/* gep-system-solutions.php */

  /* ============================================================
     SYSTEM SOLUTIONS PAGE
     ============================================================ */

  /* ── Breadcrumb ── */
  .breadcrumb {
    display: flex;
    align-items: center;
    gap: .45rem;
    font-size: .75rem;
    color: rgba(255,255,255,.52);
    margin-bottom: 1.25rem;
  }
  .breadcrumb a { color: rgba(255,255,255,.52); transition: color .2s; }
  .breadcrumb a:hover { color: rgba(255,255,255,.88); }
  .breadcrumb-sep { opacity: .42; }

  /* ── Hero ── */
  .om-hero {
    position: relative;
    overflow: hidden;
    padding-top: 68px;
    background: var(--navy-700);
    min-height: 460px;
    display: flex;
    align-items: flex-end;
  }
  .om-hero__bg { position: absolute; inset: 0; overflow: hidden; }
  .om-hero__bg video { width: 100%; height: 100%; object-fit: cover; object-position: center; }
  .om-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(20,24,40,.95) 0%, rgba(53,57,104,.84) 52%, rgba(20,24,40,.76) 100%);
  }
  .om-hero__accent {
    position: absolute;
    inset: auto 0 0 auto;
    width: 42%;
    height: 100%;
    background: linear-gradient(135deg, transparent 56%, rgba(243,115,33,.08) 100%);
    pointer-events: none;
  }
  .om-hero__content { position: relative; z-index: 2; width: 100%; padding: var(--sp-2xl) 0 var(--sp-xl); }
  .om-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--orange-500);
    margin-bottom: 1.15rem;
  }
  .om-hero__eyebrow::before { content: ''; display: block; width: 28px; height: 2px; background: var(--orange-500); }
  .om-hero__heading { color: var(--white); max-width: 820px; margin: 0; }
  .om-hero__heading em { font-style: normal; color: var(--orange-500); }
  .om-hero__sub { margin-top: 1.15rem; max-width: 620px; font-size: 1.05rem; line-height: 1.7; font-weight: 300; color: rgba(255,255,255,.72); }

  /* ── Subnav ── */
  .om-subnav { position: sticky; top: 68px; z-index: 900; background: var(--white); border-bottom: 1px solid var(--sand); box-shadow: 0 2px 8px rgba(0,0,0,.05); }
  .om-subnav__inner { display: flex; max-width: var(--container); margin: 0 auto; padding: 0 2.5rem; overflow-x: auto; scrollbar-width: none; }
  .om-subnav__inner::-webkit-scrollbar { display: none; }
  .om-subnav__link {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: .95rem 1.2rem;
    font-size: .82rem;
    font-weight: 700;
    color: var(--grey-500);
    letter-spacing: .02em;
    border: 0;
    border-bottom: 2.5px solid transparent;
    background: none;
    cursor: pointer;
    white-space: nowrap;
    transition: color .2s, border-color .2s;
  }
  .om-subnav__link:hover { color: var(--grey-800); }
  .om-subnav__link.active { color: var(--orange-500); border-bottom-color: var(--orange-500); }

  .om-tab-panel { display: none; }
  .om-tab-panel.active { display: block; }

  /* ── Common ── */
  .overline {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--orange-500);
  }
  .overline::before { content: ''; display: block; width: 24px; height: 2px; background: var(--orange-500); flex-shrink: 0; }
  .divider { width: 48px; height: 3px; background: var(--orange-500); margin: .9rem 0 1.45rem; border-radius: 2px; }
  .section-shell { padding: var(--sp-2xl) 0; }
  .section-shell--white { background: var(--white); }
  .section-shell--light { background: var(--grey-50); }
  .section-shell--navy { background: var(--navy-700); color: var(--white); }

