.efficiency {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl) var(--container-padding);
    background:
        linear-gradient(180deg,
            rgba(10, 15, 26, 0.55) 0%,
            rgba(15, 30, 50, 0.70) 100%),
        url('/stock_images/dashboard.jpeg') center / cover no-repeat;
    border-top: 1px solid var(--color-border);
    overflow: hidden;
}

.efficiency::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(rgba(0, 180, 216, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.efficiency .container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.efficiency__header {
    text-align: center;
    margin-bottom: var(--space-lg);
    margin-top: -20px;
}

.efficiency__tag {
    display: inline-block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    padding: var(--space-xs) var(--space-lg);
    border: 1px solid rgba(0, 180, 216, 0.25);
    border-radius: var(--radius-full);
    background: rgba(0, 180, 216, 0.06);
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.1s;
}

.efficiency__heading {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    margin: 0 0 var(--space-md);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

.efficiency__subheading {
    font-size: clamp(1rem, 2vw, 1.1rem);
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.3s;
}

.efficiency__comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--space-xl);
    align-items: center;
    margin-bottom: var(--space-3xl);
    padding: var(--space-xl);
    border-radius: calc(var(--radius-xl) + 4px);
    background: rgba(8, 14, 24, 0.32);
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 18px 42px rgba(2, 6, 23, 0.18);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.4s;
}

.efficiency__card {
    padding: var(--space-lg) var(--space-lg);
    background: rgba(15, 23, 42, 0.82);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 12px 32px rgba(2, 6, 23, 0.24);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.efficiency__card:hover {
    border-color: rgba(148, 163, 184, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.efficiency__card:focus-visible {
    outline: none;
    border-color: rgba(72, 202, 228, 0.45);
    box-shadow: 0 0 0 3px rgba(72, 202, 228, 0.16), 0 12px 32px rgba(2, 6, 23, 0.28);
}

.efficiency__card--accent {
    border-color: rgba(0, 180, 216, 0.2);
    background: linear-gradient(180deg, rgba(6, 182, 212, 0.16), rgba(15, 23, 42, 0.88));
}

.efficiency__card--accent:hover {
    border-color: rgba(0, 180, 216, 0.35);
    box-shadow: 0 8px 32px rgba(0, 180, 216, 0.1);
}

.efficiency__card--accent:focus-visible {
    border-color: rgba(0, 180, 216, 0.45);
    box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.18), 0 12px 34px rgba(0, 180, 216, 0.12);
}

.efficiency__card-header {
    margin-bottom: var(--space-md);
}

.efficiency__card-tag {
    font-size: var(--fs-xs);
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.efficiency__card-tag--accent {
    color: var(--color-accent);
}

.efficiency__ring-wrap {
    position: relative;
    width: 160px;
    height: 160px;
    margin-bottom: var(--space-md);
}

.efficiency__ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.efficiency__ring-bg {
    fill: none;
    stroke: rgba(148, 163, 184, 0.08);
    stroke-width: 10;
}

.efficiency__ring-fill {
    fill: none;
    stroke-width: 10;
    stroke-linecap: round;
}

.efficiency__ring-fill--trad {
    stroke: rgba(100, 150, 200, 0.6);
}

.efficiency__ring-fill--ins {
    stroke: var(--color-accent);
    filter: drop-shadow(0 0 6px var(--color-accent-glow));
}

.efficiency__ring-label {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
}

.efficiency__ring-value {
    font-family: var(--font-heading);
    font-size: 2.0rem;
    font-weight: var(--fw-bold);
    color: var(--color-text-primary);
    line-height: 1;
}

.efficiency__ring-value--accent {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.efficiency__ring-caption {
    font-size: 0.6rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.efficiency__breakdown {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.efficiency__breakdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
}

.efficiency__breakdown-item span:nth-child(2) {
    flex: 1;
}

.efficiency__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.efficiency__dot--eng {
    background: rgba(100, 150, 200, 0.7);
}

.efficiency__dot--ins {
    background: var(--color-accent);
    box-shadow: 0 0 6px var(--color-accent-glow);
}

