/* ============================================================
   学途 · 页面级样式
   两个来源合并，顺序即层叠顺序：
   A. 原 style.css 的页面段（学习任务/评估/视频…）
   B. 原先内嵌在 js/main.js 里 8 处 <style> 块的内容
      （kb-* / rgen-* / path-* / pc-* / interview-* / config-* / tutoring-redirect）
   ============================================================ */

/* ================================================================
   A · 原 style.css 页面段
   ================================================================ */
/* ========== 学习任务 - 双栏布局 ========== */
.split-panel { display: flex; gap: 0; height: 100%; }
.split-panel-left { width: 34%; min-width: 320px; display: flex; flex-direction: column; border-right: 1px solid var(--line); padding-right: 16px; overflow: hidden; }
.split-panel-right { flex: 1; display: flex; flex-direction: column; padding-left: 16px; overflow: hidden; }

/* ========== 学习评估 - 新布局 ========== */
.assessment-grid {
    display: grid;
    grid-template-columns: 35fr 65fr;
    gap: 16px;
    margin: 16px 0;
}
@media (max-width: 768px) {
    .assessment-grid { grid-template-columns: 1fr; }
}

/* Score bar */
.score-bar-wrap {
    position: relative;
    height: 36px;
    background: var(--canvas);
    border-radius: 6px;
    margin: 8px 0 12px;
    overflow: hidden;
}
.score-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--brand), var(--brand-2));
    border-radius: 6px;
    transition: width 0.5s ease;
    min-width: 0;
}
.score-bar-label {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ink);
    white-space: nowrap;
}

/* Evidence sections */
.evidence-section { margin-top: 10px; }
.evidence-section h5 {
    font-size: 0.9rem;
    margin: 0 0 6px 0;
    color: var(--ink);
    font-weight: 650;
}
.evidence-quote {
    padding: 8px 12px;
    margin: 4px 0;
    background: var(--amber-soft);
    border-left: 3px solid var(--s-doing);
    border-radius: 0 6px 6px 0;
    font-size: 0.85rem;
    color: var(--amber);
    line-height: 1.5;
}
.evidence-fact {
    font-size: 0.85rem;
    color: var(--muted);
    padding: 3px 0;
    line-height: 1.5;
}

/* Behavior cards */
.behavior-cards {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 12px 0;
}
.behavior-card {
    flex: 1;
    min-width: 90px;
    padding: 10px 8px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    text-align: center;
    transition: transform 0.15s;
}
.behavior-card:hover { transform: translateY(-2px); }
.bc-icon { font-size: 1.3rem; display: block; margin-bottom: 2px; }
.bc-num { font-size: 1.2rem; font-weight: 700; color: var(--brand); }
.bc-label { font-size: 0.68rem; color: var(--faint); }

/* Advice panel */
.advice-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 8px 0;
}
@media (max-width: 768px) {
    .advice-panel { grid-template-columns: 1fr; }
}
.advice-block {
    padding: 12px;
    border-radius: 10px;
    font-size: 0.84rem;
    line-height: 1.5;
}
.advice-block h5 { margin: 0 0 6px 0; font-size: 0.88rem; }
.advice-block ul { margin: 0; padding-left: 18px; }
.advice-block li { margin: 2px 0; }
.advice-strength { background: var(--green-soft); border: 1px solid var(--green-soft); color: var(--green); }
.advice-weakness { background: var(--red-soft); border: 1px solid var(--red-soft); color: var(--red); }
.advice-suggestion { background: var(--brand-tint); border: 1px solid var(--brand-tint); color: var(--brand-deep); }
.advice-adjustment { background: var(--amber-soft); border: 1px solid var(--amber); color: var(--amber); }

/* Agent generation animation */

/* 6-Agent generation animation */
.agent-gen-container {
    display: flex; flex-direction: column; gap: 20px;
    padding: 28px 24px; height: 100%;
}
.agent-gen-header {
    text-align: center;
}
.agent-gen-header h3 {
    margin: 8px 0 4px; font-size: 1.1rem;
}
.agent-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    flex: 1;
    align-content: center;
}
.assess-steps-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin: 12px 0;
}
@media (max-width: 768px) {
    .assess-steps-grid { grid-template-columns: repeat(3, 1fr); }
}
.assess-step-card { min-width: 0; }
.agent-card {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 2px solid var(--line);
    background: var(--surface);
    transition: all 0.4s ease;
    opacity: 0.5;
}
.agent-card.active {
    opacity: 1;
    border-color: var(--brand);
    background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 3%, transparent), var(--surface) 40%);
    box-shadow: 0 0 16px color-mix(in srgb, var(--brand) 13%, transparent);
    transform: translateY(-2px);
}
.agent-card.done {
    opacity: 1;
    border-color: var(--s-done);
    background: color-mix(in srgb, var(--s-done) 4%, transparent);
}
.agent-card.done .agent-dot { background: var(--s-done); box-shadow: 0 0 6px var(--s-done); }
.agent-card.error {
    opacity: 1;
    border-color: var(--s-overdue);
    background: color-mix(in srgb, var(--s-overdue) 3%, transparent);
}
.agent-card.error .agent-dot { background: var(--s-overdue); box-shadow: 0 0 6px var(--s-overdue); }
.agent-card.pulse {
    animation: agentPulse 1.5s infinite;
}
.agent-card-icon {
    width: 36px; height: 36px;
    border-radius: 10px;
    background: color-mix(in srgb, var(--brand) 8%, transparent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; color: var(--brand);
    flex-shrink: 0;
    transition: all 0.3s;
}
.agent-card.active .agent-card-icon {
    transform: scale(1.1);
    box-shadow: 0 0 12px color-mix(in srgb, var(--brand) 19%, transparent);
}
.agent-card-info { flex: 1; min-width: 0; }
.agent-card-name {
    font-size: .8rem; font-weight: 650;
}
.agent-card-desc {
    font-size: .68rem; color: var(--faint);
}
.agent-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--line);
    display: inline-block;
    transition: all 0.3s;
}
.agent-card.active .agent-dot {
    background: var(--brand);
    animation: dotBlink 0.8s infinite;
}
@keyframes dotBlink {
    0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--brand); }
    50% { opacity: 0.3; box-shadow: 0 0 12px var(--brand); }
}
@keyframes agentPulse {
    0%, 100% { box-shadow: 0 0 8px color-mix(in srgb, var(--brand) 13%, transparent); }
    50% { box-shadow: 0 0 24px color-mix(in srgb, var(--brand) 31%, transparent); transform: translateY(-1px); }
}
.agent-gen-footer {
    display: flex; flex-direction: column; gap: 10px;
    align-items: center;
}
.agent-gen-progress-wrap {
    width: 100%; max-width: 400px;
    height: 6px;
    background: var(--line);
    border-radius: 3px;
    overflow: hidden;
}
.agent-gen-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--brand), var(--s-done));
    border-radius: 3px;
    transition: width 0.6s ease;
}
.agent-gen-timer {
    font-size: .78rem; color: var(--faint);
    transition: color 0.3s;
}
/* depth option selected state handled inline */

/* Score & dim badges */
.score-badge {
    display: inline-block;
    min-width: 32px;
    padding: 2px 8px;
    background: var(--brand);
    color: #fff;
    border-radius: 12px;
    font-size: 0.82rem;
    font-weight: 700;
    text-align: center;
}
.dim-badge {
    font-size: 0.82rem;
    font-weight: 500;
    white-space: nowrap;
}

