.mb-pagetop {
    padding: 30px 0 34px;
}

.mb-pagetop .pagetop__crumbs {
    margin-bottom: 9px;
}

.mb-pagetop .pagetop__eyebrow {
    margin-bottom: 10px;
}

.mb-pagetop h1 {
    max-width: none;
    margin-bottom: 8px;
    font-size: clamp(32px, 3.3vw, 42px);
}

.mb-pagetop .pagetop__lead {
    max-width: 880px;
    font-size: 15px;
    line-height: 1.5;
}

.mb-configurator {
    background: var(--c-bg);
}

.mb-configurator__workspace {
    position: relative;
    padding: 40px 0 80px;
    overflow: clip;
}

.mb-configurator__workspace::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 320px;
    pointer-events: none;
    background: linear-gradient(180deg, var(--c-bg-warm), transparent);
}

.mb-configurator__inner {
    position: relative;
    z-index: 1;
}

.mb-studio {
    overflow: clip;
    overflow-anchor: none;
    border: 1px solid var(--c-line);
    border-radius: var(--r-lg);
    background: var(--c-surface);
    box-shadow: var(--shadow-lg);
}

.mb-studio__topbar {
    position: sticky;
    z-index: 20;
    top: 80px;
    min-height: 68px;
    padding: 12px 18px;
    display: grid;
    grid-template-columns: minmax(250px, auto) minmax(180px, 1fr) auto;
    align-items: center;
    gap: 20px;
    border-bottom: 1px solid var(--c-line);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
}

.mb-studio__step {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 13px;
}

.mb-studio__step-index {
    width: 40px;
    height: 40px;
    display: grid;
    flex: 0 0 40px;
    place-items: center;
    border-radius: var(--r-sm);
    background: var(--c-navy);
    color: #fff;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.mb-studio__step-copy {
    min-width: 0;
}

.mb-studio__eyebrow,
.mb-studio__step-title {
    display: block;
}

.mb-studio__eyebrow {
    margin-bottom: 3px;
    color: var(--c-orange);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.mb-studio__step-title {
    overflow: hidden;
    color: var(--c-navy);
    font-size: 15px;
    font-weight: 700;
    line-height: 1.25;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mb-studio__progress {
    width: 100%;
    max-width: 360px;
    justify-self: end;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
}

.mb-studio__progress-track {
    height: 4px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--c-line);
}

.mb-studio__progress-value {
    display: block;
    width: 12.5%;
    height: 100%;
    border-radius: inherit;
    background: var(--c-orange);
    transition: width 220ms ease;
}

.mb-studio__progress-label {
    color: var(--c-text-mute);
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}

.mb-step-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

.mb-step-nav .btn {
    min-width: 0;
    padding: 11px 16px;
    justify-content: center;
    white-space: nowrap;
}

.mb-step-nav [data-mb-step-prev] {
    min-width: 100px;
}

.mb-step-nav [data-mb-step-next] {
    width: 190px;
}

.mb-step-nav .btn[hidden] {
    display: none;
}

.mb-step-nav .btn:disabled {
    cursor: not-allowed;
    opacity: 0.48;
}

.mb-studio__body {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    background: var(--c-surface);
}

.mb-visual {
    position: relative;
    z-index: 1;
    min-width: 0;
    height: clamp(440px, 39vw, 520px);
    order: 1;
    overflow: hidden;
    isolation: isolate;
    background: var(--c-navy-deep);
}

.mb-visual__canvas {
    position: absolute;
    inset: 0;
    z-index: -3;
}

.mb-visual__canvas canvas,
.mb-scene-fallback {
    width: 100%;
    height: 100%;
    display: block;
}

.mb-visual__canvas canvas {
    transition: opacity 180ms ease;
}

.mb-scene-fallback {
    position: absolute;
    inset: 0;
    z-index: 1;
    object-fit: cover;
    object-position: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 180ms ease;
}

.mb-visual__canvas.is-fallback canvas,
.mb-visual__canvas.is-webgl-lost canvas {
    opacity: 0;
}

.mb-visual__canvas.is-fallback .mb-scene-fallback,
.mb-visual__canvas.is-webgl-lost .mb-scene-fallback {
    opacity: 1;
    visibility: visible;
}

