/* =========================================================
   AtiCore 제품 페이지 공통 스타일
   - 대상: /product/aticore, /product/aticore/web-manager, /product/aticore/faq
   - AtiCore(남색, 클래스 --enterprise)와 AtiCore Web Manager(청록, 클래스 --standard)는 상하위 제품이 아니므로
     우열이 드러나지 않는 두 색 계열을 사용합니다. 클래스 이름은 내부 구분(Enterprise/Standard)을 그대로 씁니다.
   ========================================================= */

.atc-page {
    --atc-primary: #2a62fe;
    --atc-primary-soft: rgba(42, 98, 254, 0.08);
    --atc-standard: #0e7c86;
    --atc-standard-soft: rgba(14, 124, 134, 0.09);
    --atc-enterprise: #4338ca;
    --atc-enterprise-soft: rgba(67, 56, 202, 0.08);
    --atc-ink: #06103b;
    --atc-text: #475467;
    --atc-muted: #667085;
    --atc-line: rgba(27, 55, 115, 0.10);
    --atc-surface: #f8faff;
    --atc-neutral: #f4f6fa;
    --atc-radius-lg: 24px;
    --atc-radius: 18px;
    --atc-shadow: 0 12px 32px rgba(21, 44, 91, 0.06);
    --atc-shadow-sm: 0 4px 14px rgba(21, 44, 91, 0.05);
    --atc-shadow-lg: 0 24px 60px rgba(21, 44, 91, 0.10);
    /* 페이지 강조색: 기본은 파랑(FAQ), 제품 페이지는 제품 색을 씁니다. */
    --atc-accent: var(--atc-primary);
    --atc-accent-soft: var(--atc-primary-soft);
    --atc-accent-line: rgba(42, 98, 254, 0.24);
    --atc-accent-light: #6b8bff;
    --atc-cta-bg: linear-gradient(135deg, #0a1a4f 0%, #1a3fd1 58%, #3f63ff 100%);
    word-break: keep-all;
}

.atc-page--standard {
    --atc-accent: var(--atc-standard);
    --atc-accent-soft: var(--atc-standard-soft);
    --atc-accent-line: rgba(14, 124, 134, 0.26);
    --atc-accent-light: #2fb3a6;
    --atc-cta-bg: linear-gradient(135deg, #062f35 0%, #0e7c86 55%, #2a62fe 100%);
}

.atc-page--enterprise {
    --atc-accent: var(--atc-enterprise);
    --atc-accent-soft: var(--atc-enterprise-soft);
    --atc-accent-line: rgba(67, 56, 202, 0.24);
    --atc-accent-light: #7c6cff;
    --atc-cta-bg: linear-gradient(135deg, #140f4d 0%, #4338ca 55%, #6d7dff 100%);
}

/* ---------- 섹션과 글자 ---------- */

/* 고정 헤더에 앵커 제목이 가려지지 않도록 합니다. */
.atc-page section[id] {
    scroll-margin-top: 100px;
}

.atc-section-soft {
    background:
        radial-gradient(circle at 10% 12%, rgba(42, 98, 254, 0.06), transparent 30%),
        radial-gradient(circle at 92% 6%, rgba(67, 56, 202, 0.05), transparent 28%),
        var(--atc-surface);
}

.atc-section-head {
    max-width: 780px;
    margin: 0 auto 40px;
    text-align: center;
}

.atc-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--atc-accent-soft, var(--atc-primary-soft));
    color: var(--atc-accent, var(--atc-primary));
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.atc-title {
    color: var(--atc-ink);
    font-size: clamp(2rem, 3.4vw, 3rem);
    font-weight: 800;
    line-height: 1.24;
    letter-spacing: -0.03em;
}

.atc-accent {
    color: var(--atc-accent, var(--atc-primary));
}

.atc-lead {
    color: var(--atc-ink);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.75;
}

.atc-text {
    color: var(--atc-text);
    font-size: 15px;
    line-height: 1.85;
}

.atc-h2 {
    margin: 14px 0 12px;
    color: var(--atc-ink);
    font-size: clamp(1.6rem, 2.4vw, 2rem);
    font-weight: 800;
    line-height: 1.32;
    letter-spacing: -0.02em;
}

.atc-footnote {
    max-width: 840px;
    margin: 24px auto 0;
    color: var(--atc-muted);
    font-size: 13px;
    line-height: 1.7;
    text-align: center;
}

.atc-link {
    color: var(--atc-primary);
    font-weight: 700;
    text-decoration: none;
}

.atc-link:hover,
.atc-link:focus {
    text-decoration: underline;
}

.atc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.atc-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 44px;
    padding-left: 20px;
    padding-right: 20px;
    border-radius: 12px;
    font-weight: 700;
}

/* ---------- 상태 표시 ---------- */

.atc-status {
    display: inline-flex;
    align-items: center;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.02em;
    line-height: 1.5;
    white-space: nowrap;
    vertical-align: middle;
}

.atc-status--cond {
    background: #fff4e5;
    color: #9a5b00;
}

.atc-status--beta {
    background: #f3e8ff;
    color: #7e22ce;
}

.atc-status--planned {
    background: #e8f5ff;
    color: #0a5c99;
}

/* ---------- 공통: 범례 ---------- */

.atc-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    color: var(--atc-muted);
    font-size: 12px;
}

.atc-legend span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.atc-legend--center {
    justify-content: center;
    margin-top: 18px;
}

/* ---------- 제품 페이지: 구성도 ---------- */

.atc-diagram {
    margin: 0;
    padding: 26px;
    border: 1px solid var(--atc-line);
    border-radius: 28px;
    background:
        radial-gradient(circle at 92% 6%, var(--atc-accent-soft), transparent 40%),
        linear-gradient(180deg, #ffffff, #f8faff);
    box-shadow: var(--atc-shadow-lg);
}

.atc-diagram__zone {
    padding: 18px;
    border-radius: 20px;
}

.atc-diagram__zone--product {
    border: 1px solid var(--atc-accent-line);
    background: linear-gradient(145deg, var(--atc-accent-soft), rgba(255, 255, 255, 0.7));
}

.atc-diagram__zone--customer {
    border: 1px dashed rgba(71, 84, 103, 0.36);
    background: rgba(251, 252, 254, 0.9);
}

.atc-diagram__zone + .atc-diagram__zone {
    margin-top: 14px;
}

.atc-diagram__zone-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: var(--atc-muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.atc-diagram__zone-label::before {
    content: "";
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--atc-accent);
    box-shadow: 0 0 0 3px var(--atc-accent-soft);
}