  /* ── Section Intro ── */
  .section-intro {
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(320px, .98fr);
    gap: var(--sp-xl);
    align-items: stretch;
  }
  .section-intro__body h2 { max-width: 24ch; margin-bottom: .5rem; }
  .section-intro__body p { margin: 0 0 1rem; font-size: 1.02rem; line-height: 1.72; font-weight: 300; color: var(--grey-600); }
  .section-shell--navy .section-intro__body p { color: rgba(255,255,255,.78); }
  .section-intro__visual {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    min-height: 280px;
    max-height: 420px;
    background: var(--grey-100);
    box-shadow: var(--shadow-md);
    align-self: stretch;
  }
  .section-intro__visual img { width: 100%; height: 100%; object-fit: cover; display: block; }
  .section-intro__visual::after { content: ''; position: absolute; left: 0; bottom: 0; width: 4px; height: 62%; background: var(--orange-500); }

  /* ── Info Card Grids ── */
  .offer-grid,
  .capability-grid,
  .security-grid,
  .pillar-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5px;
    background: var(--sand);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-top: var(--sp-xl);
  }
  .capability-grid { grid-template-columns: repeat(3, 1fr); }
  .security-grid,
  .pillar-grid    { grid-template-columns: repeat(3, 1fr); }

  /* ── Info Card ── */
  .info-card {
    background: var(--white);
    padding: 1.55rem 1.25rem 1.45rem;
    position: relative;
    transition: background .2s ease;
  }
  .info-card:hover { background: var(--grey-50); }
  .info-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--orange-500);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s cubic-bezier(.22,1,.36,1);
  }
  .info-card:hover::before { transform: scaleX(1); }
  .info-card__icon {
    width: 38px; height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--orange-500);
    color: var(--white);
    font-weight: 700;
    font-size: .78rem;
    margin-bottom: .9rem;
  }
  .info-card__title { font-size: .95rem; font-weight: 700; color: var(--grey-900); margin-bottom: .45rem; line-height: 1.3; }
  .info-card__text { font-size: .86rem; line-height: 1.68; font-weight: 300; color: var(--grey-600); margin: 0; }

  /* navy 배경 info-card 오버라이드 */
  .section-shell--navy .security-grid,
  .section-shell--navy .offer-grid,
  .section-shell--navy .pillar-grid { background: rgba(255,255,255,.06); }
  .section-shell--navy .info-card { background: rgba(255,255,255,.04); }
  .section-shell--navy .info-card:hover { background: rgba(255,255,255,.09); }
  .section-shell--navy .info-card__title { color: var(--white); }
  .section-shell--navy .info-card__text { color: rgba(255,255,255,.65); }

  /* ── Overview Block ── */
  .overview-block {
    margin-top: var(--sp-xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1.5px solid var(--sand);
    border-radius: var(--radius-md);
    overflow: hidden;
  }
  .overview-box { background: var(--grey-50); padding: 1.8rem 1.6rem; border-right: 1.5px solid var(--sand); }
  .overview-box:last-child { border-right: none; }
  .overview-box h3 { font-size: 1rem; font-weight: 700; color: var(--grey-900); margin-bottom: .7rem; display: flex; align-items: center; gap: .6rem; }
  .overview-box h3::before { content: ''; width: 20px; height: 3px; background: var(--orange-500); flex-shrink: 0; border-radius: 2px; }
  .overview-box p { margin: 0; color: var(--grey-600); line-height: 1.72; font-weight: 300; font-size: .92rem; }

