/* ═══════════════════════════════════════════════════════════════════
   CottonOmicsKG · 棉花多组学知识图谱 · v2.3.3 美术重设
   ───────────────────────────────────────────────────────────────────
   设计语言：
   · 三色 —— 嫩叶绿(主) / 棉花橙(强调) / 数据青(数据)
   · 现代无衬线（Manrope + Noto Sans SC）+ 数据等宽
   · 浅色清新底 + 微点阵纹理（替代旧羊皮纸）
   · 现代化信息图：6 张彩色统计卡作为记忆点
   · 与旧版（棉花褐 + 羊皮纸 + 衬线）刻意差异化
   ═══════════════════════════════════════════════════════════════════ */

/* v2.3.3：移除 Google Fonts @import——国内访问 fonts.googleapis.com 会挂起，
   浏览器标签圈久转不落；字体回退本地栈（PingFang/Microsoft YaHei/JetBrains Mono→Consolas）。 */

:root {
    /* ── 嫩叶绿 · 主色（棉花叶、生命）── */
    --leaf:         #2A8A52;
    --leaf-deep:    #1F6B3F;
    --leaf-light:   #3CA868;
    --leaf-glow:    #5BB37A;
    --leaf-soft:    #A8D4B5;
    --leaf-bg:      #E8F4ED;

    /* ── 棉花橙 · 强调（棉花桃/果实）── */
    --amber:        #E89B45;
    --amber-deep:   #C97F2E;
    --amber-light:  #F2B774;
    --amber-soft:   #F8DDB6;
    --amber-bg:     #FCF1E1;

    /* ── 数据青 · 知识图谱 / 数据 ── */
    --data:         #2B6CB0;
    --data-light:   #4A8BC9;
    --data-glow:    #6FA8DC;
    --data-soft:    #C8DAEC;
    --data-bg:      #EAF1F8;

    /* ── 6 色统计卡（记忆点）── */
    --c1-gene:    #2A8A52;  /* 基因：嫩叶绿 */
    --c2-snp:     #E89B45;  /* SNP：棉花橙 */
    --c3-tissue:  #3CA868;  /* 组织：浅叶绿 */
    --c4-trait:   #C45A8C;  /* 性状：棉桃粉 */
    --c5-qtl:     #2B6CB0;  /* molQTL：数据青 */
    --c6-paper:   #7C5BA0;  /* 文献：紫罗兰 */

    /* ── 背景与表面（清新通透，绝不羊皮纸）── */
    --bg-base:    #F4F8F2;   /* 浅绿底 */
    --bg-warm:    #FAFCF7;   /* 暖白过渡 */
    --bg-cool:    #FFFFFF;   /* 纯白卡片 */
    --bg-sidebar: #FAFCF7;   /* 侧栏 */
    --surface:    #FFFFFF;   /* 卡片白 */
    --surface-2:  #FBFCFA;   /* 次级表面 */
    --ink:        #1F2A24;   /* 深墨（代码块底） */

    /* ── 文字 ── */
    --text-main:  #1F2A24;
    --text-soft:  #3D4A42;
    --text-muted: #6B7A72;
    --text-faint: #9AA9A0;

    /* ── 边框 ── */
    --border:        #E2EBE0;
    --border-strong: #C9D8C9;
    --border-faint:  rgba(42, 138, 82, 0.10);

    /* ── 圆角与阴影 ── */
    --radius:        12px;
    --radius-lg:     18px;
    --radius-pill:   999px;
    --shadow-xs: 0 1px 2px rgba(31, 42, 36, 0.05);
    --shadow-sm: 0 1px 4px rgba(31, 42, 36, 0.06), 0 1px 2px rgba(31, 42, 36, 0.04);
    --shadow-md: 0 4px 16px rgba(31, 42, 36, 0.08), 0 2px 4px rgba(31, 42, 36, 0.04);
    --shadow-lg: 0 16px 40px rgba(31, 42, 36, 0.10), 0 4px 10px rgba(31, 42, 36, 0.06);
    --shadow-glow: 0 0 0 4px rgba(42, 138, 82, 0.14);

