.pd-kpi {
    display: flex;
    gap: 18px;
    flex: none;
    align-items: stretch;
    background-color: var(--pd-bg-card-hd);
    border: 1px solid var(--pd-border);
    border-radius: 12px;
    padding: 12px 20px;
}

.pd-kpi__sep {
    width: 1px;
    background-color: var(--pd-border);
    align-self: stretch;
}

.pd-kpi__card {
    display: block;
    text-align: center;
    text-decoration: none;
    min-width: 52px;
}

.pd-kpi__card:hover { text-decoration: none; }

.pd-kpi__num {
    font: 800 22px/1 system-ui, sans-serif;
    color: var(--pd-text-h);
    display: block;
}

.pd-kpi__label {
    font: 500 9px/1 ui-monospace, Menlo, monospace;
    color: var(--pd-text-muted);
    letter-spacing: 0.06em;
    margin-top: 6px;
    display: block;
}

.pd-kpi__cta {
    font: 600 9.5px/1 system-ui, sans-serif;
    color: var(--pd-accent-text);
    margin-top: 6px;
    display: block;
}

.pd-api { scroll-margin-top: calc(var(--topbar-h, 60px) + 40px); }

.pd-api__cta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.pd-api__cta-btn {
    font: 600 12px/1 system-ui, sans-serif;
    color: var(--pd-accent);
    border: 1px solid var(--pd-accent-border);
    border-radius: 7px;
    padding: 10px 18px;
    text-decoration: none;
    white-space: nowrap;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.pd-api__cta-btn:hover { text-decoration: none; background-color: var(--pd-accent-tint); }

.pd-api__desc {
    font: 400 12px/1.5 system-ui, sans-serif;
    color: var(--pd-text-dim);
    margin-bottom: 16px;
}

.pd-api__grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr 1fr;
    gap: 12px;
    align-items: stretch;
}

.pd-api__card {
    background-color: var(--pd-bg-card);
    border: 1px solid var(--pd-border);
    border-radius: 12px;
    padding: 16px 18px;
}

.pd-api__card--flex { display: flex; flex-direction: column; }

.pd-api__card-title {
    font: 600 9.5px/1 ui-monospace, Menlo, monospace;
    color: var(--pd-text-muted);
    letter-spacing: 0.08em;
}

.pd-api__endpoints { margin-top: 12px; display: flex; flex-direction: column; }

.pd-api__endpoint {
    display: flex;
    gap: 12px;
    padding: 7px 0;
    border-bottom: 1px solid var(--pd-border-soft);
}

.pd-api__endpoint:last-child { border-bottom: none; }

.pd-api__ep-path {
    width: 150px;
    flex: none;
    font: 600 10px/1.4 ui-monospace, Menlo, monospace;
    color: var(--pd-accent);
}

.pd-api__ep-desc {
    font: 400 10.5px/1.4 system-ui, sans-serif;
    color: var(--pd-text-sec);
}

.pd-api__code {
    margin-top: 12px;
    background-color: var(--pd-bg-row);
    border: 1px solid var(--pd-border);
    border-radius: 8px;
    padding: 11px 13px;
    font: 500 10.5px/1.6 ui-monospace, Menlo, monospace;
    color: var(--pd-text-body);
}

.pd-api__card-note {
    font: 400 11px/1.6 system-ui, sans-serif;
    color: var(--pd-text-sec);
    margin-top: 10px;
}

.pd-api__footer-note {
    font: 400 10px/1.6 ui-monospace, Menlo, monospace;
    color: var(--pd-text-ghost);
    margin-top: auto;
    padding-top: 10px;
}

.pd-trust__grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr 1fr;
    gap: 12px;
    align-items: stretch;
}

.pd-trust__card {
    background-color: var(--pd-bg-card);
    border: 1px solid var(--pd-border);
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
}

.pd-trust__card-title {
    font: 600 9.5px/1 ui-monospace, Menlo, monospace;
    color: var(--pd-text-muted);
    letter-spacing: 0.08em;
}