  /* ── Service Overview Diagram ── */
  .so-diagram { margin-top: var(--sp-xl); }
  .so-title { font-size: 1.15rem; font-weight: 700; color: var(--orange-500); margin: 0 0 1rem; }
  .so-box { border: 1px solid #c9c9c9; padding: 2.5rem 2rem; background: var(--white); border-radius: 4px; position: relative; }
  .so-it-solution { position: relative; margin-bottom: 2rem; }
  .so-bracket-top {
    position: relative;
    border: 3px dotted #a0a0a0;
    border-bottom: none;
    height: 25px;
    width: 76%;
    margin: 0 auto 1.5rem;
    border-radius: 10px 10px 0 0;
  }
  .so-bracket-top span {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    padding: 0 15px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #444;
  }
  .so-systems { display: flex; justify-content: center; align-items: stretch; gap: 0; }
  .so-system-card {
    position: relative;
    overflow: hidden;
    background: var(--white);
    padding: 2.25rem 1.55rem 2.15rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 286px;
    min-height: 286px;
    text-align: center;
    border: 1px solid rgba(15, 23, 42, .08);
    border-radius: var(--radius-md);
    box-shadow: 0 14px 34px rgba(15, 23, 42, .08);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;
  }
  .so-system-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--orange-500);
  }
  .so-system-card:hover {
    transform: translateY(-3px);
    border-color: rgba(243, 115, 33, .28);
    background: #fffdfb;
    box-shadow: 0 18px 42px rgba(15, 23, 42, .12);
  }
  .so-sys-icon {
    width: 118px; height: 118px;
    background: var(--orange-500);
    color: var(--white);
    font-size: 4.1rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.45rem;
    box-shadow: 0 14px 30px rgba(243, 115, 33, .26);
  }
  .so-sys-desc { font-size: .92rem; color: var(--grey-800); line-height: 1.5; margin-bottom: 1rem; flex: 1; font-weight: 500; }
  .so-sys-name { font-size: 1.72rem; font-weight: 800; color: var(--orange-500); line-height: 1; }
  .so-sys-line { width: 48px; position: relative; }
  .so-sys-line::before {
    content: '';
    position: absolute;
    top: 50%; left: 0; right: 0;
    border-top: 3px dotted #a0a0a0;
  }
  .so-mcm-bar {
    background: #d9d9d9;
    color: #444;
    text-align: center;
    padding: .85rem 2rem;
    font-size: 1.2rem;
    font-weight: 700;
    width: 76%;
    margin: 0 auto 2.5rem;
    border-radius: 4px;
  }
  .so-power-plant { position: relative; padding-bottom: 20px; margin-top: 1rem; }
  .so-devices { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; position: relative; z-index: 2; }
  .so-device { display: flex; flex-direction: column; align-items: center; text-align: center; background: var(--white); padding: 0 5px; }
  .so-device-icon {
    width: 90px; height: 90px;
    border: 2px solid #b3b3b3;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: .8rem;
    color: var(--orange-500);
    background: var(--white);
  }
  .so-device-icon svg { width: 42px; height: 42px; stroke: currentColor; stroke-width: 1.5; fill: none; }
  .so-device-name { font-size: .9rem; font-weight: 700; color: #555; max-width: 90px; line-height: 1.2; }
  .so-bracket-bottom {
    position: absolute;
    top: 45px; left: 45px; right: 45px; bottom: 0;
    border: 3px dotted #a0a0a0;
    border-top: none;
    z-index: 1;
    border-radius: 0 0 10px 10px;
  }
  .so-plant-label {
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    padding: 0 15px;
    font-size: 1.1rem;
    font-weight: 700;
    color: #555;
    z-index: 2;
  }

  /* ── View Details Toggle ── */
  .panel-detail { overflow: hidden; max-height: 0; transition: max-height .65s cubic-bezier(.22,1,.36,1); }
  .panel-detail.open { max-height: 9999px; }
  .view-details-wrap { padding: var(--sp-xl) 0 0; display: flex; justify-content: center; border-top: 1px solid var(--sand); margin-top: var(--sp-xl); }
  .btn-view-details {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    padding: .85rem 2rem;
    border: 1.5px solid var(--sand);
    background: var(--white);
    color: var(--grey-700);
    font-family: inherit;
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: 2px;
    transition: border-color .22s ease, color .22s ease, background .22s ease;
  }
  .btn-view-details:hover { border-color: var(--orange-500); color: var(--orange-500); background: rgba(243,115,33,.04); }
  .btn-view-details svg { width: 15px; height: 15px; transition: transform .3s cubic-bezier(.22,1,.36,1); }
  .btn-view-details.open svg { transform: rotate(180deg); }
  .section-shell--navy .btn-view-details { border-color: rgba(255,255,255,.18); background: transparent; color: rgba(255,255,255,.72); }
  .section-shell--navy .btn-view-details:hover { border-color: var(--orange-500); color: var(--orange-500); background: rgba(243,115,33,.06); }

