/* P/F：输入行 + 大号比值 + 五档阶梯高亮 */

.pf-copy { min-width: 0; }
.pf-hl { color: var(--dk-accent); }

.pf-jump { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.pf-jump a {
    padding: 6px 12px; font-size: 12.5px; color: var(--dk-ink-2); text-decoration: none;
    border: 1px solid var(--dk-line); border-radius: 99px; background: var(--dk-surface);
    transition: color .14s, border-color .14s, background .14s;
}
.pf-jump a:hover { color: var(--dk-accent); border-color: var(--dk-accent-line); background: var(--dk-accent-soft); }

#pfBerlin, #pfTrap, #pfUse, #pfFaq { scroll-margin-top: 84px; }

.pf-tool { position: sticky; top: 82px; }

.pf-form {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px; padding: 14px 16px 6px;
}
.pf-field { display: grid; gap: 5px; min-width: 0; }
.pf-field > span:first-child { font-size: 12px; font-weight: 600; color: var(--dk-ink-2); }
.pf-box {
    display: flex; align-items: center; gap: 5px; height: 36px; padding: 0 9px;
    border: 1px solid var(--dk-line-strong); border-radius: 8px; background: var(--dk-surface);
    transition: border-color .15s, box-shadow .15s;
}
.pf-box:focus-within { border-color: var(--dk-accent); box-shadow: 0 0 0 3px var(--dk-accent-soft); }
.pf-box input {
    flex: 1; min-width: 0; height: 100%; border: 0; outline: none; padding: 0;
    background: transparent; color: var(--dk-ink);
    font-family: var(--dk-mono); font-size: 13.5px;
}
.pf-box i { font-style: normal; font-size: 10.5px; color: var(--dk-muted); white-space: nowrap; }

.pf-result {
    margin-top: 10px; padding: 14px 16px;
    border-top: 1px solid var(--dk-line);
    background: linear-gradient(180deg, var(--dk-surface-2), var(--dk-surface));
}
.pf-num { display: flex; align-items: baseline; gap: 5px; }
.pf-num b {
    font-family: var(--cl-serif); font-size: 40px; line-height: 1;
    color: var(--dk-accent); letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.pf-num span { font-size: 11px; color: var(--dk-muted); }
.pf-say { margin: 4px 0 0; font-size: 12.5px; line-height: 1.65; color: var(--dk-ink-2); }

/* 阶梯 */
.pf-ladder { display: flex; flex-direction: column; gap: 2px; padding: 8px 16px 4px; }
.pf-row {
    display: flex; align-items: center; gap: 10px;
    padding: 7px 10px; border-radius: 7px;
    background: var(--dk-surface); border: 1px solid transparent;
    transition: background .16s, border-color .16s;
}
.pf-rk {
    flex: none; min-width: 62px;
    font-family: var(--dk-mono); font-size: 11px; color: var(--dk-muted);
}
.pf-rt { font-size: 12px; color: var(--dk-ink-2); }
.pf-row.is-on { border-color: var(--dk-accent); background: var(--dk-accent-soft); }
.pf-row.is-on .pf-rt { color: var(--dk-accent); font-weight: 700; }
.pf-row.is-on .pf-rk { color: var(--dk-accent); }

.pf-note {
    margin: 0; padding: 8px 16px 0;
    font-size: 12px; line-height: 1.65; color: var(--dk-muted);
}

.pf-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 16px 16px; }
.pf-presets { display: inline-flex; flex-wrap: wrap; gap: 6px; margin-left: auto; }
.pf-preset {
    border: 1px dashed var(--dk-line-strong); background: transparent;
    color: var(--dk-muted); font-size: 11.5px; padding: 4px 9px; border-radius: 99px; cursor: pointer;
    transition: color .14s, border-color .14s;
}
.pf-preset:hover { color: var(--dk-accent); border-color: var(--dk-accent-line); }

.pf-rel { display: block; }
.pf-rel h3 { font-size: 15.5px; margin-bottom: 6px; }
.pf-rel p { margin: 0; font-size: 13px; color: var(--dk-muted); line-height: 1.65; }

:root[data-theme="dark"] .pf-num b,
:root[data-theme="dark"] .pf-row.is-on .pf-rt,
:root[data-theme="dark"] .pf-row.is-on .pf-rk,
:root[data-theme="dark"] .pf-jump a:hover,
:root[data-theme="dark"] .pf-preset:hover { color: #7dd3fc; }

@media (max-width: 960px) { .pf-tool { position: static; } }

@media (max-width: 620px) {
    .pf-form { grid-template-columns: 1fr; }
    .pf-num b { font-size: 34px; }
    .pf-presets { margin-left: 0; }
    .pf-tool .dk-tool-head h2 { min-width: 0; }
    .pf-tool .dk-tool-head > span { flex: none; white-space: nowrap; }
}