.atc-diagram__zone--customer .atc-diagram__zone-label::before {
    background: #98a2b3;
    box-shadow: 0 0 0 3px rgba(152, 162, 179, 0.18);
}

.atc-diagram__nodes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.atc-diagram__zone-desc {
    margin: 12px 0 0;
    color: var(--atc-text);
    font-size: 13px;
    line-height: 1.65;
}

/* 관리 연결: 영역 사이를 점선으로 잇고 연결 내용을 표시합니다. */
.atc-diagram__links {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 10px;
    padding: 16px 0;
}

.atc-diagram__links::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: repeating-linear-gradient(180deg, var(--atc-accent-line) 0 5px, transparent 5px 10px);
}

.atc-diagram__links span {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--atc-line);
    border-radius: 999px;
    background: #fff;
    box-shadow: var(--atc-shadow-sm);
    color: var(--atc-text);
    font-size: 12px;
    font-weight: 700;
}

.atc-diagram__links iconify-icon {
    color: var(--atc-accent);
    font-size: 15px;
}

.atc-diagram__caption {
    margin: 18px 2px 0;
    color: var(--atc-text);
    font-size: 13px;
    line-height: 1.7;
}

.atc-node {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    padding: 9px 12px 9px 9px;
    border: 1px solid var(--atc-line);
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 4px 12px rgba(21, 44, 91, 0.05);
    color: var(--atc-ink);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.4;
}

.atc-node__icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--atc-accent-soft);
    color: var(--atc-accent);
    font-size: 18px;
}

.atc-node--product {
    border-color: var(--atc-accent-line);
}

.atc-node--customer {
    border-style: dashed;
    border-color: rgba(71, 84, 103, 0.40);
}

.atc-node--muted {
    border-style: dashed;
    border-color: rgba(71, 84, 103, 0.28);
    background: rgba(255, 255, 255, 0.6);
    box-shadow: none;
    color: var(--atc-muted);
    font-weight: 600;
}

.atc-node--customer .atc-node__icon,
.atc-node--muted .atc-node__icon {
    background: #f1f3f7;
    color: #7a8599;
}

/* ---------- 공통: 안내 문구 ---------- */

.atc-note {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 0;
    padding: 13px 16px;
    border: 1px solid var(--atc-line);
    border-radius: 14px;
    background: #f7f9fc;
    color: var(--atc-text);
    font-size: 13px;
    line-height: 1.65;
}

.atc-note iconify-icon {
    flex: 0 0 auto;
    margin-top: 1px;
    color: var(--atc-accent);
    font-size: 17px;
}

/* ---------- 기능·원칙 카드 ---------- */

.atc-feature {
    position: relative;
    height: 100%;
    padding: 28px 26px;
    overflow: hidden;
    border: 1px solid var(--atc-line);
    border-radius: var(--atc-radius);
    background: #fff;
    box-shadow: var(--atc-shadow-sm);
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.atc-feature::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 3px;
    background: linear-gradient(90deg, var(--atc-accent), var(--atc-accent-light));
    opacity: 0;
    transition: opacity 0.25s ease;
}

.atc-feature:hover {
    border-color: var(--atc-accent-line);
    box-shadow: 0 18px 40px rgba(21, 44, 91, 0.10);
    transform: translateY(-4px);
}

.atc-feature:hover::before {
    opacity: 1;
}

.atc-feature__icon {
    display: inline-grid;
    place-content: center;
    width: 52px;
    height: 52px;
    margin-bottom: 18px;
    border-radius: 16px;
    background: linear-gradient(145deg, var(--atc-accent-soft), rgba(255, 255, 255, 0.5));
    box-shadow: inset 0 0 0 1px var(--atc-accent-line);
    color: var(--atc-accent);
    font-size: 26px;
}

.atc-feature__title {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 8px;
    margin: 0 0 8px;
    color: var(--atc-ink);
    font-size: 17px;
    font-weight: 800;
    line-height: 1.45;
}

.atc-feature__text {
    margin: 0;
    color: var(--atc-text);
    font-size: 14px;
    line-height: 1.75;
}

.atc-feature__meta {
    margin: 14px 0 0;
    padding-top: 12px;
    border-top: 1px dashed var(--atc-line);
    color: var(--atc-muted);
    font-size: 12px;
    line-height: 1.65;
}

/* 운영 원칙: 기능 카드와 구분되도록 강조색 아이콘과 배경을 씁니다. */
.atc-principles .atc-feature {
    background: linear-gradient(180deg, var(--atc-accent-soft) 0%, #ffffff 48%);
}

.atc-principles .atc-feature__icon {
    background: linear-gradient(145deg, var(--atc-accent), var(--atc-accent-light));
    box-shadow: 0 10px 22px rgba(21, 44, 91, 0.14);
    color: #fff;
}

.atc-group-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 48px 0 20px;
    color: var(--atc-ink);
    font-size: 18px;
    font-weight: 800;
}

.atc-group-title::before {
    content: "";
    flex: 0 0 auto;
    width: 4px;
    height: 18px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--atc-accent), var(--atc-accent-light));
}

.atc-group-title::after {
    content: "";
    flex: 1 1 auto;
    height: 1px;
    background: var(--atc-line);
}

.atc-group-title--first {
    margin-top: 0;
}

/* ---------- 운영 문제와 해결 흐름 ---------- */

.atc-problem {
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
    padding: 30px 28px;
    border: 1px solid var(--atc-line);
    border-radius: var(--atc-radius-lg);
    background: #fff;
    box-shadow: var(--atc-shadow-sm);
}

.atc-problem__head {
    display: flex;
    align-items: center;
    gap: 14px;
}

.atc-problem__index {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(145deg, var(--atc-accent), var(--atc-accent-light));
    box-shadow: 0 10px 22px rgba(21, 44, 91, 0.16);
    color: #fff;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.atc-problem__goal {
    margin: 0;
    color: var(--atc-ink);
    font-size: 19px;
    font-weight: 800;
    line-height: 1.4;
}

.atc-problem__label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    color: #b54708;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.atc-problem__label iconify-icon {
    font-size: 16px;
}

.atc-problem__label--solution {
    margin-bottom: 14px;
    color: var(--atc-accent);
}

