.sfc,
.sfc * {
    box-sizing: border-box;
}

.sfc {
    --sfc-bg: #ffffff;
    --sfc-soft: #f6f3ef;
    --sfc-soft-2: #fbfaf8;
    --sfc-border: #e5ded6;
    --sfc-text: #211b17;
    --sfc-muted: #776d64;
    --sfc-strong: #6d4d34;
    --sfc-accent: #9b6a45;
    --sfc-accent-soft: #ead8c9;
    --sfc-warning-bg: #fff6de;
    --sfc-warning-border: #f0c56c;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    color: var(--sfc-text);
    font-family: inherit;
}

.sfc__head {
    padding: 28px;
    margin-bottom: 18px;
    border: 1px solid var(--sfc-border);
    border-radius: 24px;
    background: linear-gradient(135deg, var(--sfc-soft), var(--sfc-bg));
}

.sfc__eyebrow {
    margin: 0 0 8px;
    color: var(--sfc-accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.sfc__title {
    margin: 0 0 10px;
    font-size: clamp(26px, 4vw, 42px);
    line-height: 1.12;
}

.sfc__lead {
    max-width: 780px;
    margin: 0;
    color: var(--sfc-muted);
    font-size: 17px;
    line-height: 1.55;
}

.sfc__form,
.sfc__result {
    display: grid;
    gap: 18px;
}

.sfc__panel,
.sfc__summary-card,
.sfc__layout-wrap,
.sfc__details {
    border: 1px solid var(--sfc-border);
    border-radius: 22px;
    background: var(--sfc-bg);
    box-shadow: 0 10px 30px rgba(72, 52, 35, .06);
}

.sfc__panel,
.sfc__layout-wrap,
.sfc__details {
    padding: 20px;
}

.sfc__panel--main {
    background: var(--sfc-soft-2);
}

.sfc__panel-title,
.sfc__layout-head h3,
.sfc__details h3,
.sfc__explain-head h3 {
    margin: 0 0 14px;
    font-size: 20px;
    line-height: 1.25;
}

.sfc__grid {
    display: grid;
    gap: 14px;
}

.sfc__grid--main {
    grid-template-columns: repeat(4, minmax(140px, 1fr));
}

.sfc__grid--cut {
    grid-template-columns: repeat(5, minmax(130px, 1fr));
}

.sfc__field {
    display: grid;
    gap: 7px;
}

.sfc__field span {
    color: var(--sfc-muted);
    font-size: 13px;
    line-height: 1.25;
}

.sfc__field input {
    width: 100%;
    min-height: 44px;
    padding: 9px 12px;
    border: 1px solid var(--sfc-border);
    border-radius: 14px;
    background: #fff;
    color: var(--sfc-text);
    font: inherit;
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.sfc__field input:focus {
    border-color: var(--sfc-accent);
    box-shadow: 0 0 0 4px rgba(155, 106, 69, .13);
}

.sfc__quick {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
}

.sfc__quick span {
    color: var(--sfc-muted);
    font-size: 13px;
    font-weight: 700;
}

.sfc__quick button {
    min-height: 36px;
    padding: 7px 12px;
    border: 1px solid var(--sfc-border);
    border-radius: 999px;
    background: #fff;
    color: var(--sfc-strong);
    font: inherit;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    transition: border-color .15s ease, background-color .15s ease, transform .15s ease;
}

.sfc__quick button:hover,
.sfc__quick button:focus-visible {
    border-color: var(--sfc-accent);
    background: var(--sfc-accent-soft);
}

.sfc__quick button:active {
    transform: translateY(1px);
}

.sfc__summary {
    display: grid;
    grid-template-columns: 1.25fr 1fr 1fr;
    gap: 16px;
    margin-top: 18px;
}

.sfc__summary-card {
    display: grid;
    gap: 5px;
    padding: 18px;
}

.sfc__summary-card--primary {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, #7a5033, #b9835b);
}

.sfc__summary-card span {
    color: inherit;
    opacity: .78;
    font-size: 14px;
}

.sfc__summary-card strong {
    font-size: clamp(25px, 4vw, 40px);
    line-height: 1;
}