.mb-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        linear-gradient(180deg, rgba(8, 26, 45, 0.18), transparent 48%, rgba(8, 26, 45, 0.82)),
        linear-gradient(90deg, rgba(8, 26, 45, 0.16), transparent 55%);
}

.mb-visual__estimate {
    position: absolute;
    z-index: 3;
    top: 24px;
    right: 26px;
    width: 258px;
    padding: 15px 16px 16px;
    pointer-events: auto;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--r-md);
    background: rgba(8, 26, 45, 0.82);
    color: #fff;
}

.mb-visual__estimate::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 16px;
    width: 42px;
    height: 2px;
    background: var(--c-orange);
}

.mb-visual__estimate-head {
    display: flex;
    align-items: center;
    gap: 9px;
    color: rgba(255, 255, 255, 0.68);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.mb-visual__estimate-icon {
    width: 28px;
    height: 28px;
    display: grid;
    flex: 0 0 28px;
    place-items: center;
    border-radius: var(--r-sm);
    background: rgba(255, 87, 52, 0.16);
    color: var(--c-orange);
}

.mb-visual__estimate-body {
    margin-top: 12px;
}

.mb-visual__estimate-total {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
}

.mb-visual__estimate-total > span {
    color: rgba(255, 255, 255, 0.58);
    font-size: 12px;
    font-weight: 700;
}

.mb-visual__estimate-total strong {
    color: #fff;
    font-size: 27px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.035em;
    word-spacing: 0.12em;
    white-space: nowrap;
}

.mb-visual__estimate p {
    margin: 10px 0 0;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.58);
    font-size: 12px;
    line-height: 1.45;
}

.mb-visual__estimate-details {
    margin-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.mb-visual__estimate-details[hidden] {
    display: none;
}

.mb-visual__estimate-details summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-top: 10px;
    color: rgba(255, 255, 255, 0.78);
    cursor: pointer;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.04em;
    list-style: none;
    text-transform: uppercase;
}

.mb-visual__estimate-details summary::-webkit-details-marker {
    display: none;
}

.mb-visual__estimate-details summary i {
    color: var(--c-orange);
    transition: transform 180ms ease;
}

.mb-visual__estimate-details[open] summary i {
    transform: rotate(180deg);
}

.mb-visual__estimate-details ul {
    max-height: 210px;
    margin: 9px 0 0;
    padding: 0 10px 0 0;
    overflow: auto;
    list-style: none;
    scrollbar-color: rgba(255, 87, 52, 0.72) rgba(255, 255, 255, 0.08);
    scrollbar-gutter: stable;
    scrollbar-width: thin;
}

.mb-visual__estimate-details ul::-webkit-scrollbar {
    width: 6px;
}

.mb-visual__estimate-details ul::-webkit-scrollbar-track {
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
}

.mb-visual__estimate-details ul::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: rgba(255, 87, 52, 0.72);
}

.mb-visual__estimate-details ul::-webkit-scrollbar-thumb:hover {
    background: var(--c-orange);
}

.mb-visual__estimate-details li {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    padding: 7px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.68);
    font-size: 12px;
    line-height: 1.3;
}

.mb-visual__estimate-details li strong {
    color: #fff;
    font-size: 12px;
    white-space: nowrap;
}

[data-mb-estimate-state="pending"] .mb-visual__estimate-total strong {
    opacity: 0.72;
}

[data-mb-estimate-state="error"] .mb-visual__estimate-total strong {
    color: rgba(255, 255, 255, 0.62);
}

.mb-visual__bottom {
    position: absolute;
    z-index: 2;
    right: 28px;
    bottom: 24px;
    left: 28px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    pointer-events: none;
}

.mb-visual__copy {
    max-width: 540px;
}

.mb-visual__eyebrow {
    display: block;
    margin-bottom: 7px;
    color: var(--c-orange);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.mb-visual__title {
    margin: 0 0 6px;
    color: #fff;
    font-size: clamp(27px, 3vw, 38px);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.025em;
}

.mb-visual__lead {
    margin: 0;
    max-width: 500px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    line-height: 1.45;
}

.mb-config-panel {
    min-width: 0;
    padding: 32px 36px 36px;
    order: 2;
    border-top: 1px solid var(--c-line);
    background: var(--c-surface);
}

