------------------------------------------
   5. CORE BENEFITS — 연보라 판 안에 흰 카드
   -------------------------------------------------------------------------- */
.app-benefits-sec { background: #fff; }
.app-benefits__panel {
    padding: clamp(1rem, 1.9vw, 2.25rem);
    background: #f6f5fd;
    border-radius: 20px;
}
.app-benefits {
    display: grid;
    grid-template-columns: repeat(var(--app-benefit-cols, 3), 1fr);
    gap: 20px;
    margin: 0; padding: 0; list-style: none;
}
.app-benefits__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: clamp(1.5rem, 1.85vw, 2.225rem) clamp(1rem, 1.3vw, 1.5rem) clamp(1.5rem, 1.9vw, 2.25rem);   /* 캡쳐 : 카드 위 → 아이콘 48 */
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(39, 102, 248, .05);
    text-align: center;
}
.app-benefits__ico { display: block; width: clamp(110px, 9.4vw, 180px); }
.app-benefits__ico img,
.app-benefits__ico picture,
.app-benefits__ico > .ark-placeholder { display: block; width: 100%; height: auto; aspect-ratio: 1 / 1; }
.app-benefits__name {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: clamp(1rem, 1.3vw, 1.5625rem);
    font-size: clamp(1.05rem, 1.2vw, 1.4375rem);
    font-weight: 700;
    line-height: 1.45;
}
/* 4장(제목이 두 줄로 접히는 카드가 섞임) — 본문 시작선을 맞춘다 */
.app-benefits[style*="--app-benefit-cols:4"] .app-benefits__item { padding-inline: 1rem; }
.app-benefits[style*="--app-benefit-cols:4"] .app-benefits__name { min-height: 2.9em; margin-top: clamp(1rem, 1.25vw, 1.5rem); }
.app-benefits__desc { margin-top: clamp(.6rem, .75vw, .9rem); font-size: clamp(.85rem, .81vw, .96875rem); line-height: 1.42; color: var(--color-ink-600); }

/* --------------------------------------------------------------------------
   반응형
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
    .app-tech__grid   { grid-template-columns: 1fr; }
    .app-note         { grid-column: 1; }
    .app-block__split,
    .app-block__split--wide { grid-template-columns: 1fr; row-gap: clamp(1.75rem, 3vw, 2.5rem); }
    .app-benefits     { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
    .app-types  { grid-template-columns: 1fr; max-width: 360px; margin-inline: auto; }
    .app-fields { grid-template-columns: 1fr; }
    /* 모바일은 사진 위에 글이 겹치므로 위아래 방향 스크림으로 바꾼다 */
    .app-band::after { background: rgba(6, 16, 34, .55); }
    .app-band__body br { display: none; }
}
@media (max-width: 560px) {
    .app-benefits  { grid-template-columns: 1fr; }
}

/* ==========================================================================
   핵심솔루션 — www/page/solution/core.php
   기준 : 웹 이미지/서브페이지 캡쳐/핵심솔루션.jpg (1920 원본) 실측
   ========================================================================== */
/* 1. 소개 : 텍스트 250..870 / 사진 918..1670 (752 × 640) */
/* 소개 뒤 장식 — 왼쪽 도트 패턴 · 오른쪽 아래 블루 글로우 (캡쳐) */
.sol-intro { position: relative; overflow-x: clip; }
.sol-intro::before,
.sol-intro::after {
    content: '';
    position: absolute;
    z-index: 0;
    pointer-events: none;
    background: center / contain no-repeat;
}
.sol-intro::before { left: -390px; top: 130px; width: 720px; aspect-ratio: 1372 / 1623; background-image: url(../img/arksmith/dot-pattern.webp); opacity: .5; }
.sol-intro::after  { right: -210px; top: 280px; width: 820px; aspect-ratio: 1; background-image: url(../img/arksmith/glow-blob.webp); opacity: .55; }
.sol-intro > .site-container { position: relative; z-index: 1; }
.sol-intro__grid {
    display: grid;
    grid-template-columns: 620fr 752fr;
    column-gap: 48px;
    align-items: center;
}
.sol-intro__lead {
    margin-top: clamp(2rem, 4.3vw, 5.1rem);
    font-size: clamp(1.1rem, 1.25vw, 1.5rem);   /* 캡쳐 24px · 줄간격 27 */
    font-weight: 700;
    line-height: 1.13;
    color: var(--color-ink-900);
}
.sol-intro__text > p + p { margin-top: clamp(1rem, 1.35vw, 1.6rem); }
.sol-intro__text > .sol-intro__lead + p { margin-top: clamp(1.4rem, 1.8vw, 2.15rem); }
.sol-intro__text > p {
    font-size: clamp(.9rem, .91vw, 1.09375rem);   /* 캡쳐 17.5px · 줄간격 25 */
    line-height: 1.43;
    color: var(--color-ink-500);
}
.sol-intro__text > p.sol-intro__lead,
.sol-intro__text > p.sol-intro__closing { color: var(--color-ink-900); font-weight: 700; }


