.qtool-plaster-area-by-cement-bag,
    .qtool-plaster-area-by-cement-bag * {
        box-sizing: border-box;
    }

    .qtool-plaster-area-by-cement-bag {
        --qtool-navy: #0b1f3a;
        --qtool-blue: #265f91;
        --qtool-orange: #f28c28;
        --qtool-bg: #f7f9fb;
        --qtool-card: #ffffff;
        --qtool-border: #d9e2ec;
        --qtool-muted: #5f6f80;
        --qtool-soft: #eef4f8;

        width: 100%;
        margin: 0;
        color: var(--qtool-navy);
        font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    .qtool-plaster-area-by-cement-bag__shell {
        position: relative;
        overflow: hidden;
        padding: 28px;
        border: 1px solid var(--qtool-border);
        border-radius: 24px;
        background:
            linear-gradient(135deg, rgba(38, 95, 145, 0.08), rgba(242, 140, 40, 0.06)),
            linear-gradient(0deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.92));
        box-shadow: 0 18px 50px rgba(11, 31, 58, 0.08);
    }

    .qtool-plaster-area-by-cement-bag__shell::before {
        content: "";
        position: absolute;
        inset: 0;
        pointer-events: none;
        background-image:
            linear-gradient(rgba(38, 95, 145, 0.07) 1px, transparent 1px),
            linear-gradient(90deg, rgba(38, 95, 145, 0.07) 1px, transparent 1px);
        background-size: 28px 28px;
        opacity: 0.55;
    }

    .qtool-plaster-area-by-cement-bag__header,
    .qtool-plaster-area-by-cement-bag__grid,
    .qtool-plaster-area-by-cement-bag__formula {
        position: relative;
        z-index: 1;
    }

    .qtool-plaster-area-by-cement-bag__header {
        max-width: 850px;
        margin-bottom: 22px;
    }

    .qtool-plaster-area-by-cement-bag__label {
        margin: 0 0 8px;
        color: var(--qtool-orange);
        font-size: 0.8rem;
        font-weight: 800;
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    .qtool-plaster-area-by-cement-bag__header h2 {
        margin: 0;
        color: var(--qtool-navy);
        font-size: clamp(1.55rem, 3vw, 2.3rem);
        line-height: 1.12;
    }

    .qtool-plaster-area-by-cement-bag__header p {
        margin: 12px 0 0;
        color: var(--qtool-muted);
        font-size: 1rem;
        line-height: 1.7;
    }

    .qtool-plaster-area-by-cement-bag__grid {
        display: grid;
        grid-template-columns: minmax(280px, 0.92fr) minmax(300px, 1.08fr);
        gap: 18px;
        align-items: stretch;
    }

    .qtool-plaster-area-by-cement-bag__panel {
        border: 1px solid rgba(217, 226, 236, 0.95);
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.92);
        box-shadow: 0 12px 30px rgba(11, 31, 58, 0.06);
    }

    .qtool-plaster-area-by-cement-bag__form {
        display: grid;
        gap: 16px;
        padding: 20px;
    }

    .qtool-plaster-area-by-cement-bag__field {
        display: grid;
        gap: 7px;
    }

    .qtool-plaster-area-by-cement-bag__field label {
        color: var(--qtool-navy);
        font-size: 0.9rem;
        font-weight: 750;
    }

    .qtool-plaster-area-by-cement-bag__field input,
    .qtool-plaster-area-by-cement-bag__field select {
        width: 100%;
        min-height: 44px;
        padding: 10px 12px;
        border: 1px solid var(--qtool-border);
        border-radius: 12px;
        background: #fff;
        color: var(--qtool-navy);
        font: inherit;
        outline: none;
    }

    .qtool-plaster-area-by-cement-bag__field input:focus,
    .qtool-plaster-area-by-cement-bag__field select:focus {
        border-color: var(--qtool-blue);
        box-shadow: 0 0 0 3px rgba(38, 95, 145, 0.13);
    }

    .qtool-plaster-area-by-cement-bag__input-unit {
        display: grid;
        grid-template-columns: 1fr auto;
        align-items: center;
        gap: 8px;
    }