/* --- 任务列表左栏 --- */
/* flex-wrap：左栏最窄 320px，加了「列表/日历」切换后工具条会挤，
   窄屏时允许换行，别撑破容器 */
.split-panel-left .toolbar { display: flex; flex-wrap: wrap; gap: 8px; padding: 4px 0 12px; flex-shrink: 0; }
.task-list-wrap { flex: 1; overflow-y: auto; }
.task-list-wrap::-webkit-scrollbar { width: 4px; }
.task-list-wrap::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.08); border-radius: 4px; }

.task-card { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 6px; cursor: pointer; transition: all 0.2s ease; background: var(--surface); }
.task-card:hover { border-color: var(--brand); box-shadow: 0 3px 12px rgba(198,123,92,0.08); transform: translateX(2px); }
.task-card.active { border-color: var(--brand); background: var(--brand-tint); box-shadow: 0 2px 8px rgba(198,123,92,0.12); }
.task-card-icon { width: 34px; height: 34px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 0.82rem; flex-shrink: 0; }
.task-card-body { flex: 1; min-width: 0; }
/* 标题要能出省略号，但旁边的「路径」角标不能被一起裁掉 ——
   所以标题本身是 flex 容器，只有文字部分负责截断。 */
.task-card-title { display: flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.88rem; margin-bottom: 3px; color: var(--ink); }
.task-title-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.task-card-meta { font-size: 0.72rem; color: var(--faint); display: flex; gap: 10px; align-items: center; }
.task-card-actions { display: flex; gap: 3px; flex-shrink: 0; opacity: 0.5; transition: opacity 0.15s; }
.task-card:hover .task-card-actions { opacity: 1; }
.task-card-actions .btn { padding: 3px 8px; font-size: 0.68rem; border-radius: 5px; }

/* 「路径 第N步」角标 —— 只在后端核对到真实节点时出现 */
.task-path-tag { display: inline-flex; align-items: center; gap: 3px; flex-shrink: 0; padding: 1px 6px; border-radius: 999px; background: var(--brand-tint); color: var(--brand-deep); font-size: 0.62rem; font-weight: 600; white-space: nowrap; }
.task-path-tag i { font-size: 0.58rem; }

/* 卡片上的节点名一行 —— 让「对应路径哪一步」不用点开就能看到 */
.task-card-path { font-size: 0.7rem; color: var(--brand-deep); margin-bottom: 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.task-card-path i { font-size: 0.62rem; opacity: 0.75; margin-right: 2px; }

/* 详情页的节点行 */
.task-node { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; padding: 8px 12px; border-radius: 8px; background: var(--brand-tint); color: var(--brand-deep); font-size: 0.82rem; }
.task-node i { font-size: 0.72rem; }

/* 这两处点了会跳到学习路径的对应节点 —— 得看得出能点 */
.task-path-tag[role="button"],
.task-card-path[role="button"] { cursor: pointer; transition: background 0.15s, color 0.15s; }
.task-path-tag[role="button"]:hover { background: var(--brand); color: #fff; }
.task-card-path[role="button"]:hover { text-decoration: underline; }

/* 详情页那行同样可点，右侧给个箭头提示去向 */
.task-node[role="button"] { cursor: pointer; transition: background 0.15s; }
.task-node[role="button"]:hover { background: var(--brand); }
.task-node[role="button"]:hover, .task-node[role="button"]:hover * { color: #fff; }
.task-node-go { margin-left: auto; opacity: 0.6; }

/* 跳过去之后闪一下 —— 满屏节点，不闪就不知道落哪了 */
.path-node-flash { animation: pathNodeFlash 0.6s ease-in-out 3; }
@keyframes pathNodeFlash {
    0%, 100% { box-shadow: none; }
    50% { box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 45%, transparent), 0 6px 22px color-mix(in srgb, var(--brand) 22%, transparent); }
}
.task-node-none { background: var(--canvas); color: var(--faint); }

/* 任务详情里的「生成原因」—— 路径对齐说明就写在这段里 */
.task-reason { margin-top: 12px; background: var(--brand-tint); border-left: 3px solid var(--brand); border-radius: 8px; padding: 10px 12px; }
.task-reason-head { display: flex; align-items: center; gap: 6px; font-size: 0.76rem; font-weight: 650; color: var(--brand-deep); margin-bottom: 5px; }
.task-reason-body { font-size: 0.82rem; line-height: 1.7; color: var(--ink); white-space: pre-wrap; }

/* --- 左栏「列表 / 日历」切换 --- */
.task-view-tabs { display: flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.task-view-tab { border: none; background: transparent; padding: 5px 11px; font-size: 0.76rem; color: var(--muted); cursor: pointer; font-family: inherit; transition: background 0.15s, color 0.15s; display: flex; align-items: center; gap: 5px; }
.task-view-tab:hover { color: var(--ink); background: var(--canvas); }
.task-view-tab.active { background: var(--brand); color: #fff; }
.task-view-tab + .task-view-tab { border-left: 1px solid var(--line); }

/* --- 任务日历 --- */
.task-cal-wrap { flex: 1; overflow-y: auto; padding-right: 2px; }
.task-cal-wrap::-webkit-scrollbar { width: 4px; }
.task-cal-wrap::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.08); border-radius: 4px; }

.cal-nav { display: flex; align-items: center; gap: 6px; margin-bottom: 10px; }
.cal-title { font-size: 0.88rem; font-weight: 650; color: var(--ink); letter-spacing: 0.01em; }
.cal-nav-btn { border: 1px solid var(--line); background: var(--surface); color: var(--muted); width: 24px; height: 24px; border-radius: 6px; cursor: pointer; font-size: 0.68rem; display: flex; align-items: center; justify-content: center; transition: all 0.15s; }
.cal-nav-btn:hover { border-color: var(--brand); color: var(--brand); }
.cal-month-total { font-size: 0.72rem; color: var(--faint); }
.cal-today-btn { border: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: 0.72rem; padding: 3px 9px; border-radius: 6px; cursor: pointer; font-family: inherit; transition: all 0.15s; }
.cal-today-btn:hover { border-color: var(--brand); color: var(--brand); }

.cal-head { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; margin-bottom: 3px; }
.cal-head span { text-align: center; font-size: 0.68rem; color: var(--faint); padding-bottom: 2px; }

.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; }
.cal-cell { position: relative; aspect-ratio: 1 / 0.86; border: 1px solid transparent; border-radius: 7px; padding: 4px 4px 3px; display: flex; flex-direction: column; gap: 3px; transition: background 0.15s, border-color 0.15s; }
.cal-blank { background: transparent; }
.cal-has { background: var(--canvas); cursor: pointer; }
.cal-has:hover { border-color: var(--brand); background: var(--brand-tint); }
.cal-daynum { font-size: 0.72rem; color: var(--muted); line-height: 1; font-variant-numeric: tabular-nums; }
.cal-has .cal-daynum { color: var(--ink); font-weight: 600; }

/* 今天：品牌色实心小圆圈包住日号 */
.cal-today .cal-daynum { background: var(--brand); color: #fff; border-radius: 999px; width: 17px; height: 17px; display: flex; align-items: center; justify-content: center; font-size: 0.66rem; }
/* 选中那天：描边 */
.cal-selected { border-color: var(--brand); background: var(--brand-tint); }
/* 有未完成且已过期 → 日号标红（实测有 2 条 7 月的漏网） */
.cal-overdue .cal-daynum { color: var(--m-low); font-weight: 700; }

