:root {
        --gh-primary: #16a34a;
        --gh-primary-dark: #15803d;
        --gh-primary-light: #bbf7d0;
        --gh-primary-bg: rgba(22,163,74,0.08);
        --gh-bg: #0f1a12;
        --gh-bg-alt: #162119;
        --gh-bg-dark: #0f1a12;
        --gh-card: #1a2b1f;
        --gh-border: #2d3f33;
        --gh-text: #e8f0ea;
        --gh-text-muted: #9aaa9f;
        --gh-text-light: #6b7f6f;
        --gh-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
        --gh-shadow-md: 0 4px 14px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
        --gh-shadow-lg: 0 10px 30px rgba(0,0,0,0.08), 0 4px 10px rgba(0,0,0,0.04);
        --gh-radius: 16px;
        --gh-radius-sm: 10px;
        --gh-radius-xs: 6px;
    }

    [data-gh-theme="dark"] {
        --gh-bg: #0f1a12;
        --gh-bg-alt: #162119;
        --gh-card: #1a2b1f;
        --gh-border: #2d3f33;
        --gh-text: #e8f0ea;
        --gh-text-muted: #9aaa9f;
        --gh-text-light: #6b7f6f;
        --gh-shadow: 0 1px 3px rgba(0,0,0,0.2);
        --gh-shadow-md: 0 4px 14px rgba(0,0,0,0.25);
        --gh-shadow-lg: 0 10px 30px rgba(0,0,0,0.3);
        --gh-primary-bg: rgba(22,163,74,0.12);
    }

    .gh-page { background: var(--gh-bg); transition: background 0.3s ease, color 0.3s ease; }
    .gh-page, .gh-page * { font-family: 'Plus Jakarta Sans', sans-serif; }
    .gh-page .section-hero, .gh-page .box-white, .gh-page .box-black { background: transparent !important; }

    /* Theme toggle */
    .gh-theme-toggle {
        position: fixed;
        bottom: 24px;
        right: 24px;
        z-index: 999;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        box-shadow: var(--gh-shadow-md);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s ease;
        color: var(--gh-text);
        font-size: 1.2rem;
    }
    .gh-theme-toggle:hover { transform: scale(1.1); box-shadow: var(--gh-shadow-lg); }

    /* ========== CASE STUDY HERO ========== */
    .cs-hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
        position: relative;
        overflow: hidden;
        background: linear-gradient(160deg, #0f1a12 0%, #162119 40%, #1a3322 100%);
        /* padding: 120px 0 80px; */
    }
    .cs-hero::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 800px;
        height: 800px;
        background: radial-gradient(circle, rgba(22,163,74,0.15) 0%, transparent 70%);
        pointer-events: none;
    }
    .cs-hero::after {
        content: '';
        position: absolute;
        bottom: -30%;
        left: -10%;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(22,163,74,0.08) 0%, transparent 70%);
        pointer-events: none;
    }
    .cs-hero-content { position: relative; z-index: 2; }
    .cs-hero-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px 18px;
        background: rgba(22,163,74,0.15);
        border: 1px solid rgba(22,163,74,0.25);
        border-radius: 100px;
        font-size: 0.75rem;
        font-weight: 600;
        color: #4ade80;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        margin-bottom: 1.5rem;
    }
    .cs-hero-title {
        font-size: clamp(2.5rem, 5.5vw, 4.5rem);
        font-weight: 800;
        color: #ffffff;
        line-height: 1.1;
        margin-bottom: 1rem;
    }
    .cs-hero-title span { color: #4ade80; }
    .cs-hero-sub {
        font-size: clamp(1.05rem, 1.6vw, 1.25rem);
        color: rgba(255,255,255,0.7);
        font-weight: 400;
        line-height: 1.7;
        max-width: 600px;
        margin-bottom: 2.5rem;
    }
    .cs-hero-meta {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        padding-top: 2rem;
        margin-top: 2rem;
        border-top: 1px solid rgba(255,255,255,0.1);
    }
    @media (max-width: 767px) {
        .cs-hero-meta { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    }
    .cs-meta-label {
        font-size: 0.7rem;
        font-weight: 700;
        letter-spacing: 0.15em;
        text-transform: uppercase;
        color: #4ade80;
        margin-bottom: 6px;
    }
    .cs-meta-value {
        font-size: 0.95rem;
        color: #ffffff;
        font-weight: 500;
    }