.mb-step-panel {
    display: none;
    min-width: 0;
}

.mb-step-panel.is-active {
    display: grid;
    grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.88fr);
    align-items: start;
    gap: 46px;
}

.mb-step-panel[hidden] {
    display: none;
}

.mb-config-panel__head,
.mb-step-panel__controls {
    min-width: 0;
}

.mb-config-panel__kicker {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 11px;
    color: var(--c-orange);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.mb-config-panel__kicker::before {
    content: "";
    width: 24px;
    height: 2px;
    flex: 0 0 24px;
    background: currentColor;
}

.mb-config-panel__title {
    margin: 0 0 10px;
    color: var(--c-navy);
    font-size: clamp(25px, 2.3vw, 32px);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.025em;
}

.mb-config-panel__lead {
    margin: 0;
    color: var(--c-text-soft);
    font-size: 14px;
    line-height: 1.6;
}

.mb-control-group {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.mb-control-group + .mb-control-group,
.mb-control-group + .mb-config-panel__note,
.mb-control-group + .mb-envelope-summary,
.mb-config-panel__note + .mb-envelope-summary {
    margin-top: 20px;
}

.mb-control-group__label {
    display: block;
    margin-bottom: 10px;
    color: var(--c-text);
    font-size: 12px;
    font-weight: 700;
}

.mb-choice-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.mb-choice,
.mb-segment,
.mb-material-option,
.mb-service-option,
.mb-climate-option {
    position: relative;
    min-width: 0;
    cursor: pointer;
}

.mb-choice__input,
.mb-segment__input,
.mb-material-option__input,
.mb-service-option__input,
.mb-climate-option__input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.mb-choice__surface {
    min-height: 76px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-surface);
    transition: border-color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}

.mb-choice__icon {
    width: 36px;
    height: 36px;
    display: grid;
    flex: 0 0 36px;
    place-items: center;
    border-radius: var(--r-sm);
    background: var(--c-bg-warm);
    color: var(--c-navy);
    font-size: 15px;
}

.mb-choice__text,
.mb-choice__title,
.mb-choice__description {
    display: block;
    min-width: 0;
}

.mb-choice__title {
    color: var(--c-navy);
    font-size: 14px;
    font-weight: 800;
}

.mb-choice__description {
    margin-top: 3px;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.35;
}

.mb-choice__input:checked + .mb-choice__surface,
.mb-material-option__input:checked + .mb-material-option__surface,
.mb-service-option__input:checked + .mb-service-option__surface,
.mb-climate-option__input:checked + .mb-climate-option__surface {
    border-color: var(--c-orange);
    background: var(--c-orange-soft);
    box-shadow: inset 3px 0 0 var(--c-orange);
}

.mb-choice__input:focus-visible + .mb-choice__surface,
.mb-segment__input:focus-visible + .mb-segment__surface,
.mb-material-option__input:focus-visible + .mb-material-option__surface,
.mb-service-option__input:focus-visible + .mb-service-option__surface,
.mb-climate-option__input:focus-visible + .mb-climate-option__surface {
    outline: 3px solid rgba(255, 87, 52, 0.2);
    outline-offset: 2px;
}

.mb-choice__input:checked + .mb-choice__surface .mb-choice__icon,
.mb-material-option__input:checked + .mb-material-option__surface > i,
.mb-service-option__input:checked + .mb-service-option__surface .mb-service-option__icon {
    background: var(--c-orange);
    color: #fff;
}

.mb-segments {
    padding: 4px;
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(0, 1fr);
    align-items: stretch;
    gap: 3px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-bg-warm);
}

.mb-segment__surface {
    min-height: 40px;
    padding: 8px 10px;
    display: grid;
    place-items: center;
    border-radius: var(--r-sm);
    color: var(--c-text-soft);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    transition: color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}

.mb-segment__input:checked + .mb-segment__surface {
    background: var(--c-surface);
    color: var(--c-navy);
    box-shadow: var(--shadow-sm);
}

.mb-segment.is-disabled,
.mb-material-option:has(.mb-material-option__input:disabled) {
    cursor: not-allowed;
}

.mb-segment__input:disabled + .mb-segment__surface,
.mb-material-option__input:disabled + .mb-material-option__surface {
    opacity: 0.42;
    box-shadow: none;
}