.atc-problem__issue {
    padding: 16px 18px;
    border: 1px solid rgba(181, 71, 8, 0.12);
    border-radius: 14px;
    background: #fffaf5;
}

.atc-problem__issue p {
    margin: 0;
    color: var(--atc-text);
    font-size: 14px;
    line-height: 1.7;
}

.atc-problem__solution {
    flex: 1 1 auto;
    padding: 18px 18px 20px;
    border: 1px solid var(--atc-accent-line);
    border-radius: 14px;
    background: linear-gradient(180deg, var(--atc-accent-soft), rgba(255, 255, 255, 0));
}

/* 번호와 연결선으로 단계를 보여 주는 세로 흐름 */
.atc-timeline {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: atc-timeline;
}

.atc-timeline li {
    position: relative;
    min-height: 30px;
    padding: 4px 0 16px 44px;
    color: var(--atc-ink);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.55;
    counter-increment: atc-timeline;
}

.atc-timeline li:last-child {
    padding-bottom: 0;
}

.atc-timeline li::before {
    content: counter(atc-timeline);
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    display: grid;
    place-content: center;
    width: 30px;
    height: 30px;
    border: 2px solid var(--atc-accent);
    border-radius: 50%;
    background: #fff;
    color: var(--atc-accent);
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
}

.atc-timeline li:last-child::before {
    background: var(--atc-accent);
    color: #fff;
}

.atc-timeline li:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 30px;
    bottom: 0;
    left: 14px;
    width: 2px;
    background: var(--atc-accent-line);
}

/* ---------- 단계 흐름(도입·보안 대응·도입 안내) ---------- */

.atc-process {
    display: grid;
    gap: 24px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: atc-process;
}

.atc-process--5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.atc-process__step {
    position: relative;
    min-width: 0;
    counter-increment: atc-process;
}

/* 다음 단계와 잇는 점선 */
.atc-process__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 27px;
    left: 68px;
    right: -16px;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--atc-accent-line) 0 6px, transparent 6px 12px);
}

.atc-process__marker {
    position: relative;
    z-index: 1;
    display: inline-grid;
    place-content: center;
    width: 56px;
    height: 56px;
    margin-bottom: 18px;
    border: 1px solid var(--atc-accent-line);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 10px 24px rgba(21, 44, 91, 0.08);
    color: var(--atc-accent);
    font-size: 26px;
}

.atc-process__num {
    display: block;
    margin-bottom: 6px;
    color: var(--atc-accent);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.atc-process__num::before {
    content: "STEP " counter(atc-process, decimal-leading-zero);
}

.atc-process__title {
    margin: 0 0 8px;
    color: var(--atc-ink);
    font-size: 16px;
    font-weight: 800;
    line-height: 1.45;
}

.atc-process__text {
    margin: 0;
    color: var(--atc-text);
    font-size: 13.5px;
    line-height: 1.75;
}

.atc-process--center .atc-process__step {
    text-align: center;
}

.atc-process--center .atc-process__marker {
    display: grid;
    margin-left: auto;
    margin-right: auto;
}

.atc-process--center .atc-process__step:not(:last-child)::after {
    left: calc(50% + 40px);
    right: calc(-50% + 16px);
}

/* ---------- 제품 비교표 ---------- */

/* 비교 기호 정의용 SVG는 화면에 표시하지 않습니다. */
.atc-sym-sprite {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* ○ 제공, △ 조건부 제공, ✕ 제공하지 않음 */
.atc-sym {
    display: inline-block;
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    vertical-align: middle;
}

.atc-sym--yes {
    color: var(--atc-primary);
}

.atc-sym--cond {
    color: #dc6803;
}

.atc-sym--no {
    width: 20px;
    height: 20px;
    color: #b3bac6;
}

.atc-compare-legend {
    margin: -14px 0 20px;
    font-size: 13px;
    font-weight: 600;
}

.atc-compare-legend .atc-sym {
    width: 18px;
    height: 18px;
}

/* 표는 화면 폭 안에 맞추고 스크롤 영역을 만들지 않습니다. overflow는 둥근 모서리를 자르는 용도입니다. */
.atc-compare-wrap {
    overflow: hidden;
    border: 1px solid var(--atc-line);
    border-radius: var(--atc-radius-lg);
    background: #fff;
    box-shadow: var(--atc-shadow);
}

.atc-compare {
    width: 100%;
    margin: 0;
    border-collapse: collapse;
    table-layout: fixed;
}

.atc-compare__col-feature {
    width: 46%;
}

.atc-compare__col-edition {
    width: 27%;
}

.atc-compare th,
.atc-compare td {
    padding: 15px 24px;
    border-bottom: 1px solid var(--atc-line);
    font-size: 15px;
    line-height: 1.5;
    overflow-wrap: anywhere;
    vertical-align: middle;
}

.atc-compare thead th {
    padding-top: 24px;
    padding-bottom: 20px;
    background: var(--atc-surface);
    color: var(--atc-muted);
    font-size: 13px;
    font-weight: 800;
    text-align: left;
    vertical-align: bottom;
}

.atc-compare thead th.atc-compare__edition {
    position: relative;
    text-align: center;
}

/* 제품 열 제목 위의 색 막대 */
.atc-compare__edition::before {
    content: "";
    position: absolute;
    top: 0;
    left: 16px;
    right: 16px;
    height: 4px;
    border-radius: 0 0 4px 4px;
    background: var(--atc-edition-color);
}

.atc-compare__edition--standard {
    --atc-edition-color: var(--atc-standard);
}

.atc-compare__edition--enterprise {
    --atc-edition-color: var(--atc-enterprise);
}

.atc-compare__edition-name {
    display: block;
    color: var(--atc-edition-color);
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.atc-compare__edition-desc {
    display: block;
    margin-top: 4px;
    color: var(--atc-muted);
    font-size: 12px;
    font-weight: 600;
}

/* 구분 행 */
.atc-compare__group th {
    padding-top: 12px;
    padding-bottom: 12px;
    background: #f5f8ff;
    color: var(--atc-primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-align: left;
}

.atc-compare__group iconify-icon {
    margin-right: 8px;
    font-size: 18px;
    vertical-align: -4px;
}

.atc-compare tbody th[scope="row"] {
    color: var(--atc-ink);
    font-weight: 700;
    text-align: left;
}

.atc-compare td {
    color: var(--atc-text);
    text-align: center;
}

/* 열 순서: AtiCore(남색) → AtiCore Web Manager(청록) */
.atc-compare td:nth-child(2) {
    background: rgba(67, 56, 202, 0.025);
}