/* 사진 두 장 — 큰 사진(정사각) 우상단, 작은 사진(634:1008) 좌하단이 겹친다.
   ⚠️ 두 장 모두 absolute + 부모 aspect-ratio. 한 장만 띄우면 부모 높이를 벗어나
      모바일에서 다음 섹션과 겹친다. 752:640 은 캡쳐 실측값. */
.sol-intro__media { position: relative; aspect-ratio: 752 / 640; }
.sol-intro__card {
    position: absolute;
    display: block;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(16, 40, 92, .14);
}
.sol-intro__card--back  { top: 0;    right: 0; width: 74.5%; aspect-ratio: 1 / 1; }
.sol-intro__card--front { bottom: 0; left: 0;  width: 42.2%; aspect-ratio: 634 / 1008; }
.sol-intro__card > img,
.sol-intro__card > picture,
.sol-intro__card > .ark-placeholder { display: block; width: 100%; height: 100%; object-fit: cover; }
.sol-intro__card picture img { width: 100%; height: 100%; object-fit: cover; }

/* 소개와 원리 사이 가로선 (캡쳐 y1898) */
.sol-divider {
    display: block;          /* legacy default.css 가 hr 을 숨긴다 */
    height: 0;
    margin: clamp(3rem, 5.6vw, 6.75rem) 0 clamp(4rem, 6.75vw, 8.1rem);
    border: 0;
    border-top: 1px solid var(--color-ink-300);
}

/* 2. SYSTEM PRINCIPLE — 도식 이미지에 흰 여백·테두리가 포함돼 있어 카드 틀만 입힌다 */
.sol-intro { padding-bottom: clamp(3rem, 5.8vw, 6.9rem); }   /* 캡쳐 : STEP 카드 → 틴트 110 */
.sol-intro .sub-label { font-size: clamp(.95rem, 1.05vw, 1.25rem); }   /* SYSTEM PRINCIPLE 은 20px */
.sol-intro .sub-label + .sub-heading { margin-top: .9rem; font-size: clamp(1.5rem, 2.1vw, 2.5rem); }
.sol-principle__figure {
    margin: clamp(1.5rem, 2.05vw, 2.45rem) 0 0;
    border: 1px solid #e3e7f3;
    border-radius: 20px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 4px 24px rgba(16, 40, 92, .06);
}
.sol-principle__figure img,
.sol-principle__figure picture,
.sol-principle__figure > .ark-placeholder { display: block; width: 100%; height: auto; }

.sol-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: clamp(2.5rem, 3.5vw, 4.25rem) 0 0;
    padding: 0;
    list-style: none;
}
.sol-steps__item {
    position: relative;
    padding: clamp(2.25rem, 2.8vw, 3.1rem) clamp(1.25rem, 2vw, 2.5rem) clamp(1.75rem, 2vw, 2.4rem);
    background: #f8f8fc;
    border-radius: 12px;
    text-align: center;
}
.sol-steps__no {
    position: absolute; top: 0; left: 50%; transform: translate(-50%, -50%);
    padding: .45rem 1rem;
    border-radius: 999px;
    background: var(--color-brand-500);
    color: #fff;
    font-size: clamp(.8rem, .9vw, 1.0625rem);
    font-weight: 500;
    white-space: nowrap;
}
.sol-steps__title { font-size: clamp(1.1rem, 1.25vw, 1.5rem); font-weight: 700; color: var(--color-brand-500); }
.sol-steps__en    { margin-top: .4rem; font-size: clamp(.85rem, .9vw, 1.0625rem); font-weight: 500; color: var(--color-ink-900); }
.sol-steps__desc  {
    margin-top: clamp(.9rem, .95vw, 1.125rem);
    padding-top: clamp(1rem, 1.15vw, 1.375rem);
    border-top: 1px solid var(--color-ink-500);
    font-size: clamp(.875rem, .85vw, 1rem);
    line-height: 1.6;
    color: var(--color-ink-600);
}

/* 3·5. 좌측 제목단 옆 리드 문장 (라벨과 같은 줄에서 시작) */
.sol-lead {
    font-size: clamp(.9rem, 1vw, 1.1875rem);
    line-height: 1.55;
    color: var(--color-ink-600);
}

/* 시스템 구성 — 아이콘 + 글, 520 × 234 두 장 */
.sol-parts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: clamp(1.25rem, 1.65vw, 2rem) 0 0;
    padding: 0;
    list-style: none;
}
.sol-parts__item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: clamp(1.25rem, 2vw, 2.5rem);
    align-items: center;
    padding: clamp(1.5rem, 2.2vw, 2.65rem) clamp(1.25rem, 2.6vw, 3.1rem);
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(16, 40, 92, .05);
}
.sol-parts__ico { display: block; width: clamp(88px, 6.8vw, 130px); }
.sol-parts__ico img,
.sol-parts__ico picture,
.sol-parts__ico > .ark-placeholder { display: block; width: 100%; height: auto; }
.sol-parts__name { font-size: clamp(1.05rem, 1.15vw, 1.375rem); font-weight: 700; }
.sol-parts__desc { margin-top: clamp(.9rem, 1.3vw, 1.5rem); font-size: clamp(.8rem, .81vw, .96875rem); line-height: 1.5; color: var(--color-ink-600); }