.mb-config-panel__note,
.mb-pending-note {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.45;
}

.mb-config-panel__note {
    margin-bottom: 0;
}

.mb-config-panel__note i {
    margin-top: 2px;
    color: var(--c-orange);
}

.mb-pending-note {
    margin: 12px 0 0;
    padding: 10px 12px;
    border-radius: var(--r-sm);
    background: var(--c-bg-warm);
}

.mb-rule-message[hidden],
.mb-pending-note[hidden],
.mb-floor-slab-thickness[hidden],
.mb-opening-fields[hidden] {
    display: none;
}

.mb-dimension-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.mb-dimension-grid--secondary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 10px;
}

.mb-number-control {
    display: block;
    min-width: 0;
    padding: 12px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-bg-alt);
}

.mb-number-control__label,
.mb-number-control__hint {
    display: block;
}

.mb-number-control__label {
    min-height: 28px;
    margin-bottom: 7px;
    color: var(--c-text);
    font-size: 12px;
    font-weight: 800;
    line-height: 1.35;
}

.mb-number-control__field {
    min-height: 39px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--c-line-2);
    border-radius: var(--r-sm);
    background: var(--c-surface);
    color: var(--c-text-mute);
    font-size: 12px;
    font-weight: 700;
}

.mb-number-control__field:focus-within {
    border-color: var(--c-orange);
    box-shadow: 0 0 0 3px rgba(255, 87, 52, 0.14);
}

.mb-number-control__field input,
.mb-number-control__field select {
    width: 100%;
    min-width: 0;
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--c-navy);
    font: inherit;
    font-size: 14px;
    font-weight: 800;
}

.mb-number-control__field select {
    appearance: none;
}

.mb-number-control__hint {
    margin-top: 6px;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.35;
}

.mb-config-panel__summary {
    margin-top: 16px;
    border-top: 1px solid var(--c-line);
    border-bottom: 1px solid var(--c-line);
}

.mb-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.mb-metric {
    min-width: 0;
    padding: 13px 10px;
    text-align: center;
}

.mb-metric + .mb-metric {
    border-left: 1px solid var(--c-line);
}

.mb-metric__value,
.mb-metric__label {
    display: block;
}

.mb-metric__value {
    color: var(--c-navy);
    font-size: 16px;
    font-weight: 800;
}

.mb-metric__label {
    margin-top: 4px;
    color: var(--c-text-mute);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.mb-climate-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
}

.mb-climate-option__surface {
    min-height: 66px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-surface);
}

.mb-climate-option__surface strong,
.mb-climate-option__surface small {
    display: block;
}

.mb-climate-option__surface strong {
    color: var(--c-navy);
    font-size: 12px;
}

.mb-climate-option__surface small {
    margin-top: 4px;
    color: var(--c-text-mute);
    font-size: 12px;
}

.mb-climate-summary,
.mb-envelope-summary {
    margin-top: 16px;
    padding: 13px 14px;
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    align-items: center;
    gap: 11px;
    border-radius: var(--r-md);
    background: var(--c-navy);
    color: #fff;
}

.mb-climate-summary__icon,
.mb-envelope-summary__icon {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: var(--r-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--c-orange);
}

.mb-climate-summary strong,
.mb-climate-summary small,
.mb-envelope-summary strong,
.mb-envelope-summary small {
    display: block;
}

.mb-climate-summary strong,
.mb-envelope-summary strong {
    font-size: 12px;
    line-height: 1.35;
}

.mb-climate-summary small,
.mb-envelope-summary small {
    margin-top: 3px;
    color: rgba(255, 255, 255, 0.62);
    font-size: 12px;
    line-height: 1.4;
}

.mb-material-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
}

.mb-material-option__surface {
    min-height: 70px;
    padding: 11px 12px;
    display: grid;
    grid-template-columns: 31px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-surface);
}

.mb-material-option__surface > i {
    width: 31px;
    height: 31px;
    display: grid;
    place-items: center;
    border-radius: var(--r-sm);
    background: var(--c-bg-warm);
    color: var(--c-navy);
}

.mb-material-option__surface strong,
.mb-material-option__surface small {
    display: block;
}

.mb-material-option__surface strong {
    color: var(--c-navy);
    font-size: 12px;
    line-height: 1.25;
}