    /* ========== SECTION SHARED ========== */
    .cs-section { padding: 100px 0; position: relative; }
    .cs-section-sm { padding: 60px 0; }
    .cs-label {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 0.7rem;
        font-weight: 700;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--gh-primary);
        margin-bottom: 1rem;
    }
    .cs-label::before {
        content: '';
        width: 24px;
        height: 2px;
        background: var(--gh-primary);
        border-radius: 2px;
    }
    .cs-label-center { justify-content: center; }
    .cs-title {
        font-size: clamp(1.8rem, 3.5vw, 2.75rem);
        font-weight: 800;
        color: var(--gh-text);
        line-height: 1.2;
    }
    .cs-text {
        font-size: 1rem;
        color: var(--gh-text-muted);
        line-height: 1.8;
        font-weight: 400;
    }
    .cs-text-lead {
        font-size: 1.15rem;
        color: var(--gh-text);
        line-height: 1.75;
        font-weight: 500;
    }

    /* ========== IMAGE PLACEHOLDERS (HARDCODED) ========== */
    .img-holder {
        position: relative;
        width: 100%;
        background: var(--gh-bg-alt);
        border: 2px dashed var(--gh-border);
        border-radius: var(--gh-radius);
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.4s ease;
    }
    .img-holder:hover {
        border-color: var(--gh-primary);
        background: var(--gh-primary-bg);
    }
    .img-holder::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(45deg, transparent 48%, rgba(22,163,74,0.06) 49%, rgba(22,163,74,0.06) 51%, transparent 52%),
            linear-gradient(-45deg, transparent 48%, rgba(22,163,74,0.06) 49%, rgba(22,163,74,0.06) 51%, transparent 52%);
        background-size: 60px 60px;
        pointer-events: none;
        opacity: 0.5;
    }
    .img-holder-content {
        position: relative;
        z-index: 2;
        text-align: center;
        padding: 4px;
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .img-holder-content img {
        display: block;
        max-width: 100%;
        max-height: 100%;
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: var(--gh-radius-sm);
    }
    .img-holder-icon {
        width: 56px;
        height: 56px;
        margin: 0 auto 16px;
        border-radius: 14px;
        background: var(--gh-primary-bg);
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .img-holder-icon svg { width: 26px; height: 26px; stroke: var(--gh-primary); fill: none; stroke-width: 1.6; }
    .img-holder-label {
        display: inline-block;
        font-size: 0.65rem;
        font-weight: 700;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--gh-primary);
        background: var(--gh-primary-bg);
        padding: 4px 12px;
        border-radius: 100px;
        margin-bottom: 10px;
    }
    .img-holder-name {
        font-size: 1rem;
        color: var(--gh-text);
        font-weight: 700;
        margin-bottom: 6px;
    }
    .img-holder-dim {
        font-size: 0.75rem;
        color: var(--gh-text-muted);
        font-weight: 500;
    }
    .img-holder-corner {
        position: absolute;
        width: 20px;
        height: 20px;
        border: 2px solid var(--gh-primary);
        z-index: 2;
        opacity: 0.6;
    }
    .img-holder-corner.tl { top: 12px; left: 12px; border-right: none; border-bottom: none; border-radius: 4px 0 0 0; }
    .img-holder-corner.tr { top: 12px; right: 12px; border-left: none; border-bottom: none; border-radius: 0 4px 0 0; }
    .img-holder-corner.bl { bottom: 12px; left: 12px; border-right: none; border-top: none; border-radius: 0 0 0 4px; }
    .img-holder-corner.br { bottom: 12px; right: 12px; border-left: none; border-top: none; border-radius: 0 0 4px 0; }

    /* Dark hero variant */
    .img-holder-dark {
        background: rgba(255,255,255,0.04);
        border: 2px dashed rgba(74,222,128,0.3);
    }
    .img-holder-dark::before {
        background-image:
            linear-gradient(45deg, transparent 48%, rgba(74,222,128,0.05) 49%, rgba(74,222,128,0.05) 51%, transparent 52%),
            linear-gradient(-45deg, transparent 48%, rgba(74,222,128,0.05) 49%, rgba(74,222,128,0.05) 51%, transparent 52%);
    }
    .img-holder-dark:hover { background: rgba(74,222,128,0.08); border-color: rgba(74,222,128,0.6); }
    .img-holder-dark .img-holder-icon { background: rgba(74,222,128,0.12); }
    .img-holder-dark .img-holder-icon svg { stroke: #4ade80; }
    .img-holder-dark .img-holder-label { color: #4ade80; background: rgba(74,222,128,0.12); }
    .img-holder-dark .img-holder-name { color: #ffffff; }
    .img-holder-dark .img-holder-dim { color: rgba(255,255,255,0.5); }
    .img-holder-dark .img-holder-corner { border-color: #4ade80; }

    /* Aspect ratios */
    .ratio-16-9 { aspect-ratio: 16 / 9; }
    .ratio-4-3  { aspect-ratio: 4 / 3; }
    .ratio-3-4  { aspect-ratio: 3 / 4; }
    .ratio-1-1  { aspect-ratio: 1 / 1; }
    .ratio-21-9 { aspect-ratio: 21 / 9; }
    .ratio-2-3  { aspect-ratio: 2 / 3; }