    /* ── 字体（现代无衬线 + 数据等宽，弃用通用字体）── */
    --font-display: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
                    "Hiragino Sans GB", sans-serif;
    --font-sans:    "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
                    "Hiragino Sans GB", sans-serif;
    --font-serif:   "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
                    "Hiragino Sans GB", sans-serif;
    --font-mono:    "JetBrains Mono", "Fira Code", ui-monospace,
                    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ── 全局背景：浅绿清新渐变 + 极淡点阵纹理（替代羊皮纸）── */
body {
    font-family: var(--font-sans);
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-base);
    background-image:
        radial-gradient(circle at 8% 5%, rgba(42, 138, 82, 0.08) 0%, transparent 32%),
        radial-gradient(circle at 92% 95%, rgba(232, 155, 69, 0.06) 0%, transparent 34%),
        radial-gradient(circle at 50% 50%, rgba(43, 108, 176, 0.025) 0%, transparent 60%),
        linear-gradient(160deg, var(--bg-base) 0%, var(--bg-warm) 60%, #FFFFFF 100%);
    background-attachment: fixed;
}
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image: url("/static/img/dots.svg");
    background-size: 220px 220px;
    background-repeat: repeat;
    opacity: 0.45;
}

/* ═══════════════════════════════════════════════════════════════
   v2.3.4 布局翻新 · 基因组条带
   顶部品牌条 → 染色体条带（A/D 亚组）→ 数据带 → 对话区；
   工具/统计/下载/关于收进右侧折叠抽屉（原侧栏迁入）
   ═══════════════════════════════════════════════════════════════ */
.app-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* ── 顶部品牌条（棉桃图标 + 标题 + 版本徽标；右上角抽屉开关）── */
.top-header {
    position: relative;
    text-align: center;
    padding: 1.15rem 3.4rem 0.35rem;
}
.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
}
.brand-mark-text { text-align: left; }
.welcome-title {
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.3px;
    background: linear-gradient(110deg,
        var(--leaf-deep) 0%, var(--leaf) 30%,
        var(--amber-deep) 65%, var(--data) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--leaf-deep);
    display: inline-block;
    line-height: 1.2;
}
.welcome-sub {
    color: var(--text-muted);
    margin-top: 0.15rem;
    font-size: 0.88rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}
/* 工具面板开关（v2.3.4：绿渐变胶囊按钮 + 「☰ 工具」文案，醒目） */
.drawer-toggle {
    position: absolute;
    top: 1.05rem; right: 1.2rem;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0 1.15rem;
    height: 42px;
    border-radius: 999px;
    border: none;
    background: linear-gradient(135deg, var(--leaf) 0%, var(--leaf-light) 60%, var(--leaf-glow) 100%);
    color: #FFFFFF;
    font-size: 0.98rem;
    font-weight: 700;
    font-family: var(--font-sans);
    letter-spacing: 0.5px;
    cursor: pointer;
    box-shadow: 0 5px 14px rgba(42, 138, 82, 0.32);
    transition: all 0.18s ease;
}
.drawer-toggle:hover {
    background: linear-gradient(135deg, var(--leaf-deep) 0%, var(--leaf) 60%, var(--leaf-light) 100%);
    box-shadow: 0 7px 20px rgba(42, 138, 82, 0.42);
    transform: translateY(-1px);
}
.drawer-toggle:active { transform: translateY(0); }

/* v2.3.4：染色体条带已移除（用户：不要 A D 那行） */

/* ── 数据带（6 项统计紧凑横排，运行期 /api/stats 填充）── */
.stats-overview {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.45rem 1.5rem;
    max-width: min(1100px, 94%);
    margin: 0.55rem auto 0;
    padding: 0 1rem;
}
.stat-card {
    display: inline-flex;
    align-items: baseline;
    gap: 0.45rem;
    padding: 0.2rem 0;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    transition: transform 0.18s ease;
}
.stat-card:hover { transform: translateY(-1px); }
.stat-card::before, .stat-card::after { display: none; }
.stat-card > * { position: static; }
.stat-card .stat-value {
    font-family: var(--font-mono);
    font-size: 1.08rem;
    font-weight: 800;
    color: var(--card-color, var(--leaf-deep));
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}
.stat-card .stat-label {
    font-family: var(--font-sans);
    font-size: 0.86rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
}
.stat-card.stat-gene   { --card-color: var(--c1-gene); }
.stat-card.stat-snp    { --card-color: var(--c2-snp); }
.stat-card.stat-tissue { --card-color: var(--c3-tissue); }
.stat-card.stat-trait  { --card-color: var(--c4-trait); }
.stat-card.stat-qtl    { --card-color: var(--c5-qtl); }
.stat-card.stat-paper  { --card-color: var(--c6-paper); }

/* ── 主区（无侧栏，全宽对话；flex 填充剩余高度，对话区内滚）── */
.main-content {
    flex: 1;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    padding: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* ── 右侧折叠抽屉（原侧栏内容迁入）── */
.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(31, 42, 36, 0.32);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 40;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }
.drawer {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 300px;
    background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-sidebar) 100%);
    border-left: 1px solid var(--border);
    padding: 1.2rem 1.2rem 2rem;
    overflow-y: auto;
    transform: translateX(102%);
    transition: transform 0.28s cubic-bezier(0.33, 1, 0.68, 1);
    z-index: 50;
}
.drawer.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.8rem;
}
.drawer-head h3 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--leaf-deep);
    padding-left: 0;
}
.drawer-head h3::before { display: none; }
.drawer-close {
    width: 30px; height: 30px;
    border-radius: 9px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.15s ease;
}
.drawer-close:hover { background: var(--amber-bg); border-color: var(--amber-soft); color: var(--amber-deep); }