.mb-material-option__surface small {
    margin-top: 3px;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.3;
}

.mb-service-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.mb-service-list--envelope .mb-service-option:last-child {
    grid-column: 1 / -1;
}

.mb-linear-services {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 10px;
}

.mb-linear-service {
    min-width: 0;
    padding: 4px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-bg-warm);
}

.mb-linear-service > .mb-service-option {
    display: block;
}

.mb-linear-service__fields {
    padding: 8px 4px 4px;
}

.mb-linear-service__fields[hidden] {
    display: none;
}

.mb-service-option__surface {
    min-height: 78px;
    padding: 12px;
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr) 20px;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-surface);
}

.mb-service-option__icon {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: var(--r-sm);
    background: var(--c-bg-warm);
    color: var(--c-navy);
}

.mb-service-option__surface strong,
.mb-service-option__surface small {
    display: block;
}

.mb-service-option__surface strong {
    color: var(--c-navy);
    font-size: 12px;
    line-height: 1.3;
}

.mb-service-option__surface small {
    margin-top: 3px;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.35;
}

.mb-service-option__mark {
    width: 18px;
    height: 18px;
    display: grid;
    place-items: center;
    border: 1px solid var(--c-line-2);
    border-radius: 50%;
    color: transparent;
    font-size: 12px;
}

.mb-service-option__input:checked + .mb-service-option__surface .mb-service-option__mark {
    border-color: var(--c-orange);
    background: var(--c-orange);
    color: #fff;
}

.mb-service-option__input:disabled + .mb-service-option__surface {
    cursor: not-allowed;
    opacity: 0.44;
}

.mb-openings-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 10px;
}

.mb-opening-item {
    min-width: 0;
    padding: 4px;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-bg-warm);
}

.mb-opening-item__header {
    position: relative;
}

.mb-opening-item__header .mb-service-option {
    display: block;
}

.mb-opening-item__header .mb-service-option__surface {
    min-height: 82px;
    padding-right: 38px;
    grid-template-columns: 32px minmax(0, 1fr);
}

.mb-opening-item__header .mb-service-option__mark {
    display: none;
}

.mb-opening-disclosure {
    position: absolute;
    z-index: 2;
    top: 50%;
    right: 9px;
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 50%;
    background: var(--c-navy);
    color: #fff;
    cursor: pointer;
    transform: translateY(-50%);
}

.mb-opening-disclosure:disabled {
    cursor: not-allowed;
    opacity: 0.25;
}

.mb-opening-disclosure i {
    font-size: 12px;
    transition: transform 180ms ease;
}

.mb-opening-disclosure[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.mb-opening-fields {
    padding: 8px 4px 4px;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
}

.mb-opening-fields--single {
    grid-template-columns: minmax(0, 1fr);
}

.mb-studio__summary {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--c-navy);
    color: #fff;
}

.mb-studio__summary-toggle {
    min-height: 58px;
    padding: 11px 18px;
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr) 20px;
    align-items: center;
    gap: 11px;
    cursor: pointer;
    list-style: none;
}

.mb-studio__summary-toggle::-webkit-details-marker {
    display: none;
}

.mb-studio__summary-toggle strong,
.mb-studio__summary-toggle small {
    display: block;
}

.mb-studio__summary-toggle strong {
    font-size: 12px;
}

.mb-studio__summary-toggle small {
    margin-top: 2px;
    color: rgba(255, 255, 255, 0.56);
    font-size: 12px;
}

.mb-studio__summary-icon {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: var(--r-sm);
    background: rgba(255, 255, 255, 0.08);
    color: var(--c-orange);
}

.mb-studio__summary-toggle > i {
    color: rgba(255, 255, 255, 0.68);
    transition: transform 180ms ease;
}

.mb-studio__summary[open] .mb-studio__summary-toggle > i {
    transform: rotate(180deg);
}

.mb-studio__statusbar {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mb-status {
    min-width: 0;
    min-height: 68px;
    padding: 13px 16px;
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
}

.mb-status:nth-child(4n + 2),
.mb-status:nth-child(4n + 3),
.mb-status:nth-child(4n + 4) {
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.mb-status:nth-child(n + 5) {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mb-status__icon {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: var(--r-sm);
    background: rgba(255, 255, 255, 0.09);
    color: var(--c-orange);
    font-size: 12px;
}

