/* Appendix A (keys) and B (FAQ): static sections, no stage. Classes are prefixed `ap-`. */

.appendix .lesson-head { margin-bottom: 26px }

/* ---------- A: shortcut tables ---------- */

.ap-keys {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    align-items: start;
}

.ap-col {
    display: grid;
    gap: 20px;
}

@media (max-width: 960px) {
    .ap-keys { grid-template-columns: minmax(0, 1fr) }
}

.ap-card {
    padding: 16px 20px 8px;
    border-radius: 12px;
    background: var(--card);
    box-shadow: 0 0 0 1px var(--edge), 0 6px 18px rgba(25, 36, 58, .05);
}

.ap-card h3 {
    margin: 0 0 6px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 650;
    letter-spacing: .3px;
}

.ap-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14.5px;
    line-height: 1.55;
}

.ap-table th, .ap-table td {
    padding: 9px 0;
    border-top: 1px solid var(--edge);
    vertical-align: top;
    text-align: left;
}

.ap-table tr:first-child th, .ap-table tr:first-child td { border-top: 0 }

.ap-table th {
    width: 46%;
    padding-right: 16px;
    color: var(--ink);
    font-weight: 600;
}

.ap-table td { color: var(--ink-soft) }
.ap-table b { color: var(--ink); font-weight: 650 }

/* keys inside rows sit a touch lower so the keycap shadow does not touch the line above */
.ap-table kbd, .ap-q kbd {
    display: inline-block;
    margin: 1px 0;
    font-size: 12.5px;
    line-height: 1.45;
}

.ap-note {
    margin: 2px 0 10px;
    padding-top: 9px;
    border-top: 1px solid var(--edge);
    color: var(--ink-mute);
    font-size: 13.5px;
}

.ap-note-top {
    margin: 0 0 2px;
    padding: 0 0 8px;
    border-top: 0;
    border-bottom: 1px solid var(--edge);
}

.ap-note-top + .ap-table tr:first-child th,
.ap-note-top + .ap-table tr:first-child td { border-top: 0 }

/* no one- or two-character last lines (e.g. a lone 「时：」) */
.ap-table th, .ap-table td, .ap-note, .ap-q p { text-wrap: pretty }

/* ---------- B: FAQ cards ---------- */

.ap-faq {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 20px;
    align-items: stretch;
}

@media (max-width: 960px) {
    .ap-faq { grid-template-columns: minmax(0, 1fr) }
}

.ap-q {
    padding: 16px 20px 17px;
    border-radius: 12px;
    background: var(--card);
    box-shadow: 0 0 0 1px var(--edge), 0 6px 18px rgba(25, 36, 58, .05);
}

.ap-q h3 {
    position: relative;
    margin: 0 0 6px;
    padding-left: 14px;
    color: var(--ink);
    font: 650 16px/1.45 var(--font);
}

.ap-q h3::before {
    content: "";
    position: absolute;
    left: 0;
    top: .42em;
    width: 4px;
    height: .95em;
    border-radius: 2px;
    background: var(--accent);
}

.ap-q p {
    margin: 0;
    padding-left: 14px;
    color: var(--ink-soft);
    font-size: 14.5px;
    line-height: 1.7;
}

.ap-q b { color: var(--ink); font-weight: 650 }

.appendix code {
    padding: 1px 5px;
    border-radius: 4px;
    background: #eef1f7;
    color: var(--ink);
    font: 500 13px/1.4 "Cascadia Mono", Consolas, monospace;
    white-space: nowrap;
}

/* long paths break at their <wbr>s (Safari ignores <wbr> under nowrap and widens the page) */
.appendix code:has(wbr) { white-space: normal }