.hero-section {
        --brand-primary: #0F6B4B;
        /* Deep Emerald Green */
        --brand-accent: #D4AF37;
        /* Luxury Gold */
        --brand-dark: #073525;
        --text-primary: #111612;
        /* Rich Deep Forest Charcoal */
        --text-muted: #55605a;
        --bg-main: #FFFFFF;
        --shadow-elegant: 0 30px 60px -15px rgba(15, 107, 75, 0.05), 0 10px 30px -10px rgba(0, 0, 0, 0.03);
        --border-subtle: rgba(15, 107, 75, 0.08);

        width: 100%;
        min-height: calc(100vh - 90px);
        display: flex;
        align-items: center;
        overflow: hidden;
        position: relative;
        isolation: isolate;
        padding: clamp(64px, 8vw, 120px) 20px;
        color: var(--text-primary);
        background: transparent;
        margin-top: -70px;
    }
 
    /* Architectural Background Mesh Grid */
    .hero-section::before {
        content: "";
        position: absolute;
        inset: 0;
        z-index: -1;
        background-image:
            linear-gradient(var(--border-subtle) 1px, transparent 1px),
            linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
        background-size: 80px 80px;
        mask-image: radial-gradient(circle at 20% 30%, black 30%, transparent 80%);
        opacity: 0.6;
    }

    .hero-shell {
        width: min(1240px, 100%);
        margin: 0 auto;
        display: grid;
        grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr);
        align-items: center;
        gap: clamp(40px, 6vw, 84px);
    }

    .hero-left,
    .hero-right {
        min-width: 0;
        position: relative;
        z-index: 2;
    }

    /* PREMIUM LEFT SIDE STYLING */
    .badge-wrapper {
        position: relative;
        display: inline-block;
        margin-bottom: 28px;
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 8px 18px;
        border-radius: 100px;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(240, 245, 242, 0.8));
        border: 1px solid rgba(15, 107, 75, 0.15);
        color: var(--brand-dark);
        font-size: 13px;
        font-weight: 700;
        letter-spacing: 0.03em;
        text-transform: uppercase;
        box-shadow: 0 10px 25px -5px rgba(15, 107, 75, 0.08);
        position: relative;
        z-index: 2;
    }

    .hero-badge i {
        color: var(--brand-accent);
        font-size: 14px;
    }

    .badge-glow {
        position: absolute;
        inset: -4px;
        background: var(--brand-accent);
        border-radius: 100px;
        opacity: 0.15;
        filter: blur(8px);
        z-index: 1;
    }

    .hero-title {
        max-width: 780px;
        font-size: clamp(44px, 5.2vw, 72px);
        font-weight: 900;
        line-height: 1.05;
        letter-spacing: -0.03em;
        color: var(--text-primary);
        margin-bottom: 28px;
    }

    .title-row {
        display: block;
    }

    /* Premium Dynamic Color Shifting Text */
    .color-shifting-text {
        background: linear-gradient(300deg,
                var(--brand-primary),
                var(--brand-accent),
                var(--brand-dark),
                var(--brand-primary));
        background-size: 400% 400%;
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        animation: textGradientShift 9s ease infinite;
    }

    @keyframes textGradientShift {
        0% {
            background-position: 0% 50%;
        }

        50% {
            background-position: 100% 50%;
        }

        100% {
            background-position: 0% 50%;
        }
    }

    .hero-title .shine-gold {
        color: var(--brand-dark);
        position: relative;
        display: inline-block;
        background: linear-gradient(135deg, var(--brand-dark) 30%, var(--brand-primary));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .hero-title .shine-gold::after {
        content: "";
        position: absolute;
        bottom: 4px;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, var(--brand-accent), transparent);
        border-radius: 2px;
    }

    .hero-description {
        color: var(--text-muted);
        font-size: clamp(16px, 1.2vw, 19px);
        line-height: 1.65;
        margin: 0 0 40px;
        max-width: 580px;
        font-weight: 400;
    }

    /* PREMIUM ACTION BUTTONS */
    .hero-buttons {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        margin-bottom: 54px;
    }