    .qtool-plaster-area-by-cement-bag__input-unit span {
        min-width: 58px;
        padding: 11px 10px;
        border: 1px solid var(--qtool-border);
        border-radius: 12px;
        background: var(--qtool-soft);
        color: var(--qtool-muted);
        font-size: 0.88rem;
        font-weight: 700;
        text-align: center;
    }

    .qtool-plaster-area-by-cement-bag__advanced {
        border-top: 1px dashed var(--qtool-border);
        padding-top: 12px;
    }

    .qtool-plaster-area-by-cement-bag__advanced summary {
        cursor: pointer;
        color: var(--qtool-blue);
        font-size: 0.92rem;
        font-weight: 800;
    }

    .qtool-plaster-area-by-cement-bag__advanced .qtool-plaster-area-by-cement-bag__field {
        margin-top: 14px;
    }

    .qtool-plaster-area-by-cement-bag__results {
        display: grid;
        gap: 16px;
        padding: 20px;
    }

    .qtool-plaster-area-by-cement-bag__result-main {
        padding: 22px;
        border-radius: 18px;
        background:
            linear-gradient(135deg, rgba(11, 31, 58, 0.96), rgba(38, 95, 145, 0.94));
        color: #fff;
    }

    .qtool-plaster-area-by-cement-bag__result-main span {
        display: block;
        margin-bottom: 6px;
        font-size: 0.9rem;
        font-weight: 700;
        opacity: 0.85;
    }

    .qtool-plaster-area-by-cement-bag__result-main strong {
        display: block;
        font-size: clamp(2.4rem, 6vw, 4.4rem);
        line-height: 1;
        letter-spacing: -0.04em;
    }

    .qtool-plaster-area-by-cement-bag__result-main em {
        display: block;
        margin-top: 6px;
        color: rgba(255, 255, 255, 0.82);
        font-style: normal;
        font-weight: 700;
    }

    .qtool-plaster-area-by-cement-bag__result-list {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
    }

    .qtool-plaster-area-by-cement-bag__result-list div {
        padding: 14px;
        border: 1px solid var(--qtool-border);
        border-radius: 14px;
        background: #fbfdff;
    }

    .qtool-plaster-area-by-cement-bag__result-list span {
        display: block;
        margin-bottom: 5px;
        color: var(--qtool-muted);
        font-size: 0.78rem;
        font-weight: 750;
    }

    .qtool-plaster-area-by-cement-bag__result-list strong {
        color: var(--qtool-navy);
        font-size: 1rem;
    }

    .qtool-plaster-area-by-cement-bag__note {
        display: grid;
        gap: 4px;
        padding: 14px;
        border-left: 4px solid var(--qtool-orange);
        border-radius: 14px;
        background: rgba(242, 140, 40, 0.08);
        color: var(--qtool-muted);
        font-size: 0.9rem;
        line-height: 1.55;
    }

    .qtool-plaster-area-by-cement-bag__note strong {
        color: var(--qtool-navy);
    }

    .qtool-plaster-area-by-cement-bag__formula {
        margin-top: 18px;
        padding: 18px 20px;
        border: 1px solid var(--qtool-border);
        border-radius: 18px;
        background: rgba(255, 255, 255, 0.86);
    }

    .qtool-plaster-area-by-cement-bag__formula h3 {
        margin: 0 0 8px;
        color: var(--qtool-navy);
        font-size: 1.05rem;
    }

    .qtool-plaster-area-by-cement-bag__formula p {
        margin: 0;
        color: var(--qtool-muted);
        font-size: 0.94rem;
        line-height: 1.65;
    }

    .qtool-plaster-area-by-cement-bag__gate {
        padding: 22px;
        border: 1px solid var(--qtool-border);
        border-radius: 16px;
        background: #fff;
    }

    @media (max-width: 820px) {
        .qtool-plaster-area-by-cement-bag__shell {
            padding: 20px;
            border-radius: 20px;
        }

        .qtool-plaster-area-by-cement-bag__grid {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 520px) {
        .qtool-plaster-area-by-cement-bag__shell {
            padding: 16px;
        }

        .qtool-plaster-area-by-cement-bag__result-list {
            grid-template-columns: 1fr;
        }

        .qtool-plaster-area-by-cement-bag__form,
        .qtool-plaster-area-by-cement-bag__results {
            padding: 16px;
        }
    }