/* === css/knowledge_page.css === */
/* 知识库 · 冷白玻璃 · 与全站一致 */
.knowledge-page {
    background: transparent;
}

.kb-page {
    width: min(1080px, 92%);
    margin: 0 auto;
    padding: clamp(3rem, 8vh, 4.5rem) 0 3.5rem;
}

.kb-header {
    text-align: center;
    margin-bottom: 2rem;
}

.kb-title {
    font-size: clamp(1.5rem, 3vw, 1.85rem);
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--text-1);
    margin: 0;
}

.kb-subtitle {
    margin: 0.45rem 0 1.25rem;
    font-size: 0.82rem;
    color: var(--text-2);
    letter-spacing: 0.2em;
}

.kb-figure {
    margin: 0.85rem 0 1rem;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--line-1, #eee);
    background: var(--bg-2, #fafafa);
}

.kb-figure-img {
    display: block;
    width: 100%;
    max-height: 280px;
    object-fit: cover;
}

.kb-figure-cap {
    margin: 0;
    padding: 0.5rem 0.75rem 0.65rem;
    font-size: 0.74rem;
    color: var(--text-3, #777);
    text-align: center;
}

.kb-search-wrap {
    position: relative;
    max-width: 32rem;
    margin: 0 auto;
}

.kb-search-input {
    width: 100%;
    padding: 0.72rem 1.1rem;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--text-1);
    font-size: 0.88rem;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9) inset, var(--glass-cold-shadow);
    backdrop-filter: var(--glass-cold-blur);
    -webkit-backdrop-filter: var(--glass-cold-blur);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.kb-search-input:focus {
    outline: none;
    border-color: rgba(10, 10, 10, 0.28);
    box-shadow: 0 0 0 3px rgba(10, 10, 10, 0.06);
}

.kb-search-drop {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 0.4rem);
    z-index: 50;
    max-height: 340px;
    overflow: auto;
    padding: 0.35rem;
    border: var(--glass-cold-border);
    border-radius: var(--radius-md);
    background: var(--glass-cold-bg);
    box-shadow: var(--glass-cold-shadow), var(--shadow-lift);
    backdrop-filter: var(--glass-cold-blur);
    -webkit-backdrop-filter: var(--glass-cold-blur);
}

.kb-search-hit {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.6rem 0.7rem;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    cursor: pointer;
}

.kb-search-hit:hover {
    background: var(--bg-2);
}

.kb-search-hit-label {
    font-size: 0.68rem;
    color: var(--text-2);
}

.kb-search-hit-ch {
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-1);
    margin: 0.12rem 0;
}

.kb-search-hit-snippet {
    font-size: 0.72rem;
    line-height: 1.55;
    color: var(--text-2);
}

/* 领域 / 分类导航 */
.kb-domain-bar {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.kb-domain {
    padding: 0.5rem 1.1rem;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--text-2);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    cursor: pointer;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9) inset;
    transition: all 0.15s;
}

.kb-domain:hover {
    border-color: rgba(15, 23, 42, 0.16);
    color: var(--text-1);
    background: rgba(15, 23, 42, 0.04);
}

.kb-domain.active {
    background: rgba(15, 23, 42, 0.92);
    border-color: rgba(15, 23, 42, 0.92);
    color: #fff;
}

.kb-body {
    padding: 1.1rem 1.25rem 1.35rem;
}

.kb-section-bar {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--line-2);
    margin-bottom: 1rem;
}

.kb-section {
    padding: 0.55rem 1rem;
    border: none;
    background: none;
    color: var(--text-2);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.15s, border-color 0.15s;
}

.kb-section:hover {
    color: var(--text-1);
}

.kb-section.active {
    color: var(--text-1);
    border-bottom-color: var(--text-1);
}

.kb-panel[hidden] {
    display: none !important;
}

.kb-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-bottom: 1.1rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--line-2);
}

.kb-stat-item {
    font-size: 0.72rem;
    color: var(--text-2);
}

.kb-stat-item strong {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-1);
    margin-top: 0.15rem;
}

.kb-hint {
    font-size: 0.78rem;
    color: var(--text-2);
    line-height: 1.65;
}