@media (max-width: 768px) {
    .top-header { padding: 1rem 3.2rem 0.4rem; }
    .welcome-title { font-size: 1.4rem; }
    .drawer { width: 86vw; max-width: 340px; }
    .kg-graph-hint { display: none; }
}

/* ── 抽屉内容（原侧栏内容）── */
.drawer h3 {
    font-size: 0.95rem;
    margin-bottom: 0.7rem;
    color: var(--text-main);
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: 0.3px;
    position: relative;
    padding-left: 0.7rem;
}
.drawer h3::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 3px; height: 1rem;
    background: var(--leaf);
    border-radius: 2px;
}

.drawer hr {
    border: none;
    border-top: 1px solid var(--border-faint);
    margin: 1rem 0;
}

.drawer .caption {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    line-height: 1.55;
    font-family: var(--font-sans);
}

.status-ok {
    color: var(--leaf);
    font-size: 0.88rem;
    font-weight: 700;
}
.status-err {
    color: #C9342E;
    font-size: 0.88rem;
    font-weight: 700;
}

.kg-section-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--leaf-deep);
    margin: 0.4rem 0 0.3rem 0;
    letter-spacing: 0.3px;
}

.kg-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.kg-item-name {
    font-size: 0.76rem;
    color: var(--text-muted);
    margin: 0;
}
.kg-item-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--leaf-deep);
    margin: 0;
    font-family: var(--font-mono);
}

/* ── 复选框 ── */
.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.4rem 0;
    font-size: 0.88rem;
    color: var(--text-main);
    cursor: pointer;
    transition: color 0.15s;
}
.checkbox-row:hover { color: var(--leaf-deep); }

.checkbox-row input[type="checkbox"] {
    accent-color: var(--leaf);
    width: 16px; height: 16px;
    cursor: pointer;
}

.btn-small {
    width: 100%;
    padding: 0.5rem 0;
    font-size: 0.82rem;
    font-family: var(--font-sans);
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius);
    color: var(--text-soft);
    cursor: pointer;
    margin-top: 0.5rem;
    transition: all 0.18s ease;
    font-weight: 600;
}
.btn-small:hover {
    background: var(--leaf-bg);
    border-color: var(--leaf-soft);
    color: var(--leaf-deep);
    transform: translateY(-1px);
}

/* ── 输入区（兼容旧版 input-wrapper）── */
.input-section {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}
.input-wrapper { flex: 1; }

.input-wrapper input[type="text"] {
    width: 100%;
    padding: 0.7rem 0.95rem;
    font-size: 0.95rem;
    font-family: var(--font-serif);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    outline: none;
    background: var(--surface);
    color: var(--text-main);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.input-wrapper input[type="text"]:focus {
    border-color: var(--leaf);
    box-shadow: var(--shadow-glow);
}

.entity-hint {
    font-size: 0.82rem;
    color: var(--leaf-deep);
    background: var(--leaf-bg);
    border: 1px solid var(--leaf-soft);
    padding: 5px 11px;
    border-radius: 8px;
    margin: 4px 0 0 0;
    display: inline-block;
    font-family: var(--font-mono);
}

.qtl-badge {
    display: inline-block;
    background: var(--data-bg);
    color: var(--data);
    border: 1px solid var(--data-soft);
    padding: 1px 8px;
    border-radius: 5px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-right: 2px;
    font-family: var(--font-mono);
}

.submit-btn {
    padding: 0.75rem 1.4rem;
    font-size: 0.98rem;
    font-weight: 700;
    font-family: var(--font-sans);
    color: #fff;
    background: linear-gradient(135deg, var(--leaf) 0%, var(--leaf-light) 100%);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(42, 138, 82, 0.28);
    letter-spacing: 0.8px;
}
.submit-btn:hover {
    background: linear-gradient(135deg, var(--leaf-deep) 0%, var(--leaf) 100%);
    box-shadow: 0 6px 18px rgba(42, 138, 82, 0.38);
    transform: translateY(-1px);
}
.submit-btn:active { transform: translateY(0); }
.submit-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ── 结果元信息 ── */
.result-meta {
    display: flex;
    gap: 1.2rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 1rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}
.result-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ── 卡片区块（替代旧 section-card：左竖线改为顶部渐变条 + 更柔和阴影）── */
.section-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.4rem 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-sm);
    font-family: var(--font-serif);
    position: relative;
    overflow: hidden;
}
.section-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--leaf), var(--amber), var(--data));
    opacity: 0.7;
}