/* 4. 주요 특징 — 700 × 220 네 장 */
.sol-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: clamp(1.5rem, 1.3vw, 1.6rem) 0 0;
    padding: 0;
    list-style: none;
}
.sol-features__item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: clamp(1.25rem, 2vw, 2.4rem);
    align-items: center;
    min-height: clamp(10rem, 11.5vw, 13.75rem);
    padding: clamp(1.5rem, 2vw, 2.5rem) clamp(1.25rem, 2.3vw, 2.75rem);
    background: #f8f8fc;
    border-radius: 12px;
}
.sol-features__ico { display: block; width: clamp(80px, 7vw, 136px); }
.sol-features__ico img,
.sol-features__ico picture,
.sol-features__ico > .ark-placeholder { display: block; width: 100%; height: auto; }
.sol-features__name { font-size: clamp(1.05rem, 1.22vw, 1.46875rem); font-weight: 700; }
.sol-features__desc { margin-top: clamp(.9rem, 1.2vw, 1.4rem); font-size: clamp(.8rem, .81vw, .96875rem); line-height: 1.5; color: var(--color-ink-600); }

/* 5. 설계 프로세스 — 파란 머리 박스 3열 */
.app-fields--3 { grid-template-columns: repeat(3, 1fr); }
/* 핵심솔루션 설계 프로세스 — 활용분야 페이지 박스보다 작은 글씨 (캡쳐 19 / 15px) */
.app-fields--3 .app-fields__name { min-height: clamp(3rem, 3.4vw, 4.0625rem); font-size: clamp(.95rem, .99vw, 1.1875rem); }
.app-fields--3 .app-fields__desc { padding-block: clamp(1rem, 1.15vw, 1.375rem); font-size: clamp(.8rem, .78vw, .9375rem); line-height: 1.47; }
.app-fields--3.app-fields { margin-top: clamp(1.5rem, 2.1vw, 2.5rem); }

/* 6. 활용분야 — 사진 카드 4열 (340 폭, 사진 680:430) */
.sol-app-block { margin-top: clamp(3.5rem, 4.8vw, 5.8rem); }
.sol-apps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: clamp(2rem, 2.55vw, 3.05rem) 0 0;
    padding: 0;
    list-style: none;
}
.sol-apps__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: clamp(1.5rem, 2.1vw, 2.5rem);
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 20px rgba(16, 40, 92, .05);
    text-align: center;
    transition: box-shadow .3s, transform .35s var(--ease-out-expo);
}
.sol-apps__item:hover { box-shadow: 0 14px 34px rgba(16, 40, 92, .12); transform: translateY(-4px); }
.sol-apps__media { display: block; width: 100%; overflow: hidden; }
.sol-apps__media img,
.sol-apps__media picture,
.sol-apps__media > .ark-placeholder { display: block; width: 100%; height: auto; aspect-ratio: 680 / 430; object-fit: cover; }
.sol-apps__name { margin-top: clamp(1.25rem, 1.8vw, 2.2rem); font-size: clamp(1.05rem, 1.15vw, 1.375rem); font-weight: 700; }
.sol-apps__desc {
    margin-top: clamp(.75rem, 1vw, 1.1rem);
    padding-inline: 1rem;
    font-size: clamp(.85rem, .89vw, 1.0625rem);   /* 캡쳐 17px */
    line-height: 1.5;
    color: var(--color-ink-600);
    flex: 1 1 auto;
}
.sol-apps__item .ark-btn-outline { margin-top: clamp(1.25rem, 1.9vw, 2.25rem); }
/* 캡쳐 : 154 × 46, 16px 굵게, 자간 없음, 원 없는 꺾쇠 */
.sol-apps__btn { min-width: 154px; min-height: 46px; padding: 0 1.25rem 0 1.5rem; gap: .9rem; border-color: var(--color-brand-500); font-size: 1rem; font-weight: 600; letter-spacing: 0; }
.sol-apps__btn .ark-btn-outline__ico { width: 10px; height: 14px; border: 0; opacity: 1; }
.sol-apps__btn .ark-btn-outline__ico svg { width: 7px; height: 12px; }

/* ==========================================================================
   서비스 프로세스 — www/page/solution/process.php
   ========================================================================== */
.proc__lead {
    margin-top: clamp(2.25rem, 4.3vw, 5.2rem);
    font-size: clamp(1.35rem, 1.9vw, 2.25rem);   /* 캡쳐 36px */
    font-weight: 700;
    line-height: 1.5;
    letter-spacing: -.01em;
    color: var(--color-ink-900);
}
.proc__lead strong { color: var(--color-brand-500); font-weight: 700; }