/* 理论文章 */
.kb-article-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.kb-article-item {
    display: block;
    width: 100%;
    text-align: left;
    padding: 1rem 0;
    border: none;
    border-bottom: 1px solid var(--line-2);
    background: transparent;
    cursor: pointer;
    transition: background 0.12s;
}

.kb-article-item:first-child {
    padding-top: 0.25rem;
}

.kb-article-item:hover {
    background: var(--bg-2);
    margin: 0 -0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    border-radius: var(--radius-sm);
}

.kb-article-title {
    font-size: 0.95rem;
    font-weight: 650;
    color: var(--text-1);
    margin: 0 0 0.35rem;
}

.kb-article-summary {
    font-size: 0.78rem;
    line-height: 1.65;
    color: var(--text-2);
    margin: 0;
}

.kb-article-tags {
    margin-top: 0.4rem;
    font-size: 0.62rem;
    color: var(--text-2);
    letter-spacing: 0.04em;
}

/* 典籍网格 */
.kb-book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
    gap: 0.85rem;
}

.kb-book-card {
    border: var(--glass-cold-border);
    border-radius: 14px;
    padding: 1rem 1rem 0.85rem;
    background: var(--glass-cold-bg);
    box-shadow: var(--glass-cold-shadow);
    backdrop-filter: var(--glass-cold-blur);
    -webkit-backdrop-filter: var(--glass-cold-blur);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-height: 8.5rem;
    transition: box-shadow 0.15s, border-color 0.15s;
}

.kb-book-card:hover {
    border-color: rgba(15, 23, 42, 0.12);
    box-shadow: var(--glass-cold-shadow), 0 10px 28px rgba(15, 23, 42, 0.06);
}

.kb-book-title {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-1);
    line-height: 1.4;
}

.kb-book-meta {
    font-size: 0.68rem;
    color: var(--text-2);
    flex: 1;
}

.kb-book-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 0.35rem;
}

.kb-badge {
    font-size: 0.58rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: 999px;
    letter-spacing: 0.04em;
}

.kb-badge-full { background: #ecfdf5; color: #047857; }
.kb-badge-local { background: #eff6ff; color: #1d4ed8; }
.kb-badge-partial { background: #fffbeb; color: #b45309; }
.kb-badge-missing { background: #f4f4f5; color: #71717a; }

.kb-btn-read {
    padding: 0.32rem 0.75rem;
    border: 1px solid var(--line-1);
    border-radius: 999px;
    background: #fff;
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-1);
    cursor: pointer;
}

.kb-btn-read:hover {
    background: var(--bg-2);
}

.kb-btn-ghost {
    display: block;
    margin: 1.25rem auto 0;
    padding: 0.45rem 1.2rem;
    border: 1px solid var(--line-1);
    border-radius: 999px;
    background: #fff;
    font-size: 0.78rem;
    color: var(--text-1);
    cursor: pointer;
}

.kb-btn-ghost:hover {
    background: var(--bg-2);
}

/* 案例 */
.kb-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
    gap: 0.75rem;
}

.kb-case-card {
    padding: 0.85rem;
    border: var(--glass-cold-border);
    border-radius: 14px;
    background: var(--glass-cold-bg);
    box-shadow: var(--glass-cold-shadow);
    backdrop-filter: var(--glass-cold-blur);
    -webkit-backdrop-filter: var(--glass-cold-blur);
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.kb-case-card:hover {
    border-color: rgba(15, 23, 42, 0.12);
    box-shadow: var(--glass-cold-shadow), 0 10px 28px rgba(15, 23, 42, 0.06);
}

.kb-case-card-title {
    margin: 0;
    font-size: 0.84rem;
    font-weight: 650;
    color: var(--text-1);
    line-height: 1.45;
}

.kb-case-card-meta {
    margin: 0.35rem 0 0;
    font-size: 0.68rem;
    color: var(--text-2);
    line-height: 1.5;
}

.kb-case-card-verdict {
    margin: 0.35rem 0 0;
    font-size: 0.68rem;
    color: var(--text-2);
    line-height: 1.5;
}

/* 读书器 */
body.kb-reader-open {
    overflow: hidden;
}

.kb-reader {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: stretch;
    justify-content: center;
    padding: 0.75rem;
}