.efficiency__dot--overhead {
    background: rgba(148, 163, 184, 0.25);
}

.efficiency__breakdown-val {
    font-weight: 700;
    color: rgba(255, 255, 255, 0.85);
    font-variant-numeric: tabular-nums;
}

.efficiency__breakdown-val--accent {
    color: var(--color-accent-light);
}

.efficiency__total {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.efficiency__total-val {
    font-weight: var(--fw-bold);
    font-size: var(--fs-base);
    color: var(--color-text-primary);
    font-variant-numeric: tabular-nums;
}

.efficiency__total-val--accent {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.efficiency__center {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl) 0;
}

.efficiency__badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(230, 126, 34, 0.18);
    border: 1px solid rgba(230, 126, 34, 0.3);
    animation: badgePulse 3s ease-in-out infinite;
}

.efficiency__badge-value {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: #f39c12;
    line-height: 1;
}

.efficiency__badge-label {
    font-size: var(--fs-xs);
    color: rgba(243, 156, 18, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 2px;
}

.efficiency__connector {
    opacity: 0.5;
}

@keyframes badgePulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(230, 126, 34, 0.15);
    }

    50% {
        box-shadow: 0 0 20px 4px rgba(230, 126, 34, 0.15);
    }
}

.efficiency__footer {
    font-size: var(--fs-base);
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
    text-align: center;
    margin: 0;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
    line-height: 1.6;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.efficiency__footer-icon {
    font-size: var(--fs-lg);
    filter: saturate(1.3);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    .efficiency__comparison {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .efficiency__center {
        flex-direction: row;
        padding: 0;
        gap: var(--space-md);
    }

    .efficiency__connector {
        display: none;
    }
}

@media (max-width: 768px) {
    .efficiency {
        height: auto;
        min-height: 0;
        padding: var(--space-3xl) var(--container-padding);
    }

    .efficiency__header {
        margin-bottom: var(--space-2xl);
        margin-top: 0;
    }

    .efficiency__comparison {
        gap: var(--space-2xl);
        margin-bottom: var(--space-2xl);
    }

    .efficiency__card {
        padding: var(--space-xl) var(--space-lg);
    }

    .efficiency__center {
        justify-content: center;
        gap: var(--space-lg);
        margin: calc(var(--space-sm) * -1) 0;
    }

    .efficiency__ring-wrap {
        width: 140px;
        height: 140px;
    }

    .efficiency__ring-value {
        font-size: var(--fs-2xl);
    }

    .efficiency__badge {
        width: 70px;
        height: 70px;
    }
}

@media (max-width: 480px) {
    .efficiency {
        padding: var(--space-3xl) var(--container-padding);
    }

    .efficiency__heading {
        font-size: 1.55rem;
        line-height: 1.35;
        max-width: 320px;
    }

    .efficiency__subheading {
        font-size: 0.95rem;
    }

    .efficiency__header {
        margin-bottom: var(--space-xl);
    }

    .efficiency__comparison {
        gap: var(--space-xl);
        margin-bottom: var(--space-xl);
    }

    .efficiency__card {
        padding: var(--space-lg) var(--space-md);
        max-width: 320px;
        width: 100%;
        margin: 0 auto;
    }

    .efficiency__ring-wrap {
        width: 120px;
        height: 120px;
    }

    .efficiency__ring-value {
        font-size: var(--fs-xl);
    }

    .efficiency__badge {
        width: 68px;
        height: 68px;
    }

    .efficiency__badge-value {
        font-size: var(--fs-base);
    }

    .efficiency__center {
        gap: var(--space-md);
        margin: 0;
    }

    .efficiency__breakdown {
        gap: 0.75rem;
        margin-bottom: var(--space-md);
    }

    .efficiency__breakdown-item,
    .efficiency__total {
        font-size: 0.92rem;
    }

    .efficiency__footer {
        max-width: 320px;
        margin: 0 auto;
        font-size: 0.95rem;
        line-height: 1.5;
    }
}