:root {
    --page-accent: #0a6f8a;
    --overview-ink: #092a36;
    --overview-blue: #0a6f8a;
    --overview-teal: #0e766f;
    --overview-gold: #d6a842;
    --overview-mist: #eef7f8;
    --overview-line: rgba(219, 230, 229, 0.96);
}

.overview-hero {
    --subpage-position: center;
    align-items: end;
}

.overview-hero .container {
    transform: translateY(-80px);
}

.overview-hero .subpage-hero-overlay-start {
    stop-color: rgba(7, 30, 41, 0.94);
}

.overview-hero .subpage-hero-overlay-mid {
    stop-color: rgba(7, 30, 41, 0.66);
}

.overview-hero .subpage-hero-overlay-end {
    stop-color: rgba(10, 111, 138, 0.24);
}

.overview-hero .container {
    padding-block: clamp(58px, 10vw, 106px);
}

.overview-hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.38fr);
    gap: clamp(28px, 5vw, 66px);
    align-items: end;
}

.overview-hero-copy h1 {
    max-width: 900px;
    font-size: clamp(2.9rem, 6.8vw, 5rem);
    line-height: 0.98;
}

.overview-hero-copy p:not(.section-kicker) {
    max-width: 740px;
}

.overview-hero-panel {
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-card);
    padding: clamp(22px, 3vw, 30px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.24);
    backdrop-filter: blur(16px);
}

.overview-hero-panel span,
.overview-card-index,
.overview-product-series,
.overview-reactor-code,
.overview-boiler-list span {
    font-size: 0.76rem;
    font-weight: 850;
    letter-spacing: 0;
    text-transform: uppercase;
}

.overview-hero-panel span {
    display: block;
    color: #bfe9ea;
}

.overview-hero-panel strong {
    display: block;
    margin-top: 18px;
    color: #ffffff;
    font-size: 1.55rem;
    line-height: 1.08;
}

.overview-hero-panel p {
    margin-top: 14px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 1rem;
}

.overview-main {
    color: #263946;
}

.overview-intro {
    padding: clamp(40px, 5vw, 60px) 0;
    background:
        linear-gradient(180deg, #ffffff 0%, rgba(238, 247, 248, 0.72) 100%);
}

.overview-intro-grid,
.overview-boiler-grid,
.overview-plc-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1fr);
    gap: clamp(30px, 6vw, 82px);
    align-items: start;
}

.overview-intro-copy h2,
.overview-sticky-title h2,
.overview-plc-copy h2 {
    margin: 0;
    color: var(--overview-ink);
    font-size: clamp(2.2rem, 4.2vw, 3.45rem);
    line-height: 1.04;
}

.overview-intro-copy p:not(.section-kicker),
.overview-sticky-title p,
.overview-plc-copy p {
    margin: 18px 0 0;
    color: var(--color-muted);
}

.overview-scope-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.overview-scope-grid a {
    display: flex;
    min-height: 92px;
    align-items: flex-end;
    border: 1px solid var(--overview-line);
    border-radius: var(--radius-card);
    padding: 18px;
    color: var(--overview-ink);
    background: #ffffff;
    box-shadow: 0 12px 34px rgba(10, 48, 56, 0.07);
    font-weight: 820;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.overview-scope-grid a:hover,
.overview-scope-grid a:focus {
    border-color: rgba(10, 111, 138, 0.36);
    transform: translateY(-2px);
}

.overview-section-head {
    max-width: 880px;
}

.overview-section-head-wide {
    max-width: 980px;
}

.overview-products {
    padding: clamp(40px, 5vw, 60px) 0;
}

.overview-product-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: clamp(20px, 4vw, 36px);
}

.overview-product-card,
.overview-text-block,
.overview-list-panel,
.overview-package-card,
.overview-boiler-list article {
    border: 1px solid var(--overview-line);
    border-radius: var(--radius-card);
    padding: clamp(22px, 3vw, 30px);
    background: #ffffff;
    box-shadow: 0 16px 38px rgba(10, 48, 56, 0.08);
}

.overview-product-card-featured {
    color: #ffffff;
    background:
        linear-gradient(145deg, rgba(9, 42, 54, 0.96), rgba(10, 111, 138, 0.88)),
        url("../images/survey-pltu-cirebon.jpg") center / cover;
}

.overview-card-index {
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-top: 8px;
    color: var(--overview-ink);
    background: rgba(214, 168, 66, 0.22);
}

.overview-product-card-featured .overview-card-index,
.overview-reactor-code {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.16);
}

.overview-product-series {
    margin: 34px 0 9px;
    color: var(--overview-blue);
}

.overview-product-card-featured .overview-product-series {
    color: #bfe9ea;
}

.overview-product-card h3,
.overview-text-block h3,
.overview-list-panel h3,
.overview-package-card h3,
.overview-dark-card h3,
.overview-reactor-feature h3,
.overview-reactor-super h3,
.overview-plc-copy h3 {
    margin: 0;
    color: var(--overview-ink);
    font-size: clamp(1.32rem, 2.4vw, 2rem);
    line-height: 1.1;
}