    .img-holder-img {
        position: absolute;
        inset: 0;
        width: 100%;
        object-fit: contain;
        display: block;
        z-index: 1;
    }
    .img-holder-img.img-cover {
        height: 100%;
        object-fit: cover;
    }

    /* ========== PILLAR CARDS (Brief / Problem / Solution) ========== */
    .cs-pillar {
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius);
        padding: 36px 32px;
        height: 100%;
        position: relative;
        transition: all 0.35s ease;
        overflow: hidden;
    }
    .cs-pillar::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, var(--gh-primary), #4ade80);
        opacity: 0;
        transition: opacity 0.35s ease;
    }
    .cs-pillar:hover {
        box-shadow: var(--gh-shadow-lg);
        transform: translateY(-4px);
        border-color: var(--gh-primary);
    }
    .cs-pillar:hover::before { opacity: 1; }
    .cs-pillar-num {
        font-size: 4rem;
        font-weight: 800;
        color: var(--gh-primary);
        opacity: 0.12;
        line-height: 1;
        position: absolute;
        top: 20px;
        right: 28px;
    }
    .cs-pillar-icon {
        width: 56px;
        height: 56px;
        background: var(--gh-primary-bg);
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.25rem;
    }
    .cs-pillar-icon svg { width: 26px; height: 26px; stroke: var(--gh-primary); fill: none; stroke-width: 1.8; }
    .cs-pillar-title {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--gh-text);
        margin-bottom: 0.75rem;
    }
    .cs-pillar-text {
        font-size: 0.9rem;
        color: var(--gh-text-muted);
        line-height: 1.7;
        font-weight: 400;
    }
    .cs-pillar-list {
        list-style: none;
        padding: 0;
        margin: 16px 0 0;
    }
    .cs-pillar-list li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 0.875rem;
        color: var(--gh-text);
        font-weight: 500;
        line-height: 1.55;
        padding: 6px 0;
    }
    .cs-pillar-list li::before {
        content: '';
        flex-shrink: 0;
        width: 6px;
        height: 6px;
        margin-top: 8px;
        border-radius: 50%;
        background: var(--gh-primary);
    }

    /* ========== PROCESS STEPS ========== */
    .cs-step {
        display: grid;
        grid-template-columns: 80px 1fr;
        gap: 32px;
        padding: 32px 0;
        border-bottom: 1px solid var(--gh-border);
    }
    .cs-step:last-child { border-bottom: none; }
    @media (max-width: 767px) { .cs-step { grid-template-columns: 60px 1fr; gap: 20px; } }
    .cs-step-num {
        width: 56px;
        height: 56px;
        border-radius: 14px;
        background: var(--gh-primary-bg);
        color: var(--gh-primary);
        font-size: 1.4rem;
        font-weight: 800;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .cs-step-title {
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--gh-text);
        margin-bottom: 10px;
    }
    .cs-step-text {
        font-size: 0.95rem;
        color: var(--gh-text-muted);
        line-height: 1.75;
        font-weight: 400;
    }
    .cs-step-tags { margin-top: 12px; }
    .cs-step-tag {
        display: inline-block;
        padding: 5px 12px;
        background: var(--gh-bg-alt);
        border: 1px solid var(--gh-border);
        border-radius: 100px;
        color: var(--gh-text-muted);
        font-size: 0.72rem;
        font-weight: 600;
        margin: 4px 6px 4px 0;
        transition: all 0.3s ease;
    }
    .cs-step-tag:hover {
        background: var(--gh-primary-bg);
        border-color: var(--gh-primary);
        color: var(--gh-primary);
    }

    /* ========== STATS BAR ========== */
    .cs-stats {
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius);
        padding: 56px 40px;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
        box-shadow: var(--gh-shadow-md);
    }
    @media (max-width: 767px) {
        .cs-stats { grid-template-columns: repeat(2, 1fr); padding: 36px 24px; gap: 28px; }
    }
    .cs-stat { text-align: center; }
    .cs-stat-num {
        font-size: clamp(2.2rem, 4vw, 3rem);
        font-weight: 800;
        color: var(--gh-primary);
        line-height: 1;
        margin-bottom: 8px;
    }
    .cs-stat-label {
        font-size: 0.78rem;
        font-weight: 600;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--gh-text-muted);
    }

    /* ========== FEATURES GRID ========== */
    .cs-feature {
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius);
        padding: 28px 24px;
        height: 100%;
        transition: all 0.35s ease;
    }
    .cs-feature:hover {
        box-shadow: var(--gh-shadow-md);
        transform: translateY(-3px);
        border-color: var(--gh-primary);
    }
    .cs-feature-icon {
        width: 44px;
        height: 44px;
        background: var(--gh-primary-bg);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 16px;
    }
    .cs-feature-icon svg { width: 22px; height: 22px; stroke: var(--gh-primary); fill: none; stroke-width: 1.8; }
    .cs-feature-title {
        font-size: 1rem;
        font-weight: 700;
        color: var(--gh-text);
        margin-bottom: 6px;
    }
    .cs-feature-text {
        font-size: 0.85rem;
        color: var(--gh-text-muted);
        line-height: 1.65;
    }

