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

.frc {
    --frc-bg: #ffffff;
    --frc-soft: #f6f3ef;
    --frc-soft-2: #fbfaf8;
    --frc-border: #e5ded6;
    --frc-text: #211b17;
    --frc-muted: #776d64;
    --frc-strong: #6d4d34;
    --frc-accent: #9b6a45;
    --frc-accent-dark: #745037;
    --frc-accent-soft: #ead8c9;
    --frc-warning-bg: #fff6de;
    --frc-warning-border: #f0c56c;
    --frc-danger-bg: #fff0ed;
    --frc-danger-border: #e99c8f;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    color: var(--frc-text);
    font-family: inherit;
}

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

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

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

.frc__lead {
    max-width: 860px;
    margin: 0;
    color: var(--frc-muted);
    font-size: 17px;
    line-height: 1.55;
}

.frc__form,
.frc__result {
    display: grid;
    gap: 18px;
}

.frc__panel,
.frc__summary-card,
.frc__facts-wrap,
.frc__details,
.frc__safety {
    border: 1px solid var(--frc-border);
    border-radius: 22px;
    background: var(--frc-bg);
    box-shadow: 0 10px 30px rgba(72, 52, 35, .06);
}

.frc__panel,
.frc__facts-wrap,
.frc__details,
.frc__safety {
    padding: 20px;
}

.frc__panel--main {
    background: var(--frc-soft-2);
}

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

.frc__panel-title,
.frc__facts-head h3,
.frc__details h3,
.frc__safety h3 {
    margin: 0;
    font-size: 20px;
    line-height: 1.25;
}

.frc__panel-head p,
.frc__facts-head p {
    max-width: 600px;
    margin: 0;
    color: var(--frc-muted);
    font-size: 14px;
    line-height: 1.45;
}

.frc__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

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

.frc__field span {
    font-size: 14px;
    font-weight: 700;
}

.frc__field small {
    color: var(--frc-muted);
    font-size: 12px;
    line-height: 1.35;
}

.frc__field input,
.frc__field select {
    width: 100%;
    min-height: 46px;
    padding: 10px 12px;
    border: 1px solid var(--frc-border);
    border-radius: 14px;
    background: #fff;
    color: var(--frc-text);
    font: inherit;
    outline: none;
    transition: border-color .18s ease, box-shadow .18s ease;
}

.frc__field input:focus,
.frc__field select:focus {
    border-color: var(--frc-accent);
    box-shadow: 0 0 0 3px rgba(155, 106, 69, .13);
}

.frc__quick {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-top: 16px;
}

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

.frc__quick button,
.frc__button {
    border: 1px solid var(--frc-border);
    border-radius: 999px;
    background: #fff;
    color: var(--frc-accent-dark);
    cursor: pointer;
    font: inherit;
    font-size: 13px;
    font-weight: 700;
    padding: 9px 12px;
    transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.frc__quick button:hover,
.frc__button:hover {
    transform: translateY(-1px);
    border-color: var(--frc-accent);
    background: var(--frc-accent-soft);
}

.frc__intensity {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.frc__intensity label {
    position: relative;
    min-height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border: 1px solid var(--frc-border);
    border-radius: 16px;
    background: var(--frc-soft-2);
    cursor: pointer;
    text-align: center;
    font-weight: 800;
    color: var(--frc-strong);
}

.frc__intensity input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.frc__intensity label:has(input:checked) {
    border-color: var(--frc-accent);
    background: var(--frc-accent-soft);
    box-shadow: inset 0 0 0 1px rgba(155, 106, 69, .2);
}

.frc__summary {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.frc__summary-card {
    padding: 18px;
    min-height: 124px;
}

.frc__summary-card--accent {
    background: linear-gradient(135deg, var(--frc-accent), #b6825b);
    color: #fff;
    border-color: transparent;
}

.frc__summary-card span,
.frc__summary-card small {
    display: block;
}

.frc__summary-card span {
    margin-bottom: 8px;
    color: inherit;
    opacity: .82;
    font-size: 13px;
    font-weight: 700;
}

.frc__summary-card strong {
    display: block;
    font-size: clamp(24px, 3.4vw, 38px);
    line-height: 1.1;
}

.frc__summary-card small {
    margin-top: 7px;
    color: inherit;
    opacity: .75;
    font-size: 13px;
    line-height: 1.35;
}

.frc__facts {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.frc__fact {
    padding: 14px;
    border-radius: 16px;
    background: var(--frc-soft-2);
    border: 1px solid var(--frc-border);
}

.frc__fact span,
.frc__fact strong {
    display: block;
}

.frc__fact span {
    margin-bottom: 6px;
    color: var(--frc-muted);
    font-size: 13px;
}

.frc__fact strong {
    font-size: 18px;
    line-height: 1.2;
}

.frc__warnings {
    display: grid;
    gap: 8px;
}

.frc__warning {
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid var(--frc-warning-border);
    background: var(--frc-warning-bg);
    color: #60481f;
    font-size: 14px;
    line-height: 1.45;
}

.frc__warning--danger {
    border-color: var(--frc-danger-border);
    background: var(--frc-danger-bg);
    color: #72372d;
}

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

.frc__details-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.frc__details-grid .frc__note {
    min-width: 0;
}

.frc__note {
    padding: 14px;
    border: 1px solid var(--frc-border);
    border-radius: 16px;
    background: var(--frc-soft-2);
    color: var(--frc-muted);
    font-size: 14px;
    line-height: 1.5;
}

.frc__note strong {
    color: var(--frc-text);
}

.frc__scale {
    height: 14px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--frc-soft);
    border: 1px solid var(--frc-border);
}

.frc__scale-bar {
    display: block;
    height: 100%;
    width: 0%;
    border-radius: inherit;
    background: linear-gradient(90deg, #c9a384, var(--frc-accent));
    transition: width .2s ease;
}

.frc__safety ul {
    margin: 10px 0 0;
    padding-left: 20px;
    color: var(--frc-muted);
    line-height: 1.55;
}

.frc__safety li + li {
    margin-top: 6px;
}

.frc [hidden] {
    display: none !important;
}

@media (max-width: 980px) {
    .frc__grid,
    .frc__summary,
    .frc__facts {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .frc__panel-head,
    .frc__facts-head,
    .frc__details-grid {
        grid-template-columns: 1fr;
        display: grid;
    }
}

@media (max-width: 640px) {
    .frc {
        max-width: 100%;
    }

    .frc__head,
    .frc__panel,
    .frc__facts-wrap,
    .frc__details,
    .frc__safety {
        padding: 16px;
        border-radius: 18px;
    }

    .frc__grid,
    .frc__summary,
    .frc__facts,
    .frc__intensity {
        grid-template-columns: 1fr;
    }

    .frc__panel-head,
    .frc__facts-head {
        align-items: start;
    }

    .frc__quick {
        gap: 7px;
    }

    .frc__quick button {
        flex: 1 1 calc(50% - 7px);
    }

    .frc__summary-card {
        min-height: auto;
    }
}

@supports not selector(:has(*)) {
    .frc__intensity label {
        justify-content: flex-start;
    }

    .frc__intensity input {
        position: static;
        opacity: 1;
        pointer-events: auto;
        margin-right: 8px;
    }
}