  /* ── HEIS Ecosystem Diagram ── */
  .heis-ecosystem { margin-top: var(--sp-xl); padding: var(--sp-xl) 0; display: flex; flex-direction: column; }
  .he-diagram-img { margin-bottom: 0; }
  .he-text { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; background: var(--grey-50); padding: 2.5rem; border-radius: var(--radius-md); margin-top: -1.5rem; }
  .he-text-box h4 { font-size: 1.1rem; font-weight: 700; color: var(--orange-500); margin: 0 0 1rem; }
  .he-text-box p { margin: 0 0 .8rem; font-size: .95rem; line-height: 1.6; color: var(--grey-800); }
  .he-text-box p:last-child { margin: 0; }

  /* ── HEIS Benefits ── */
  .heis-benefits { margin-top: var(--sp-xl); }
  .heis-benefits__label {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .9rem;
    font-weight: 700;
    color: var(--orange-500);
    margin-bottom: 4rem;
  }
  .heis-benefits__label::before { content: ''; display: block; width: 44px; height: 3px; background: var(--orange-500); border-radius: 2px; }
  .heis-benefits__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; }
  .heis-benefit-card {
    position: relative;
    background: #f3f3f3;
    border: 1.5px solid rgba(243,115,33,.7);
    border-radius: 18px;
    padding: 4rem 1.5rem 1.9rem;
    min-height: 360px;
  }
  .heis-benefit-card__icon-wrap {
    position: absolute;
    top: -44px;
    left: 50%;
    transform: translateX(-50%);
    width: 88px; height: 88px;
    border-radius: 50%;
    border: 1.5px solid rgba(243,115,33,.7);
    background: #f3f3f3;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .heis-benefit-card__icon { width: 42px; height: 42px; color: var(--orange-500); }
  .heis-benefit-card__icon svg { width: 100%; height: 100%; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
  .heis-benefit-card__title { text-align: center; font-size: 1.45rem; line-height: 1.25; font-weight: 700; color: var(--orange-500); margin: 0 0 1.2rem; }
  .heis-benefit-card__divider { width: 100%; height: 1px; background: rgba(243,115,33,.6); margin-bottom: 1.35rem; }
  .heis-benefit-card__list { margin: 0; padding: 0; list-style: none; }
  .heis-benefit-card__list li { position: relative; padding-left: .95rem; margin-bottom: 1.15rem; font-size: 1rem; line-height: 1.62; color: #333; font-weight: 400; }
  .heis-benefit-card__list li:last-child { margin-bottom: 0; }
  .heis-benefit-card__list li::before { content: '•'; position: absolute; left: 0; top: 0; color: #333; font-weight: 700; }

  /* panel-detail 내부 Benefits: 아이콘 오버행 공간 확보 */
  .panel-detail .heis-benefits { margin-top: calc(var(--sp-xl) + 0px); }

  /* ── HEIS Features ── */
  .heis-features { margin-top: var(--sp-xl); }
  .heis-features__label {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .9rem;
    font-weight: 700;
    color: var(--orange-500);
    margin-bottom: 1.5rem;
  }
  .heis-features__label::before { content: ''; display: block; width: 44px; height: 3px; background: var(--orange-500); border-radius: 2px; }
  .heis-features__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .heis-feature-card {
    border: 1.5px solid rgba(243,115,33,.6);
    border-radius: 14px;
    padding: 2rem 1.75rem;
    background: var(--white);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }
  .heis-feature-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--orange-500);
    margin: 0;
    padding-bottom: .85rem;
    border-bottom: 1.5px solid rgba(243,115,33,.35);
    line-height: 1.3;
  }
  .heis-feature-card__list { margin: 0; padding: 0; list-style: none; flex: 1; }
  .heis-feature-card__list li {
    position: relative;
    padding-left: 1rem;
    margin-bottom: .85rem;
    font-size: .95rem;
    line-height: 1.65;
    color: var(--grey-700);
    font-weight: 400;
  }
  .heis-feature-card__list li:last-child { margin-bottom: 0; }
  .heis-feature-card__list li::before {
    content: '·';
    position: absolute;
    left: 0; top: 0;
    font-size: 1.3rem;
    line-height: 1.4;
    color: var(--orange-500);
    font-weight: 700;
  }
  .heis-feature-card__img-wrap { border-radius: 8px; overflow: hidden; background: #111; }
  .heis-feature-card__img-wrap img { width: 100%; height: auto; display: block; }
  .heis-feature-card__img-stack { display: flex; flex-direction: column; gap: .65rem; }
  .heis-feature-card__img-stack-main { border-radius: 7px; overflow: hidden; background: #111; }
  .heis-feature-card__img-stack-main img { width: 100%; height: auto; display: block; }
  .heis-feature-card__img-stack-row { display: grid; grid-template-columns: 1fr 1fr; gap: .65rem; }
  .heis-feature-card__img-stack-row > div { border-radius: 7px; overflow: hidden; background: #111; }
  .heis-feature-card__img-stack-row > div img { width: 100%; height: auto; display: block; }
  @media (max-width: 768px) { .heis-features__grid { grid-template-columns: 1fr; } }