.cal-dots { display: flex; align-items: center; gap: 3px; flex-wrap: wrap; }
/* 三个状态都是实心点，全靠色相分。所以「未完成」不能用 --s-doing(=--amber #8a6416)——
   那个暗琥珀跟 --s-done 的深绿在小尺寸上几乎同色，用户实测分不出，改用调色板里的亮金。
   （--xiang 原本是六维评估「学习投入」轴色，色相分散、饱和度统一，拿来当点色正好。） */
.cal-dot { width: 7px; height: 7px; border-radius: 999px; display: block; }
.cal-dot-done { background: var(--s-done); }
.cal-dot-todo { background: var(--xiang); }
.cal-dot-late { background: var(--s-overdue); }
.cal-more { font-size: 0.6rem; color: var(--faint); line-height: 1; margin-left: 1px; }

/* 日历图例 —— 圆点改成按完成状态上色后，不给说明就只能靠猜 */
.cal-legend { display: flex; align-items: center; gap: 4px; padding: 0 4px 8px; font-size: 0.62rem; color: var(--faint); }
.cal-legend span { margin-right: 12px; }

/* 右栏「某一天的任务」列表 */
.task-day-list { display: flex; flex-direction: column; }

/* --- 右侧 AI 面板 --- */
.ai-stream-panel { flex: 1; overflow-y: auto; padding: 16px 6px 16px 0; }
.ai-stream-panel::-webkit-scrollbar { width: 4px; }
.ai-stream-panel::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.08); border-radius: 4px; }

/* ========== 右侧 AI 面板 ========== */

/* 空状态 — 产品级占位 */
.ai-stream-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    height: 100%; text-align: center; gap: 20px;
    background: linear-gradient(160deg, rgba(198,123,92,0.015) 0%, rgba(198,123,92,0.05) 50%, rgba(212,160,74,0.03) 100%);
    border-radius: 20px; border: 2px dashed rgba(198,123,92,0.12);
    position: relative; overflow: hidden;
}
.ai-stream-placeholder::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(198,123,92,0.03) 0%, transparent 50%);
    pointer-events: none;
}
.ai-stream-placeholder .ph-icon {
    width: 80px; height: 80px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(198,123,92,0.06), rgba(212,129,74,0.1));
    display: flex; align-items: center; justify-content: center; font-size: 2.2rem;
    color: var(--brand);
    box-shadow: 0 12px 32px rgba(198,123,92,0.06), inset 0 1px 0 rgba(255,255,255,0.6);
    position: relative; z-index: 1;
}
.ai-stream-placeholder .ph-icon::after {
    content: ''; position: absolute; inset: -6px; border-radius: 50%;
    border: 2px solid rgba(198,123,92,0.06); pointer-events: none;
}
.ai-stream-placeholder .ph-title { font-size: 1.05rem; font-weight: 650; color: var(--ink); position: relative; z-index: 1; }
.ai-stream-placeholder .ph-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.7; max-width: 320px; position: relative; z-index: 1; }
.ai-stream-placeholder .ph-hint {
    font-size: 0.73rem; color: var(--faint);
    display: flex; align-items: center; gap: 6px;
    background: var(--surface); padding: 8px 16px;
    border-radius: 20px; box-shadow: var(--sh, 0 1px 2px rgba(0,0,0,0.04));
    position: relative; z-index: 1;
}

/* 生成中动画 */
/* 任务生成步骤卡片（复用 .assess-steps-grid + .agent-card） */

/* 薄弱点卡片 — 诊断报告风格 */
.stream-weakpoint {
    padding: 14px 18px; margin: 10px 0;
    border-left: 4px solid var(--red);
    background: var(--surface); border-radius: 0 12px 12px 0;
    font-size: 0.85rem; line-height: 1.65; animation: fadeInUp 0.4s ease;
    color: var(--ink);
    box-shadow: 0 1px 3px rgba(224,85,85,0.04);
    border-top: 1px solid var(--line);
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.stream-weakpoint .wp-severity { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 0.7rem; font-weight: 600; margin-right: 8px; letter-spacing: 0.02em; }
.stream-weakpoint .wp-severity.high { background: var(--red-soft); color: var(--red); }
.stream-weakpoint .wp-severity.medium { background: rgba(212,160,74,0.12); color: var(--amber); }
.stream-weakpoint .wp-severity.low { background: rgba(123,167,188,0.1); color: var(--brand); }
.stream-weakpoint .wp-evidence { margin-top: 8px; font-size: 0.78rem; color: var(--faint); font-style: italic; padding: 6px 10px; background: var(--canvas); border-radius: 6px; }

/* 摘要横幅 */
.stream-summary {
    padding: 24px; margin: 16px 0;
    background: linear-gradient(135deg, rgba(198,123,92,0.03), rgba(212,160,74,0.05));
    border-radius: 16px; text-align: center; animation: fadeInUp 0.5s ease;
    border: 1px solid rgba(198,123,92,0.06);
}
.stream-summary .count { font-size: 3rem; font-weight: 700; color: var(--brand); letter-spacing: -0.03em; line-height: 1; }
.stream-summary .label { font-size: 0.9rem; color: var(--muted); margin-top: 6px; font-weight: 500; }

/* 任务结果卡片 */
.stream-task-card {
    padding: 16px 18px; margin-bottom: 12px;
    border: 1px solid var(--line); border-radius: 14px;
    background: var(--surface); box-shadow: var(--sh, 0 1px 2px rgba(0,0,0,0.04));
    animation: fadeInUp 0.4s ease; transition: all 0.2s;
}
.stream-task-card:hover { box-shadow: var(--sh, 0 4px 6px rgba(0,0,0,0.06)); transform: translateY(-1px); }
.stream-task-card .st-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 10px; gap: 12px; }
.stream-task-card .st-title { font-weight: 650; font-size: 0.92rem; color: var(--ink); flex: 1; }
.stream-task-card .st-badge { font-size: 0.7rem; padding: 4px 12px; border-radius: 12px; font-weight: 550; white-space: nowrap; letter-spacing: 0.02em; }
.st-badge.STUDY, .st-badge.study { background: rgba(198,123,92,0.08); color: var(--brand); }
.st-badge.EXERCISE, .st-badge.exercise { background: var(--amber-soft); color: var(--amber); }
.st-badge.REVIEW, .st-badge.review { background: var(--green-soft); color: var(--green); }
.st-badge.EXAM, .st-badge.exam { background: var(--red-soft); color: var(--red); }
.stream-task-card .st-meta { display: flex; gap: 20px; font-size: 0.78rem; color: var(--faint); margin-bottom: 10px; align-items: center; }
.stream-task-card .st-meta span { display: flex; align-items: center; gap: 5px; }
.stream-task-card .st-desc { font-size: 0.84rem; line-height: 1.75; color: var(--muted); }
.stream-task-card .st-reason { font-size: 0.78rem; color: var(--muted); margin-top: 10px; padding: 10px 14px; background: var(--canvas); border-radius: 10px; line-height: 1.6; }
.stream-task-card .st-reason i { color: var(--amber); margin-right: 8px; }

.stream-error { padding: 16px 20px; background: var(--red-soft); border: 1px solid rgba(224,85,85,0.15); border-radius: 12px; color: var(--red); font-size: 0.85rem; display: flex; align-items: center; gap: 10px; margin: 8px 0; }

/* ========== 学习任务 · Agent 工作台 ==========
   结构对齐 docs/mockups/学习任务-生成中.html：
   头部（图标+标题+副标题+计时器）→ 三张步骤卡 → 进度条 → 实时输出流。
   颜色全取 tokens.css，不另造色。 */