.atc-compare td:nth-child(3) {
    background: rgba(14, 124, 134, 0.025);
}

.atc-compare tbody tr:not(.atc-compare__group):hover > * {
    background: #f8faff;
}

.atc-compare tbody:last-child tr:last-child > * {
    border-bottom: 0;
}

.atc-compare__note {
    display: block;
    margin-top: 4px;
    color: var(--atc-muted);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.45;
}

/* ---------- 제품 구성: 제공 영역과 고객 운영 영역 ---------- */

/* 위: AtiCore 제공 영역, 아래: 고객 운영 영역과 선택 연동 */
.atc-ownership {
    display: grid;
    gap: 20px;
}

.atc-ownership__panel {
    padding: 28px;
    border-radius: var(--atc-radius-lg);
}

.atc-ownership__panel--product {
    border: 1px solid var(--atc-accent-line);
    background:
        radial-gradient(circle at 0% 0%, var(--atc-accent-soft), transparent 55%),
        linear-gradient(180deg, #ffffff, #fbfbff);
    box-shadow: var(--atc-shadow);
}

.atc-ownership__panel--customer,
.atc-ownership__panel--optional {
    border: 1px dashed rgba(71, 84, 103, 0.32);
    background: #fbfcfe;
}

.atc-ownership__side {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.atc-ownership__title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 18px;
    color: var(--atc-ink);
    font-size: 17px;
    font-weight: 800;
}

.atc-ownership__title-icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 36px;
    height: 36px;
    border-radius: 11px;
    background: linear-gradient(145deg, var(--atc-accent), var(--atc-accent-light));
    color: #fff;
    font-size: 19px;
}

.atc-ownership__panel--customer .atc-ownership__title-icon,
.atc-ownership__panel--optional .atc-ownership__title-icon {
    background: #e9edf3;
    color: #5b6576;
}

.atc-ownership__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.atc-component {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    height: 100%;
    padding: 18px;
    border: 1px solid var(--atc-line);
    border-radius: 16px;
    background: #fff;
    box-shadow: var(--atc-shadow-sm);
}

.atc-component__icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--atc-accent-soft);
    color: var(--atc-accent);
    font-size: 22px;
}

.atc-component__name {
    margin: 2px 0 4px;
    color: var(--atc-ink);
    font-size: 16px;
    font-weight: 800;
    line-height: 1.4;
}

.atc-component__desc {
    margin: 0;
    color: var(--atc-text);
    font-size: 13.5px;
    line-height: 1.7;
}

.atc-icon-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.atc-icon-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--atc-ink);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.5;
}

.atc-icon-list__icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: #fff;
    box-shadow: inset 0 0 0 1px var(--atc-line);
    color: #5b6576;
    font-size: 17px;
}

/* ---------- 도입 사례 ---------- */

.atc-cases {
    display: grid;
    gap: 24px;
}

.atc-case {
    overflow: hidden;
    border: 1px solid var(--atc-line);
    border-radius: 28px;
    background: #fff;
    box-shadow: var(--atc-shadow);
}

.atc-case__head {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 32px 36px;
    border-bottom: 1px solid var(--atc-line);
    background:
        radial-gradient(circle at 100% 0%, var(--atc-accent-soft), transparent 55%),
        linear-gradient(180deg, #ffffff, #fbfcff);
}

/* 고객 로고 자리: 로고 이미지를 받으면 아이콘 대신 img를 넣습니다. */
.atc-case__logo {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 88px;
    height: 88px;
    border: 1px solid var(--atc-line);
    border-radius: 22px;
    background: #fff;
    box-shadow: var(--atc-shadow-sm);
    color: var(--atc-accent);
    font-size: 40px;
}

/* 익명 고객은 로고 대신 이니셜을 표시합니다. */
.atc-case__logo--initial {
    border-color: transparent;
    background: linear-gradient(145deg, var(--atc-accent), var(--atc-accent-light));
    color: #fff;
    font-size: 38px;
    font-weight: 800;
    line-height: 1;
}

.atc-case__logo img {
    max-width: 68px;
    max-height: 52px;
    object-fit: contain;
}

.atc-case__identity {
    min-width: 0;
}

.atc-case__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.atc-case__tag {
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--atc-accent-soft);
    color: var(--atc-accent);
    font-size: 12px;
    font-weight: 700;
}

.atc-case__customer {
    margin: 0 0 6px;
    color: var(--atc-ink);
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.atc-case__summary {
    margin: 0;
    color: var(--atc-text);
    font-size: 15px;
    line-height: 1.7;
}

.atc-case__body {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.atc-case__block {
    padding: 28px 32px 32px;
}

.atc-case__block + .atc-case__block {
    border-left: 1px solid var(--atc-line);
}

.atc-case__block--result {
    background: linear-gradient(180deg, var(--atc-accent-soft), rgba(255, 255, 255, 0));
}

.atc-case__label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 14px;
    color: var(--atc-ink);
    font-size: 16px;
    font-weight: 800;
}

.atc-case__label-icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 34px;
    height: 34px;
    border-radius: 11px;
    background: var(--atc-accent-soft);
    color: var(--atc-accent);
    font-size: 19px;
}

.atc-case__block p {
    margin: 0;
    color: var(--atc-text);
    font-size: 14px;
    line-height: 1.8;
}

.atc-case__points {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.atc-case__points li {
    position: relative;
    padding-left: 26px;
    color: var(--atc-ink);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.65;
}

.atc-case__points li::before {
    content: "✓";
    position: absolute;
    top: 2px;
    left: 0;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--atc-accent);
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    line-height: 18px;
    text-align: center;
}

/* 도입 사례 페이지: 제품별 묶음과 제품 색 */
.atc-case-group + .atc-case-group {
    margin-top: 56px;
}

.atc-case-group--standard {
    --atc-accent: var(--atc-standard);
    --atc-accent-soft: var(--atc-standard-soft);
    --atc-accent-line: rgba(14, 124, 134, 0.26);
    --atc-accent-light: #2fb3a6;
}

.atc-case-group--enterprise {
    --atc-accent: var(--atc-enterprise);
    --atc-accent-soft: var(--atc-enterprise-soft);
    --atc-accent-line: rgba(67, 56, 202, 0.24);
    --atc-accent-light: #7c6cff;
}

.atc-case-group__title {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 16px;
    margin: 0 0 18px;
    font-size: 14px;
    font-weight: 700;
}