  /* ── HEIS Architecture Block ── */
  .heis-architecture { margin-top: var(--sp-xl); }
  .heis-architecture__label {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .9rem;
    font-weight: 700;
    color: var(--orange-500);
    margin-bottom: 1.5rem;
  }
  .heis-architecture__label::before { content: ''; display: block; width: 44px; height: 3px; background: var(--orange-500); border-radius: 2px; }
  .heis-architecture__card {
    border: 1.5px solid rgba(243,115,33,.6);
    border-radius: 14px;
    padding: 2rem 1.75rem;
    background: var(--white);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }
  .heis-architecture__card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--orange-500);
    margin: 0;
    padding-bottom: .85rem;
    border-bottom: 1.5px solid rgba(243,115,33,.35);
    line-height: 1.3;
  }
  .heis-architecture__card-desc {
    font-size: .92rem;
    line-height: 1.7;
    color: var(--grey-600);
    font-weight: 300;
    margin: 0;
  }
  .heis-architecture__img-wrap {
    border-radius: 8px;
    overflow: hidden;
    background: var(--grey-50);
    border: 1px solid var(--sand);
  }
  .heis-architecture__img-wrap img { width: 100%; height: auto; display: block; }

  /* ── HEIS Suite Subsystem Diagram ── */
  .heis-suite { margin-top: var(--sp-xl); }
  .heis-suite__label {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .9rem;
    font-weight: 700;
    color: var(--orange-500);
    margin-bottom: 1.5rem;
  }
  .heis-suite__label::before { content: ''; display: block; width: 44px; height: 3px; background: var(--orange-500); border-radius: 2px; }

  /* 헤더 영역 */
  .heis-suite__header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 1.75rem 2rem;
    background: var(--white);
    border: 1.5px solid rgba(243,115,33,.6);
    border-radius: 14px 14px 0 0;
    border-bottom: none;
  }
  .heis-suite__header-title { font-size: 1.35rem; font-weight: 700; color: var(--orange-500); line-height: 1.3; margin: 0; }
  .heis-suite__header-title strong { display: block; }
  .heis-suite__header-desc { font-size: .88rem; line-height: 1.7; color: var(--grey-600); font-weight: 300; margin: 0; align-self: center; }

  /* 허브 원 */
  .heis-suite__hub-row {
    display: flex;
    justify-content: center;
    padding: 2rem 0 0;
    background: var(--grey-50);
    border-left: 1.5px solid rgba(243,115,33,.6);
    border-right: 1.5px solid rgba(243,115,33,.6);
    position: relative;
  }
  /* 허브 아래 수직선 */
  .heis-suite__hub-row::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 2rem;
    background: var(--orange-500);
  }
  .heis-suite__hub {
    width: 110px; height: 110px;
    border-radius: 50%;
    background: var(--orange-500);
    color: var(--white);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: .5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(243,115,33,.35);
  }
  .heis-suite__hub-name { font-size: 1.1rem; font-weight: 900; letter-spacing: .02em; line-height: 1; }
  .heis-suite__hub-sub { font-size: .62rem; font-weight: 400; line-height: 1.4; margin-top: .3rem; opacity: .9; }