/* 캡쳐 실측 : 원 208 (점선 링 238) · 칸 간격 295 · 목록 알약 228 × 66 */
.proc__list {
    display: grid;
    grid-template-columns: repeat(var(--proc-count, 5), 1fr);
    gap: clamp(1.25rem, 1.2vw, 1.5rem);
    margin: clamp(2rem, 2.4vw, 2.9rem) 0 0;
    padding: 0;
    list-style: none;
}
.proc__step {
    position: relative;
    /* 원 지름은 여기서 한 번만 정한다 — 화살표가 원 중심에 맞으려면
       ::after 도 같은 값을 봐야 하므로 .proc__circle 이 아니라 .proc__step 에 둔다. */
    --proc-circle: clamp(8.5rem, 10.8vw, 13rem);
    --proc-ring:   clamp(.6rem, .78vw, .95rem);
    padding-top: var(--proc-ring);
}
/* 단계 사이 화살표 — 마지막 칸에는 붙이지 않는다 */
.proc__step::after {
    content: '';
    position: absolute;
    top: calc(var(--proc-ring) + var(--proc-circle) / 2);
    right: calc(clamp(1.25rem, 1.2vw, 1.5rem) / -2);
    width: 0; height: 0;
    transform: translate(50%, -50%);
    border-left: 13px solid #8fb0f9;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
}
.proc__step:last-child::after { display: none; }

.proc__circle {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: var(--proc-circle);
    height: var(--proc-circle);
    margin-inline: auto;
    padding: .75rem;
    border-radius: 50%;
    border: 3px solid var(--color-brand-500);
    background: #fff;
    box-shadow: 0 6px 12px rgba(39, 102, 248, .18);
    text-align: center;
}
.proc__circle::before {
    content: '';
    position: absolute;
    inset: calc((var(--proc-ring) + 3px) * -1);
    border: 1px dashed var(--color-brand-500);
    border-radius: 50%;
    opacity: .7;
}
.proc__no    { font-family: var(--font-display); font-size: clamp(.72rem, .75vw, .875rem); font-weight: 500; color: var(--color-brand-500); }
.proc__title { margin-top: .5rem; font-size: clamp(.9rem, 1.05vw, 1.25rem); font-weight: 700; line-height: 1.35; }

.proc__tasks {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(.6rem, .75vw, .9rem);
    margin: clamp(2rem, 2.8vw, 3.4rem) 0 0;
    padding: 0;
    list-style: none;
}
.proc__tasks li {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: min(100%, 228px);
    min-height: clamp(3.5rem, 3.45vw, 4.125rem);
    padding: .6rem .75rem;
    border-radius: 999px;
    background: #f6f5fa;
    font-size: clamp(.75rem, .78vw, .9375rem);
    font-weight: 500;
    line-height: 1.45;
    text-align: center;
    color: var(--color-ink-900);
}
.proc__tasks li small { font-size: .8em; font-weight: 400; color: var(--color-ink-600); }

/* ==========================================================================
   찾아오시는 길 — www/page/support/location.php
   ========================================================================== */
.loc__block + .loc__block {
    margin-top: clamp(2.5rem, 4vw, 4.5rem);
    padding-top: clamp(2.5rem, 4vw, 4.5rem);
    border-top: 1px solid var(--color-ink-200);
}
.loc__block:first-of-type { margin-top: clamp(2rem, 3.4vw, 4rem); }

.loc__head {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
}
.loc__name { font-size: clamp(1.5rem, 1.9vw, 2.25rem); font-weight: 700; line-height: 1.2; }   /* 캡쳐 36px */
.loc__contact {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: clamp(.75rem, 1.4vw, 1.5rem);
    font-size: clamp(.9rem, 1.05vw, 1.25rem);
    color: var(--color-ink-900);
}
.loc__contact > span { display: inline-flex; align-items: center; gap: .5rem; }
.loc__contact > span + span { padding-left: clamp(.75rem, 1.4vw, 1.5rem); border-left: 1px solid var(--color-ink-200); }
.loc__contact b { font-weight: 700; }
.loc__contact a { color: inherit; text-decoration: none; }
.loc__contact a:hover { color: var(--color-brand-500); }

.loc__map {
    position: relative;
    margin-top: clamp(1.25rem, 1.8vw, 2rem);
    border-radius: 14px;
    overflow: hidden;
    background: #eef1f6;
}
.loc__map { border: 1px solid var(--color-ink-300); border-radius: 20px; }
.loc__map img,
.loc__map picture,
.loc__map > .ark-placeholder { display: block; width: 100%; height: auto; aspect-ratio: 1418 / 498; object-fit: cover; }
.loc__pin {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -140%);
    display: block;
    padding: .5rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--color-brand-200);
    background: #fff;
    box-shadow: 0 6px 18px rgba(16, 40, 92, .14);
}
.loc__pin img { display: block; width: clamp(80px, 8vw, 110px); height: auto; }

.loc__foot {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: clamp(1rem, 1.4vw, 1.5rem);
}
.loc__addr {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.25rem;
    font-size: clamp(.9rem, .95vw, 1.125rem);
    font-weight: 700;
    color: var(--color-ink-900);
}
.loc__copy {
    padding: .35rem .7rem;
    border: 0;
    border-radius: 6px;
    background: var(--color-ink-100);
    color: var(--color-ink-500);
    font-size: .72rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .25s, color .25s;
}
.loc__copy:hover { background: var(--color-brand-50); color: var(--color-brand-500); }
.loc__copy.is-done { background: var(--color-brand-500); color: #fff; }