.task-board-head { display: flex; align-items: center; gap: 10px; padding: 0 0 14px; border-bottom: 1px solid var(--line); flex-shrink: 0; }
.task-board-head .tbh-icon { width: 30px; height: 30px; border-radius: var(--r-sm); flex-shrink: 0; background: var(--brand-tint); color: var(--brand); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; }
.task-board-head .tbh-text { flex: 1; min-width: 0; }
.task-board-head .tbh-title { font-size: 0.95rem; font-weight: 650; color: var(--ink); }
.task-board-head .tbh-sub { font-size: 0.75rem; color: var(--faint); margin-top: 2px; }
.task-board-head .tbh-timer { font-size: 0.75rem; color: var(--faint); font-variant-numeric: tabular-nums; flex-shrink: 0; }

/* 工作台本体：撑满右栏，让「实时输出」吃掉剩余高度并自己滚动 */
.gen-workbench { display: flex; flex-direction: column; height: 100%; min-height: 0; }

/* 四张卡等分整宽、排成一行 —— 必须盖掉 .assess-steps-grid 的 5 列，
   否则子项会挤在左边、右边空一大块。
   列数要与 main.js 里 stepDefs 的条数一致：加到 4 个之后这里还是 3，
   第 4 张卡就被挤到第二行（用户报的就是这个）。 */
.gen-steps { grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 16px 0 0; flex-shrink: 0; }
.gen-step { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 5px; padding: 12px 6px; border-radius: var(--r-sm); border: 1px solid var(--line); background: var(--canvas); transition: var(--transition); }
.gen-step-icon { width: 34px; height: 34px; border-radius: var(--r-sm); background: var(--sunk); color: var(--faint); display: flex; align-items: center; justify-content: center; font-size: 0.85rem; transition: var(--transition); }
.gen-step-name { font-size: 0.8rem; font-weight: 650; color: var(--ink); }
.gen-step-desc { font-size: 0.7rem; color: var(--faint); }
.gen-step.doing { border-color: var(--brand); background: var(--brand-tint); }
.gen-step.doing .gen-step-icon { background: var(--brand); color: var(--on-brand); }
.gen-step.done .gen-step-icon { background: var(--s-done); color: var(--on-brand); }
.gen-step.done .gen-step-name { color: var(--s-done); }

.gen-bar-wrap { padding: 14px 0 0; flex-shrink: 0; }
.gen-bar { height: 6px; background: var(--sunk); border-radius: var(--r-pill); overflow: hidden; }
.gen-bar > i { display: block; height: 100%; width: 0; background: var(--brand); transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
.gen-bar-label { font-size: 0.72rem; color: var(--faint); margin-top: 6px; }

.gen-stream { flex: 1; min-height: 0; margin: 14px 0 0; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--canvas); display: flex; flex-direction: column; overflow: hidden; }
.gen-stream-head { padding: 9px 12px; border-bottom: 1px solid var(--line); font-size: 0.72rem; color: var(--faint); display: flex; align-items: center; gap: 7px; flex-shrink: 0; }
.gen-stream-body { flex: 1; overflow-y: auto; padding: 12px 14px; }
.gen-stream-body::-webkit-scrollbar { width: 4px; }
.gen-stream-body::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.08); border-radius: 4px; }

/* 「搜索课程资料」那两行（检索词 / 命中名单）。复用现有令牌，不引入新配色。 */
.gen-search-line { display: flex; align-items: flex-start; gap: 7px; padding: 5px 0; font-size: 0.76rem; color: var(--muted); line-height: 1.5; }
.gen-search-line > i { color: var(--brand); font-size: 0.7rem; margin-top: 3px; flex-shrink: 0; }
.gen-search-q { color: var(--ink); font-weight: 600; }
.gen-search-hit > i { color: var(--s-done); }
.gen-search-none { color: var(--faint); }

/* 「正在生成」的呼吸点 —— 代替 mockup 里那个闪烁光标 */
.gen-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); animation: genPulse 1.4s ease-in-out infinite; }
@keyframes genPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.btn-accent { background: linear-gradient(135deg, var(--brand) 0%, var(--purple) 100%); color: #fff; border: none; padding: 10px 22px; border-radius: 10px; cursor: pointer; font-size: 0.85rem; font-weight: 500; transition: all 0.2s; letter-spacing: 0.01em; }
.btn-accent:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(99,102,241,0.35); }
.btn-accent:disabled { opacity: 0.55; cursor: not-allowed; }

@media (max-width: 900px) {
    .split-panel { flex-direction: column; height: auto; }
    .split-panel-left { width: 100%; min-width: 0; border-right: none; padding-right: 0; border-bottom: 1px solid var(--line); padding-bottom: 16px; margin-bottom: 16px; max-height: 45vh; }
    .split-panel-right { padding-left: 0; max-height: 55vh; }
}

/* ========== 视频功能样式 ========== */

/* 视频网格 */
/* 必须自己撑满并滚动：父级 #kbMainContent 是 overflow:hidden，
   光有 padding 的话内容一超高就被裁掉、连滚动条都没有（视频全看不见）。
   同一个文件里 .kb-viewer-body 用的就是这套写法。 */
.video-grid-wrap { flex: 1; min-height: 0; overflow-y: auto; padding: 16px 20px; }
.video-grid-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.video-grid-header h3 { margin: 0; font-size: 1rem; font-weight: 650; color: var(--ink); }
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.video-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; cursor: pointer; transition: var(--transition); }
.video-card:hover { border-color: var(--brand); box-shadow: var(--sh); transform: translateY(-2px); }
.video-card-cover { width: 100%; aspect-ratio: 16/9; background: var(--canvas); position: relative; overflow: hidden; }
.video-card-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.video-card-cover .cover-placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 3rem; color: var(--brand-soft); }
.video-card-cover .source-badge { position: absolute; top: 8px; right: 8px; padding: 2px 8px; border-radius: 4px; font-size: .68rem; font-weight: 600; color: #fff; }
.video-card-cover .source-badge.BILIBILI { background: #fb7299; }
.video-card-cover .source-badge.LOCAL { background: var(--brand); }
.video-card-cover .play-icon-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,0); transition: background .2s; }
.video-card-cover .play-icon-overlay i { color: #fff; font-size: 2.5rem; opacity: 0; transform: scale(.8); transition: all .2s; text-shadow: 0 2px 8px rgba(0,0,0,.4); }
.video-card:hover .play-icon-overlay { background: rgba(0,0,0,.25); }
.video-card:hover .play-icon-overlay i { opacity: 1; transform: scale(1); }
.video-card-body { padding: 12px 14px; }
.video-card-body .video-card-title { font-weight: 650; font-size: .88rem; color: var(--ink); margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-card-body .video-card-subject { font-size: .72rem; color: var(--faint); margin-bottom: 6px; }
.video-card-body .video-card-stats { display: flex; gap: 14px; font-size: .74rem; color: var(--faint); }
.video-card-body .video-card-stats span { display: flex; align-items: center; gap: 3px; }
.video-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 60px 20px; color: var(--faint); gap: 12px; }
.video-empty i { font-size: 2.5rem; color: var(--line); }