  /* 수평 연결선 + 모듈을 공통 래퍼 그리드로 묶어 열 정렬 보장 */
  .heis-suite__body {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0 1rem;
    padding: 0 2rem 2rem;                     /* 하단 패딩으로 모듈 아래 여백 */
    background: var(--grey-50);
    border-left: 1.5px solid rgba(243,115,33,.6);
    border-right: 1.5px solid rgba(243,115,33,.6);
  }

  /* connector-cell: body 그리드의 1행 */
  .heis-suite__connector-cell {
    height: 2rem;
    position: relative;
  }
  .heis-suite__connector-cell::after {           /* 수직 드롭선 */
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 2px; height: 100%;
    background: var(--orange-500);
  }
  /* 수평선: gap 공백을 포함해 셀 바깥까지 뻗어야 이어짐 */
  /* 1번 셀: 중앙 ~ 오른쪽(gap 절반 포함) */
  .heis-suite__connector-cell--first::before {
    content: '';
    position: absolute;
    top: 0; left: 50%; right: -0.5rem;
    height: 2px;
    background: var(--orange-500);
  }
  /* 2·3번 셀: 좌우 모두 gap 절반씩 확장 */
  .heis-suite__connector-cell--mid::before {
    content: '';
    position: absolute;
    top: 0; left: -0.5rem; right: -0.5rem;
    height: 2px;
    background: var(--orange-500);
  }
  /* 4번 셀: 왼쪽(gap 절반 포함) ~ 중앙 */
  .heis-suite__connector-cell--last::before {
    content: '';
    position: absolute;
    top: 0; left: -0.5rem; right: 50%;
    height: 2px;
    background: var(--orange-500);
  }

  /* module: body 그리드의 2행 */
  .heis-suite__module {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }

  /* 모듈 원형 라벨 */
  .heis-suite__module-hub {
    width: 80px; height: 80px;
    border-radius: 50%;
    border: 2px solid var(--orange-500);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: .4rem;
    flex-shrink: 0;
  }
  .heis-suite__module-hub-name {
    font-size: .7rem;
    font-weight: 700;
    color: var(--orange-500);
    line-height: 1.3;
    text-align: center;
  }
  .heis-suite__module-hub-name em { font-style: normal; font-weight: 900; }

  /* 모듈 텍스트 카드 */
  .heis-suite__module-card {
    width: 100%;
    border: 1.5px solid var(--orange-500);
    border-radius: 12px;
    padding: 1.1rem 1rem 1rem;
    background: var(--white);
    flex: 1;
  }
  .heis-suite__module-list { margin: 0; padding: 0; list-style: none; }
  .heis-suite__module-list li {
    position: relative;
    padding-left: .85rem;
    margin-bottom: .65rem;
    font-size: .78rem;
    line-height: 1.55;
    color: var(--grey-700);
    font-weight: 400;
  }
  .heis-suite__module-list li:last-child { margin-bottom: 0; }
  .heis-suite__module-list li::before {
    content: '•';
    position: absolute;
    left: 0; top: 0;
    color: var(--orange-500);
    font-weight: 700;
  }
  .heis-suite__module-list li strong { color: var(--grey-900); font-weight: 600; }

  /* 하단 서비스 라벨 — body 래퍼와 동일한 그리드 */
  .heis-suite__footer {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0 1rem;
    padding: 0rem 2rem 1.5rem;
    background: var(--grey-50);
    border: 1.5px solid rgba(243,115,33,.6);
    border-top: none;
    border-radius: 0 0 14px 14px;
  }
  .heis-suite__footer-label {
    text-align: center;
    font-size: .72rem;
    font-weight: 700;
    color: var(--orange-500);
    padding: .5rem .25rem;
    border-top: 2px solid var(--orange-500);
    line-height: 1.4;
  }
  .heis-suite__footer-label--empty { border-top-color: transparent; }

