.pd-tool {
    --pd-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --pd-text: #17201d;
    --pd-muted: #5f6f68;
    --pd-surface: #ffffff;
    --pd-surface-soft: #f3f7f5;
    --pd-border: #d9e4df;
    --pd-accent: #176b57;
    --pd-accent-strong: #105342;
    --pd-accent-soft: #e7f4ef;
    --pd-warning-bg: #fff8e8;
    --pd-warning-border: #ecd596;
    --pd-warning-text: #6f4d00;
    --pd-focus: #0b63ce;
    --pd-shadow: 0 12px 32px rgba(19, 39, 31, 0.08);
    --pd-radius: 18px;
    --pd-radius-small: 12px;
    color: var(--pd-text);
    font-family: var(--pd-font);
    font-size: 16px;
    line-height: 1.5;
    margin: 32px 0;
}

.pd-tool,
.pd-tool * {
    box-sizing: border-box;
}

.pd-tool .pd-shell {
    background: var(--pd-surface-soft);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius);
    box-shadow: var(--pd-shadow);
    overflow: hidden;
}

.pd-tool .pd-intro {
    padding: 24px 24px 8px;
}

.pd-tool .pd-eyebrow {
    color: var(--pd-accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
    text-transform: uppercase;
}

.pd-tool .pd-title {
    color: var(--pd-text);
    font-family: var(--pd-font);
    font-size: clamp(1.35rem, 2.5vw, 1.85rem);
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 10px;
}

.pd-tool .pd-lead {
    color: var(--pd-muted);
    max-width: 780px;
}

.pd-tool .pd-layout {
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
    padding: 16px 24px 24px;
}

.pd-tool .pd-card {
    background: var(--pd-surface);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius-small);
    min-width: 0;
    padding: 20px;
}

.pd-tool .pd-card-title {
    color: var(--pd-text);
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.pd-tool .pd-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pd-tool .pd-field {
    color: var(--pd-text);
    display: block;
    min-width: 0;
}

.pd-tool .pd-label {
    color: var(--pd-text);
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.pd-tool .pd-input-wrap {
    align-items: stretch;
    background: var(--pd-surface);
    border: 1px solid var(--pd-border);
    border-radius: 10px;
    display: flex;
    min-height: 46px;
    overflow: hidden;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.pd-tool .pd-input-wrap:focus-within {
    border-color: var(--pd-focus);
    box-shadow: 0 0 0 3px rgba(11, 99, 206, 0.14);
}

.pd-tool .pd-input {
    appearance: none;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    color: var(--pd-text);
    flex: 1 1 auto;
    font: inherit;
    font-size: 16px;
    font-weight: 600;
    height: auto;
    min-width: 0;
    outline: 0;
    padding: 10px 12px;
    width: 100%;
}

.pd-tool .pd-prefix,
.pd-tool .pd-suffix {
    align-items: center;
    color: var(--pd-muted);
    display: flex;
    flex: 0 0 auto;
    font-size: 0.92rem;
    font-weight: 700;
    padding: 0 12px;
}

.pd-tool .pd-prefix {
    border-right: 1px solid var(--pd-border);
}

.pd-tool .pd-suffix {
    border-left: 1px solid var(--pd-border);
}

.pd-tool .pd-help {
    color: var(--pd-muted);
    display: block;
    font-size: 0.78rem;
    line-height: 1.4;
    margin-top: 6px;
}

.pd-tool .pd-fieldset {
    border-top: 1px solid var(--pd-border);
    margin-top: 18px;
    padding-top: 18px;
}

.pd-tool .pd-segmented {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pd-tool .pd-radio-label {
    display: block;
    min-width: 0;
    position: relative;
}

.pd-tool .pd-radio {
    height: 1px;
    opacity: 0;
    position: absolute;
    width: 1px;
}

.pd-tool .pd-radio-text {
    align-items: center;
    background: var(--pd-surface-soft);
    border: 1px solid var(--pd-border);
    border-radius: 10px;
    color: var(--pd-text);
    cursor: pointer;
    display: flex;
    font-size: 0.9rem;
    font-weight: 700;
    justify-content: center;
    min-height: 44px;
    padding: 8px 12px;
    text-align: center;
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.pd-tool .pd-radio:checked + .pd-radio-text {
    background: var(--pd-accent-soft);
    border-color: var(--pd-accent);
    color: var(--pd-accent-strong);
}