    .hero-btn {
        min-height: 56px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 12px;
        text-decoration: none;
        padding: 14px 32px;
        border-radius: 12px;
        font-weight: 700;
        font-size: 15px;
        transition: all .3s cubic-bezier(0.16, 1, 0.3, 1);
        white-space: nowrap;
    }
.herobtn {
        min-height: 56px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 12px;
        text-decoration: none;
        padding: 14px 32px;
        border-radius: 12px;
        font-weight: 700;
        font-size: 15px;
        transition: all .3s cubic-bezier(0.16, 1, 0.3, 1);
        white-space: nowrap;
    }

    .hero-btn-primary {
        background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark));
        color: #fff;
        box-shadow: 0 20px 40px -10px rgba(15, 107, 75, 0.3);
    }

    .hero-btn-primary i {
        transition: transform 0.3s ease;
    }

    .hero-btn-primary:hover {
        transform: translateY(-3px);
        box-shadow: 0 25px 45px -8px rgba(15, 107, 75, 0.4);
    }

    .hero-btn-primary:hover i {
        transform: translateX(4px);
    }

    .hero-btn-outline {
        position: relative;
        overflow: hidden;
        background: transparent;
        border: none; /* Removed border, padding will handle spacing */
        color: black;
        
    }

    .hero-btn-outline::before {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        width: 250%; /* Larger size to ensure full coverage on spin */
        height: 250%;
        z-index: 1; /* Bring border above the inner background */
        background: conic-gradient(
            from 0deg, 
            transparent 0%, 
            transparent 70%, 
            var(--brand-accent) 85%, 
            var(--brand-primary) 95%, 
            transparent 100%
        );
        animation: animatedBorderSpin 5s linear infinite;
        transform-origin: center center;
        transform: translate(-50%, -50%);
    }

    .hero-btn-outline span, .hero-btn-outline i {
        position: relative; /* Changed to relative for z-index context */
        z-index: 2; /* Ensure text/icon is on top of the border */
        background: rgba(255, 255, 255, 0.8);
        backdrop-filter: blur(10px);
        padding: 15px 33px; /* Adjusted padding to account for border */
        border-radius: 11px; /* Inner radius */
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 12px;
        transition: all .3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .hero-btn-outline:hover {
        transform: translateY(-3px);
    }

    .hero-btn-outline:hover span, .hero-btn-outline:hover i {
        background: var(--brand-primary);
        color:black;
    }

    /* COUNTERS LAYOUT */
    .hero-counter {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 20px;
        max-width: 720px;
    }

    .counter-item {
        padding: 24px 20px;
        border-radius: 16px;
        background: #fff;
        border: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-elegant);
        transition: transform 0.3s ease, border-color 0.3s ease;
    }

    .counter-item:hover {
        transform: translateY(-4px);
        border-color: rgba(15, 107, 75, 0.2);
    }

    .highlight-item {
        background: linear-gradient(135deg, #f7faf8, #ffffff);
        border-color: rgba(15, 107, 75, 0.2);
        position: relative;
    }

    .highlight-item::before {
        content: "";
        position: absolute;
        top: 0;
        left: 24px;
        right: 24px;
        height: 3px;
        background: var(--brand-accent);
        border-radius: 0 0 4px 4px;
    }

    .counter-header {
        display: flex;
        align-items: baseline;
        gap: 2px;
        margin-bottom: 6px;
    }

    .counter-item h2 {
        color: var(--brand-dark);
        font-size: clamp(22px, 3vw, 34px);
        font-weight: 800;
        line-height: 1;
        margin: 0;
        letter-spacing: -0.02em;
    }

    .plus-sign {
        color: var(--brand-accent);
        font-size: 20px;
        font-weight: 700;
    }

    .counter-label {
        color: var(--text-muted);
        font-size: 13px;
        font-weight: 600;
        line-height: 1.4;
        display: block;
    }

    /* RIGHT SIDE MAP STYLING & ANIMATED CONIC BORDER */
    .map-card {
        position: relative;
        border-radius: 16px;
        background: var(--bg-main);
        box-shadow: var(--shadow-elegant);
        overflow: hidden;
        padding: 2px;
        /* Smooth padding gap execution for border */
    }