.sfc__summary-card small {
    color: inherit;
    opacity: .72;
    font-size: 13px;
}

.sfc__warnings {
    padding: 14px 16px;
    border: 1px solid var(--sfc-warning-border);
    border-radius: 18px;
    background: var(--sfc-warning-bg);
    color: #6e4a0a;
    line-height: 1.5;
}

.sfc__warnings p {
    margin: 0;
}

.sfc__warnings p + p {
    margin-top: 7px;
}

.sfc__explain-head,
.sfc__layout-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 16px;
}

.sfc__explain-head h3,
.sfc__layout-head h3,
.sfc__details h3 {
    margin-bottom: 0;
}

.sfc__explain-head p,
.sfc__layout-head p {
    max-width: 560px;
    margin: 0;
    color: var(--sfc-muted);
    font-size: 14px;
    line-height: 1.45;
}

.sfc__facts {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.sfc__fact {
    display: grid;
    gap: 6px;
    padding: 14px;
    border: 1px solid var(--sfc-border);
    border-radius: 18px;
    background: var(--sfc-soft-2);
}

.sfc__fact span {
    color: var(--sfc-muted);
    font-size: 13px;
    line-height: 1.3;
}

.sfc__fact strong {
    color: var(--sfc-strong);
    font-size: 20px;
    line-height: 1.1;
}

.sfc__layout {
    display: grid;
    gap: 12px;
}

.sfc__row {
    position: relative;
    overflow: hidden;
    min-height: 92px;
    border: 1px solid var(--sfc-border);
    border-radius: 18px;
    background:
        repeating-linear-gradient(90deg, rgba(109, 77, 52, .055) 0, rgba(109, 77, 52, .055) 1px, transparent 1px, transparent 34px),
        #fffdfb;
}

.sfc__row-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid rgba(229, 222, 214, .82);
    color: var(--sfc-muted);
    font-size: 12px;
}

.sfc__row-pieces {
    display: flex;
    align-items: stretch;
    gap: 4px;
    padding: 8px;
    min-height: 74px;
}

.sfc__piece {
    display: flex;
    min-width: 86px;
    align-items: center;
    justify-content: center;
    padding: 8px 6px;
    border: 1px solid rgba(109, 77, 52, .3);
    border-radius: 12px;
    background: var(--sfc-accent-soft);
    color: #402a1b;
    text-align: center;
    font-size: 12px;
    font-weight: 750;
    line-height: 1.25;
}

.sfc__piece:nth-child(2n) {
    background: #e4ead7;
}

.sfc__piece:nth-child(3n) {
    background: #dfe8ee;
}

.sfc__details-list {
    display: grid;
    gap: 10px;
}

.sfc__detail {
    padding: 12px 0;
    border-bottom: 1px solid var(--sfc-border);
}

.sfc__detail:last-child {
    border-bottom: 0;
}

.sfc__detail span {
    display: block;
    color: var(--sfc-muted);
    font-size: 14px;
    line-height: 1.45;
}

@media (max-width: 980px) {
    .sfc__grid--main,
    .sfc__grid--cut {
        grid-template-columns: repeat(2, minmax(130px, 1fr));
    }

    .sfc__summary,
    .sfc__facts {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 680px) {
    .sfc__head,
    .sfc__panel,
    .sfc__layout-wrap,
    .sfc__details {
        border-radius: 18px;
        padding: 16px;
    }

    .sfc__lead {
        font-size: 15px;
    }

    .sfc__grid--main,
    .sfc__grid--cut,
    .sfc__summary,
    .sfc__facts {
        grid-template-columns: 1fr;
    }

    .sfc__quick {
        display: grid;
        grid-template-columns: 1fr;
        align-items: stretch;
    }

    .sfc__quick button {
        width: 100%;
        text-align: center;
    }

    .sfc__explain-head,
    .sfc__layout-head {
        display: grid;
        justify-content: stretch;
    }

    .sfc__row {
        min-height: 82px;
    }

    .sfc__row-title {
        display: grid;
    }

    .sfc__row-pieces {
        min-height: 64px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .sfc__piece {
        flex: 0 0 auto;
    }
}