  /* 반응형 */
  @media (max-width: 1024px) {
    .heis-suite__header { grid-template-columns: 1fr; gap: .75rem; }
    .heis-suite__body { grid-template-columns: repeat(2, 1fr); padding: 0 1.25rem 1.5rem; }
    .heis-suite__footer { grid-template-columns: repeat(2, 1fr); padding: 1rem 1.25rem 1.5rem; }
    .heis-suite__connector-cell--first::before  { left: 50%;     right: -0.5rem; }
    .heis-suite__connector-cell--mid::before    { left: -0.5rem; right: 50%; }
    .heis-suite__connector-cell--mid::after     { display: none; }
    .heis-suite__connector-cell--last::before   { display: none; }
    .heis-suite__connector-cell--last::after    { display: none; }
  }
  @media (max-width: 640px) {
    .heis-suite__body { grid-template-columns: 1fr; padding: 0 1rem 1.5rem; }
    .heis-suite__footer { grid-template-columns: 1fr; padding: 1rem 1rem 1.5rem; }
    .heis-suite__connector-cell { display: none; }
    .heis-suite__hub-row::after { display: none; }
    .heis-suite__module { flex-direction: row; align-items: flex-start; gap: .85rem; }
    .heis-suite__module-hub { flex-shrink: 0; }
  }

  .process-band { margin-top: var(--sp-xl); background: #12182b; border-radius: var(--radius-md); overflow: hidden; color: var(--white); position: relative; }
  .process-band::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 55% 80% at 100% 0%, rgba(243,115,33,.10) 0%, transparent 60%); pointer-events: none; }
  .process-band__head { position: relative; z-index: 1; padding: 1.6rem 1.75rem 1.2rem; border-bottom: 1px solid rgba(255,255,255,.08); }
  .process-band__head p { margin: .6rem 0 0; max-width: 860px; color: rgba(255,255,255,.62); line-height: 1.7; font-weight: 300; font-size: .92rem; }
  .process-flow { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255,255,255,.07); }
  .process-step { background: rgba(255,255,255,.03); padding: 1.5rem 1.15rem 1.6rem; transition: background .25s ease; position: relative; }
  .process-step:hover { background: rgba(255,255,255,.07); }
  .process-step::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--orange-500); transform: scaleX(0); transform-origin: left; transition: transform .35s cubic-bezier(.22,1,.36,1); }
  .process-step:hover::before { transform: scaleX(1); }
  .process-step__num { font-size: .65rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--orange-500); margin-bottom: .65rem; }
  .process-step__title { font-size: .94rem; font-weight: 700; color: var(--white); margin-bottom: .45rem; line-height: 1.3; }
  .process-step__text { font-size: .82rem; line-height: 1.65; color: rgba(255,255,255,.58); font-weight: 300; margin: 0; }

  /* ── CTA Block ── */
  .cta-block {
    margin-top: var(--sp-xl);
    padding: 2.2rem 2rem;
    background: var(--grey-50);
    border: 1.5px solid var(--sand);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }
  .cta-block__text h3 { font-size: 1.1rem; font-weight: 700; color: var(--grey-900); margin: 0 0 .4rem; }
  .cta-block__text p { margin: 0; font-size: .92rem; color: var(--grey-600); font-weight: 300; line-height: 1.65; }
  .btn-cta {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    padding: .9rem 1.8rem;
    background: var(--orange-500);
    color: var(--white);
    font-family: inherit;
    font-size: .84rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    text-decoration: none;
    transition: background .2s, transform .2s;
  }
  .btn-cta:hover { background: #d96a1a; transform: translateY(-1px); }
  .btn-cta svg { width: 15px; height: 15px; }