.atc-case-group__edition {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--atc-accent);
    font-size: 20px;
    font-weight: 800;
}

.atc-case-group__edition::before {
    content: "";
    width: 4px;
    height: 20px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--atc-accent), var(--atc-accent-light));
}

/* ---------- 도입 사례 상세: 요약·전후 비교·핵심 기능 ---------- */

.atc-story {
    overflow: hidden;
    border: 1px solid var(--atc-line);
    border-radius: 28px;
    background: #fff;
    box-shadow: var(--atc-shadow);
}

.atc-story__hero {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 32px;
    align-items: center;
    padding: 40px;
    border-bottom: 1px solid var(--atc-line);
    background:
        radial-gradient(circle at 100% 0%, var(--atc-accent-soft), transparent 50%),
        linear-gradient(180deg, #ffffff, #fbfcff);
}

.atc-story__intro,
.atc-spotlight__text {
    min-width: 0;
}

.atc-story__brand {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.atc-story__brand .atc-case__logo {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    font-size: 28px;
}

.atc-story__customer {
    display: block;
    color: var(--atc-ink);
    font-size: 18px;
    font-weight: 800;
}

.atc-story__service {
    display: block;
    color: var(--atc-muted);
    font-size: 13px;
    font-weight: 600;
}

.atc-story__headline {
    margin: 0 0 14px;
    color: var(--atc-ink);
    font-size: clamp(1.4rem, 2.2vw, 1.9rem);
    font-weight: 800;
    line-height: 1.38;
    letter-spacing: -0.02em;
}

/* 고객 인용 제목과 말한 사람 */
.atc-story__quote {
    position: relative;
    margin: 0 0 18px;
    padding: 4px 0 0 22px;
    border-left: 4px solid var(--atc-accent);
}

.atc-story__quote blockquote {
    margin: 0;
}

.atc-story__quote .atc-story__headline {
    margin-bottom: 14px;
}

.atc-story__speaker {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--atc-muted);
    font-size: 14px;
    font-weight: 700;
}

.atc-story__avatar {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 40px;
    height: 40px;
    overflow: hidden;
    border-radius: 50%;
    background: linear-gradient(145deg, var(--atc-accent-soft), #e9ecf6);
    color: var(--atc-accent);
}

.atc-story__avatar svg {
    width: 34px;
    height: 34px;
    margin-top: 8px;
    opacity: 0.85;
}

.atc-story__lead {
    margin: 0;
    color: var(--atc-text);
    font-size: 15px;
    line-height: 1.85;
}

.atc-story__facts {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 20px;
    border: 1px solid var(--atc-line);
    border-radius: 20px;
    background: #fff;
    box-shadow: var(--atc-shadow-sm);
}

.atc-story__facts div {
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 10px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--atc-line);
}

.atc-story__facts div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.atc-story__facts dt {
    color: var(--atc-muted);
    font-size: 13px;
    font-weight: 700;
}

.atc-story__facts dd {
    margin: 0;
    color: var(--atc-ink);
    font-size: 14px;
    font-weight: 700;
}

.atc-story__shift {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
    padding: 28px 40px;
    border-bottom: 1px solid var(--atc-line);
}

.atc-story__state {
    padding: 18px 20px;
    border-radius: 16px;
}

.atc-story__state p {
    margin: 0;
    font-size: 14px;
    line-height: 1.75;
}

.atc-story__state--before {
    border: 1px solid rgba(181, 71, 8, 0.14);
    background: #fffaf5;
    color: var(--atc-text);
}

.atc-story__state--after {
    border: 1px solid var(--atc-accent-line);
    background: linear-gradient(145deg, var(--atc-accent-soft), rgba(255, 255, 255, 0.7));
    color: var(--atc-ink);
}

.atc-story__state-label {
    display: inline-block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.atc-story__state--before .atc-story__state-label {
    color: #b54708;
}

.atc-story__state--after .atc-story__state-label {
    color: var(--atc-accent);
}

.atc-story__shift-arrow {
    display: inline-grid;
    align-self: center;
    place-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(145deg, var(--atc-accent), var(--atc-accent-light));
    color: #fff;
    font-size: 20px;
}

/* 고객이 꼽은 핵심 기능 */
.atc-spotlight {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
    padding: 44px 40px;
    border-bottom: 1px solid var(--atc-line);
    background: linear-gradient(180deg, #fbfbff, #ffffff);
}

.atc-spotlight__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--atc-accent);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
}

.atc-spotlight__title {
    margin: 14px 0 10px;
    color: var(--atc-ink);
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.atc-spotlight__desc {
    margin: 0 0 22px;
    color: var(--atc-text);
    font-size: 15px;
    line-height: 1.85;
}

.atc-spotlight__subtitle {
    margin: 0 0 12px;
    color: var(--atc-ink);
    font-size: 15px;
    font-weight: 800;
}

.atc-check-areas {
    display: grid;
    gap: 10px;
    margin: 0 0 20px;
    padding: 0;
    list-style: none;
}

.atc-check-areas li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--atc-text);
    font-size: 14px;
    line-height: 1.6;
}

.atc-check-areas strong {
    display: block;
    color: var(--atc-ink);
    font-size: 14px;
    font-weight: 800;
}

.atc-check-areas__icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 36px;
    height: 36px;
    border-radius: 11px;
    background: var(--atc-accent-soft);
    color: var(--atc-accent);
    font-size: 19px;
}

/* 제품 화면 예시 */
.atc-mock {
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--atc-accent-line);
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 24px 50px rgba(21, 44, 91, 0.12);
}

.atc-mock__bar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 11px 16px;
    background: linear-gradient(90deg, #0d1330, #1f2a5c);
}

.atc-mock__dots {
    display: inline-flex;
    gap: 6px;
}

.atc-mock__dots span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
}

.atc-mock__title {
    color: rgba(255, 255, 255, 0.88);
    font-size: 12px;
    font-weight: 700;
}

.atc-mock__flow {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 18px;
    list-style: none;
}

.atc-mock__flow li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--atc-line);
    border-radius: 14px;
    background: var(--atc-surface);
}

.atc-mock__flow li > div {
    flex: 1 1 auto;
    min-width: 0;
}

.atc-mock__flow strong {
    display: block;
    color: var(--atc-ink);
    font-size: 14px;
    font-weight: 800;
}

.atc-mock__flow li span:not([class]) {
    display: block;
    color: var(--atc-muted);
    font-size: 12px;
    line-height: 1.5;
}