.loc__links { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; padding: 0; list-style: none; }
.loc__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    min-width: clamp(96px, 7vw, 132px);
    min-height: 50px;
    padding: .55rem 1.25rem;
    border: 1px solid var(--color-ink-200);
    border-radius: 999px;
    background: #fff;
    font-size: .8rem;
    font-weight: 600;
    color: var(--color-ink-700);
    text-decoration: none;
    transition: border-color .25s, color .25s, box-shadow .25s;
}
.loc__link:hover { border-color: var(--color-brand-300); color: var(--color-brand-500); box-shadow: 0 4px 14px rgba(16, 40, 92, .08); }
.loc__link-dot { width: 14px; height: 14px; border-radius: 50%; flex: 0 0 auto; }
.loc__link--kakao  .loc__link-dot { background: #fee500; }
.loc__link--google .loc__link-dot { background: #ea4335; }
.loc__link--naver  .loc__link-dot { background: #03c75a; }

/* ==========================================================================
   협력사 — www/page/company/partners.php
   ========================================================================== */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.75rem, 2.3vw, 2.75rem) clamp(1rem, 1.5vw, 1.5rem);
    margin: clamp(2rem, 2.6vw, 3.1rem) 0 0;
    padding: 0;
    list-style: none;
    text-align: center;
}
.partner-grid__logo {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 460 / 120;
    max-width: 460px;
    margin-inline: auto;
}
.partner-grid__logo picture { display: block; width: 100%; }
.partner-grid__img { display: block; width: 100%; height: auto; }
.partner-grid__fallback {
    font-size: clamp(1rem, 1.3vw, 1.35rem);
    font-weight: 700;
    color: var(--color-brand-500);
}
.partner-grid__name {
    display: block;
    margin-top: clamp(1rem, 1.6vw, 1.9rem);
    font-size: clamp(.95rem, 1.05vw, 1.25rem);
    font-weight: 500;
    color: var(--color-ink-900);
}

/* ==========================================================================
   CI — www/page/company/ci.php
   기준 : 웹 이미지/서브페이지 캡쳐/CI.jpg (1920 원본) 실측
   ========================================================================== */
.ci-hero { position: relative; margin: clamp(3rem, 5.7vw, 6.9rem) 0 0; text-align: center; }
/* 로고 뒤 점 패턴 (메인 S2 와 같은 소스) */
.ci-hero__dots {
    position: absolute; left: 50%; top: -6%;
    width: min(62vw, 560px); aspect-ratio: 1372 / 1623;
    transform: translateX(-50%);
    background: url(../img/arksmith/dot-pattern.webp) center / contain no-repeat;
    opacity: .55;
    pointer-events: none;
}
.ci-hero__img { position: relative; display: inline-block; width: min(100%, 500px); height: auto; }
.ci-hero__caption {
    position: relative;
    margin-top: clamp(2rem, 5.1vw, 6.2rem);
    font-size: clamp(1.05rem, 1.25vw, 1.5rem);
    font-weight: 700;
    line-height: 1.55;
    color: var(--color-ink-900);
}
.ci-hero__caption b { color: var(--color-brand-500); }

/* 심벌 · 네이밍 : 글 250..830 / 카드 830..1670 (840 × 300) */
.ci-concept {
    display: grid;
    grid-template-columns: 580fr 840fr;
    align-items: start;
    margin-top: clamp(4rem, 11.6vw, 14rem);   /* 캡쳐 : 문구 → 첫 카드 224 */
}
.ci-concept + .ci-concept { margin-top: 30px; }
.ci-concept__text { padding-top: clamp(.5rem, 1vw, 1.1rem); }
.ci-concept__title { font-size: clamp(1.25rem, 1.5vw, 1.75rem); font-weight: 700; letter-spacing: 0; }
.ci-concept__desc  { margin-top: clamp(1rem, 1.6vw, 1.9rem); font-size: clamp(.85rem, .85vw, 1rem); line-height: 1.6; color: var(--color-ink-600); }
.ci-concept__card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: clamp(12rem, 15.6vw, 18.75rem);
    padding: clamp(1.5rem, 2.5vw, 3rem);
    border: 1px solid #e4e9fb;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 0 20px rgba(39, 102, 248, .08);
}
.ci-concept__symbol { width: min(100%, 336px); height: auto; }

.ci-naming__img { display: block; width: min(100%, 462px); height: auto; }
.ci-naming__ko {
    display: grid;
    grid-template-columns: 30% 1fr 52%;
    width: min(100%, 462px);
    margin-top: clamp(.9rem, 1.3vw, 1.5rem);
    font-size: clamp(.85rem, .9vw, 1.0625rem);
    font-weight: 500;
    color: var(--color-brand-500);
    text-align: center;
}
.ci-naming__ko span:first-child { grid-column: 1; }
.ci-naming__ko span:last-child  { grid-column: 3; }