    /* ========== MODULES ========== */
    .cs-module {
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius);
        padding: 36px 32px;
        box-shadow: var(--gh-shadow);
        transition: all 0.35s ease;
        height: 100%;
    }
    .cs-module:hover { box-shadow: var(--gh-shadow-md); border-color: var(--gh-primary); }
    .cs-module-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 14px;
        background: var(--gh-primary-bg);
        border: 1px solid rgba(22,163,74,0.2);
        border-radius: 100px;
        font-size: 0.65rem;
        font-weight: 700;
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--gh-primary);
        margin-bottom: 1rem;
    }
    .cs-module-title {
        font-size: clamp(1.4rem, 2.2vw, 1.75rem);
        font-weight: 700;
        color: var(--gh-text);
        line-height: 1.22;
        margin-bottom: 0.6rem;
        letter-spacing: -0.01em;
    }
    .cs-module-brief {
        font-size: 0.88rem;
        color: var(--gh-text-muted);
        line-height: 1.7;
        font-style: italic;
        padding-left: 14px;
        border-left: 3px solid var(--gh-primary);
        margin-bottom: 1.25rem;
    }
    .cs-module-desc {
        font-size: 0.92rem;
        color: var(--gh-text-muted);
        line-height: 1.75;
        margin-bottom: 1.25rem;
    }
    .cs-module-feats { list-style: none; padding: 0; margin: 0 0 1rem; }
    .cs-module-feats li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        padding: 8px 0;
        font-size: 0.85rem;
        color: var(--gh-text-muted);
        line-height: 1.6;
        border-bottom: 1px dashed var(--gh-border);
    }
    .cs-module-feats li:last-child { border-bottom: none; }
    .cs-module-feats li::before {
        content: '';
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--gh-primary);
        margin-top: 8px;
        flex-shrink: 0;
    }
    .cs-module-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 1rem;
    }
    .cs-module-stat {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 12px;
        background: var(--gh-bg-alt);
        border: 1px solid var(--gh-border);
        border-radius: 100px;
        font-size: 0.7rem;
        font-weight: 600;
        color: var(--gh-text);
    }
    .cs-module-stat::before {
        content: '';
        width: 5px;
        height: 5px;
        border-radius: 50%;
        background: var(--gh-primary);
    }
    @media (max-width: 767px) {
        .cs-module { padding: 26px 22px; }
    }

    /* ========== QUOTE ========== */
    .cs-quote {
        background: linear-gradient(160deg, #0f1a12 0%, #162119 40%, #1a3322 100%);
        padding: 100px 0;
        position: relative;
        overflow: hidden;
    }
    .cs-quote::before {
        content: '';
        position: absolute;
        top: -30%;
        left: 10%;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(22,163,74,0.12) 0%, transparent 70%);
        pointer-events: none;
    }
    .cs-quote-mark {
        font-size: 6rem;
        color: #4ade80;
        line-height: 0.5;
        font-weight: 800;
        margin-bottom: 1rem;
    }
    .cs-quote-text {
        font-size: clamp(1.4rem, 2.4vw, 2rem);
        font-weight: 500;
        color: #ffffff;
        line-height: 1.5;
        max-width: 880px;
        margin: 0 auto 28px;
    }
    .cs-quote-author {
        font-size: 0.85rem;
        font-weight: 700;
        letter-spacing: 0.15em;
        text-transform: uppercase;
        color: #4ade80;
    }

    /* ========== CTA ========== */
    .cs-cta-section {
        background: var(--gh-bg-alt);
        padding: 100px 0;
    }
    .cs-cta-card {
        background: linear-gradient(160deg, #0f1a12 0%, #1a3322 100%);
        border-radius: 24px;
        padding: 80px 60px;
        position: relative;
        overflow: hidden;
        text-align: center;
    }
    .cs-cta-card::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -10%;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(22,163,74,0.18) 0%, transparent 70%);
        pointer-events: none;
    }
    @media (max-width: 767px) { .cs-cta-card { padding: 56px 24px; } }
    .cs-cta-title {
        position: relative;
        font-size: clamp(2rem, 4vw, 3rem);
        font-weight: 800;
        color: #ffffff;
        margin-bottom: 1rem;
    }
    .cs-cta-text {
        position: relative;
        font-size: 1.05rem;
        color: rgba(255,255,255,0.7);
        line-height: 1.7;
        max-width: 580px;
        margin: 0 auto 2rem;
    }
    .gh-btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 32px;
        background: var(--gh-primary);
        color: #ffffff;
        font-size: 0.85rem;
        font-weight: 600;
        border-radius: 100px;
        text-decoration: none;
        transition: all 0.3s ease;
        border: none;
    }
    .gh-btn:hover { background: var(--gh-primary-dark); color: #ffffff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(22,163,74,0.25); }
    .gh-btn-outline {
        background: transparent;
        border: 1px solid rgba(255,255,255,0.2);
        color: #ffffff;
    }
    .gh-btn-outline:hover { border-color: #4ade80; color: #4ade80; background: rgba(22,163,74,0.1); }