/* ── 回答容器（Markdown 学术排版）── */
.answer-container {
    font-family: var(--font-serif);
    font-size: 1rem;
    line-height: 1.78;
    color: var(--text-main);
    overflow-wrap: anywhere;
    word-break: break-word;
}
.answer-container p {
    margin-bottom: 0.6rem;
    overflow-wrap: anywhere;
    word-break: break-word;
}

/* ── 流式记录表 ── */
.stream-records {
    width: 100%;
    overflow-x: auto;
}
.records-table {
    width: 100%;
    table-layout: fixed;
    border-collapse: collapse;
    font-size: 0.85rem;
    font-family: var(--font-mono);
}
.records-table-wrap { margin-top: 0.7rem; }
.records-table th {
    text-align: left;
    border: 1px solid var(--border);
    padding: 6px 9px;
    background: var(--leaf-bg);
    color: var(--leaf-deep);
    font-family: var(--font-sans);
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.records-table td {
    border: 1px solid var(--border);
    padding: 5px 9px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.records-table tr:nth-child(even) td {
    background: rgba(42, 138, 82, 0.025);
}
.records-note {
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--text-faint);
}
.show-all-btn {
    margin-top: 4px;
    padding: 3px 10px;
    font-size: 0.78rem;
    border: 1px solid var(--leaf-soft);
    background: var(--leaf-bg);
    color: var(--leaf-deep);
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-sans);
}
.show-all-btn:hover { background: var(--leaf); color: #fff; }

/* ── 警告条（替代旧羊皮纸色，用更现代的色块）── */
.alert {
    padding: 0.85rem 1rem;
    border-radius: var(--radius);
    font-size: 0.92rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}
.alert-warning {
    background: var(--amber-bg);
    border: 1px solid var(--amber-soft);
    color: var(--amber-deep);
}
.alert-error {
    background: #FDF0EE;
    border: 1px solid #F4C2BD;
    color: #C9342E;
}
.alert-info {
    background: var(--data-bg);
    border: 1px solid var(--data-soft);
    color: var(--data);
}

/* ── 折叠器 ── */
.expander {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
    background: var(--surface);
}
.expander-header {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--bg-warm);
    border: none;
    font-size: 0.9rem;
    font-weight: 700;
    font-family: var(--font-sans);
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.15s;
}
.expander-header:hover { background: var(--leaf-bg); color: var(--leaf-deep); }
.expander-body {
    padding: 1rem;
    font-size: 0.88rem;
    background: var(--surface);
    display: none;
}
.expander-body.open { display: block; }
.expander-icon { transition: transform 0.2s; color: var(--leaf); }
.expander-header.open .expander-icon { transform: rotate(90deg); }

/* ── 代码块 ── */
pre {
    background: var(--ink);
    color: #C9D8C9;
    padding: 1rem;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.55;
    margin: 0.5rem 0 1rem 0;
    border: 1px solid #0F1B15;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.25);
}
code { font-family: var(--font-mono); }

/* ── JSON 查看器 ── */
.json-viewer {
    background: var(--ink);
    color: #C9D8C9;
    padding: 1rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #0F1B15;
}

/* ── 导出按钮 ── */
.export-bar {
    display: flex;
    gap: 0.6rem;
    margin-top: 1rem;
}
.export-btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-family: var(--font-sans);
    font-weight: 600;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-soft);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s;
}
.export-btn:hover {
    background: var(--leaf-bg);
    border-color: var(--leaf-soft);
    color: var(--leaf-deep);
}

/* ── 对比网格 ── */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
@media (max-width: 600px) {
    .comparison-grid { grid-template-columns: 1fr; }
}

/* ── 加载指示器（绿橙蓝渐变旋转）── */
.spinner {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    color: var(--text-muted);
    margin: 1rem 0;
}
.spinner::before {
    content: "";
    width: 18px; height: 18px;
    border: 2.5px solid var(--border);
    border-top-color: var(--leaf);
    border-right-color: var(--amber);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── 隐藏 ── */
.hidden { display: none !important; }

/* ── 版本徽标 ── */
.version-badge {
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--leaf), var(--leaf-light));
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    margin-left: 0.5rem;
    vertical-align: middle;
    letter-spacing: 0.5px;
    font-family: var(--font-mono);
}