    .map-card::before {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        width: 175%;
        height: 175%;
        background: conic-gradient(from 0deg, transparent 0%, transparent 60%, var(--brand-accent) 85%, var(--brand-primary) 95%, transparent 100%);
        animation: animatedBorderSpin 6s linear infinite;
        transform-origin: center center;
        transform: translate(-50%, -50%);
    }

    /* RIGHT SIDE MAP STYLING & ANIMATED CONIC BORDER */
    .map-card {
        position: relative;
        border-radius: 16px;
        background: var(--bg-main);
        box-shadow: var(--shadow-elegant);
        overflow: hidden;
        padding: 2px;
        /* Smooth padding gap execution for border */
    }

    @keyframes animatedBorderSpin {
        0% {
            transform: translate(-50%, -50%) rotate(0deg);
        }

        100% {
            transform: translate(-50%, -50%) rotate(360deg);
        }
    }

    .map-card-inner {
        background: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(12px);
        border-radius: 14px;
        position: relative;
        z-index: 2;
    }

    .map-card-inner::before {
        content: "";
        position: absolute;
        width: 340px;
        height: 340px;
        right: -90px;
        top: -110px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(212, 175, 55, .25), rgba(212, 175, 55, 0) 70%);
        filter: blur(10px);
        z-index: -1;
    }

    .map-header {
        position: relative;
        z-index: 4;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 18px;
        padding: 18px 20px 0;
        color: var(--brand-primary);
        font-size: 14px;
        font-weight: 700;
        animation: blowingGlow 4s ease-in-out infinite;
    }

    .map-header strong {
        color: var(--brand-accent);
    }

    .world-map-wrapper {
        position: relative;
        width: 100%;
        aspect-ratio: 1.18 / 1;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: clamp(20px, 4vw, 42px);
    }

    .world-map {
        width: 100%;
        max-width: 620px;
        display: block;
        position: relative;
        z-index: 2;
        filter: drop-shadow(0 20px 28px rgba(0, 0, 0, .34));
    }

    .world-map[src$="./static/img/world-map.png"] {
        min-height: 280px;
        object-fit: contain;
    }

    .map-fallback {
        position: absolute;
        inset: 16% 8% 12%;
        z-index: 1;
        opacity: .82;
        background: radial-gradient(circle at center, rgba(15, 107, 75, 0.1) 0%, rgba(15, 107, 75, 0) 70%);
        border-radius: 50%;
        border: 1px solid rgba(15, 107, 75, .08);
        transform: scale(1.05);
    }

    .tooltip-container {
        position: absolute;
        inset: 0;
        z-index: 3;
    }

    .map-tooltip {
        position: absolute;
        transform: translate(-50%, -50%);
        display: none;
        text-align: center;
    }

    .tooltip-box {
        background: var(--brand-primary);
        color: #fff;
        padding: 8px 12px;
        border-radius: 6px;
        font-size: 13px;
        font-weight: 800;
        white-space: nowrap;
        margin-bottom: 10px;
        box-shadow: 0 12px 28px rgba(15, 107, 75, .25);
    }

    .pulse {
        width: 13px;
        height: 13px;
        border-radius: 50%;
        background: var(--brand-accent);
        margin: auto;
        position: relative;
        box-shadow: 0 0 18px rgba(212, 175, 55, .85), 0 0 28px rgba(212, 175, 55, .58);
    }

    .pulse::after {
        content: "";
        position: absolute;
        inset: -8px;
        border-radius: inherit;
        border: 1px solid rgba(212, 175, 55, .58);
        animation: heroPulse 1.6s ease-out infinite;
    }

    @keyframes heroPulse {
        to {
            transform: scale(1.9);
            opacity: 0;
        }
    }

    @keyframes blowingGlow {

        0%,
        100% {
            text-shadow: 0 0 6px rgba(15, 107, 75, 0.2);
        }

        50% {
            text-shadow: 0 0 16px rgba(15, 107, 75, 0.5);
        }
    }

    @media (max-width: 992px) {
        .hero-section {
            min-height: auto;
            padding-top: 64px;
        }

        .hero-shell {
            grid-template-columns: 1fr;
            text-align: center;
        }

        .hero-description,
        .hero-title,
        .hero-counter {
            margin-left: auto;
            margin-right: auto;
        }

        .hero-title .shine-gold::after {
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
        }