.kb-reader[hidden] {
    display: none !important;
}

.kb-reader-panel {
    width: min(1060px, 100%);
    display: flex;
    flex-direction: column;
    border: var(--glass-cold-border);
    border-radius: var(--radius-lg);
    background: var(--glass-cold-bg);
    box-shadow: var(--glass-cold-shadow), var(--shadow-modal);
    backdrop-filter: var(--glass-cold-blur);
    -webkit-backdrop-filter: var(--glass-cold-blur);
    overflow: hidden;
}

.kb-reader-top {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--line-2);
}

.kb-icon-btn {
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--line-1);
    border-radius: 999px;
    background: #fff;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    color: var(--text-1);
}

.kb-reader-titles {
    flex: 1;
    min-width: 0;
}

.kb-reader-book {
    font-size: 0.68rem;
    color: var(--text-2);
    letter-spacing: 0.06em;
}

.kb-reader-chapter {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-1);
}

.kb-reader-actions {
    display: flex;
    gap: 0.35rem;
}

.kb-reader-main {
    display: flex;
    flex: 1;
    min-height: 0;
    height: calc(100vh - 5rem);
}

.kb-reader-toc {
    width: 12.5rem;
    flex-shrink: 0;
    overflow: auto;
    padding: 0.5rem;
    border-right: 1px solid var(--line-2);
    background: var(--bg-2);
}

.kb-toc-item {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.42rem 0.5rem;
    margin-bottom: 0.15rem;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-2);
    font-size: 0.72rem;
    line-height: 1.45;
    cursor: pointer;
}

.kb-toc-item:hover {
    background: #fff;
    color: var(--text-1);
}

.kb-toc-item.active {
    background: var(--text-1);
    color: #fff;
}

.kb-reader-text {
    flex: 1;
    overflow: auto;
    padding: 1.5rem clamp(1.25rem, 4vw, 2.5rem) 2.5rem;
    font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
    font-size: 1rem;
    line-height: 2;
    letter-spacing: 0.04em;
    color: #1a1a1a;
    white-space: pre-wrap;
    text-align: justify;
}

/* 详情弹层 */
.kb-detail {
    position: fixed;
    inset: 0;
    z-index: 190;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.kb-detail[hidden] {
    display: none !important;
}

.kb-detail-panel {
    width: min(640px, 100%);
    max-height: 85vh;
    overflow: auto;
    padding: 1.35rem 1.5rem;
    border: var(--glass-cold-border);
    border-radius: var(--radius-lg);
    background: var(--glass-cold-bg);
    box-shadow: var(--glass-cold-shadow), var(--shadow-modal);
    backdrop-filter: var(--glass-cold-blur);
    -webkit-backdrop-filter: var(--glass-cold-blur);
    position: relative;
}

.kb-detail-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
}

.kb-detail-panel h2 {
    margin: 0 2rem 0.35rem 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-1);
}

.kb-meta {
    font-size: 0.72rem;
    color: var(--text-2);
    margin: 0 0 1rem;
}

.kb-detail-body {
    font-size: 0.88rem;
    line-height: 1.85;
    color: var(--text-1);
}

.kb-detail-body h3 {
    font-size: 0.92rem;
    margin: 1rem 0 0.5rem;
}

.kb-detail-body p {
    margin: 0 0 0.75rem;
}

.kb-case-field {
    margin-bottom: 0.75rem;
}

.kb-case-field-k {
    display: inline-block;
    min-width: 1.4rem;
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--text-2);
    margin-right: 0.35rem;
}

.kb-case-field-v {
    font-size: 0.84rem;
    line-height: 1.75;
    white-space: pre-wrap;
}

.kb-case-detail + .kb-case-detail {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line-2);
}

@media (max-width: 720px) {
    .kb-reader-main {
        flex-direction: column;
        height: calc(100vh - 5.5rem);
    }

    .kb-reader-toc {
        width: 100%;
        max-height: 7rem;
        border-right: none;
        border-bottom: 1px solid var(--line-2);
    }

    .kb-reader-text {
        padding: 1rem;
        font-size: 0.92rem;
    }

    .kb-section-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
}