/* ── 方法 / 意图 / 校验徽标 ── */
.method-badge {
    display: inline-block;
    background: var(--data-bg);
    color: var(--data);
    border: 1px solid var(--data-soft);
    padding: 2px 9px;
    border-radius: 6px;
    font-size: 0.76rem;
    font-weight: 700;
    font-family: var(--font-mono);
}
.intent-badge {
    display: inline-block;
    background: var(--leaf-bg);
    color: var(--leaf-deep);
    border: 1px solid var(--leaf-soft);
    padding: 2px 9px;
    border-radius: 6px;
    font-size: 0.76rem;
    font-weight: 700;
    font-family: var(--font-mono);
}
.validation-badge.fail {
    display: inline-block;
    background: #FDF0EE;
    color: #C9342E;
    border: 1px solid #F4C2BD;
    padding: 2px 9px;
    border-radius: 6px;
    font-size: 0.76rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

/* ── 页脚 ── */
.footer-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-faint);
}

/* ═══════════════════════════════════════════════════════════════
   Markdown 学术三线表 + 衬线术语强调
   ═══════════════════════════════════════════════════════════════ */
.answer-container table {
    border-collapse: collapse;
    width: 100%;
    table-layout: auto;
    margin: 15px 0;
    font-size: 15px;
    border-top: 2px solid var(--leaf);
    border-bottom: 2px solid var(--leaf);
}
.answer-container th {
    background-color: var(--leaf-bg);
    border: none;
    border-bottom: 1px solid var(--leaf);
    padding: 8px 12px;
    text-align: center;
    font-weight: 700;
    font-family: var(--font-serif);
    color: var(--leaf-deep);
}
.answer-container td {
    border: none;
    padding: 7px 12px;
    word-break: break-word;
    overflow-wrap: break-word;
    overflow: hidden;
    font-family: var(--font-serif);
}
.answer-container tr:nth-child(even) td {
    background: rgba(42, 138, 82, 0.03);
}
.answer-container strong {
    font-weight: 700;
    color: var(--leaf-deep);
}
.answer-container em {
    color: var(--amber-deep);
    font-style: italic;
}
.answer-container sup {
    font-size: 0.72em;
    font-weight: 700;
    color: var(--leaf);
}
.answer-container .ref-num {
    font-weight: 700;
    color: var(--leaf-deep);
    margin-right: 3px;
}
.answer-container h1, .answer-container h2, .answer-container h3,
.answer-container h4, .answer-container h5, .answer-container h6 {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--text-main);
    margin: 0.95em 0 0.45em;
    line-height: 1.35;
}
.answer-container h1 { font-size: 1.3rem; }
.answer-container h2 { font-size: 1.16rem; }
.answer-container h3 { font-size: 1.05rem; }
.answer-container h4 { font-size: 1.0rem; }
.answer-container h5 { font-size: 0.96rem; }
.answer-container h6 { font-size: 0.92rem; }
.answer-container ul, .answer-container ol {
    margin: 0.4rem 0 0.7rem 1.5rem;
}
.answer-container li { margin-bottom: 0.28rem; }
.answer-container li::marker { color: var(--leaf); }
.answer-container blockquote {
    margin: 0.6rem 0;
    padding: 0.3rem 0 0.3rem 0.9rem;
    border-left: 3px solid var(--leaf-light);
    color: var(--text-soft);
    font-family: var(--font-serif);
    background: rgba(42, 138, 82, 0.04);
    border-radius: 0 6px 6px 0;
}
.answer-container code {
    font-family: var(--font-mono);
    font-size: 0.86em;
    background: rgba(43, 108, 176, 0.08);
    color: var(--data);
    padding: 1px 5px;
    border-radius: 4px;
}
.answer-container pre {
    background: var(--ink);
    color: #C9D8C9;
    border: 1px solid #0F1B15;
}
.answer-container pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}
.answer-container a {
    color: var(--data-light);
    text-decoration: underline;
    text-decoration-color: var(--data-soft);
    text-underline-offset: 2px;
}
.answer-container a:hover { color: var(--data); }
.answer-container hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1.2rem 0;
}

/* ═══════════════════════════════════════════════════════════════
   v2.3.3 会话 UI · 现代化信息图重设
   ═══════════════════════════════════════════════════════════════ */
.chat-area {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
}
.conversation-area {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem 2rem 1rem;
    scroll-behavior: smooth;
}

/* ── v2.3.4：顶部品牌条 / 染色体条带 / 数据带 / 抽屉布局样式见「布局翻新」段 ── */

/* ── 示例问题：纯文本直接显示（无卡片效果，配色与页面底色连成一片） ── */
.example-bar {
    text-align: center;
    padding: 1rem 2rem 0.5rem;
}
.suggest-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    justify-content: center;
    max-width: 880px;
    margin: 0 auto;
}