        .counter-header {
            justify-content: center;
        }

        .hero-buttons {
            justify-content: center;
        }

        .world-map-wrapper {
            max-width: 680px;
            margin: 0 auto;
        }
    }

    @media (max-width: 640px) {
        .hero-section {
            padding-left: 16px;
            padding-right: 16px;
            border-radius: 0 0 24px 24px;
        }

        .hero-title {
            font-size: 36px;
        }

        .hero-buttons,
        .hero-btn {
            width: 100%;
        }

        .hero-counter {
            grid-template-columns: 1fr;
            gap: 14px;
        }

        .counter-item {
            padding: 20px;
        }

        .map-header {
            align-items: flex-start;
            flex-direction: column;
            gap: 4px;
        }

        .world-map-wrapper {
            aspect-ratio: 1 / 1;
            padding: 16px;
        }

        .tooltip-box {
            font-size: 11px;
            padding: 7px 9px;
        }
    }

  
/* COMPREHENSIVE DESIGN SYSTEM STYLING PARITY map and flip cards  */
    .appearance-section {
        --brand-primary: #0F6B4B; 
        --brand-accent: #D4AF37; 
        --brand-dark: #073525;
        --text-primary: #111612; 
        --text-muted: #55605a;
        --bg-main: #FFFFFF;
        --bg-tint: #f4f8f5;
        --shadow-elegant: 0 30px 60px -15px rgba(15, 107, 75, 0.05), 0 10px 30px -10px rgba(0, 0, 0, 0.02);
        --border-subtle: rgba(15, 107, 75, 0.08);

        padding: clamp(80px, 12vw, 140px) 20px;
        background-color: var(--bg-main);
        position: relative;
        overflow: hidden;
    }

    .appearance-shell {
        width: min(1240px, 100%);
        margin: 0 auto;
        display: grid;
        grid-template-columns: minmax(0, 1.08fr) minmax(400px, 0.92fr);
        align-items: center;
        gap: clamp(40px, 6vw, 84px);
        position: relative;
        z-index: 2;
    }

    .appearance-title {
        font-size: clamp(34px, 3.8vw, 48px);
        font-weight: 900;
        line-height: 1.15;
        letter-spacing: -0.03em;
        color: var(--text-primary);
        margin-bottom: 16px;
    }

    .appearance-title span { display: block; }

    .appearance-description {
        color: var(--text-muted);
        font-size: clamp(15px, 1.1vw, 17px);
        line-height: 1.65;
        margin-bottom: 32px;
        max-width: 580px;
    }

    /* DYNAMIC DATA COMMAND MONITOR (LEFT SIDE) */
    .market-command-panel {
        background: var(--brand-dark);
        border-radius: 20px;
        padding: 24px;
        color: #ffffff;
        box-shadow: 0 25px 50px -12px rgba(7, 53, 37, 0.25);
        margin-bottom: 24px;
    }

    .region-switcher-bar {
        display: flex;
        gap: 8px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        padding-bottom: 16px;
        margin-bottom: 18px;
    }

    .region-pill {
        border: 1px solid rgba(255,255,255,0.1);
        background: transparent;
        padding: 8px 16px;
        border-radius: 100px;
        color: rgba(255,255,255,0.6);
        font-size: 13px;
        font-weight: 700;
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .region-pill.active {
        background: var(--brand-primary);
        color: #ffffff;
        border-color: var(--brand-primary);
        box-shadow: 0 4px 12px rgba(15, 107, 75, 0.4);
    }

    .hub-monitor-display {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .live-ping {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 11px;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: var(--brand-accent);
        font-weight: 700;
    }

    .ping-dot {
        width: 6px;
        height: 6px;
        background: var(--brand-accent);
        border-radius: 50%;
        animation: pulseFade 1.4s infinite ease-in-out;
    }

    @keyframes pulseFade {
        0%, 100% { opacity: 0.3; transform: scale(0.9); }
        50% { opacity: 1; transform: scale(1.2); box-shadow: 0 0 8px var(--brand-accent); }
    }

    .dynamic-region-title {
        margin: 4px 0 0 0;
        font-size: 22px;
        font-weight: 800;
        letter-spacing: -0.01em;
    }