  /* ── HEIS Accordion ── */
  .heis-accordion { border: 1.5px solid var(--sand); border-radius: var(--radius-md); overflow: hidden; }
  .heis-ac-item { border-bottom: 1.5px solid var(--sand); }
  .heis-ac-item:last-child { border-bottom: none; }
  .heis-ac-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.15rem 1.4rem;
    background: var(--white);
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background .18s ease;
  }
  .heis-ac-trigger:hover,
  .heis-ac-trigger[aria-expanded="true"] { background: var(--grey-50); }
  .heis-ac-trigger[aria-expanded="true"] .heis-ac-icon { transform: rotate(180deg); }
  .heis-ac-label { display: flex; align-items: center; gap: .85rem; font-size: .9rem; font-weight: 700; color: var(--grey-800); line-height: 1.3; }
  .heis-ac-num {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px; height: 28px;
    padding: 0 .45rem;
    background: var(--orange-500);
    color: var(--white);
    font-size: .7rem;
    font-weight: 700;
    border-radius: 2px;
  }
  .heis-ac-icon { flex-shrink: 0; width: 16px; height: 16px; color: var(--grey-400); transition: transform .32s cubic-bezier(.22,1,.36,1); }
  .heis-ac-body { overflow: hidden; max-height: 0; transition: max-height .5s cubic-bezier(.22,1,.36,1); }
  .heis-ac-body.open { max-height: 9999px; }
  .heis-ac-body > .overview-block,
  .heis-ac-body > .security-grid,
  .heis-ac-body > .offer-grid,
  .heis-ac-body > .capability-grid { margin: 0; border-radius: 0; border-top: 1.5px solid var(--sand); }
  .heis-ac-desc { padding: 1.1rem 1.4rem .9rem; margin: 0; font-size: .92rem; line-height: 1.7; font-weight: 300; color: var(--grey-600); border-top: 1.5px solid var(--sand); background: var(--grey-50); }

  /* ── Responsive ── */
  @media (max-width: 1024px) {
    :root { --sp-xl: 3rem; --sp-2xl: 4.5rem; }
    .section-intro { grid-template-columns: 1fr; }
    .section-intro__visual { order: -1; min-height: 320px; }
    .offer-grid, .security-grid, .pillar-grid, .process-flow { grid-template-columns: repeat(2, 1fr); }
    .capability-grid { grid-template-columns: repeat(2, 1fr); }
    .overview-block { grid-template-columns: 1fr; }
    .overview-box { border-right: none; border-bottom: 1.5px solid var(--sand); }
    .overview-box:last-child { border-bottom: none; }
    .cta-block { flex-direction: column; align-items: flex-start; }
    .heis-benefits__grid { grid-template-columns: 1fr; gap: 4rem; }
    .heis-benefit-card { min-height: auto; }
    .he-text { grid-template-columns: 1fr; }
    .so-bracket-top { width: 90%; }
    .so-mcm-bar { width: 90%; }
  }
  @media (max-width: 768px) {
    :root { --sp-xl: 2.5rem; --sp-2xl: 3.5rem; }
    .om-subnav__inner { padding: 0 1.25rem; }
    .offer-grid, .capability-grid, .security-grid, .pillar-grid, .process-flow { grid-template-columns: 1fr; }
    .heis-benefit-card__title { font-size: 1.3rem; }
    .heis-benefit-card__list li { font-size: .95rem; }
    .so-systems { flex-direction: column; align-items: center; gap: 1rem; }
    .so-system-card { width: 100%; max-width: 340px; min-height: auto; padding: 2rem 1.35rem; }
    .so-sys-icon { width: 96px; height: 96px; font-size: 3.25rem; }
    .so-sys-name { font-size: 1.55rem; }
    .so-sys-line { width: 2px; height: 30px; }
    .so-sys-line::before { border-top: none; border-left: 3px dotted #a0a0a0; top: 0; bottom: 0; left: 50%; right: auto; transform: translateX(-50%); }
    .so-bracket-top, .so-bracket-bottom { display: none; }
    .so-devices { flex-wrap: wrap; justify-content: center; gap: 2rem; }
    .so-mcm-bar { width: 100%; }
    .so-plant-label { position: static; transform: none; margin-top: 1rem; text-align: center; }
  }
  @media (max-width: 480px) {
    .om-subnav__link { padding: .9rem 1rem; font-size: .8rem; }
    .section-intro__visual { min-height: 260px; }
    .heis-benefit-card { padding: 3.5rem 1.15rem 1.5rem; border-radius: 16px; }
    .heis-benefit-card__icon-wrap { width: 80px; height: 80px; top: -40px; }
    .heis-benefit-card__icon { width: 38px; height: 38px; }
  }