    /* ========== FOOTER ========== */
    .gh-footer {
        background: #0f1a12;
        padding: 50px 0 32px;
    }
    .gh-footer-brand {
        font-size: 1.5rem;
        font-weight: 800;
        color: #ffffff;
    }
    .gh-footer-brand span { color: #4ade80; }
    .gh-footer-text {
        font-size: 0.85rem;
        color: rgba(255,255,255,0.5);
        line-height: 1.6;
    }
    .gh-footer-link {
        color: rgba(255,255,255,0.6);
        text-decoration: none;
        font-size: 0.85rem;
        transition: color 0.3s;
    }
    .gh-footer-link:hover { color: #4ade80; }
    .gh-footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 24px;
        margin-top: 32px;
    }
    .gh-footer-copy {
        font-size: 0.75rem;
        color: rgba(255,255,255,0.35);
    }
    .gh-footer-copy a { color: #4ade80; text-decoration: none; }

    /* Animations */
    .gh-fade {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .gh-fade.visible { opacity: 1; transform: translateY(0); }

    /* Responsive */
    @media (max-width: 767px) {
        .cs-hero { min-height: auto; padding: 110px 0 60px; }
        .cs-section { padding: 60px 0; }
    }

    /* ========================================================== */
    /* ========== CASE STUDY CARDS — CLICKABLE EXTENSIONS ========= */
    /* ========================================================== */
    .cs-module-title-link {
        color: inherit;
        text-decoration: none;
        background-image: linear-gradient(var(--gh-primary), var(--gh-primary));
        background-size: 0% 1px;
        background-position: 0 100%;
        background-repeat: no-repeat;
        transition: background-size 0.4s ease, color 0.3s ease;
    }
    .cs-module-title-link:hover {
        color: var(--gh-primary);
        background-size: 100% 1px;
    }
    .cs-module-cta {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        margin-top: 1.5rem;
        padding: 12px 22px;
        border: 1px solid var(--gh-primary);
        color: var(--gh-primary);
        background: transparent;
        font-size: 0.78rem;
        letter-spacing: 0.15em;
        text-transform: uppercase;
        text-decoration: none;
        font-weight: 700;
        border-radius: 100px;
        transition: all 0.3s ease;
    }
    .cs-module-cta svg {
        width: 14px;
        height: 14px;
        stroke: currentColor;
        fill: none;
        transition: transform 0.3s ease;
    }
    .cs-module-cta:hover {
        background: var(--gh-primary);
        color: #ffffff;
        transform: translateX(4px);
    }
    .cs-module-cta:hover svg { transform: translateX(3px); }
    .cs-module-img-link {
        display: block;
        text-decoration: none;
        position: relative;
    }
    .cs-module-img { position: relative; overflow: hidden; }
    .cs-module-img img { transition: transform 0.6s ease; }
    .cs-module-img-link:hover .cs-module-img img { transform: scale(1.04); }
    .cs-module-img-link:hover .cs-module-img { border-color: var(--gh-primary); }
    .cs-module-img-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(15,26,18,0) 50%, rgba(15,26,18,0.88) 100%);
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        padding: 22px 26px;
        opacity: 0;
        transition: opacity 0.4s ease;
        z-index: 3;
        pointer-events: none;
    }
    .cs-module-img-link:hover .cs-module-img-overlay { opacity: 1; }
    .cs-module-img-overlay-label {
        font-size: 0.7rem;
        letter-spacing: 0.25em;
        text-transform: uppercase;
        color: #4ade80;
        font-weight: 700;
    }
    .cs-module-img-overlay svg {
        width: 22px;
        height: 22px;
        stroke: #4ade80;
        fill: none;
    }

    /* ========================================================== */
    /* ========== CASE STUDY DETAIL — BREADCRUMB         ========== */
    /* ========================================================== */
    .mod-breadcrumb {
        padding: 130px 0 0;
        font-size: 0.72rem;
        letter-spacing: 0.22em;
        text-transform: uppercase;
        color: var(--gh-text-muted);
        font-weight: 600;
    }
    .mod-breadcrumb a {
        color: var(--gh-text-muted);
        text-decoration: none;
        transition: color 0.3s ease;
    }
    .mod-breadcrumb a:hover { color: var(--gh-primary); }
    .mod-breadcrumb .sep { margin: 0 12px; color: var(--gh-border); }
    .mod-breadcrumb .current { color: var(--gh-primary); }