/* ── 消息气泡（现代化：助手用棉桃图标，用户用绿渐变）── */
.msg {
    display: flex;
    max-width: min(1100px, 94%);
    margin: 0 auto 1.35rem;
    align-items: flex-start;
}
.msg-user { justify-content: flex-end; }
.msg-assistant { justify-content: flex-start; }
.msg-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--leaf), var(--leaf-light));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.78rem; font-weight: 800;
    margin-right: 0.65rem;
    flex-shrink: 0;
    box-shadow: 0 3px 8px rgba(42, 138, 82, 0.25);
    border: 2px solid var(--surface);
    font-family: var(--font-display);
}
.msg-bubble {
    max-width: 84%;
    padding: 0.8rem 1.15rem;
    border-radius: 16px;
    line-height: 1.68;
    font-size: 1rem;
    word-break: break-word;
}
.msg-user .msg-bubble {
    background: linear-gradient(135deg, var(--leaf) 0%, var(--leaf-light) 55%, var(--leaf-glow) 100%);
    color: #FFFFFF;
    border-bottom-right-radius: 6px;
    white-space: pre-wrap;
    box-shadow: 0 4px 14px rgba(42, 138, 82, 0.22);
    font-weight: 500;
}
/* 助手回复去气泡：纯 MD 铺开（更接近聊天风格）*/
.msg-assistant .msg-bubble {
    background: transparent;
    border: none;
    padding: 0;
    max-width: none;
    border-radius: 0;
}
.msg-assistant .answer-container { min-width: 0; }
.msg-content { white-space: pre-wrap; }

/* ── 输入栏（底部固定靠下；与上方面板区分——浅绿雾面，稍不一样的底色）──
   v2.3.4：上下留白收紧（整体缩进、贴底），不再与输入框拉大距离 */
.chat-input-bar {
    padding: 1.2rem 2rem 0.4rem;
    border-top: 1px solid var(--border-faint);
    background: linear-gradient(180deg,
        rgba(231, 243, 236, 0.55) 0%,
        rgba(241, 247, 242, 0.9) 55%,
        #EEF4EF 100%);
    backdrop-filter: blur(8px);
}
.chat-input-inner {
    display: flex;
    gap: 0.7rem;
    align-items: stretch;
    max-width: min(1100px, 94%);
    margin: 0 auto;
    width: 100%;
}
.chat-input-inner textarea {
    flex: 1;
    border: 1.5px solid var(--border);
    border-radius: 14px;
    padding: 0.8rem 1.1rem;
    font-size: 0.98rem;
    resize: none;
    line-height: 1.55;
    outline: none;
    font-family: var(--font-serif);
    color: var(--text-main);
    background: var(--surface);
    max-height: 160px;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.chat-input-inner textarea:focus {
    border-color: var(--leaf);
    box-shadow: var(--shadow-glow);
}

/* ── 打字机纯文本 ── */
.typing-text {
    white-space: pre-wrap;
    word-break: break-word;
}

/* ── 流式光标 + 思考区 ── */
.stream-cursor {
    display: inline-block;
    color: var(--leaf);
    animation: blink 1s step-end infinite;
    margin-left: 1px;
    font-weight: 700;
}
@keyframes blink { 50% { opacity: 0; } }
.thinking-area:empty::before {
    content: '▍';
    color: var(--leaf);
    animation: blink 1s step-end infinite;
}
.thinking-area {
    font-family: var(--font-serif);
    font-size: 0.86rem;
    color: var(--text-muted);
    background: var(--leaf-bg);
    border-left: 3px solid var(--leaf-light);
    padding: 0.55rem 0.85rem;
    margin: 0.25rem 0 0.75rem;
    border-radius: 0 10px 10px 0;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 30vh;
    overflow-y: auto;
}

/* ── 推荐后续问题 ── */
.suggest-block {
    margin-top: 0.9rem;
    border-top: 1px dashed var(--border);
    padding-top: 0.7rem;
}
.suggest-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-family: var(--font-display);
    font-weight: 700;
}
.suggest-chip {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 0.42rem 0.95rem;
    font-size: 0.85rem;
    color: var(--text-soft);
    cursor: pointer;
    transition: all 0.18s ease;
    font-family: var(--font-sans);
    font-weight: 500;
}
.suggest-chip:hover {
    border-color: var(--leaf-light);
    background: var(--leaf-bg);
    color: var(--leaf-deep);
    transform: translateY(-1px);
}