/* 添加视频模态框 */
.video-add-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 900; display: flex; align-items: center; justify-content: center; }
.video-add-modal { background: var(--surface); border-radius: var(--r); width: 480px; max-width: 92vw; max-height: 85vh; overflow-y: auto; box-shadow: var(--sh); }
.video-add-modal-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--line); font-weight: 650; font-size: .95rem; color: var(--ink); }
.video-add-modal-close { background: none; border: none; cursor: pointer; color: var(--faint); font-size: 1.1rem; padding: 4px 8px; border-radius: 6px; }
.video-add-modal-close:hover { background: var(--canvas); color: var(--ink); }
.video-add-tabs { display: flex; border-bottom: 1px solid var(--line); padding: 0 20px; background: var(--canvas); }
.video-add-tab { padding: 8px 18px; font-size: .82rem; border: none; background: none; cursor: pointer; color: var(--faint); border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all .15s; }
.video-add-tab.active { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }
.video-add-modal-body { padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.video-add-modal-body label { font-size: .78rem; font-weight: 600; color: var(--ink); display: flex; flex-direction: column; gap: 4px; }
.video-add-modal-body input, .video-add-modal-body select, .video-add-modal-body textarea { width: 100%; padding: 8px 12px; border: 1.5px solid var(--line); border-radius: 8px; font-size: .84rem; background: var(--canvas); color: var(--ink); outline: none; box-sizing: border-box; font-family: inherit; }
.video-add-modal-body input:focus, .video-add-modal-body textarea:focus { border-color: var(--brand); }
.video-add-modal-body textarea { resize: vertical; min-height: 60px; }
.video-add-modal-footer { display: flex; justify-content: flex-end; gap: 8px; padding: 16px 20px; border-top: 1px solid var(--line); }

/* 视频播放器覆盖层 */
.video-player-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.88); z-index: 1000; display: flex; align-items: center; justify-content: center; animation: fadeIn .2s; }
.video-player-container { display: flex; width: 95vw; max-width: 1400px; height: 88vh; background: var(--surface); border-radius: var(--r); overflow: hidden; }
.video-main-area { flex: 1; display: flex; flex-direction: column; background: #000; position: relative; min-width: 0; }
.video-main-area iframe, .video-main-area video { flex: 1; width: 100%; border: none; }
.video-main-area .bilibili-hint { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #fff; gap: 12px; background: rgba(0,0,0,.7); }
.video-main-area .bilibili-hint a { color: #fb7299; font-weight: 600; }
.video-close-btn { position: absolute; top: 12px; right: 12px; z-index: 10; width: 36px; height: 36px; border-radius: 50%; border: none; background: rgba(0,0,0,.5); color: #fff; cursor: pointer; font-size: 1rem; display: flex; align-items: center; justify-content: center; transition: background .15s; }
.video-close-btn:hover { background: rgba(255,255,255,.25); }

/* 自定义视频控制条 */
.video-controls-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: #1a1a1a; color: #ccc; font-size: .8rem; }
.video-controls-bar button { background: none; border: none; color: #ccc; cursor: pointer; font-size: .9rem; padding: 4px 6px; border-radius: 4px; display: flex; align-items: center; }
.video-controls-bar button:hover { color: #fff; }
.video-controls-bar input[type="range"] { -webkit-appearance: none; appearance: none; height: 4px; border-radius: 2px; background: #555; outline: none; cursor: pointer; }
.video-controls-bar input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 13px; height: 13px; border-radius: 50%; background: var(--brand); cursor: pointer; }
.video-progress-bar { flex: 1; }
.video-time-display { font-size: .76rem; font-variant-numeric: tabular-nums; color: #aaa; white-space: nowrap; }
.video-speed-select { background: #333; color: #ccc; border: 1px solid #555; border-radius: 4px; padding: 3px 6px; font-size: .76rem; cursor: pointer; outline: none; }
.video-speed-select:focus { border-color: var(--brand); }
.video-volume-slider { width: 70px; }

/* 右侧面板 */
.video-side-panel { width: 360px; display: flex; flex-direction: column; border-left: 1px solid var(--line); background: var(--canvas); overflow-y: auto; }
.video-info-section { padding: 16px 18px; border-bottom: 1px solid var(--line); }
.video-info-section .video-title { font-size: 1.05rem; font-weight: 700; color: var(--ink); margin: 0 0 6px; }
.video-info-section .video-desc { font-size: .82rem; color: var(--muted); line-height: 1.6; margin-bottom: 10px; }
.video-info-section .video-meta-row { display: flex; gap: 16px; font-size: .78rem; color: var(--faint); margin-bottom: 10px; }
.video-info-section .video-meta-row span { display: flex; align-items: center; gap: 4px; }
.btn-like-video { display: flex; align-items: center; gap: 6px; padding: 8px 18px; border: 1.5px solid var(--line); border-radius: 20px; background: var(--surface); cursor: pointer; font-size: .82rem; color: var(--ink); transition: all .15s; }
.btn-like-video:hover { border-color: var(--red); background: var(--red-soft); }
.btn-like-video.liked { border-color: var(--red); background: var(--red-soft); color: var(--red); }
.btn-like-video.liked i { font-weight: 900; }

/* 评论区 */
.video-comments-section { flex: 1; padding: 14px 18px; display: flex; flex-direction: column; }
.video-comments-section h4 { margin: 0 0 12px; font-size: .88rem; font-weight: 650; color: var(--ink); }
.comment-list { flex: 1; display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; overflow-y: auto; }
.comment-item { display: flex; gap: 10px; padding: 10px 12px; background: var(--surface); border-radius: 10px; border: 1px solid var(--line); }
.comment-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--brand-soft); display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--brand); font-size: .8rem; }
.comment-body { flex: 1; min-width: 0; }
.comment-body .comment-user { font-size: .78rem; font-weight: 650; color: var(--ink); }
.comment-body .comment-content { font-size: .82rem; color: var(--muted); line-height: 1.5; margin-top: 2px; word-break: break-word; }
.comment-body .comment-time { font-size: .7rem; color: var(--faint); margin-top: 4px; }
.comment-input-wrap { display: flex; gap: 8px; align-items: center; }
.comment-input-wrap input { flex: 1; padding: 8px 12px; border: 1.5px solid var(--line); border-radius: 20px; font-size: .82rem; background: var(--surface); color: var(--ink); outline: none; }
.comment-input-wrap input:focus { border-color: var(--brand); }
.comment-input-wrap button { padding: 8px 16px; border-radius: 20px; border: none; background: var(--brand); color: #fff; cursor: pointer; font-size: .8rem; font-weight: 600; white-space: nowrap; transition: all .15s; }
.comment-input-wrap button:hover { background: var(--brand-hover); }
.comment-empty { text-align: center; color: var(--faint); font-size: .8rem; padding: 20px; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }


/* ================================================================
   B · 原先内嵌在 js/main.js 的样式（已抽离）
   ================================================================ */
/* ===== AI 画像构建（原 main.js:3205 内嵌） ===== */
        .pc-wrap{display:grid;grid-template-columns:1fr 360px;gap:20px;height:100%}
        .pc-chat{display:flex;flex-direction:column;border-radius:14px;background:var(--surface);border:1px solid var(--line);overflow:hidden}
        .pc-chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:14px;background:var(--canvas)}
        .pc-chat-messages::-webkit-scrollbar{width:4px}
        .pc-chat-messages::-webkit-scrollbar-thumb{background:var(--brand-soft);border-radius:2px}
        .pc-panel{display:flex;flex-direction:column;gap:16px}
        .pc-radar-card{border-radius:14px;background:var(--surface);border:1px solid var(--line);padding:16px;text-align:center}
        .pc-radar-card h4{margin:0 0 12px;font-size:.9rem;color:var(--ink)}
        /* 一行四段：维度名 | 评分 | 进度条 | 了解程度。
           评分是主角（数字 + 条），了解程度是配角（纯文字，不占条）。
           四段都用固定宽度 + tabular-nums，保证多行之间数字对齐。 */
        .pc-dims{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto}
        .pc-dim{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:8px;background:var(--canvas);font-size:.78rem}
        .pc-dim-label{width:60px;flex-shrink:0;font-weight:600;color:var(--ink);font-size:.75rem}
        .pc-dim-score{width:70px;flex-shrink:0;font-size:.74rem;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}
        /* 置信度不足或老数据没分数时：灰掉，明确表示「暂不评价」而不是 0 分 */
        .pc-dim-score.is-pending{color:var(--faint);font-weight:400}
        .pc-dim-bar{flex:1;min-width:0;height:8px;border-radius:4px;background:var(--line);overflow:hidden}
        .pc-dim-bar-fill{height:100%;border-radius:4px;transition:width .5s}
        .pc-dim-conf{width:70px;flex-shrink:0;text-align:right;font-size:.72rem;color:var(--faint);font-variant-numeric:tabular-nums}
        .pc-start-overlay{cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--faint);gap:16px;transition:all .3s;border-radius:10px}
        .pc-start-overlay:hover{background:var(--brand-tint);color:var(--brand)}
        .pc-start-avatar{width:72px;height:72px;border-radius:50%;background:var(--logo-gradient);display:flex;align-items:center;justify-content:center;font-size:2rem;color:#fff;box-shadow:0 8px 24px color-mix(in srgb, var(--brand) 30%, transparent)}
        .pc-start-hint{font-size:.78rem;opacity:.6}
        .pc-restart-btn{display:flex;align-items:center;gap:5px;padding:5px 10px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--faint);font-size:.72rem;cursor:pointer;transition:all .2s;white-space:nowrap;margin-left:auto;flex-shrink:0}
        .pc-restart-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-tint)}
        @media(max-width:768px){.pc-wrap{grid-template-columns:1fr}.pc-panel{display:none}}

/* ===== 学习路径 · 总结报告（原 main.js:3337 内嵌） ===== */
            @keyframes fadeIn{from{opacity:0}to{opacity:1}}
            @keyframes scaleIn{from{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}
            @keyframes dotBlink{0%,100%{opacity:.35;transform:scale(1)}50%{opacity:1;transform:scale(1.35)}}
            @keyframes cardGlow{0%,100%{box-shadow:inset 0 0 0 0 var(--brand)}50%{box-shadow:inset 0 0 0 1px var(--brand)}}
            .rp-card{
                background:rgba(255,255,255,.92);border:1.5px solid rgba(198,123,92,.15);
                border-radius:14px;padding:16px 18px;display:flex;align-items:center;gap:12px;
                transition:all .5s cubic-bezier(.4,0,.2,1);opacity:.45;
                position:relative;overflow:hidden;
                box-shadow:0 2px 8px rgba(61,46,40,.04),0 1px 2px rgba(61,46,40,.03);
            }
            .rp-card::after{
                content:'';position:absolute;inset:0;border-radius:inherit;
                background:linear-gradient(160deg,rgba(255,255,255,.5) 0%,transparent 30%,transparent 70%,rgba(0,0,0,.02) 100%);
                pointer-events:none;
            }
            .rp-card.active{
                opacity:1;border-color:var(--brand);
                box-shadow:0 0 0 4px color-mix(in srgb,color-mix(in srgb, var(--brand) 7%, transparent)%,transparent),
                           0 8px 24px rgba(61,46,40,.08),0 2px 4px rgba(61,46,40,.04);
                transform:translateY(-2px);
                animation:cardGlow 3s ease-in-out infinite;
            }
            .rp-card.pulse{
                animation:cardGlow 1.5s ease-in-out infinite;
            }
            .rp-card.done{
                opacity:1;border-color:var(--green);
                background:rgba(91,154,110,.06);
                box-shadow:0 0 0 4px rgba(91,154,110,.08),0 4px 16px rgba(91,154,110,.06);
            }
            .rp-card.done::after{background:none}
            .rp-card.error{
                opacity:1;border-color:var(--red);
                background:rgba(224,85,85,.04);
                box-shadow:0 0 0 4px rgba(224,85,85,.06);
            }
            .rp-card .r-icon{
                width:42px;height:42px;border-radius:12px;
                display:flex;align-items:center;justify-content:center;
                font-size:1.05rem;flex-shrink:0;transition:all .4s;
                background:color-mix(in srgb,color-mix(in srgb, var(--brand) 6%, transparent)%,transparent);
                color:var(--brand);
            }
            .rp-card.active .r-icon{
                transform:scale(1.08);
                background:var(--brand);color:#fff;
                box-shadow:0 4px 14px color-mix(in srgb,color-mix(in srgb, var(--brand) 21%, transparent)%,transparent);
            }
            .rp-card.done .r-icon{
                background:var(--green);color:#fff;
                box-shadow:0 4px 14px rgba(91,154,110,.25);
            }
            .rp-card .r-dot{
                width:9px;height:9px;border-radius:50%;
                background:rgba(198,123,92,.15);flex-shrink:0;
                transition:all .4s;
            }
            .rp-card.active .r-dot{
                background:var(--brand);animation:dotBlink .9s infinite;
            }
            .rp-card.done .r-dot{
                background:var(--green);animation:none;
                box-shadow:0 0 8px rgba(91,154,110,.4);
            }
            .rp-card.error .r-dot{background:var(--red);animation:none}
            .rp-card .r-info{flex:1;min-width:0}
            .rp-card .r-name{font-size:.82rem;font-weight:650;color:var(--ink);transition:color .3s}
            .rp-card.done .r-name{color:var(--green)}
            .rp-card .r-desc{font-size:.68rem;color:var(--muted);margin-top:2px;transition:color .3s}
            .rp-card.done .r-desc{color:rgba(91,154,110,.7)}

