[data-explain]:not([data-explain-quiet]):not(button):not(a){text-decoration:underline dotted;text-decoration-color:var(--ink-faint);text-decoration-thickness:1px;text-underline-offset:3px;cursor:help;transition:text-decoration-color var(--t-fast) var(--ease-out)}[data-explain]:not([data-explain-quiet]):not(button):not(a):hover,[data-explain]:not([data-explain-quiet]):not(button):not(a):focus-visible{text-decoration-color:var(--lock)}[data-explain][data-explain-quiet]{cursor:help}button[data-explain],a[data-explain]{cursor:help}span[data-explain]:focus{outline:none}span[data-explain]:focus-visible{outline:2px solid var(--lock);outline-offset:2px;border-radius:var(--r-xs)}.fc-explain{position:absolute;top:0;left:0;z-index:9999;pointer-events:none;opacity:0;transform:translateY(4px);transition:opacity var(--t-fast) var(--ease-out),transform var(--t-fast) var(--ease-out);max-width:320px;width:max-content}.fc-explain.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}.fc-explain[data-side="top"]{transform:translateY(-4px)}.fc-explain[data-side="top"].is-visible{transform:translateY(0)}.fc-explain__card{background:var(--paper-warm);color:var(--ink);border-radius:var(--r-md);padding:var(--s-12) var(--s-16);box-shadow:0 2px 4px rgba(14,18,24,0.08),0 16px 32px -8px rgba(14,18,24,0.20);border:1px solid var(--surface-3);font-family:var(--font-sans)}.fc-explain__title{margin:0 0 4px;font-family:var(--font-display);font-size:var(--t-13);font-weight:600;letter-spacing:-0.005em;color:var(--on-surface);line-height:1.3;text-transform:none}.fc-explain__body{margin:0;font-size:var(--t-13);line-height:1.5;color:var(--on-surface);color:rgba(14,18,24,0.78)}@media (max-width:600px){.fc-explain{max-width:calc(100vw - 16px)}.fc-explain__card{padding:var(--s-12)}.fc-explain__title{font-size:var(--t-13)}.fc-explain__body{font-size:var(--t-12)}}@media (prefers-reduced-motion:reduce){.fc-explain{transition:opacity var(--t-fast) linear;transform:none}.fc-explain.is-visible{transform:none}.fc-explain[data-side="top"]{transform:none}}@media print{.fc-explain{display:none!important}[data-explain]{text-decoration:none!important;cursor:auto!important}}