.overview-product-card h3 {
    min-height: 2.2em;
}

.overview-product-card-featured h3,
.overview-dark-card h3,
.overview-reactor-feature h3,
.overview-reactor-super h3 {
    color: #ffffff;
}

.overview-product-card p:last-child,
.overview-text-block p,
.overview-list-panel p,
.overview-dark-card p,
.overview-reactor-copy p,
.overview-reactor-super p,
.overview-boiler-list p,
.overview-package-card p {
    margin: 16px 0 0;
    color: var(--color-muted);
}

.overview-product-card-featured p:last-child,
.overview-dark-card p,
.overview-reactor-copy p,
.overview-reactor-super p {
    color: rgba(255, 255, 255, 0.78);
}

.overview-split-block,
.overview-two-column,
.overview-reactor-grid,
.overview-membrane-grid {
    display: grid;
    gap: 18px;
    margin-top: clamp(20px, 4vw, 36px);
}

.overview-split-block {
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
}

.overview-two-column,
.overview-reactor-grid,
.overview-membrane-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.overview-text-block-strong {
    border-color: rgba(10, 111, 138, 0.22);
    background:
        linear-gradient(180deg, #ffffff 0%, rgba(238, 247, 248, 0.88) 100%);
}

.overview-text-block-accent {
    border-color: rgba(214, 168, 66, 0.36);
    background:
        linear-gradient(180deg, #ffffff 0%, rgba(255, 249, 234, 0.88) 100%);
}

.overview-note {
    margin-top: 22px;
    border-left: 4px solid var(--overview-gold);
    padding: 18px;
    background: rgba(255, 255, 255, 0.72);
}

.overview-note h3,
.overview-note h4 {
    margin: 0;
    color: var(--overview-ink);
    font-size: 1rem;
}

.overview-note p {
    margin-top: 8px;
}

.overview-check-list,
.overview-boiler-list ul,
.overview-package-card ul {
    display: grid;
    gap: 11px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.overview-check-list li,
.overview-boiler-list li,
.overview-package-card li {
    position: relative;
    padding-left: 28px;
    color: #263946;
}

.overview-check-list li::before,
.overview-boiler-list li::before,
.overview-package-card li::before {
    position: absolute;
    top: 0.62em;
    left: 0;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--overview-blue);
    content: "";
}

.overview-bacteria {
    padding: clamp(40px, 5vw, 60px) 0;
}

.overview-reactor {
    background:
        linear-gradient(135deg, rgba(9, 42, 54, 0.98), rgba(11, 29, 38, 0.98)),
        url("../images/header-menu-3.png") center / cover;
}

.overview-reactor-feature,
.overview-reactor-super {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1fr);
    gap: clamp(24px, 5vw, 62px);
    margin-top: clamp(30px, 5vw, 50px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-card);
    padding: clamp(24px, 4vw, 40px);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 28px 74px rgba(0, 0, 0, 0.22);
}

.overview-reactor-code {
    display: inline-flex;
    min-width: 58px;
    min-height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-control);
    padding: 10px 13px;
    margin-top: 8px;
}

.overview-reactor-feature h3,
.overview-reactor-super h3 {
    margin-top: 20px;
}

.overview-dark-card {
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-card);
    padding: clamp(22px, 3vw, 30px);
    background: rgba(255, 255, 255, 0.07);
}

.overview-dark-card-warm {
    background:
        linear-gradient(145deg, rgba(10, 111, 138, 0.38), rgba(214, 168, 66, 0.18));
}

.overview-dark-card .overview-check-list li,
.overview-reactor-super .overview-check-list li {
    color: rgba(255, 255, 255, 0.84);
}

.overview-dark-card .overview-check-list li::before,
.overview-reactor-super .overview-check-list li::before {
    background: var(--overview-gold);
}

.overview-reactor-super h4 {
    margin: 0;
    color: #ffffff;
    font-size: 1rem;
}

.overview-boiler {
    background:
        linear-gradient(180deg, #ffffff 0%, rgba(238, 247, 248, 0.72) 100%);
}

.overview-sticky-title {
    position: sticky;
    top: calc(var(--header-height) + 28px);
}

.overview-boiler-list {
    display: grid;
    gap: 16px;
}

.overview-boiler-list article {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 18px;
}

.overview-boiler-list span {
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-top: 8px;
    color: var(--overview-blue);
    background: rgba(10, 111, 138, 0.1);
}

.overview-boiler-list p {
    margin: 0;
}

.overview-boiler-list ul {
    grid-column: 2;
    margin-top: 0;
}

.overview-membrane-panels {
    display: grid;
    gap: 18px;
}

.overview-membrane-panels .overview-text-block h3,
.overview-membrane-panels .overview-package-card h3 {
    margin: 8px 0 0 0;
}