.pd-trust__rows {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    font: 400 11.5px/1.55 system-ui, sans-serif;
    color: var(--pd-text-sec);
}

.pd-trust__row {
    display: flex;
    gap: 10px;
    padding: 7px 0;
    border-bottom: 1px solid var(--pd-border-soft);
}

.pd-trust__row:last-child { border-bottom: none; }

.pd-trust__row-label {
    width: 118px;
    flex: none;
    font-weight: 600;
    color: var(--pd-text-body);
}

.pd-trust__body {
    font: 400 11.5px/1.65 system-ui, sans-serif;
    color: var(--pd-text-sec);
    margin-top: 12px;
}

.pd-trust__body + .pd-trust__body { margin-top: 10px; }
.pd-trust__em { color: var(--pd-text-body); font-weight: 600; }

.pd-trust__cta-row {
    margin-top: auto;
    padding-top: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.pd-trust__cta-btn {
    font: 600 11px/1 system-ui, sans-serif;
    color: var(--pd-text-body);
    border: 1px solid var(--pd-border-strong);
    border-radius: 7px;
    padding: 9px 14px;
    text-decoration: none;
    white-space: nowrap;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.pd-trust__cta-btn:hover { text-decoration: none; border-color: var(--pd-accent); color: var(--pd-accent-text); }
.pd-trust__cta-note { font: 400 10px/1 system-ui, sans-serif; color: var(--pd-text-ghost); }

.pd-trust__disclaimer {
    margin-top: auto;
    padding-top: 12px;
    font: 600 11px/1 system-ui, sans-serif;
    color: var(--pd-text-dim);
}

.pd-trust__disclaimer a { color: var(--pd-text-dim); text-decoration: underline; }

.pd-btt {
    position: fixed;
    bottom: 26px;
    right: 26px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--pd-bg-card-hd);
    border: 1px solid var(--pd-border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font: 700 16px/1 system-ui, sans-serif;
    color: var(--pd-text-body);
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    z-index: 8;
    transition: background-color 0.15s ease, transform 0.15s ease;
}

.pd-btt:hover { text-decoration: none; background-color: var(--pd-bg-alt); transform: translateY(-2px); }

@media (prefers-color-scheme: dark) {
    .pd-btt { box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5); }
}

@media (max-width: 900px) {
    .pd-section { padding: 28px 24px 32px; }
    .pd-api__grid { grid-template-columns: 1fr; }
    .pd-trust__grid { grid-template-columns: 1fr; }
    .pd-hero { padding: 14px 24px 20px; }
    .pd-toc__inner { padding: 0 24px; }
    .pd-toc__label { display: none; }
}

@media (max-width: 768px) {
    .pd-hero__body { flex-direction: column; gap: 12px; }
    .pd-kpi { width: 100%; justify-content: space-between; padding: 10px 14px; gap: 8px; }
    .pd-kpi__card { min-width: 0; flex: 1; }
    .pd-kpi__num { font-size: 18px; }
    .pd-kpi__sep { display: none; }
    .pd-hero__logo { width: 56px; height: 56px; }
    .pd-hero__logo img { width: 56px; height: 56px; }
    .pd-hero__logo-ph { font-size: 19px; }
    .pd-hero__h1 { font-size: 24px; }
    .pd-hero__title-row { flex-wrap: wrap; }
    .pd-section__h2 { font-size: 19px; }
    .pd-section__head { flex-direction: column; align-items: stretch; gap: 10px; }
    .pd-section__title-group { flex-wrap: wrap; }
}

@media (max-width: 375px) {
    .pd-section { padding: 20px 16px 24px; }
    .pd-hero { padding: 12px 16px 16px; }
    .pd-toc__inner { padding: 0 16px; }
    .pd-toc__link { font-size: 12px; padding: 7px 10px; }
    .pd-api__ep-path { width: 110px; }
    .pd-trust__row-label { width: 90px; }
}