.cover-choice-panel{margin-top:20px;padding:18px;border:1px solid #ffe1e6;border-radius:16px;background:#fffafb}.cover-choice-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.cover-choice-head small{color:#ff2442;font-size:10px;font-weight:800;letter-spacing:1.2px}.cover-choice-head h3{margin:4px 0 0;font-size:17px}.optional-badge{padding:6px 10px;border-radius:999px;background:#fff0f3;color:#ff2442;font-size:11px;font-weight:800}.cover-choice-body{display:grid;grid-template-columns:116px 1fr;gap:16px;align-items:center;margin-top:14px}.cover-choice-preview{width:116px;aspect-ratio:3/4;overflow:hidden;border:1px solid #eee8ea;border-radius:12px;background:#f7f5f4}.cover-choice-preview img{display:block;width:100%;height:100%;object-fit:cover}.cover-choice-copy strong{display:block;color:#42393e;font-size:14px}.cover-choice-copy p{margin:7px 0 12px;color:#82787d;font-size:12px;line-height:1.6}.cover-choice-actions{display:flex;gap:8px;flex-wrap:wrap}.cover-choice-actions button{padding:9px 13px}.cover-choice-actions .primary{box-shadow:none}.cover-choice-note{margin:12px 0 0;color:#a0979b;font-size:11px}@media(max-width:560px){.cover-choice-body{grid-template-columns:82px 1fr}.cover-choice-preview{width:82px}.cover-choice-actions{display:grid}.cover-choice-actions button{width:100%}}

/* 2026-08-24 二选一首图选择器 */
.cover-choice-body{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:stretch;margin-top:14px}
.cover-option{position:relative;display:grid;grid-template-columns:88px 1fr;gap:12px;align-items:center;padding:12px;border:2px solid #eee8ea;border-radius:14px;background:#fff;cursor:pointer;transition:border-color .15s,box-shadow .15s}
.cover-option:has(input:checked){border-color:#ff2442;box-shadow:0 0 0 3px rgba(255,36,66,.12)}
.cover-option input{position:absolute;opacity:0;pointer-events:none}
.cover-option-preview{position:relative;width:88px;aspect-ratio:3/4;overflow:hidden;border:1px solid #eee8ea;border-radius:10px;background:#f7f5f4}
.cover-option-preview img{display:block;width:100%;height:100%;object-fit:cover}
.cover-option-empty{position:absolute;inset:0;display:grid;place-items:center;background:rgba(247,245,244,.85);color:#a0979b;font-size:12px;font-weight:700}
.cover-option-copy b{display:block;color:#42393e;font-size:13.5px}
.cover-option-copy small{display:block;margin-top:4px;color:#82787d;font-size:11.5px;line-height:1.55}
.summary-cover-editor{margin-top:14px}.summary-cover-editor[hidden]{display:none}
@media(max-width:560px){.cover-choice-body{grid-template-columns:1fr}.cover-option{grid-template-columns:64px 1fr}.cover-option-preview{width:64px}}