    .monitor-stats-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        background: rgba(255,255,255,0.03);
        padding: 16px;
        border-radius: 12px;
        border: 1px solid rgba(255,255,255,0.04);
    }

    .monitor-stat {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .stat-num {
        font-size: clamp(28px, 3vw, 36px);
        font-weight: 900;
        color: #ffffff;
        line-height: 1;
        margin-bottom: 4px;
    }

    .stat-lbl {
        font-size: 11px;
        color: rgba(255,255,255,0.4);
        text-transform: uppercase;
        font-weight: 700;
        letter-spacing: 0.04em;
    }

    .stat-txt {
        font-size: 15px;
        font-weight: 700;
        color: var(--brand-accent);
        margin-top: 4px;
    }

    .telemetry-log {
        background: #041f16;
        padding: 12px 16px;
        border-radius: 8px;
        font-family: monospace;
        font-size: 12px;
        border-left: 3px solid var(--brand-primary);
    }

    .log-row { display: flex; gap: 12px; }
    .log-time { color: var(--brand-accent); font-weight: 700; }
    .log-msg { color: rgba(255,255,255,0.85); }

    /* HIGH-END WORLD MAP MATRIX VISUAL */
.appearance-map-container {
    position: relative;
    background: #04140f; /* Darker luxury context to allow glowing strokes to pop */
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: 20px;
    box-shadow: 0 40px 80px -20px rgba(7, 53, 37, 0.4);
    padding: 24px;
    overflow: hidden;
}

.appearance-map-inner {
    position: relative;
    width: 100%;
    aspect-ratio: 1.6 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.appearance-vector-map {
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: opacity(0.4) brightness(1.2);
    z-index: 1;
}

/* CANVAS FLIGHT PATH ENGINE */
.map-svg-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.flight-route {
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    opacity: 0;
    transition: opacity 0.4s ease;
}

/* Individual active paths get custom corporate brand gradients injected via CSS dash arrays */
.flight-route.active {
    opacity: 0.85;
    stroke: var(--brand-accent);
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    animation: drawLineDash 1.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    filter: drop-shadow(0 0 4px var(--brand-accent));
}

@keyframes drawLineDash {
    to { stroke-dashoffset: 0; }
}


.geo-ripple-layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
}

.hq-marker-node {
    position: absolute;
    width: 10px;
    height: 10px;
    transform: translate(-50%, -50%);
}

.hq-core {
    display: block;
    width: 100%;
    height: 100%;
    background: #ffffff;
    border: 2px solid var(--brand-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px #ffffff;
}

.geo-marker-node {
    position: absolute;
    width: 20px;
    height: 20px;
    transform: translate(-50%, -50%);
}

.core-point {
    position: absolute;
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    top: 6px;
    left: 6px;
    transition: all 0.4s ease;
}

.pulse-ring {
    position: absolute;
    inset: 0;
    border: 1.5px solid var(--brand-accent);
    border-radius: 50%;
    opacity: 0;
    transform: scale(0.3);
}

/* Cascade Animation Timings for multi-layered micro pulses */
.geo-marker-node.active .core-point {
    background: var(--brand-accent);
    box-shadow: 0 0 14px var(--brand-accent);
}

.geo-marker-node.active .ring-1 {
    animation: luxuriousPulse 2.2s infinite cubic-bezier(0.16, 1, 0.3, 1);
}

.geo-marker-node.active .ring-2 {
    animation: luxuriousPulse 2.2s infinite cubic-bezier(0.16, 1, 0.3, 1);
    animation-delay: 0.7s;
}

@keyframes luxuriousPulse {
    0% { transform: scale(0.3); opacity: 0.9; stroke-width: 2; }
    50% { opacity: 0.4; }
    100% { transform: scale(3.2); opacity: 0; stroke-width: 0.5; }
}

    /* RIGHT FIELD: EXPOSITION GALLERY SHOWCASE */
    .exhibition-portfolio-container {
        background: var(--bg-tint);
        border: 1px solid var(--border-subtle);
        border-radius: 24px;
        padding: clamp(30px, 4vw, 48px);
        box-shadow: var(--shadow-elegant);
    }

    .portfolio-meta-header { margin-bottom: 36px; }

    .portfolio-tag {
        font-size: 11px;
        text-transform: uppercase;
        letter-spacing: 0.06em;
        font-weight: 700;
        color: var(--brand-primary);
        display: block;
        margin-bottom: 10px;
    }