/* ═══════════════════════════════════════════════════════════════
   v2.3.4 · 知识图谱总览关系图（常驻面板，可折叠）
   12 实体类型节点（大小 ∝ log 数量）+ 关系边（数据流动画）+ 节点浮动
   悬停 → 放大 + 高亮关联边 + 工具提示（类型/数量/简介/ID 示例）
   ═══════════════════════════════════════════════════════════════ */
/* v2.3.4：头部 + 关系图 = 同一张宽卡片，宽度与输入框等宽（min(1100px,94%)），
   图随宽度等比例放大；收起时只隐藏图体，头部条保持与展开一致的宽度。
   必须显式 width:100%——否则 flex 容器内 margin:auto 居中会 shrink-to-fit 到
   内容宽度（实测 318px），max-width 约束不到，卡片永远小 */
.kg-graph-wrap {
    width: 100%;
    max-width: min(1100px, 94%);
    margin: 0.6rem auto 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.kg-graph-wrap.collapsed .kg-graph { display: none; }
.kg-graph-head {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 1rem;
    border-bottom: 1px solid var(--border-faint);
}
.kg-graph-title {
    font-size: 0.85rem;
    color: var(--text-soft);
    letter-spacing: 2px;
    font-weight: 700;
}
.kg-graph-hint {
    font-size: 0.74rem;
    color: var(--text-faint);
    letter-spacing: 1px;
}
.kg-collapse {
    margin-left: auto;
    padding: 0.28rem 0.9rem;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: var(--font-sans);
    color: var(--leaf-deep);
    background: var(--leaf-bg);
    border: 1px solid var(--leaf-soft);
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.15s ease;
}
.kg-collapse:hover {
    background: var(--leaf-soft);
    color: var(--leaf-deep);
}
/* v2.3.4：图体随屏宽自适应（aspect-ratio 1200:400）+ 16:9 矮屏压高（SVG 等比留白）；
   无独立卡片样式——已并入 .kg-graph-wrap 同一张卡片 */
.kg-graph {
    position: relative;
    padding: 0.3rem 0.5rem 0.2rem;
    aspect-ratio: 1200 / 400;
    max-height: min(42vh, 460px);
    overflow: hidden;
}
.kg-graph svg { display: block; width: 100%; height: 100%; }

.kg-node {
    cursor: pointer;
    transform-box: fill-box;
    transform-origin: center;
    transition: transform 0.18s ease;
}
.kg-node:hover { transform: scale(1.08); }
.kg-node circle {
    transition: r 0.18s ease;
    filter: drop-shadow(0 2px 4px rgba(31, 42, 36, 0.18));
}
.kg-node:hover circle { stroke-width: 2.5; }
.kg-node-label {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    fill: var(--text-main);
    pointer-events: none;
}
.kg-node-count {
    font-family: var(--font-mono);
    font-size: 10px;
    fill: var(--text-muted);
    pointer-events: none;
}

/* 关系边：数据流动画 */
.kg-edge {
    stroke: var(--leaf-soft);
    stroke-opacity: 0.7;
    stroke-dasharray: 5 4;
    animation: kg-dashflow 1.4s linear infinite;
}
.kg-edge.hl {
    stroke: var(--leaf);
    stroke-opacity: 1;
    stroke-width: 2;
}
@keyframes kg-dashflow { to { stroke-dashoffset: -18; } }

/* 关系边标签（关系类型，信息真实可核对） */
.kg-edge-label {
    font-family: var(--font-sans);
    font-size: 9px;
    font-weight: 600;
    fill: var(--text-faint);
    pointer-events: none;
    letter-spacing: 0.5px;
}

/* 节点浮动：外层 g 平移振荡（错开延迟），内层 hover 放大不冲突 */
.kg-float { animation: kg-float 5.5s ease-in-out infinite; }
@keyframes kg-float {
    0%, 100% { transform: translate(0, 0); }
    50%      { transform: translate(0, -5px); }
}

/* 工具提示（fixed，JS 跟随鼠标） */
.kg-tooltip {
    position: fixed;
    z-index: 60;
    background: rgba(31, 42, 36, 0.95);
    color: #fff;
    border-radius: 10px;
    padding: 0.6rem 0.85rem;
    font-size: 0.8rem;
    line-height: 1.5;
    max-width: 250px;
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    box-shadow: var(--shadow-md);
}
.kg-tooltip.show { opacity: 1; transform: translateY(0); }
.kg-tooltip .tt-name { font-weight: 800; font-size: 0.9rem; margin-bottom: 0.1rem; }
.kg-tooltip .tt-count { font-family: var(--font-mono); color: var(--leaf-glow); }
.kg-tooltip .tt-desc { color: rgba(255, 255, 255, 0.85); }
.kg-tooltip .tt-id { color: var(--amber-light); font-family: var(--font-mono); font-size: 0.72rem; }