/* 로고 시스템 — 모눈 스테이지 520 × 300, 버튼 218 × 56 */
.ci-logos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 0; padding: 0; list-style: none;
}
.ci-logos__label { display: flex; align-items: baseline; gap: .35rem; font-size: clamp(.9rem, .95vw, 1.125rem); }
.ci-logos__label b    { font-weight: 600; }
.ci-logos__label span { color: var(--color-ink-600); }

.ci-logos__stage {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 520 / 300;
    margin-top: 1.25rem;
    background-color: #fff;
    background-image:
        linear-gradient(to right, #eef0f4 1px, transparent 1px),
        linear-gradient(to bottom, #eef0f4 1px, transparent 1px);
    background-size: 13px 13px;
}
.ci-logos__img { width: min(62%, 330px); height: auto; }

.ci-logos__dl { display: flex; justify-content: center; gap: clamp(.5rem, 1vw, 1rem); margin-top: 1.25rem; }
.ci-dl {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: .5rem;
    width: min(46%, 218px);
    min-height: 56px;
    padding: 0 1.5rem 0 1.9rem;
    border-radius: 999px;
    background: #fff;
    font-size: .8125rem;
    color: var(--color-ink-600);
    text-decoration: none;
    transition: box-shadow .25s, color .25s;
}
.ci-dl:hover { color: var(--color-brand-500); box-shadow: 0 6px 18px rgba(16, 40, 92, .1); }
.ci-dl b { margin-right: .3rem; font-size: 1.0625rem; font-weight: 700; color: var(--color-ink-900); }
.ci-dl.is-disabled { opacity: .5; cursor: default; }
.ci-dl.is-disabled:hover { box-shadow: none; color: var(--color-ink-600); }
.ci-dl__ico { display: block; width: 16px; height: 16px; margin-left: auto; color: var(--color-brand-500); }
.ci-dl__ico svg { display: block; width: 100%; height: 100%; }

/* 컬러 시스템 — 520 × 258, 칩 48 × 182 */
.ci-colors {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 0; padding: 0; list-style: none;
}
.ci-colors__item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.5rem;
    align-items: stretch;
    padding: clamp(1.5rem, 2.3vw, 2.25rem) clamp(1.25rem, 2.1vw, 2.5rem) clamp(1.5rem, 2.3vw, 2.25rem) clamp(1.25rem, 2.1vw, 2.5rem);
    border-radius: 20px;
    background: #f8f8fc;
}
.ci-colors__name { font-size: clamp(1.1rem, 1.25vw, 1.5rem); font-weight: 700; color: var(--color-brand-500); }
.ci-colors__item:last-child .ci-colors__name { color: #231815; }
.ci-colors__spec {
    display: grid;
    grid-template-columns: 4.25rem 1fr;
    gap: .75rem 0;
    margin-top: clamp(1.5rem, 2.3vw, 2.25rem);
    font-size: clamp(.9rem, .95vw, 1.125rem);
}
.ci-colors__spec dt { font-weight: 700; color: var(--color-ink-900); }
.ci-colors__spec dd { margin: 0; color: var(--color-ink-600); }
.ci-colors__chip { display: block; width: clamp(32px, 2.5vw, 48px); border-radius: 10px; }

/* ==========================================================================
   반응형
   ========================================================================== */
@media (max-width: 1100px) {
    .sol-intro__grid  { grid-template-columns: 1fr; row-gap: clamp(3rem, 6vw, 5rem); }
    /* ⚠️ width:100% 가 없으면 margin-inline:auto 가 그리드 stretch 를 꺼서
       사진 영역이 콘텐츠 폭(≈168px)으로 쪼그라든다. */
    .sol-intro__media { width: 100%; max-width: 560px; margin-inline: auto; }
    .sol-apps         { grid-template-columns: repeat(2, 1fr); }
    .ci-concept       { grid-template-columns: 1fr; row-gap: 1.5rem; }
    .ci-logos,
    .ci-colors        { grid-template-columns: 1fr; }

    /* 프로세스는 가로 스크롤 대신 2열로 접는다 */
    .proc__list       { grid-template-columns: repeat(2, 1fr); }
    .proc__step::after { display: none; }
}
@media (max-width: 760px) {
    .sol-steps        { grid-template-columns: 1fr; }
    .sol-parts,
    .sol-features     { grid-template-columns: 1fr; }
    .app-fields--3    { grid-template-columns: 1fr; }
    .partner-grid     { grid-template-columns: repeat(2, 1fr); }
    .loc__foot        { flex-direction: column; align-items: flex-start; }
    .ci-colors__item  { grid-template-columns: 1fr auto; }
}
@media (max-width: 560px) {
    .sol-apps         { grid-template-columns: 1fr; }
    .proc__list       { grid-template-columns: 1fr; }
    .sol-features__item,
    .sol-parts__item  { grid-template-columns: 1fr; text-align: center; justify-items: center; }
    .sol-features__ico,
    .sol-parts__ico   { margin-inline: auto; }
    .ci-naming        { font-size: 1.35rem; }
}