.mb-status__label,
.mb-status__value {
    display: block;
}

.mb-status__label {
    margin-bottom: 2px;
    color: rgba(255, 255, 255, 0.52);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.mb-status__value {
    overflow: hidden;
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mb-status.is-unreached {
    opacity: 0.42;
}

.mb-final-calculation,
.mb-proposal-card,
.mb-request-form,
.mb-request-success {
    min-width: 0;
    border: 1px solid var(--c-line);
    border-radius: var(--r-md);
    background: var(--c-bg-alt);
}

.mb-final-calculation {
    padding: 18px;
}

.mb-final-calculation__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--c-line);
}

.mb-final-calculation__head > span {
    color: var(--c-text-mute);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.mb-final-calculation__head > span i {
    margin-right: 6px;
    color: var(--c-orange);
}

.mb-final-calculation__head strong {
    color: var(--c-navy);
    font-size: clamp(25px, 3vw, 34px);
    line-height: 1;
    white-space: nowrap;
}

.mb-final-calculation > p {
    margin: 12px 0 0;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.5;
}

.mb-final-facts {
    margin: 16px 0 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.mb-final-facts > div {
    min-width: 0;
    padding: 10px;
    border-radius: var(--r-sm);
    background: var(--c-surface);
}

.mb-final-facts dt,
.mb-final-facts dd {
    margin: 0;
}

.mb-final-facts dt {
    margin-bottom: 3px;
    color: var(--c-text-mute);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.mb-final-facts dd {
    overflow: hidden;
    color: var(--c-navy);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.35;
    text-overflow: ellipsis;
}

.mb-final-lines {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--c-line);
}

.mb-final-lines[hidden] {
    display: none;
}

.mb-final-lines summary {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--c-navy);
    cursor: pointer;
    list-style: none;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.mb-final-lines summary::-webkit-details-marker {
    display: none;
}

.mb-final-lines summary i {
    margin-left: auto;
    color: var(--c-orange);
    transition: transform 160ms ease;
}

.mb-final-lines[open] summary i {
    transform: rotate(180deg);
}

.mb-final-lines ul {
    margin: 10px 0 0;
    padding: 0;
    list-style: none;
}

.mb-final-lines li {
    padding: 7px 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 14px;
    border-top: 1px solid var(--c-line);
    color: var(--c-text-soft);
    font-size: 12px;
    line-height: 1.35;
}

.mb-final-lines li strong {
    color: var(--c-navy);
    white-space: nowrap;
}

.mb-proposal-card {
    position: relative;
    margin-top: 14px;
    overflow: hidden;
    border-color: rgba(23, 78, 122, 0.24);
    background: var(--c-surface);
}

.mb-proposal-card::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 84px;
    height: 3px;
    background: var(--c-orange);
}

.mb-proposal-card__head {
    min-height: 64px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--c-line);
}

.mb-proposal-card__head h3 {
    margin: 0;
    color: var(--c-navy);
    font-size: 17px;
    line-height: 1.25;
}

.mb-proposal-card__head .btn {
    min-width: 154px;
    justify-content: center;
    white-space: nowrap;
}

.mb-proposal-card__frame {
    height: clamp(580px, 76vh, 820px);
    padding: 12px 2px 12px 12px;
    overflow: auto;
    background: #dfe5ea;
    scrollbar-color: var(--c-navy-2) transparent;
    scrollbar-gutter: stable;
    scrollbar-width: thin;
}

.mb-proposal-card__frame::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

.mb-proposal-card__frame::-webkit-scrollbar-track {
    border-radius: 999px;
    background: transparent;
}

.mb-proposal-card__frame::-webkit-scrollbar-thumb {
    border: 2px solid transparent;
    border-radius: 999px;
    background: var(--c-navy-2);
    background-clip: padding-box;
}

.mb-proposal-card__frame::-webkit-scrollbar-button {
    display: none;
    width: 0;
    height: 0;
}

.mb-proposal-card__frame::-webkit-scrollbar-corner {
    background: transparent;
}

.mb-proposal-card__frame::-webkit-scrollbar-thumb:hover {
    background: var(--c-navy);
}

.mb-proposal-card__pages {
    min-height: 100%;
    display: grid;
    align-content: start;
    justify-items: center;
    gap: 14px;
}