.atc-mock__step-icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 36px;
    height: 36px;
    border-radius: 11px;
    background: var(--atc-accent-soft);
    color: var(--atc-accent);
    font-size: 19px;
}

.atc-mock__step-icon--warn {
    background: #fff1f0;
    color: #d92d20;
}

.atc-mock__step-icon--ok {
    background: #ecfdf3;
    color: #079455;
}

.atc-mock__chip {
    flex: 0 0 auto;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
}

.atc-mock__chip--neutral {
    background: #eef2f7;
    color: #475467;
}

.atc-mock__chip--warn {
    background: #fff1f0;
    color: #d92d20;
}

.atc-mock__chip--ok {
    background: #ecfdf3;
    color: #079455;
}

.atc-mock__caption {
    padding: 0 18px 14px;
    color: var(--atc-muted);
    font-size: 11px;
}

.atc-story__more,
.atc-story__results {
    padding: 36px 40px;
}

.atc-story__more {
    border-bottom: 1px solid var(--atc-line);
}

.atc-story__more-title {
    margin: 0 0 18px;
    color: var(--atc-ink);
    font-size: 18px;
    font-weight: 800;
}

.atc-story__points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 32px;
}

/* ---------- 관련 제품 안내 ---------- */

.atc-related {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 24px;
    align-items: center;
    padding: 32px 36px;
    border: 1px solid rgba(14, 124, 134, 0.22);
    border-radius: 24px;
    background:
        radial-gradient(circle at 0% 0%, rgba(14, 124, 134, 0.10), transparent 50%),
        #fff;
    box-shadow: var(--atc-shadow-sm);
}

.atc-related__icon {
    display: inline-grid;
    place-content: center;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(145deg, var(--atc-standard), #2fb3a6);
    color: #fff;
    font-size: 28px;
}

.atc-related__body {
    min-width: 0;
}

.atc-related__label {
    display: block;
    margin-bottom: 4px;
    color: var(--atc-standard);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.atc-related__title {
    margin: 0 0 6px;
    color: var(--atc-ink);
    font-size: 20px;
    font-weight: 800;
    line-height: 1.4;
}

.atc-related__text {
    margin: 0;
    color: var(--atc-text);
    font-size: 14px;
    line-height: 1.75;
}

.atc-related__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.atc-related__actions .btn {
    min-height: 44px;
    border-radius: 12px;
    font-weight: 700;
}

/* ---------- FAQ: 페이지 상단 제품 비교표 ---------- */

.atc-faq-compare-section {
    background: #fff;
}

.atc-faq-compare {
    max-width: 1040px;
    margin: 0 auto;
}

.atc-faq-compare .atc-compare-legend {
    margin: 0 0 16px;
}

.atc-faq-compare .atc-footnote {
    margin: 16px 0 0;
}

/* ---------- 문의 영역 ---------- */

.atc-cta {
    position: relative;
    overflow: hidden;
    padding: 60px 40px;
    border-radius: 28px;
    background: var(--atc-cta-bg);
    box-shadow: 0 24px 60px rgba(21, 44, 91, 0.18);
    color: #fff;
    text-align: center;
}

/* 배경의 옅은 격자와 빛 번짐 */
.atc-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px);
    background-size: 36px 36px;
    -webkit-mask-image: radial-gradient(circle at 50% 0%, #000, transparent 72%);
    mask-image: radial-gradient(circle at 50% 0%, #000, transparent 72%);
}

.atc-cta::after {
    content: "";
    position: absolute;
    right: -80px;
    bottom: -120px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    pointer-events: none;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.18), transparent 70%);
}

.atc-cta > * {
    position: relative;
    z-index: 1;
}

.atc-cta .atc-h2 {
    color: #fff;
}

.atc-cta .atc-text {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    color: rgba(255, 255, 255, 0.84);
}

.atc-cta .atc-actions {
    justify-content: center;
}

.atc-cta .btn-primary {
    --bs-btn-color: #0a1a4f;
    --bs-btn-bg: #fff;
    --bs-btn-border-color: #fff;
    --bs-btn-hover-color: #0a1a4f;
    --bs-btn-hover-bg: #eef2ff;
    --bs-btn-hover-border-color: #eef2ff;
    --bs-btn-active-color: #0a1a4f;
    --bs-btn-active-bg: #e0e7ff;
    --bs-btn-active-border-color: #e0e7ff;
    border-color: #fff;
    background: #fff;
    color: #0a1a4f;
}

.atc-cta .btn-primary:hover,
.atc-cta .btn-primary:focus {
    border-color: #eef2ff;
    background: #eef2ff;
    color: #0a1a4f;
}

.atc-cta .btn-outline-primary {
    --bs-btn-color: #fff;
    --bs-btn-border-color: rgba(255, 255, 255, 0.5);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: rgba(255, 255, 255, 0.18);
    --bs-btn-hover-border-color: #fff;
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: rgba(255, 255, 255, 0.24);
    --bs-btn-active-border-color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.atc-cta .btn-outline-primary:hover,
.atc-cta .btn-outline-primary:focus {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

.atc-cta .atc-footnote {
    color: rgba(255, 255, 255, 0.78);
}

.atc-cta .atc-link {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ---------- 대표 소개 영상 ---------- */

.atc-video {
    max-width: 960px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--atc-radius-lg);
    background: #0b1020;
    box-shadow: 0 18px 45px rgba(20, 45, 105, 0.12);
}

.atc-video iframe {
    border: 0;
}

/* ---------- 기능 화면 슬라이드 ---------- */

.atc-slides {
    display: grid;
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
    gap: 28px;
}

.atc-slides__tabs {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.atc-slides__tab {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--atc-line);
    border-radius: 14px;
    background: #fff;
    color: var(--atc-text);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.45;
    text-align: left;
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.atc-slides__tab:hover {
    border-color: rgba(42, 98, 254, 0.30);
}

.atc-slides__tab:focus-visible,
.atc-slides__nav:focus-visible {
    outline: 3px solid rgba(42, 98, 254, 0.35);
    outline-offset: 2px;
}

.atc-slides__tab.is-active {
    border-color: var(--atc-accent, var(--atc-primary));
    background: var(--atc-accent-soft, var(--atc-primary-soft));
    color: var(--atc-ink);
}

.atc-slides__tab-icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--atc-neutral);
    color: var(--atc-accent, var(--atc-primary));
    font-size: 20px;
}