/* ===== 学习路径（原 main.js:2021 内嵌） ===== */
        .path-wrap{display:flex;gap:20px;height:100%}
        .path-list{width:280px;flex-shrink:0;overflow-y:auto;display:flex;flex-direction:column;gap:8px}
        .path-card{display:flex;align-items:center;gap:10px;padding:14px;border-radius:10px;background:var(--surface);border:1.5px solid var(--line);cursor:pointer;transition:all .2s}
        .path-card:hover,.path-card.active{border-color:var(--brand);box-shadow:0 2px 8px rgba(99,102,241,.08)}
        .path-card.active{border-left:3px solid var(--brand);background:var(--brand-tint)}
        .path-progress{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;flex-shrink:0}
        .path-progress.active{background:var(--brand);color:#fff}
        .path-progress.completed{background:var(--s-done);color:#fff}
        .path-progress.paused{background:var(--s-doing);color:#fff}
        .path-main{flex:1;display:flex;flex-direction:column;min-width:0;border-radius:14px;background:var(--surface);border:1px solid var(--line);overflow:hidden}
        .path-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--faint);gap:12px}
        .path-timeline{flex:1;overflow-y:auto;padding:24px 28px}
        .path-node{display:flex;gap:16px;position:relative;padding-bottom:24px}
        .path-node::before{content:'';position:absolute;left:19px;top:42px;bottom:0;width:2px;background:var(--line)}
        .path-node:last-child::before{display:none}
        .path-node-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;flex-shrink:0;z-index:1}
        .path-node-icon.done{background:var(--s-done);color:#fff}
        .path-node-icon.current{background:var(--brand);color:#fff;box-shadow:0 0 0 4px var(--brand-tint)}
        .path-node-icon.pending{background:var(--line);color:var(--faint)}
        .path-node-content{flex:1;min-width:0}
        .path-node-title{font-weight:650;font-size:.88rem;color:var(--ink)}
        .path-node-desc{font-size:.78rem;color:var(--faint);margin-top:2px}
        .path-node-reason{font-size:.75rem;color:var(--amber);margin-top:6px;padding:6px 10px;background:var(--amber-soft);border-left:3px solid var(--s-doing);border-radius:4px;line-height:1.5}
        .path-node-meta{display:flex;gap:12px;margin-top:6px;font-size:.72rem;color:var(--faint)}
        /* 推荐资料：从「一排小标签」改成条目 —— 每条带一行「为什么推荐它」
           （理由只能从现有数据推导：资料自身的学科/难度 + 本节点要覆盖的主题） */
        .path-node-resources{display:flex;flex-direction:column;gap:6px;margin-top:10px}
        .path-resource-item{
            display:grid;grid-template-columns:14px minmax(0,1fr);column-gap:8px;row-gap:2px;
            align-items:center;width:100%;text-align:left;font:inherit;
            border:1px solid var(--line);background:var(--surface);
            border-radius:8px;padding:8px 10px;cursor:pointer;transition:var(--transition);
        }
        .path-resource-item > i{grid-row:1 / span 2;font-size:.72rem;color:var(--faint)}
        .path-resource-item .pri-title{font-size:.78rem;font-weight:600;color:var(--ink);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .path-resource-item .pri-why{font-size:.7rem;color:var(--faint);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .path-resource-item:hover{border-color:var(--brand);background:var(--brand-tint)}
        .path-resource-item:hover .pri-title{color:var(--brand)}
        /* 不在资料库里的：不可点、也不给 hover 反馈，避免「看着能点其实打不开」 */
        .path-resource-item.off{cursor:default;background:var(--canvas);border-style:dashed}
        .path-resource-item.off:hover{border-color:var(--line);background:var(--canvas)}
        .path-resource-item.off .pri-title{color:var(--muted);font-weight:500}
        .path-resource-item.off:hover .pri-title{color:var(--muted)}
        /* 类型只染图标 —— 整条染色会让一屏里六种颜色互相打架 */
        .path-resource-item.mindmap > i{color:var(--brand)}
        .path-resource-item.video > i{color:var(--purple)}
        .path-resource-item.quiz > i{color:var(--s-doing)}
        .path-resource-item.lecture > i{color:var(--s-done)}
        .path-resource-item.code > i{color:var(--purple)}
        .path-actions{display:flex;justify-content:flex-end;gap:8px;padding:12px 20px;border-top:1px solid var(--line);background:var(--canvas)}
        .ai-progress-steps{display:flex;flex-direction:column;gap:8px;margin:12px 0}
        .ai-progress-step{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--faint)}
        .ai-progress-step.done{color:var(--brand)}
        .ai-progress-step.loading{color:var(--ink)}
        .ai-progress-dot{width:8px;height:8px;border-radius:50%;background:var(--line)}
        .ai-progress-step.done .ai-progress-dot{background:var(--brand)}
        .ai-progress-step.loading .ai-progress-dot{background:var(--brand);animation:pulse 1s infinite}
        .ai-progress-step.error{color:var(--s-overdue)}
        .ai-progress-step.error .ai-progress-dot{background:var(--s-overdue)}
        @keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}

/* ===== 智能辅导（原 main.js:1439 内嵌） ===== */
            .tutoring-redirect{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;gap:20px}
            .tutoring-redirect .hero-icon{width:88px;height:88px;border-radius:50%;background:var(--logo-gradient);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 32px rgba(99,102,241,.25)}
            .tutoring-redirect .hero-icon i{font-size:40px;color:#fff}
            .tutoring-redirect h2{margin:0;font-size:1.5rem;font-weight:700;color:var(--ink)}
            .tutoring-redirect .desc{color:var(--faint);font-size:.9rem;max-width:420px;line-height:1.7}
            .tutoring-redirect .feature-list{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:480px}
            .tutoring-redirect .feature-tag{padding:6px 14px;border-radius:20px;background:var(--brand-tint);color:var(--brand);font-size:.8rem;font-weight:500}
            .tutoring-redirect .btn-open{padding:12px 32px;border-radius:10px;background:var(--logo-gradient);color:#fff;border:none;font-size:.95rem;font-weight:600;cursor:pointer;box-shadow:0 4px 16px rgba(99,102,241,.3);transition:transform .15s,box-shadow .15s}
            .tutoring-redirect .btn-open:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(99,102,241,.4)}
            .tutoring-redirect .hint{font-size:.78rem;color:var(--faint);display:flex;align-items:center;gap:6px}
            .tutoring-redirect .hint .arrow{border:1.5px solid var(--line);border-radius:6px;padding:2px 8px;font-size:.72rem;background:var(--canvas)}