.mb-proposal-card__page {
    position: relative;
    width: min(100%, 794px);
    line-height: 0;
    background: #fff;
    box-shadow: 0 7px 24px rgba(20, 39, 56, 0.18);
}

.mb-proposal-card__page canvas {
    width: 100%;
    height: auto;
    display: block;
}

.mb-proposal-card__message {
    align-self: center;
    margin: 0;
    padding: 16px 18px;
    border-radius: var(--r-sm);
    background: #fff;
    color: var(--c-navy);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.4;
    box-shadow: 0 7px 24px rgba(20, 39, 56, 0.12);
}

.mb-proposal-card__message i {
    margin-right: 6px;
    color: var(--c-orange);
}

.mb-proposal-card__message.is-error {
    color: #a82920;
}

.mb-request-form {
    margin-top: 14px;
    padding: 18px;
}

.mb-request-form__head {
    display: flex;
    align-items: center;
    gap: 11px;
    margin-bottom: 16px;
}

.mb-request-form__head > span:last-child,
.mb-request-form__head strong,
.mb-request-form__head small {
    display: block;
}

.mb-request-form__head strong {
    color: var(--c-navy);
    font-size: 14px;
}

.mb-request-form__head small {
    margin-top: 2px;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.4;
}

.mb-request-form__icon,
.mb-request-success__icon {
    width: 38px;
    height: 38px;
    display: grid;
    flex: 0 0 38px;
    place-items: center;
    border-radius: var(--r-sm);
    background: var(--c-orange);
    color: #fff;
}

.mb-request-form__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.mb-request-field {
    min-width: 0;
}

.mb-request-field--wide {
    grid-column: 1 / -1;
}

.mb-request-field > span {
    display: block;
    margin-bottom: 6px;
    color: var(--c-text);
    font-size: 12px;
    font-weight: 700;
}

.mb-request-field input,
.mb-request-field textarea {
    width: 100%;
    min-width: 0;
    padding: 11px 12px;
    border: 1px solid var(--c-line-2);
    border-radius: var(--r-sm);
    outline: 0;
    background: var(--c-surface);
    color: var(--c-navy);
    font: inherit;
    font-size: 12px;
    line-height: 1.35;
    resize: vertical;
}

.mb-request-field input:focus,
.mb-request-field textarea:focus {
    border-color: var(--c-orange);
    box-shadow: 0 0 0 3px rgba(255, 87, 52, 0.14);
}

.mb-request-field input.is-invalid,
.mb-request-field textarea.is-invalid,
.mb-request-consent input.is-invalid {
    outline: 2px solid #c8372d;
    outline-offset: 2px;
}

.mb-request-consent {
    margin-top: 13px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.45;
}

.mb-request-consent input {
    margin-top: 1px;
    accent-color: var(--c-orange);
}

.mb-request-honeypot {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.mb-request-form__actions {
    margin-top: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.mb-request-form__actions .btn {
    flex: 0 0 auto;
}

.mb-request-form__status {
    margin: 0;
    color: var(--c-text-mute);
    font-size: 12px;
    line-height: 1.4;
}

.mb-request-form__status.is-error {
    color: #a82920;
}

.mb-request-success {
    margin-top: 14px;
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 13px;
    border-color: rgba(49, 143, 92, 0.32);
    background: rgba(49, 143, 92, 0.08);
}

.mb-request-success[hidden] {
    display: none;
}

.mb-request-success__icon {
    background: #318f5c;
}

.mb-request-success strong,
.mb-request-success p,
.mb-request-success small {
    display: block;
}

.mb-request-success strong {
    color: var(--c-navy);
    font-size: 14px;
}

.mb-request-success p {
    margin: 4px 0;
    color: var(--c-text-soft);
    font-size: 12px;
    line-height: 1.45;
}

.mb-request-success small {
    color: var(--c-text-mute);
    font-size: 12px;
}

.mb-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 960px) {
    .mb-studio__topbar {
        top: 68px;
        grid-template-columns: minmax(220px, 1fr) auto;
        gap: 12px;
    }

    .mb-studio__progress {
        max-width: none;
        grid-column: 1 / -1;
        grid-row: 2;
    }