    /* ========================================================== */
    /* ========== CASE STUDY DETAIL — CAROUSEL HERO      ========== */
    /* ========================================================== */
    .cs-carousel-section {
        padding: 40px 0 100px;
        position: relative;
        overflow: hidden;
    }
    .cs-carousel-head { margin-bottom: 60px; }
    .cs-carousel-title {
        font-size: clamp(2.25rem, 5vw, 4rem);
        font-weight: 800;
        color: var(--gh-text);
        line-height: 1.1;
        margin: 0.5rem 0 0.75rem;
    }
    .cs-carousel-tagline {
        font-size: clamp(1rem, 1.5vw, 1.2rem);
        color: var(--gh-primary);
        font-weight: 700;
        margin-bottom: 0.5rem;
    }
    .cs-carousel-badges {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        margin-top: 1.75rem;
    }
    .mod-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px 16px;
        border: 1px solid var(--gh-border);
        background: var(--gh-card);
        font-size: 0.7rem;
        color: var(--gh-text);
        letter-spacing: 0.12em;
        text-transform: uppercase;
        font-weight: 700;
        border-radius: 100px;
        transition: border-color 0.3s ease, color 0.3s ease;
    }
    .mod-badge::before {
        content: '';
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--gh-primary);
        flex-shrink: 0;
    }
    .mod-badge:hover { border-color: var(--gh-primary); color: var(--gh-primary); }
    .cs-carousel { position: relative; padding: 0; }
    .cs-swiper {
        position: relative;
        border: 1px solid var(--gh-border);
        background: var(--gh-bg-alt);
        overflow: hidden;
        aspect-ratio: 16 / 9;
        max-height: 720px;
        border-radius: var(--gh-radius);
    }
    .cs-swiper:hover { border-color: var(--gh-primary); }
    .cs-slide {
        position: relative;
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
    }
    .cs-slide img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: top center;
        display: block;
    }
    .cs-slide-caption {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 48px 60px;
        background: linear-gradient(180deg, rgba(15,26,18,0) 0%, rgba(15,26,18,0.88) 70%);
        z-index: 2;
    }
    .cs-slide-caption-eyebrow {
        display: inline-block;
        font-size: 0.65rem;
        letter-spacing: 0.3em;
        text-transform: uppercase;
        color: #4ade80;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .cs-slide-caption-title {
        font-size: clamp(1.3rem, 2.2vw, 2rem);
        font-weight: 700;
        color: #ffffff;
        line-height: 1.2;
        margin: 0;
    }
    .cs-swiper .swiper-button-prev,
    .cs-swiper .swiper-button-next {
        width: 52px;
        height: 52px;
        background: rgba(15,26,18,0.7);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(74,222,128,0.3);
        color: #4ade80;
        border-radius: 50%;
        transition: all 0.3s ease;
        top: 50%;
        margin-top: -26px;
    }
    .cs-swiper .swiper-button-prev::after,
    .cs-swiper .swiper-button-next::after { content: none; }
    .cs-swiper .swiper-button-prev svg,
    .cs-swiper .swiper-button-next svg {
        width: 20px;
        height: 20px;
        stroke: #4ade80;
        fill: none;
    }
    .cs-swiper .swiper-button-prev { left: 24px; }
    .cs-swiper .swiper-button-next { right: 24px; }
    .cs-swiper .swiper-button-prev:hover,
    .cs-swiper .swiper-button-next:hover {
        background: var(--gh-primary);
        border-color: var(--gh-primary);
    }
    .cs-swiper .swiper-button-prev:hover svg,
    .cs-swiper .swiper-button-next:hover svg { stroke: #ffffff; }
    .cs-swiper .swiper-pagination {
        bottom: 22px;
        z-index: 4;
    }
    .cs-swiper .swiper-pagination-bullet {
        width: 28px;
        height: 3px;
        background: rgba(255,255,255,0.45);
        border-radius: 100px;
        opacity: 1;
        margin: 0 4px !important;
        transition: background 0.3s ease, width 0.3s ease;
    }
    .cs-swiper .swiper-pagination-bullet-active {
        background: #4ade80;
        width: 48px;
    }
    @media (max-width: 991px) {
        .cs-swiper { aspect-ratio: 16 / 10; }
        .cs-slide-caption { padding: 28px 24px; }
        .cs-swiper .swiper-button-prev { left: 12px; }
        .cs-swiper .swiper-button-next { right: 12px; }
        .cs-swiper .swiper-button-prev,
        .cs-swiper .swiper-button-next { width: 42px; height: 42px; margin-top: -21px; }
    }
    @media (max-width: 575px) {
        .cs-swiper { aspect-ratio: 4 / 3; }
        .cs-slide-caption { padding: 18px 16px; }
        .cs-swiper .swiper-pagination-bullet { width: 18px; }
        .cs-swiper .swiper-pagination-bullet-active { width: 32px; }
    }