    .portfolio-meta-header h3 {
        font-size: 24px;
        font-weight: 800;
        color: var(--brand-dark);
        margin: 0 0 12px 0;
        letter-spacing: -0.02em;
    }

    .portfolio-meta-header p {
        font-size: 14px;
        line-height: 1.6;
        color: var(--text-muted);
        margin: 0;
    }

    .exhibition-gallery-stack {
        position: relative;
        width: 100%;
        aspect-ratio: 1 / 1.05;
        perspective: 2000px;
        margin-bottom: 32px;
    }

    .expo-card-3d {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        transform-style: preserve-3d;
        transform-origin: left center;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: transform 0.85s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.6s ease, visibility 0.85s;
        z-index: 1;
    }

    .expo-card-inner {
        width: 100%;
        height: 100%;
        background: var(--bg-main);
        border-radius: 18px;
        border: 1px solid var(--border-subtle);
        box-shadow: 0 25px 50px -15px rgba(7, 53, 37, 0.08);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
    }

    .expo-card-3d.active {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: rotateY(0deg) translateX(0) translateZ(0);
        z-index: 5;
    }

    .expo-card-3d.flipped {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: rotateY(-110deg) translateX(-60px) scale(0.9);
        z-index: 1;
    }

    .expo-card-3d.queued {
        opacity: 0.5;
        visibility: visible;
        pointer-events: none;
        transform: rotateY(8deg) translateX(14px) translateZ(-30px) scale(0.96);
        z-index: 3;
    }

    .expo-image-frame {
        width: 100%;
        aspect-ratio: 1.6 / 1;
        position: relative;
        overflow: hidden;
        background: var(--brand-dark);
    }

    .expo-img {
        width: 100%;
        height: 100%;
        object-fit: fill;
        transition: transform 0.6s ease;
        filter: grayscale(100%);
    }

    .expo-img-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(7, 53, 37, 0.2), transparent);
    }

    .expo-card-details {
        padding: clamp(20px, 3vw, 28px);
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }

    .expo-location {
        font-size: 11px;
        font-weight: 700;
        color: var(--brand-accent);
        text-transform: uppercase;
        letter-spacing: 0.04em;
        margin-bottom: 6px;
        display: block;
    }

    .expo-card-details h4 {
        font-size: 18px;
        font-weight: 800;
        color: var(--brand-dark);
        margin: 0 0 10px 0;
        letter-spacing: -0.01em;
    }

    .expo-card-details p {
        font-size: 13.5px;
        line-height: 1.55;
        color: var(--text-muted);
        margin: 0;
    }

    .gallery-controls { display: flex; align-items: center; gap: 20px; }

    .gallery-nav-btn {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        border: 1px solid rgba(15, 107, 75, 0.15);
        background: var(--bg-main);
        color: var(--brand-dark);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        transition: all 0.3s ease;
        box-shadow: 0 4px 12px rgba(0,0,0,0.02);
    }

    .gallery-nav-btn:hover {
        background: var(--brand-primary);
        border-color: var(--brand-primary);
        color: #ffffff;
    }

    .gallery-fraction-indicator {
        font-size: 14px;
        font-weight: 700;
        color: var(--brand-dark);
        letter-spacing: 0.05em;
    }

    .gallery-fraction-indicator .sep {
        color: rgba(15, 107, 75, 0.3);
        margin: 0 4px;
    }

    .gallery-fraction-indicator .curr-idx { color: var(--brand-primary); }

    @media (max-width: 992px) {
        .appearance-shell { grid-template-columns: 1fr; gap: 64px; }
        .appearance-left, .appearance-right { max-width: 620px; margin: 0 auto; width: 100%; }
        .appearance-title, .section-badge { text-align: center; display: flex; justify-content: center; }
        .appearance-description { text-align: center; margin-left: auto; margin-right: auto; }
    }

    @media (max-width: 640px) {
        .appearance-section { padding-left: 16px; padding-right: 16px; }
        .exhibition-portfolio-container { padding: 24px 16px; }
        .exhibition-gallery-stack { aspect-ratio: 1 / 1.25; }
    }