.atc-slides__tab.is-active .atc-slides__tab-icon {
    background: var(--atc-accent, var(--atc-primary));
    color: #fff;
}

.atc-slides__viewer {
    min-width: 0;
}

.atc-slides__frame {
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--atc-radius);
    background: #fff;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
}

.atc-slides__bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    background: #f8f9fa;
}

.atc-slides__bar span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ff5f56;
}

.atc-slides__bar span:nth-child(2) {
    background: #ffbd2e;
}

.atc-slides__bar span:nth-child(3) {
    background: #27c93f;
}

.atc-slides__bar em {
    margin-left: 8px;
    color: var(--atc-muted);
    font-size: 12px;
    font-style: normal;
    font-weight: 600;
}

.atc-slides__screen {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 16 / 9;
    background: #0b1020;
}

.atc-slides__screen img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.atc-slides__placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, var(--atc-accent-soft, var(--atc-primary-soft)), #f8faff);
    color: var(--atc-accent, var(--atc-primary));
    font-size: 16px;
    font-weight: 800;
}

.atc-slides__placeholder iconify-icon {
    font-size: 56px;
}

.atc-slides__body {
    padding: 24px 4px 0;
}

.atc-slides__title {
    margin: 0 0 8px;
    color: var(--atc-ink);
    font-size: 22px;
    font-weight: 800;
    line-height: 1.4;
}

.atc-slides__desc {
    margin: 0 0 18px;
    color: var(--atc-text);
    font-size: 15px;
    line-height: 1.8;
}

.atc-slides__features {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.atc-slides__features li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.atc-slides__feature-icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--atc-neutral);
    color: var(--atc-accent, var(--atc-primary));
    font-size: 20px;
}

.atc-slides__features strong {
    display: block;
    color: var(--atc-ink);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.45;
}

.atc-slides__features small {
    display: block;
    color: var(--atc-muted);
    font-size: 12px;
}

.atc-slides__controls {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 18px;
}

.atc-slides__nav {
    display: inline-grid;
    place-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--atc-line);
    border-radius: 50%;
    background: #fff;
    color: var(--atc-ink);
    font-size: 22px;
    line-height: 1;
}

.atc-slides__nav:hover {
    border-color: var(--atc-accent, var(--atc-primary));
    color: var(--atc-accent, var(--atc-primary));
}

.atc-slides__nav.swiper-button-disabled {
    opacity: 0.4;
    cursor: default;
}

.atc-slides__counter {
    color: var(--atc-muted);
    font-size: 13px;
    font-weight: 700;
}

/* ---------- FAQ (ARIA FAQ와 같은 구성) ---------- */

.atc-faq-section {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 12% 18%, rgba(42, 98, 254, 0.08), transparent 28%),
        radial-gradient(circle at 92% 8%, rgba(107, 126, 255, 0.07), transparent 26%),
        #f8faff;
}

.atc-faq-section::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(22, 54, 130, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(22, 54, 130, 0.025) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.45), transparent 72%);
}

.atc-faq-section .container {
    position: relative;
    z-index: 1;
}

.atc-faq-intro {
    position: sticky;
    top: 118px;
    padding: 34px;
    border: 1px solid rgba(42, 98, 254, 0.12);
    border-radius: 24px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(247, 250, 255, 0.96));
    box-shadow: 0 18px 45px rgba(20, 45, 105, 0.08);
}

.atc-faq-icon {
    display: inline-grid;
    place-content: center;
    width: 48px;
    height: 48px;
    border-radius: 15px;
    background: linear-gradient(145deg, #2a62fe, #557cff);
    color: #fff;
    box-shadow: 0 10px 24px rgba(42, 98, 254, 0.22);
}

.atc-faq-title {
    color: var(--atc-ink);
    font-size: clamp(2rem, 3.2vw, 3rem);
    line-height: 1.18;
    letter-spacing: -0.035em;
}

.atc-faq-desc {
    color: var(--atc-muted);
    line-height: 1.85;
}

.atc-faq-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}

.atc-faq-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 10px;
    border: 1px solid rgba(42, 98, 254, 0.11);
    border-radius: 999px;
    background: #fff;
    color: var(--atc-muted);
    font-size: 12px;
    font-weight: 600;
}

.atc-faq-intro .atc-actions {
    margin-top: 28px;
}

.atc-faq-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
    padding: 6px;
    border: 1px solid var(--atc-line);
    border-radius: 16px;
    background: #fff;
}

.atc-faq-tabs .nav-link {
    padding: 10px 16px;
    border: 0;
    border-radius: 12px;
    color: var(--atc-text);
    font-size: 14px;
    font-weight: 700;
}

.atc-faq-tabs .nav-link:hover {
    color: var(--atc-primary);
}

.atc-faq-tabs .nav-link.active {
    background: var(--atc-primary);
    color: #fff;
}

.atc-faq-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.atc-faq-list.accordion {
    --bs-accordion-border-width: 0;
    --bs-accordion-border-color: transparent;
    --bs-accordion-border-radius: 18px;
    --bs-accordion-inner-border-radius: 18px;
}

.atc-faq-list .accordion-item {
    overflow: hidden;
    margin: 0;
    border: 1px solid rgba(27, 55, 115, 0.10) !important;
    border-radius: 18px !important;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 8px 26px rgba(21, 44, 91, 0.045);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.atc-faq-list .accordion-item:hover {
    transform: translateY(-1px);
    border-color: rgba(42, 98, 254, 0.22) !important;
    box-shadow: 0 12px 30px rgba(21, 44, 91, 0.07);
}

.atc-faq-list .accordion-button {
    gap: 16px;
    min-height: 76px;
    padding: 18px 22px;
    border-radius: 18px !important;
    background: transparent;
    color: #243454;
    font-size: 16px;
    font-weight: 700 !important;
    line-height: 1.55;
    box-shadow: none !important;
}

.atc-faq-list .accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, rgba(42, 98, 254, 0.095), rgba(106, 125, 255, 0.055));
    color: #1648c7;
}

.atc-faq-number {
    display: inline-grid;
    flex: 0 0 auto;
    place-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: #f0f4ff;
    color: var(--atc-primary);
    font-size: 12px;
    font-weight: 800;
    transition: all 0.2s ease;
}

.atc-faq-list .accordion-button:not(.collapsed) .atc-faq-number {
    background: var(--atc-primary);
    color: #fff;
    box-shadow: 0 7px 16px rgba(42, 98, 254, 0.18);
}