.pd-tool .pd-radio:focus-visible + .pd-radio-text {
    box-shadow: 0 0 0 3px rgba(11, 99, 206, 0.18);
    outline: 2px solid var(--pd-focus);
    outline-offset: 2px;
}

.pd-tool .pd-presets {
    border-top: 1px solid var(--pd-border);
    margin-top: 18px;
    padding-top: 18px;
}

.pd-tool .pd-presets-label {
    color: var(--pd-muted);
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.pd-tool .pd-preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.pd-tool .pd-button {
    appearance: none;
    border-radius: 9px;
    cursor: pointer;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1;
    min-height: 40px;
    padding: 9px 13px;
    text-transform: none;
    transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.pd-tool .pd-button-secondary {
    background: var(--pd-accent-soft);
    border: 1px solid var(--pd-accent);
    color: var(--pd-accent-strong);
}

.pd-tool .pd-button-ghost {
    background: var(--pd-surface);
    border: 1px solid var(--pd-border);
    color: var(--pd-muted);
}

.pd-tool .pd-button:hover {
    transform: translateY(-1px);
}

.pd-tool .pd-button:focus-visible {
    outline: 3px solid var(--pd-focus);
    outline-offset: 2px;
}

.pd-tool .pd-results-card {
    align-self: stretch;
    display: flex;
    flex-direction: column;
}

.pd-tool .pd-primary-result {
    background: var(--pd-accent);
    border-radius: 14px;
    color: #ffffff;
    padding: 18px;
}

.pd-tool .pd-result-label {
    font-size: 0.82rem;
    font-weight: 700;
    opacity: 0.82;
}

.pd-tool .pd-result-value {
    color: #ffffff;
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin-top: 3px;
    overflow-wrap: anywhere;
}

.pd-tool .pd-result-note {
    font-size: 0.75rem;
    margin-top: 7px;
    opacity: 0.78;
}

.pd-tool .pd-stats {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 14px;
}

.pd-tool .pd-stat {
    background: var(--pd-surface-soft);
    border: 1px solid var(--pd-border);
    border-radius: 10px;
    min-width: 0;
    padding: 12px;
}

.pd-tool .pd-stat-label {
    color: var(--pd-muted);
    font-size: 0.74rem;
    font-weight: 700;
    line-height: 1.3;
}

.pd-tool .pd-stat-value {
    color: var(--pd-text);
    font-size: 1.04rem;
    font-weight: 800;
    margin-top: 3px;
    overflow-wrap: anywhere;
}

.pd-tool .pd-explanation {
    border-left: 3px solid var(--pd-accent);
    color: var(--pd-text);
    font-size: 0.88rem;
    line-height: 1.55;
    margin-top: 16px;
    padding-left: 12px;
}

.pd-tool .pd-warning {
    background: var(--pd-warning-bg);
    border: 1px solid var(--pd-warning-border);
    border-radius: 10px;
    color: var(--pd-warning-text);
    font-size: 0.82rem;
    line-height: 1.5;
    margin-top: 12px;
    padding: 10px 12px;
}

.pd-tool .pd-warning[hidden] {
    display: none;
}

.pd-tool .pd-footnote {
    color: var(--pd-muted);
    font-size: 0.72rem;
    line-height: 1.45;
    margin-top: auto;
    padding-top: 16px;
}

@media (max-width: 820px) {
    .pd-tool .pd-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 620px) {
    .pd-tool {
        margin: 24px 0;
    }

    .pd-tool .pd-shell {
        border-radius: 14px;
    }

    .pd-tool .pd-intro {
        padding: 20px 16px 6px;
    }

    .pd-tool .pd-layout {
        gap: 14px;
        padding: 14px 16px 18px;
    }

    .pd-tool .pd-card {
        padding: 16px;
    }

    .pd-tool .pd-grid,
    .pd-tool .pd-segmented,
    .pd-tool .pd-stats {
        grid-template-columns: 1fr;
    }

    .pd-tool .pd-preset-buttons {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .pd-tool .pd-button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pd-tool *,
    .pd-tool *::before,
    .pd-tool *::after {
        transition-duration: 0.01ms !important;
    }
}