/* 由 delivery/delivery_form.html 内联块抽离（L1286-1435，150 行），内容逐字节保留 */

                                /* 书籍卡片：对齐页级绿白黑体系 */
                                .book-card {
                                    border: 1.5px solid #e5e7eb;
                                    border-radius: 14px;
                                    padding: 1.15rem 1.25rem;
                                    transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
                                    background: #fff;
                                    position: relative;
                                    overflow: hidden;
                                }
                                .book-card:hover {
                                    border-color: #a7f3d0;
                                    box-shadow: none;
                                    transform: none;
                                }
                                .book-card.selected {
                                    border-color: #059669;
                                    background: #f0fdf4;
                                    box-shadow: 0 0 0 3px rgba(16, 185, 129, .1);
                                }
                                .book-card.selected::before {
                                    content: '';
                                    position: absolute;
                                    top: 0;
                                    left: 0;
                                    right: 0;
                                    height: 3px;
                                    background: #059669;
                                }
                                .book-cover {
                                    width: 120px;
                                    height: 160px;
                                    object-fit: cover;
                                    border-radius: 8px;
                                    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
                                    transition: transform 0.2s ease;
                                    cursor: pointer;
                                }
                                .book-cover:hover {
                                    transform: scale(1.03);
                                }
                                .book-info {
                                    flex: 1;
                                }
                                .signed-badge {
                                    display: inline-flex;
                                    align-items: center;
                                    gap: 10px;
                                    padding: 10px 16px;
                                    background: #059669;
                                    color: #fff !important;
                                    -webkit-text-fill-color: #fff !important;
                                    border-radius: 10px;
                                    font-weight: 650;
                                    font-size: 14px;
                                    cursor: pointer;
                                    transition: background .15s ease, box-shadow .15s ease;
                                    box-shadow: none;
                                    border: none;
                                    user-select: none;
                                    -webkit-tap-highlight-color: transparent;
                                    position: relative;
                                    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
                                }
                                .signed-badge:hover {
                                    background: #047857;
                                    box-shadow: none;
                                    border-color: transparent;
                                }
                                .signed-badge.checked {
                                    background: #047857;
                                    box-shadow: 0 0 0 2px rgba(4, 120, 87, .25);
                                    border-color: transparent;
                                }
                                .signed-badge.checked .signed-checkbox-box {
                                    background: #fff;
                                    border-color: #fff;
                                }
                                .signed-badge.checked .signed-checkbox-box::after {
                                    opacity: 1;
                                }
                                .signed-badge input[type="checkbox"] {
                                    position: absolute;
                                    width: 100%;
                                    height: 100%;
                                    margin: 0;
                                    padding: 0;
                                    opacity: 0;
                                    cursor: pointer;
                                    left: 0;
                                    top: 0;
                                    z-index: 1;
                                }
                                .signed-badge .signed-checkbox-box {
                                    width: 22px;
                                    height: 22px;
                                    min-width: 22px;
                                    min-height: 22px;
                                    border: 2px solid rgba(255,255,255,0.9);
                                    border-radius: 6px;
                                    background: rgba(255,255,255,0.2);
                                    display: flex;
                                    align-items: center;
                                    justify-content: center;
                                    transition: all 0.2s ease;
                                    position: relative;
                                }
                                .signed-badge .signed-checkbox-box::after {
                                    content: '';
                                    width: 6px;
                                    height: 11px;
                                    border: solid #059669;
                                    border-width: 0 2px 2px 0;
                                    transform: rotate(45deg);
                                    margin-bottom: 4px;
                                    opacity: 0;
                                    transition: opacity 0.2s ease;
                                }
                                .signed-badge.checked .signed-checkbox-box::after {
                                    border-color: #059669;
                                }
                                .book-title-row {
                                    flex-wrap: wrap;
                                }
                                @media (max-width: 768px) {
                                    .book-card {
                                        padding: 15px;
                                    }
                                    .book-cover-container {
                                        width: 100px;
                                        height: 133px;
                                    }
                                    .book-cover {
                                        width: 100px;
                                        height: 133px;
                                    }
                                    .book-title-row {
                                        flex-direction: column;
                                        align-items: flex-start;
                                        gap: 6px;
                                    }
                                    .book-title-row .form-check-label {
                                        max-width: 100%;
                                    }
                                    .book-title-row .btn-outline-success {
                                        flex-shrink: 0;
                                    }
                                }