.chafan-container {
    max-width: 780px;
}

.chafan-intro {
    max-width: 620px;
    margin: 0 auto;
    padding: 0 24px 12px;
    color: var(--ink-light);
    font-size: 14px;
    line-height: 1.8;
    text-align: center;
}

.chafan-form {
    padding-top: 14px;
}

.chafan-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 22px;
}

.chafan-form .input-group {
    min-width: 0;
}

.chafan-form .input-group-wide {
    grid-column: 1 / -1;
}

.chafan-form-hint {
    margin: 8px 0 0;
    color: var(--ink-light);
    font-size: 12px;
    line-height: 1.7;
}

.chafan-error {
    display: none;
    margin: 0 0 16px;
    padding: 10px 12px;
    border-left: 3px solid var(--cinnabar);
    background: rgba(207, 56, 56, 0.06);
    color: var(--cinnabar);
    font-size: 13px;
    line-height: 1.65;
}

.chafan-error.show {
    display: block;
}

.chafan-result {
    padding-top: 24px;
}

.chafan-result-head {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line-faint);
    text-align: center;
}

.chafan-result-kicker {
    margin-bottom: 8px;
    color: var(--cinnabar);
    font-size: 12px;
    letter-spacing: 3px;
}

.chafan-result-title {
    margin: 0;
    font-size: 24px;
    letter-spacing: 4px;
}

.chafan-result-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 14px;
    margin-top: 10px;
    color: var(--ink-light);
    font-size: 12px;
}

.chafan-section-title {
    margin: 24px 0 12px;
    font-size: 16px;
    letter-spacing: 3px;
}

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

.chafan-stage {
    position: relative;
    min-width: 0;
    padding: 14px 10px;
    border: 1px solid var(--line-faint);
    border-radius: 8px;
    background: #fff;
    text-align: center;
}

.chafan-stage:not(:last-child)::after {
    content: "›";
    position: absolute;
    top: 50%;
    right: -9px;
    z-index: 2;
    width: 16px;
    height: 22px;
    margin-top: -11px;
    background: var(--bg-canvas);
    color: var(--ink-light);
    font: 20px/22px Arial, sans-serif;
}

.chafan-stage-label {
    color: var(--ink-light);
    font-size: 12px;
    letter-spacing: 1px;
}

.chafan-stage-result {
    display: block;
    margin: 8px 0 6px;
    color: var(--ink-main);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
}

.chafan-stage-result.severe,
.chafan-stage-result.fire {
    color: var(--cinnabar);
}

.chafan-stage-result.wood {
    color: #2f6b45;
}

.chafan-stage-result.metal {
    color: #8a661f;
}

.chafan-stage-count {
    min-height: 32px;
    color: var(--ink-light);
    font-size: 11px;
    line-height: 1.5;
}

.chafan-summary {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 18px;
    align-items: center;
    margin-top: 16px;
    padding: 18px;
    border: 1px solid var(--line-faint);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.72);
}

.chafan-summary-seal {
    display: flex;
    width: 108px;
    height: 108px;
    margin: 0 auto;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--cinnabar);
    border-radius: 50%;
    color: var(--cinnabar);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
    text-align: center;
}

.chafan-summary-label {
    margin-bottom: 7px;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 2px;
}

.chafan-summary-text {
    color: var(--ink-light);
    font-size: 13px;
    line-height: 1.8;
}

.chafan-palace-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.chafan-palace {
    position: relative;
    min-height: 76px;
    padding: 12px 8px;
    border: 1px solid var(--line-faint);
    background: #fff;
    text-align: center;
}

.chafan-palace.active {
    border-color: rgba(207, 56, 56, 0.45);
    background: rgba(207, 56, 56, 0.045);
}

.chafan-palace.focus {
    border-color: var(--cinnabar);
    box-shadow: inset 0 0 0 1px var(--cinnabar);
}

.chafan-palace-index {
    display: block;
    margin-bottom: 6px;
    color: #b8b1a4;
    font-size: 10px;
}

.chafan-palace-name {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 2px;
}

.chafan-palace-count {
    position: absolute;
    top: 6px;
    right: 6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: var(--cinnabar);
    color: #fff;
    font: 11px/18px Arial, sans-serif;
}

.chafan-formula {
    padding: 22px 16px;
    border: 1px solid var(--line-faint);
    background: #fff;
    text-align: center;
}

.chafan-formula-label {
    color: var(--ink-light);
    font-size: 12px;
    letter-spacing: 2px;
}

.chafan-formula-text {
    display: block;
    margin: 10px 0 8px;
    color: var(--cinnabar);
    font-size: clamp(36px, 9vw, 58px);
    font-weight: 700;
    letter-spacing: 14px;
    line-height: 1.1;
}

.chafan-formula-note {
    color: var(--ink-light);
    font-size: 13px;
}

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

.chafan-element {
    padding: 18px 14px;
    border: 1px solid var(--line-faint);
    border-radius: 8px;
    background: #fff;
    text-align: center;
}

.chafan-element.focus {
    border-color: var(--cinnabar);
}

.chafan-element-char {
    display: block;
    margin-bottom: 8px;
    font-size: 32px;
    font-weight: 700;
}

.chafan-element.metal .chafan-element-char {
    color: #8a661f;
}

.chafan-element.wood .chafan-element-char {
    color: #2f6b45;
}

.chafan-element.fire .chafan-element-char {
    color: var(--cinnabar);
}

.chafan-element-count {
    color: var(--ink-light);
    font-size: 12px;
}

.chafan-element-note {
    margin-top: 10px;
    color: var(--ink-light);
    font-size: 12px;
    line-height: 1.7;
}

.chafan-method-note,
.chafan-source {
    margin-top: 18px;
    padding: 14px 16px;
    border-left: 3px solid #c7bda9;
    background: rgba(130, 114, 84, 0.055);
    color: var(--ink-light);
    font-size: 12px;
    line-height: 1.8;
}

.chafan-source {
    margin: 4px 20px 24px;
}

.chafan-source strong {
    color: var(--ink-main);
}

.chafan-source a {
    color: var(--cinnabar);
}

.chafan-loading {
    opacity: 0.65;
    pointer-events: none;
}

@media (max-width: 640px) {
    .chafan-intro {
        padding-right: 16px;
        padding-left: 16px;
    }

    .chafan-form {
        padding-right: 16px;
        padding-left: 16px;
    }

    .chafan-form-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .chafan-form .input-group-wide {
        grid-column: auto;
    }

    .chafan-stage-flow {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .chafan-stage:nth-child(2)::after {
        display: none;
    }

    .chafan-summary {
        grid-template-columns: 104px minmax(0, 1fr);
        gap: 12px;
        padding: 14px;
    }

    .chafan-summary-seal {
        width: 86px;
        height: 86px;
        font-size: 20px;
    }

    .chafan-palace-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .chafan-palace {
        min-height: 70px;
        padding: 11px 6px;
    }

    .chafan-formula-text {
        letter-spacing: 8px;
    }

    .chafan-element-grid {
        gap: 8px;
    }

    .chafan-element {
        padding: 14px 8px;
    }

    .chafan-element-note {
        font-size: 11px;
    }
}

@media (max-width: 380px) {
    .chafan-stage-flow {
        grid-template-columns: 1fr;
    }

    .chafan-stage:not(:last-child)::after {
        display: none;
    }

    .chafan-summary {
        grid-template-columns: 1fr;
        text-align: center;
    }
}