/* ==========================================================================
   적용사례 — www/page/solution/cases.php
   시안 실측 : 카드 3열, 폭 460 / 간격 27 (248..705 / 734..1189 / 1210..1676)
   ========================================================================== */
.case-total {
    margin-top: clamp(2rem, 3.4vw, 4rem);
    padding-bottom: clamp(.9rem, 1.3vw, 1.25rem);
    border-bottom: 1px solid var(--color-ink-300);
    font-size: .875rem;
    letter-spacing: .04em;
    color: var(--color-ink-500);
}
.case-total b { font-weight: 700; color: var(--color-ink-900); }

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(2rem, 3.3vw, 4rem) clamp(1rem, 1.7vw, 2rem);   /* 캡쳐 : 카드 452, 간격 32 */
    margin: clamp(2rem, 3vw, 3.5rem) 0 0;
    padding: 0;
    list-style: none;
}
.case-card__link { display: block; color: inherit; text-decoration: none; }
.case-card__media {
    display: block;
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-ink-100);
}
.case-card__media > img,
.case-card__media > picture,
.case-card__media > .ark-placeholder {
    display: block; width: 100%; height: auto; aspect-ratio: 452 / 460; object-fit: cover;
    transition: transform .55s var(--ease-out-expo);
}
.case-card__link:hover .case-card__media > img,
.case-card__link:hover .case-card__media > picture { transform: scale(1.05); }

.case-card__tag {
    display: inline-block;
    margin-top: clamp(1rem, 1.4vw, 1.5rem);
    padding: .35rem .75rem;
    border-radius: 6px;
    background: var(--color-brand-50);
    font-size: .72rem;
    font-weight: 600;
    color: var(--color-brand-500);
}
.case-card__title {
    margin-top: .75rem;
    font-size: clamp(1.05rem, 1.15vw, 1.375rem);
    font-weight: 700;
    line-height: 1.45;
}
.case-card__desc {
    margin-top: clamp(1rem, 1.4vw, 1.5rem);
    padding-top: clamp(1rem, 1.4vw, 1.5rem);
    border-top: 1px solid var(--color-ink-200);
    font-size: .8125rem;
    line-height: 1.75;
    color: var(--color-ink-500);
    /* 시안처럼 두 줄에서 말줄임 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-card__date { display: block; margin-top: .9rem; font-size: .75rem; color: var(--color-ink-400); }

@media (max-width: 900px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .case-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   모션 진입 상태

   GSAP 이 살아 있을 때(html.ms-ready)만 숨긴다. JS 가 죽거나 막히면
   아래 규칙 자체가 적용되지 않아 콘텐츠가 그대로 보인다.
   ========================================================================== */
html.ms-ready [data-ms-fade],
html.ms-ready [data-ms-card],
html.ms-ready [data-ms-step],
html.ms-ready [data-ms-band-copy] { will-change: transform, opacity; }

@media (prefers-reduced-motion: reduce) {
    html.ms-ready [data-ms-fade],
    html.ms-ready [data-ms-card],
    html.ms-ready [data-ms-step],
    html.ms-ready [data-ms-band-copy] { will-change: auto; }
}

/* CTA 문의하기 — 캡쳐는 원 없는 꺾쇠 */
.sub-cta .ark-btn-outline__ico { width: 10px; height: 14px; border: 0; opacity: 1; }
.sub-cta .ark-btn-outline__ico svg { width: 7px; height: 12px; }


/* ==========================================================================
   단계별 차단 성능 — 모바일 (760 이하)
   표(9열)는 좁은 화면에서 가로 스크롤밖에 답이 없어, 입경별 카드 + 막대그래프로 바꾼다.
   ========================================================================== */
.app-perf__m { display: none; }

@media (max-width: 760px) {
    .app-perf__scroll { display: none; }
    .app-perf__m { display: block; }
    .app-perf__card { padding: 1.25rem 1rem; }
    .app-perf__lead br { display: none; }

    /* 발원지 → 1차 → 2차 → 3차 → 확산방향 */
    .app-perf__flow {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: .35rem .3rem;
        margin: 0 0 1rem;
        padding: 0 0 1rem;
        list-style: none;
        border-bottom: 1px solid var(--color-ink-200);
        font-size: .75rem;
        font-weight: 600;
        color: var(--color-ink-700);
    }
    .app-perf__flow li { display: inline-flex; align-items: center; gap: .3rem; }
    .app-perf__flow li + li::before { content: '›'; margin-right: .1rem; color: var(--color-ink-400); font-weight: 400; }
    .app-perf__flow li.is-origin::after {
        content: ''; order: -1; width: 7px; height: 7px; border-radius: 50%;
        background: #e5484d; box-shadow: 0 0 0 3px rgba(229, 72, 77, .2);
    }
    .app-perf__flow li.is-end { font-weight: 400; color: var(--color-ink-500); }