    /* ========================================================== */
    /* ========== CASE STUDY DETAIL — SECTION BREAKDOWN  ========== */
    /* ========================================================== */
    .cs-breakdown {
        padding: 100px 0;
        background: var(--gh-bg-alt);
        border-top: 1px solid var(--gh-border);
        border-bottom: 1px solid var(--gh-border);
    }
    .cs-breakdown-head { margin-bottom: 70px; }
    .cs-breakdown-row {
        margin-bottom: 90px;
        padding-bottom: 90px;
        border-bottom: 1px solid var(--gh-border);
    }
    .cs-breakdown-row:last-child {
        margin-bottom: 0;
        padding-bottom: 0;
        border-bottom: none;
    }
    .cs-breakdown-img {
        position: relative;
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius);
        overflow: hidden;
        aspect-ratio: 16 / 11;
        transition: border-color 0.4s ease;
    }
    .cs-breakdown-img:hover { border-color: var(--gh-primary); }
    .cs-breakdown-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: top center;
        transition: transform 0.8s ease;
    }
    .cs-breakdown-img:hover img { transform: scale(1.03); }
    .cs-breakdown-img-tag {
        position: absolute;
        top: 18px;
        left: 18px;
        z-index: 3;
        padding: 8px 16px;
        /* background: rgba(15,26,18,0.78); */
        backdrop-filter: blur(10px);
        border: 1px solid rgba(74,222,128,0.35);
        font-size: 0.78rem;
        letter-spacing: 0.18em;
        color: #4ade80;
        font-weight: 700;
        border-radius: 100px;
    }
    .cs-breakdown-body { padding: 0; }
    .cs-breakdown-num {
        font-size: 0.7rem;
        letter-spacing: 0.3em;
        text-transform: uppercase;
        color: var(--gh-primary);
        font-weight: 700;
        margin-bottom: 0.75rem;
    }
    .cs-breakdown-title {
        font-size: clamp(1.6rem, 2.6vw, 2.25rem);
        font-weight: 800;
        color: var(--gh-text);
        line-height: 1.2;
        margin-bottom: 0.5rem;
    }
    .cs-breakdown-text {
        font-size: 0.98rem;
        line-height: 1.85;
        font-weight: 400;
        color: var(--gh-text-muted);
        margin: 1.25rem 0 1.5rem;
    }
    .cs-breakdown-feats {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .cs-breakdown-feats li {
        display: flex;
        gap: 14px;
        padding: 12px 0;
        font-size: 0.9rem;
        color: var(--gh-text);
        line-height: 1.6;
        font-weight: 500;
        border-bottom: 1px solid var(--gh-border);
    }
    .cs-breakdown-feats li:last-child { border-bottom: none; }
    .cs-breakdown-feats li::before {
        content: '';
        flex-shrink: 0;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--gh-primary);
        margin-top: 8px;
    }
    @media (max-width: 991px) {
        .cs-breakdown { padding: 70px 0; }
        .cs-breakdown-row { margin-bottom: 60px; padding-bottom: 60px; }
        .cs-breakdown-body { padding: 24px 0 0; }
    }

    /* ========================================================== */
    /* ========== CASE STUDY DETAIL — PREV / NEXT NAV    ========== */
    /* ========================================================== */
    .mod-nav {
        background: var(--gh-bg);
        padding: 80px 0;
        border-top: 1px solid var(--gh-border);
    }
    .mod-nav-card {
        display: block;
        padding: 32px 36px;
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius);
        text-decoration: none;
        height: 100%;
        transition: all 0.4s ease;
        position: relative;
        overflow: hidden;
    }
    .mod-nav-card::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(22,163,74,0.06) 0%, transparent 60%);
        opacity: 0;
        transition: opacity 0.4s ease;
        pointer-events: none;
    }
    .mod-nav-card:hover {
        border-color: var(--gh-primary);
        transform: translateY(-3px);
        box-shadow: var(--gh-shadow-lg);
    }
    .mod-nav-card:hover::before { opacity: 1; }
    .mod-nav-card.disabled {
        opacity: 0.45;
        pointer-events: none;
    }
    .mod-nav-label {
        font-size: 0.7rem;
        letter-spacing: 0.25em;
        text-transform: uppercase;
        color: var(--gh-primary);
        font-weight: 700;
        display: inline-flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 1.25rem;
    }
    .mod-nav-label svg { width: 14px; height: 14px; stroke: currentColor; fill: none; }
    .mod-nav-card.next { text-align: right; }
    .mod-nav-card.next .mod-nav-label { justify-content: flex-end; }
    .mod-nav-num {
        font-size: 0.78rem;
        color: var(--gh-text-muted);
        font-weight: 600;
        margin-bottom: 0.4rem;
        letter-spacing: 0.12em;
        text-transform: uppercase;
    }
    .mod-nav-title {
        font-size: clamp(1.05rem, 1.7vw, 1.35rem);
        font-weight: 700;
        color: var(--gh-text);
        line-height: 1.3;
    }
    .mod-nav-back {
        text-align: center;
        display: block;
        padding: 28px 36px;
        background: transparent;
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius);
        text-decoration: none;
        height: 100%;
        transition: all 0.4s ease;
    }
    .mod-nav-back:hover {
        border-color: var(--gh-primary);
        background: var(--gh-bg-alt);
        box-shadow: var(--gh-shadow-md);
    }
    .mod-nav-back .mod-nav-label { margin-bottom: 0.4rem; justify-content: center; }
    .mod-nav-back .mod-nav-title { font-size: 1.05rem; }