.atc-faq-question {
    flex: 1 1 auto;
    min-width: 0;
}

.atc-faq-list .accordion-body {
    padding: 4px 24px 25px 72px;
    color: #5c6880;
    font-size: 15px;
    line-height: 1.85;
}

.atc-faq-list .accordion-body::before {
    content: "";
    display: block;
    height: 1px;
    margin: 0 0 20px;
    background: linear-gradient(90deg, rgba(42, 98, 254, 0.15), rgba(42, 98, 254, 0));
}

.atc-faq-list .accordion-body p {
    margin-bottom: 14px;
}

.atc-faq-list .accordion-body p:last-child {
    margin-bottom: 0;
}

.atc-faq-list .accordion-body strong {
    color: #23345c;
    font-weight: 700;
}

.atc-faq-steps {
    margin: 0 0 14px;
    padding-left: 20px;
    list-style: decimal;
}

.atc-faq-steps li {
    margin-bottom: 6px;
    padding-left: 4px;
}

.atc-faq-steps li:last-child {
    margin-bottom: 0;
}

.atc-faq-steps li::marker {
    color: var(--atc-primary);
    font-weight: 700;
}

/* ---------- 움직임 줄이기 설정 ---------- */

@media (prefers-reduced-motion: reduce) {
    .atc-feature,
.atc-feature::before {
        transition: none;
    }

    .atc-feature:hover {
        transform: none;
    }
}

/* ---------- 반응형 ---------- */

@media (max-width: 1199.98px) {
    .atc-ownership__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991.98px) {
    .atc-slides,
.atc-ownership__side,
.atc-case__body {
        grid-template-columns: 1fr;
    }

    .atc-case__block + .atc-case__block {
        border-top: 1px solid var(--atc-line);
        border-left: 0;
    }

    .atc-story__hero,
    .atc-spotlight,
    .atc-story__shift {
        grid-template-columns: 1fr;
    }

    .atc-story__shift-arrow {
        justify-self: center;
        transform: rotate(90deg);
    }

    .atc-related {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .atc-related__actions {
        grid-column: 1 / -1;
    }

    .atc-slides__tabs {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 6px;
    }

    .atc-slides__tab {
        flex: 0 0 auto;
        width: auto;
    }

    /* 단계 흐름은 세로로 바꾸고 연결선도 세로로 잇습니다. */
    .atc-process--5 {
        grid-template-columns: minmax(0, 1fr);
        gap: 0;
    }

    .atc-process__step,
    .atc-process--center .atc-process__step {
        display: grid;
        grid-template-columns: 56px minmax(0, 1fr);
        column-gap: 18px;
        align-content: start;
        padding-bottom: 26px;
        text-align: left;
    }

    .atc-process__step:last-child,
    .atc-process--center .atc-process__step:last-child {
        padding-bottom: 0;
    }

    .atc-process__marker,
    .atc-process--center .atc-process__marker {
        grid-row: 1 / span 3;
        margin: 0;
    }

    .atc-process__num {
        margin-top: 6px;
    }

    .atc-process__step:not(:last-child)::after,
    .atc-process--center .atc-process__step:not(:last-child)::after {
        top: 64px;
        bottom: 8px;
        left: 27px;
        right: auto;
        width: 2px;
        height: auto;
        background: repeating-linear-gradient(180deg, var(--atc-accent-line) 0 6px, transparent 6px 12px);
    }

    .atc-faq-intro {
        position: static;
        padding: 28px;
        margin-bottom: 8px;
    }

    .atc-faq-list .accordion-body {
        padding-left: 24px;
    }
}

@media (max-width: 767.98px) {
    .atc-diagram {
        padding: 22px 18px;
    }

    .atc-problem,
.atc-ownership__panel {
        padding: 24px 20px;
    }

    .atc-case__head {
        padding: 24px 20px;
    }

    .atc-case__block {
        padding: 22px 20px 24px;
    }

    .atc-story__hero,
    .atc-story__shift,
    .atc-spotlight,
    .atc-story__more,
    .atc-story__results {
        padding: 26px 20px;
    }

    .atc-story__points {
        grid-template-columns: 1fr;
    }

    .atc-mock__flow {
        padding: 14px;
    }

    .atc-cta {
        padding: 40px 20px;
    }

    .atc-compare th,
    .atc-compare td {
        padding: 14px 16px;
        font-size: 14px;
    }
}

@media (max-width: 575.98px) {
    .atc-actions .btn {
        flex: 1 1 100%;
    }

    

    .atc-ownership__grid,
.atc-icon-list {
        grid-template-columns: 1fr;
    }

    

    .atc-case__head {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .atc-case__logo {
        width: 68px;
        height: 68px;
        border-radius: 18px;
        font-size: 32px;
    }

    /* 비교표: 좁은 화면에서도 세 열을 유지하고 제품 설명은 숨깁니다. */
    .atc-compare__col-feature {
        width: 44%;
    }

    .atc-compare__col-edition {
        width: 28%;
    }

    .atc-compare th,
    .atc-compare td {
        padding: 12px 8px;
        font-size: 13px;
    }

    .atc-compare thead th {
        padding-top: 18px;
        padding-bottom: 14px;
    }

    .atc-compare tbody th[scope="row"],
    .atc-compare thead th:first-child,
    .atc-compare__group th {
        padding-left: 14px;
    }

    .atc-compare__edition::before {
        left: 8px;
        right: 8px;
    }

    .atc-compare__edition-name {
        font-size: 14px;
    }

    .atc-compare__edition-desc {
        display: none;
    }

    .atc-compare__note {
        font-size: 11px;
    }

    .atc-sym {
        width: 20px;
        height: 20px;
    }

    .atc-sym--no {
        width: 17px;
        height: 17px;
    }

    

    

    

    

    

    

    

    

    

    

    

    

    .atc-slides__features {
        grid-template-columns: 1fr;
    }

    .atc-slides__title {
        font-size: 19px;
    }

    .atc-faq-intro {
        padding: 24px 20px;
        border-radius: 20px;
    }

    .atc-faq-title {
        font-size: 2rem;
    }

    .atc-faq-list .accordion-button {
        gap: 12px;
        min-height: 68px;
        padding: 15px 16px;
        font-size: 15px;
    }

    .atc-faq-list .accordion-body {
        padding: 2px 18px 21px;
        font-size: 14px;
    }
}