    .app-perf__rows { display: grid; gap: .75rem; margin: 0; padding: 0; list-style: none; }
    .app-perf__rows::before { content: '입경별 기포장막 차단율'; display: block; margin-bottom: -.1rem; font-size: .75rem; font-weight: 600; color: var(--color-ink-500); }
    .app-perf__row { padding: 1rem; border-radius: 10px; background: #f7f7fb; }
    .app-perf__row-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: .5rem;
        font-size: .9375rem;
    }
    .app-perf__row-head b { font-weight: 700; color: var(--color-ink-900); }
    .app-perf__row-head span {
        display: inline-flex; align-items: center; gap: .35rem;
        padding: .3rem .65rem;
        border-radius: 999px;
        background: var(--color-brand-500);
        color: #fff;
        font-size: .75rem;
        white-space: nowrap;
    }
    .app-perf__row-head strong { font-size: .875rem; font-weight: 700; }

    .app-perf__bars { display: grid; gap: .5rem; margin: .85rem 0 0; padding: 0; list-style: none; }
    .app-perf__bars li {
        display: grid;
        grid-template-columns: 5.5rem 1fr 2.75rem;
        align-items: center;
        gap: .6rem;
        font-size: .8125rem;
        color: var(--color-ink-600);
    }
    .app-perf__bars strong { text-align: right; font-weight: 600; color: var(--color-ink-900); }
    .app-perf__bar { display: block; height: 8px; border-radius: 999px; background: #e6e9f2; overflow: hidden; }
    .app-perf__bar i { display: block; height: 100%; border-radius: inherit; background: var(--color-brand-500); }

    .app-perf__sum { padding-inline: .75rem; font-size: .875rem; line-height: 1.5; }
}


/* S3 SOLUTION - VIEW MORE 버튼 */

.ark-scard .ark-btn-outline--light {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 24px;

    color: #fff !important;
    background: transparent !important;
    border: 1px solid #fff !important;
    border-radius: 999px !important;
    background-clip: padding-box;

    overflow: hidden;
    isolation: isolate;

    transition:
        background-color 0.35s ease,
        color 0.35s ease,
        border-color 0.35s ease !important;
}

/* 기존 슬라이딩 배경 효과 제거 */
.ark-scard .ark-btn-outline--light::before,
.ark-scard .ark-btn-outline--light::after {
    content: none !important;
    display: none !important;
}

/* 호버 시 배경색 변경 */
.ark-scard .ark-btn-outline--light:hover,
.ark-scard .ark-btn-outline--light:focus-visible {
    background: #fff !important;
    color: #2766F8 !important;
    border-color: #fff !important;
    transform: none;
}

/* 화살표를 감싸는 원형 제거 */
.ark-scard .ark-btn-outline__ico {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 24px !important;
    height: 16px !important;
    flex: 0 0 24px;

    padding: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
}

.ark-scard .ark-btn-outline__ico::before,
.ark-scard .ark-btn-outline__ico::after {
    content: none !important;
    display: none !important;
}

/* 새로운 화살표 */
.ark-scard .ark-btn-outline__ico svg {
    width: 24px !important;
    height: 16px !important;
    display: block;
    overflow: visible;
}

/* 기본 상태에서 화살표 가로선 숨김 */
.ark-scard .ark-arrow-shaft {
    stroke-dasharray: 19;
    stroke-dashoffset: 19;
    transition: stroke-dashoffset 0.35s ease;
}

/* 호버 시 화살표 가로선 등장 */
.ark-scard .ark-btn-outline:hover .ark-arrow-shaft,
.ark-scard .ark-btn-outline:focus-visible .ark-arrow-shaft {
    stroke-dashoffset: 0;
}




/* ==============================
   SUB CTA - 문의하기 버튼
============================== */

.sub-cta .sub-cta__more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;

    box-sizing: border-box;
    width: 198px;
    height: 56px;
    padding: 0 24px;
    margin-top: clamp(1.75rem, 2.9vw, 3.5rem);

    background-color: transparent;
    color: #fff;
    border: 1px solid #fff;
    border-radius: 999px;

    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 600;
    white-space: nowrap;
    text-decoration: none;

    overflow: hidden;

    transition:
        background-color 0.35s ease,
        color 0.35s ease,
        border-color 0.35s ease;
}

/* 호버 시 흰색 배경 + 파란색 텍스트 */
.sub-cta .sub-cta__more-btn:hover,
.sub-cta .sub-cta__more-btn:focus-visible {
    background-color: #fff;
    color: #2766F8;
    border-color: #fff;
}

/* 화살표 영역 */
.sub-cta .sub-cta__more-icon {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 24px;
    height: 16px;
    flex: 0 0 24px;

    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

/* SVG 크기 */
.sub-cta .sub-cta__more-icon svg {
    display: block;
    width: 24px;
    height: 16px;
    overflow: visible;
}

/* 기본 상태: 가로선 숨김 */
.sub-cta .sub-cta__arrow-shaft {
    stroke-dasharray: 19;
    stroke-dashoffset: 19;
    transition: stroke-dashoffset 0.35s ease;
}

/* 호버 시 긴 화살표로 변경 */
.sub-cta .sub-cta__more-btn:hover .sub-cta__arrow-shaft,
.sub-cta .sub-cta__more-btn:focus-visible .sub-cta__arrow-shaft {
    stroke-dashoffset: 0;
}