    /* ========================================================== */
    /* ========== CASE STUDY DETAIL — CHIP STRIP         ========== */
    /* ========================================================== */
    .mod-strip { padding: 80px 0 100px; }
    .mod-strip-head { text-align: center; margin-bottom: 50px; }
    .mod-chip {
        display: block;
        padding: 22px 22px;
        background: var(--gh-card);
        border: 1px solid var(--gh-border);
        border-radius: var(--gh-radius-sm);
        text-decoration: none;
        transition: all 0.3s ease;
        height: 100%;
    }
    .mod-chip:hover {
        border-color: var(--gh-primary);
        transform: translateY(-2px);
        box-shadow: var(--gh-shadow-md);
    }
    .mod-chip.active {
        border-color: var(--gh-primary);
        background: linear-gradient(135deg, var(--gh-primary-bg) 0%, var(--gh-card) 100%);
    }
    .mod-chip-num {
        font-size: 0.78rem;
        color: var(--gh-primary);
        letter-spacing: 0.15em;
        font-weight: 700;
        margin-bottom: 0.6rem;
    }
    .mod-chip-title {
        font-size: 1rem;
        color: var(--gh-text);
        font-weight: 700;
        line-height: 1.3;
    }

    @media (max-width: 767px) {
        .mod-breadcrumb { padding-top: 100px; font-size: 0.65rem; letter-spacing: 0.18em; }
        .mod-nav { padding: 60px 0; }
        .mod-nav-card { padding: 26px 22px; }
        .mod-nav-card.next { text-align: left; }
        .mod-nav-card.next .mod-nav-label { justify-content: flex-start; }
        .mod-strip { padding: 60px 0 80px; }
    }

    /* ========== STRUCTURAL UTILITIES (Biry-parity) ========== */
    .cs-figure { margin: 0; }
    .cs-figure-caption {
        margin-top: 12px;
        text-align: center;
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--gh-text-muted);
    }

    .cs-divider {
        width: 60px;
        height: 1px;
        background: var(--gh-primary);
        margin-top: 18px;
        margin-bottom: 6px;
    }
    .cs-divider-center { margin-left: auto; margin-right: auto; }

    .cs-cta-btn,
    .cs-cta-btn-outline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 32px;
        font-size: 0.85rem;
        font-weight: 600;
        border-radius: 100px;
        text-decoration: none;
        transition: all 0.3s ease;
        margin: 0 6px 12px;
    }
    .cs-cta-btn {
        background: var(--gh-primary);
        color: #ffffff;
        border: 1px solid var(--gh-primary);
    }
    .cs-cta-btn:hover {
        background: var(--gh-primary-dark);
        border-color: var(--gh-primary-dark);
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(22,163,74,0.25);
    }
    .cs-cta-btn-outline {
        background: transparent;
        color: var(--gh-primary);
        border: 1px solid rgba(22,163,74,0.4);
    }
    .cs-cta-btn-outline:hover {
        border-color: var(--gh-primary);
        color: var(--gh-primary-dark);
        background: var(--gh-primary-bg);
    }

    .cs-footer-credit {
        text-align: center;
        padding: 36px 16px;
        border-top: 1px solid var(--gh-border);
    }
    .cs-footer-credit p {
        margin: 0;
        font-size: 0.85rem;
        color: var(--gh-text-muted);
        letter-spacing: 0.04em;
    }

/* Page + shared header background follow this project's theme (override global .bg-neutral-50) */
html, body, .gh-page { background: linear-gradient(160deg, #0f1a12 0%, #162119 40%, #1a3322 100%) !important; }
header.bg-neutral-50 { background: linear-gradient(160deg, #0f1a12 0%, #162119 40%, #1a3322 100%) !important; }