.overview-package-card {
    color: #ffffff;
    background:
        linear-gradient(145deg, rgba(9, 42, 54, 0.98), rgba(10, 111, 138, 0.9)),
        url("../images/header-menu-3.png") center / cover;
}

.overview-package-card h3,
.overview-package-card li {
    color: #ffffff;
}

.overview-package-card li::before {
    background: var(--overview-gold);
}

.overview-plc {
    background: #ffffff;
}

.overview-plc-figure {
    margin: 0;
    overflow: hidden;
    border-radius: var(--radius-card);
    background: var(--overview-ink);
    box-shadow: var(--shadow-soft);
}

.overview-plc-figure img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.overview-plc-figure figcaption {
    padding: 18px 20px;
    color: rgba(255, 255, 255, 0.76);
    font-size: 0.94rem;
}

.overview-plc-copy {
    align-self: center;
}

.overview-plc-copy .overview-note {
    background: var(--overview-mist);
}

@media (max-width: 1040px) {
    .overview-product-grid,
    .overview-reactor-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 920px) {
    .overview-hero-inner,
    .overview-intro-grid,
    .overview-split-block,
    .overview-two-column,
    .overview-reactor-feature,
    .overview-reactor-super,
    .overview-boiler-grid,
    .overview-membrane-grid,
    .overview-plc-grid {
        grid-template-columns: 1fr;
    }

    .overview-hero-inner {
        align-items: start;
    }

    .overview-hero-panel {
        max-width: 620px;
    }

    .overview-sticky-title {
        position: static;
    }
}

@media (max-width: 760px) {
    .overview-scope-grid {
        grid-template-columns: 1fr;
    }

    .overview-boiler-list article {
        grid-template-columns: 1fr;
    }

    .overview-boiler-list ul {
        grid-column: auto;
    }
}

@media (max-width: 640px) {
    .overview-hero {
        align-items: end;
    }

    .overview-hero-inner {
        gap: 12px;
    }

    .overview-hero-panel {
        display: none;
    }

    .overview-product-card,
    .overview-text-block,
    .overview-list-panel,
    .overview-package-card,
    .overview-dark-card,
    .overview-reactor-feature,
    .overview-reactor-super,
    .overview-boiler-list article {
        padding: 18px;
    }

    .overview-product-card h3 {
        min-height: 0;
    }
}

@media (orientation: portrait) and (max-width: 640px) {
    .overview-hero {
        min-height: auto;
        aspect-ratio: 12 / 5;
        background-size:
            cover,
            100% auto;
    }

    .overview-hero .container {
        transform: translateY(0);
        padding: 12px 0;
    }

    .overview-hero-copy {
        transform: translateY(-30px);
    }

    .overview-hero-copy h1 {
        font-size: 1.42rem;
        line-height: 1;
    }

    .overview-hero-copy p:not(.section-kicker) {
        margin-top: 7px;
        font-size: 0.66rem;
        line-height: 1.22;
    }
}

/* ==========================================
   PERBAIKAN GAP: BOILER vs REVERSE OSMOSIS
   ========================================== */

/* Tambahkan border bawah pada section Boiler untuk pemisah visual */
.overview-boiler {
    border-bottom: 1px solid rgba(10, 111, 138, 0.15);
    position: relative;
}

/* Tambahkan aksen dekoratif di akhir section Boiler */
.overview-boiler::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--overview-gold), transparent);
    border-radius: 2px;
}

/* Berikan padding-top yang lebih besar pada section Reverse Osmosis */
.overview-membrane {
    padding-top: clamp(80px, 10vw, 120px) !important;
}

/* Untuk mobile, sesuaikan agar tidak terlalu besar */
@media (max-width: 760px) {
    .overview-membrane {
        padding-top: clamp(60px, 8vw, 80px) !important;
    }
    
    .overview-boiler::after {
        width: 60px;
    }
}

/* ==========================================
   PERBAIKAN GAP INTERNAL: REVERSE OSMOSIS
   ========================================== */

/* Hapus margin-top yang tidak perlu dan pastikan konten fit to content */
.overview-membrane-grid {
    margin-top: 0 !important;
    align-items: start !important;
}

/* Pastikan section-head tidak memiliki margin atas */
.overview-membrane-grid .overview-section-head {
    margin-top: 0;
}

/* Untuk tablet dan mobile (saat grid menjadi 1 kolom) */
@media (max-width: 920px) {
    .overview-membrane-grid {
        gap: 24px !important; /* Berikan gap yang lebih besar saat stack vertikal */
    }
    
    .overview-membrane-grid .overview-section-head {
        margin-bottom: 8px; /* Berikan sedikit ruang antara judul dan konten */
    }
}

/* Untuk mobile kecil, sesuaikan lagi */
@media (max-width: 640px) {
    .overview-membrane-grid {
        gap: 20px !important;
    }
}