    .mb-visual {
        height: 430px;
    }

    .mb-step-panel.is-active {
        grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.5fr);
        gap: 28px;
    }

    .mb-material-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mb-openings-list {
        grid-template-columns: minmax(0, 1fr);
    }

    .mb-studio__statusbar {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mb-status:nth-child(n) {
        border-left: 0;
        border-top: 0;
    }

    .mb-status:nth-child(even) {
        border-left: 1px solid rgba(255, 255, 255, 0.1);
    }

    .mb-status:nth-child(n + 3) {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
}

@media (max-width: 700px) {
    .mb-pagetop {
        padding: 26px 0 30px;
    }

    .mb-pagetop h1 {
        font-size: clamp(28px, 8vw, 36px);
    }

    .mb-configurator__workspace {
        padding: 28px 0 56px;
    }

    .mb-studio__topbar {
        position: sticky;
        top: 68px;
    }

    .mb-visual {
        height: 380px;
    }

    .mb-visual__estimate {
        top: 16px;
        right: 16px;
        width: 230px;
    }

    .mb-visual__bottom {
        right: 20px;
        bottom: 20px;
        left: 20px;
    }

    .mb-config-panel {
        padding: 28px 24px 30px;
    }

    .mb-step-panel.is-active {
        grid-template-columns: minmax(0, 1fr);
        gap: 26px;
    }

    .mb-final-facts {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mb-choice-grid,
    .mb-service-list,
    .mb-linear-services {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 520px) {
    .mb-pagetop .pagetop__eyebrow,
    .mb-pagetop .pagetop__lead {
        display: none;
    }

    .mb-studio__topbar {
        padding: 14px;
        grid-template-columns: minmax(0, 1fr);
    }

    .mb-studio__progress,
    .mb-step-nav {
        width: 100%;
        grid-column: 1;
    }

    .mb-studio__progress {
        grid-row: 2;
    }

    .mb-step-nav {
        grid-row: 3;
    }

    .mb-step-nav .btn {
        flex: 1 1 0;
        min-width: 0;
        width: auto;
        justify-content: center;
        padding-inline: 10px;
        font-size: 12px;
    }

    .mb-visual {
        height: 330px;
    }

    .mb-visual__estimate {
        top: 12px;
        right: 12px;
        width: 205px;
        padding: 11px 12px 12px;
    }

    .mb-visual__estimate p,
    .mb-visual__estimate-total > span,
    .mb-visual__estimate-details {
        display: none;
    }

    .mb-visual__estimate-body {
        margin-top: 8px;
    }

    .mb-visual__estimate-total strong {
        font-size: 22px;
    }

    .mb-visual__bottom {
        right: 16px;
        bottom: 16px;
        left: 16px;
    }

    .mb-visual__title {
        font-size: 24px;
    }

    .mb-visual__lead {
        font-size: 12px;
    }

    .mb-config-panel {
        padding: 24px 18px 26px;
    }

    .mb-config-panel__title {
        font-size: 25px;
    }

    .mb-choice-grid,
    .mb-material-grid,
    .mb-service-list,
    .mb-linear-services,
    .mb-dimension-grid,
    .mb-dimension-grid--secondary {
        grid-template-columns: minmax(0, 1fr);
    }

    .mb-service-list--envelope .mb-service-option:last-child {
        grid-column: auto;
    }

    .mb-final-calculation__head,
    .mb-request-form__actions {
        align-items: stretch;
        flex-direction: column;
    }

    .mb-final-calculation__head strong {
        font-size: 27px;
    }

    .mb-request-form__grid,
    .mb-final-facts {
        grid-template-columns: minmax(0, 1fr);
    }

    .mb-request-form__actions .btn {
        width: 100%;
        justify-content: center;
    }

    .mb-proposal-card__head {
        padding: 12px;
        align-items: stretch;
        flex-direction: column;
    }

    .mb-proposal-card__head .btn {
        width: 100%;
        min-width: 0;
    }

    .mb-proposal-card__frame {
        height: 68dvh;
        min-height: 500px;
        padding: 7px;
    }

    .mb-climate-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mb-segments {
        grid-auto-flow: row;
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .mb-status__value {
        font-size: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mb-studio__progress-value,
    .mb-choice__surface,
    .mb-segment__surface,
    .mb-opening-disclosure i {
        transition: none;
    }
}