@media (prefers-reduced-motion: reduce) {
    .kg-float, .kg-edge { animation: none; }
}

/* ── 示例问题（首屏显示） ── */
.preset-chip {
    display: block;
    width: 100%;
    padding: 0.55rem 0.95rem;
    font-size: 0.88rem;
    border: 1px solid var(--border);
    background: #F5F9F4;   /* 卡片白上的微浅绿底色，仍属同一面板 */
    border-radius: var(--radius-pill);
    cursor: pointer;
    text-align: left;
    color: var(--text-main);
    transition: all 0.2s ease;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.4rem;
    font-family: var(--font-sans);
    font-weight: 500;
}
.preset-chip:last-child { margin-bottom: 0; }
.preset-chip:hover {
    border-color: var(--leaf-light);
    background: var(--leaf-bg);
    color: var(--leaf-deep);
    transform: translateX(3px);
    box-shadow: var(--shadow-xs);
}
/* v2.3.4：欢迎区示例问题——白色填充气泡，直接浮在页面底色上（无外围卡片、不罗列整行） */
.example-bar .preset-chip {
    display: inline-flex;
    align-items: center;
    width: auto;
    max-width: 100%;
    margin: 0;
    padding: 0.45rem 1.05rem;
    font-size: 0.86rem;
    font-weight: 500;
    line-height: 1.45;
    color: var(--text-main);
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 999px;
    text-align: left;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    box-shadow: none;
}
.example-bar .preset-chip:hover {
    border-color: var(--leaf-light);
    background: var(--leaf-bg);
    color: var(--leaf-deep);
    transform: translateY(-1px);
    box-shadow: var(--shadow-xs);
}
.example-bar .preset-chip:last-child { margin: 0; }

/* ── 报错详情 ── */
.error-detail {
    margin-top: 0.5rem;
    padding: 0.6rem 0.85rem;
    background: #FDF0EE;
    border: 1px solid #F4C2BD;
    border-radius: 8px;
    font-size: 0.82rem;
    color: #A0231E;
    white-space: pre-wrap;
    word-break: break-all;
    font-family: var(--font-mono);
}

/* ── 空状态 ── */
.empty {
    color: var(--text-faint);
    font-size: 0.85rem;
    padding: 0.5rem 0;
}

/* ── 滚动条美化（绿橙配色）── */
.conversation-area::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.preset-scroll-container::-webkit-scrollbar,
.thinking-area::-webkit-scrollbar {
    width: 9px;
}
.conversation-area::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track {
    background: transparent;
}
.conversation-area::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.preset-scroll-container::-webkit-scrollbar-thumb,
.thinking-area::-webkit-scrollbar-thumb {
    background: var(--leaf-soft);
    border-radius: var(--radius-pill);
    border: 2px solid transparent;
    background-clip: padding-box;
}
.conversation-area::-webkit-scrollbar-thumb:hover,
.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--leaf-light);
    background-clip: padding-box;
}

/* ── 移动端适配 ── */
@media (max-width: 768px) {
    .main-content { height: auto; overflow: visible; }
    .chat-area { min-height: 70vh; }
    .msg-bubble { max-width: 92%; }
    .welcome-title { font-size: 1.4rem; }
    .brand-mark { flex-direction: column; gap: 0.4rem; }
    .brand-mark-text { text-align: center; }
    .conversation-area { padding: 1rem; }
    .chat-input-bar { padding: 0.85rem 1rem 1.2rem; }
}

/* ── 16:9 适配：矮屏（1366×768 / 1280×720 等）压缩顶部固定区域，
   压缩关系图高度（SVG 等比留白），保证底部输入栏始终可见 ── */
@media (max-height: 820px) and (min-width: 769px) {
    .top-header { padding: 0.6rem 3.4rem 0.15rem; }
    .welcome-title { font-size: 1.35rem; }
    .welcome-sub { font-size: 0.78rem; margin-top: 0; }
    .stats-overview { margin: 0.3rem auto 0; }
    .kg-graph-wrap { margin-top: 0.35rem; }
    .kg-graph { max-height: 30vh; padding: 0.2rem 0.5rem; }
    .example-bar { padding: 0.1rem 1.2rem 0.8rem; }
    .preset-chip { padding: 0.42rem 0.85rem; font-size: 0.84rem; margin-bottom: 0.3rem; }
    .chat-input-bar { padding: 1rem 2rem 0.4rem; }
    .conversation-area { padding: 0.8rem 2rem 0.5rem; }
}

/* ── 尊重「减少动效」偏好 ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ── 焦点态可访问性 ── */
:focus-visible {
    outline: 2px solid var(--leaf);
    outline-offset: 2px;
    border-radius: 4px;
}
button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline-offset: 2px;
}