/* ===== 模拟面试（原 main.js:3575 内嵌） ===== */
            .interview-wrap{display:flex;gap:16px;height:100%}
            .interview-main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--surface);border-radius:14px;overflow:hidden}
            .interview-side{width:220px;flex-shrink:0;display:flex;flex-direction:column;gap:12px}
            .interview-chat{flex:1;overflow-y:auto;padding:20px 24px;display:flex;flex-direction:column;gap:16px}
            .interview-msg{display:flex;gap:10px;max-width:85%}
            .interview-msg.interviewer{align-self:flex-start}
            .interview-msg.user{align-self:flex-end;flex-direction:row-reverse}
            .interview-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:16px}
            .interview-msg.interviewer .interview-avatar{background:var(--brand-tint);color:var(--brand)}
            .interview-msg.user .interview-avatar{background:var(--logo-gradient);color:#fff}
            .interview-bubble{padding:10px 14px;border-radius:12px;font-size:.875rem;line-height:1.6;word-break:break-word}
            .interview-msg.interviewer .interview-bubble{background:var(--canvas);border-top-left-radius:4px}
            .interview-msg.user .interview-bubble{background:var(--brand-tint);color:var(--brand);border-top-right-radius:4px}
            .interview-input-wrap{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line);background:var(--canvas)}
            .interview-input-wrap input{flex:1;padding:10px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:.875rem;background:var(--surface);color:var(--ink);outline:none;transition:border-color .2s}
            .interview-input-wrap input:focus{border-color:var(--brand)}
            .interview-input-wrap button{padding:10px 20px;background:var(--logo-gradient);color:#fff;border:none;border-radius:10px;font-weight:600;cursor:pointer;font-size:.875rem;white-space:nowrap;transition:opacity .2s}
            .interview-input-wrap button:disabled{opacity:.5;cursor:not-allowed}
            .interview-input-wrap .btn-mic{width:42px;height:42px;padding:0;border-radius:50%;background:var(--canvas);color:var(--faint);border:1.5px solid var(--line);cursor:pointer;font-size:1rem;transition:all .25s;flex-shrink:0;display:flex;align-items:center;justify-content:center}
            .interview-input-wrap .btn-mic:hover{color:var(--brand);border-color:var(--brand)}
            .interview-input-wrap .btn-mic.recording{color:#fff;background:var(--s-overdue);border-color:var(--s-overdue);animation:micPulse 1.2s infinite}
            .interview-input-wrap .btn-mic:disabled{opacity:.5;cursor:not-allowed}
            .interview-input-wrap .btn-mic.recording:disabled{animation:none;opacity:.7}
            @keyframes micPulse{0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,.5)}50%{box-shadow:0 0 0 8px rgba(239,68,68,0)}}
            .interview-side .setup-card{background:var(--surface);border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:12px}
            .interview-side .setup-card h4{margin:0;font-size:.9rem;font-weight:650;color:var(--ink)}
            .interview-side .setup-card p{font-size:.78rem;color:var(--faint);margin:0;line-height:1.6}
            .interview-side .btn-start{padding:10px;border-radius:10px;border:none;font-weight:600;cursor:pointer;font-size:.875rem;background:var(--logo-gradient);color:#fff;transition:opacity .2s}
            .interview-side .btn-start:disabled{opacity:.5;cursor:not-allowed}
            .interview-side .btn-end{padding:10px;border-radius:10px;border:1.5px solid var(--s-overdue);font-weight:600;cursor:pointer;font-size:.875rem;background:transparent;color:var(--s-overdue);transition:all .2s}
            .interview-side .btn-end:hover{background:var(--red-soft)}
            .interview-progress{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--faint)}
            .interview-progress-bar{flex:1;height:4px;background:var(--line);border-radius:2px;overflow:hidden}
            .interview-progress-fill{height:100%;background:var(--brand);border-radius:2px;transition:width .3s}
            .interview-eval-card{margin:0 24px 12px;padding:16px;border-radius:12px;background:linear-gradient(135deg,var(--brand-tint),var(--amber-soft));border:1.5px solid var(--brand)}
            .interview-eval-card h4{margin:0 0 10px;font-size:.95rem;color:var(--brand)}
            .interview-eval-card .eval-detail{margin-top:8px;font-size:.8rem;line-height:1.7;color:var(--muted);white-space:pre-wrap}
            .interview-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;color:var(--faint);gap:12px}
            .interview-empty i{font-size:48px;opacity:.3}
            .interview-typing{display:flex;align-items:center;gap:4px;padding:4px 0}
            .interview-typing span{width:6px;height:6px;border-radius:50%;background:var(--faint);animation:typingBounce 1.4s infinite}
            .interview-typing span:nth-child(2){animation-delay:.2s}
            .interview-typing span:nth-child(3){animation-delay:.4s}
            @keyframes typingBounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}

/* ===== 系统配置（原 main.js:3851 内嵌） ===== */
        .config-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
        .config-item{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:12px;background:var(--surface);border:1px solid var(--line);transition:all .2s}
        .config-item:hover{border-color:var(--brand)}
        .config-item-icon{width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;background:var(--brand-tint);color:var(--brand);flex-shrink:0}
        .config-item-main{flex:1;min-width:0}
        .config-item-label{font-size:.75rem;color:var(--faint)}
        .config-item-value{font-weight:650;font-size:.88rem;margin-top:2px;word-break:break-all}
        .config-item-actions{display:flex;gap:6px;flex-shrink:0}

/* ===== 课程资料（原 main.js:1242 内嵌） ===== */
        /* 左栏目录树可收起。宽度与右边距一起过渡（原来用 gap，gap 加收起态不可靠，改成 margin-right）。
           注意 280 / 290 是配对的两个数 —— 改侧栏宽度时同步改 .kb-collapse-handle 的 left。 */
        .kb-wrap{position:relative;display:flex;height:100%}
        .kb-sidebar{width:280px;margin-right:20px;flex-shrink:0;min-height:0;overflow:hidden;display:flex;flex-direction:column;gap:8px;transition:width .28s cubic-bezier(.4,0,.2,1),margin-right .28s cubic-bezier(.4,0,.2,1)}
        .kb-wrap.kb-immersive .kb-sidebar{width:0;margin-right:0}
        /* 分隔线上的悬浮把手。用一条透明的「感应带」决定显隐 —— 鼠标靠到分隔线附近才出现，
           而不是进了整块区域就常驻（那样读正文时一直有个圆点压在字边上）。 */
        .kb-collapse-zone{position:absolute;top:0;bottom:0;left:278px;width:24px;z-index:4;transition:left .28s cubic-bezier(.4,0,.2,1)}
        .kb-wrap.kb-immersive .kb-collapse-zone{left:-12px}
        .kb-collapse-handle{position:absolute;top:50%;left:290px;transform:translate(-50%,-50%);z-index:5;width:22px;height:22px;padding:0;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--faint);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.6rem;opacity:0;transition:opacity .2s,left .28s cubic-bezier(.4,0,.2,1),background .2s,color .2s,border-color .2s}
        /* 收起后常驻半透明，否则找不到怎么展开 */
        .kb-wrap.kb-immersive .kb-collapse-handle{left:0;opacity:.45}
        /* 显形规则必须排在上面两条【之后】：特指度同为 (0,3,0) 时靠源码顺序取胜。
           把手自身也得在列 —— 它 z-index 高于感应带又压在带子正中，
           鼠标其实落在把手上，只写感应带会导致「看不见 → 挡住带子 → 永不显形」死锁。 */
        .kb-wrap .kb-collapse-zone:hover~.kb-collapse-handle,
        .kb-wrap .kb-collapse-handle:hover,
        .kb-wrap .kb-collapse-handle:focus-visible{opacity:1}
        .kb-collapse-handle:hover{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}
        /* ── 两级目录树（大类 → 学科 → 资料）── */
        .kb-search{position:relative;display:flex;align-items:center;flex-shrink:0}
        .kb-search .fa-search{position:absolute;left:10px;font-size:.76rem;color:var(--faint);pointer-events:none}
        .kb-search input{width:100%;padding:8px 30px;border:1px solid var(--line);border-radius:8px;font-size:.82rem;background:var(--surface);color:var(--ink);outline:none;transition:border-color var(--transition)}
        .kb-search input:focus{border-color:var(--brand)}
        .kb-search #kbSearchClear{position:absolute;right:5px;border:none;background:none;color:var(--faint);cursor:pointer;padding:4px 7px;font-size:.76rem}
        .kb-tree{flex:1;overflow-y:auto;overflow-x:hidden;min-height:0;padding-right:4px}
        .kb-group{margin-bottom:2px}
        .kb-group-head,.kb-sub{display:flex;align-items:center;gap:7px;width:100%;border:none;background:none;cursor:pointer;text-align:left;color:var(--ink);border-radius:7px;transition:background var(--transition)}
        .kb-group-head{padding:7px 8px;font-size:.82rem;font-weight:600}
        .kb-sub{padding:6px 8px 6px 22px;font-size:.8rem;color:var(--muted)}
        .kb-group-head:hover,.kb-sub:hover{background:var(--canvas)}
        .kb-group-head i,.kb-sub i{font-size:.68rem;color:var(--faint);width:10px;flex-shrink:0}
        .kb-group-head>span:first-of-type,.kb-sub>span:first-of-type{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .kb-count{font-size:.68rem;color:var(--faint);font-weight:400;flex-shrink:0}
        .kb-docs{padding:1px 0 3px}
        .kb-doc{display:block;width:100%;text-align:left;border:none;background:none;cursor:pointer;padding:6px 8px 6px 40px;font-size:.79rem;color:var(--muted);border-radius:7px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:background var(--transition),color var(--transition)}
        .kb-doc:hover{background:var(--canvas);color:var(--ink)}
        .kb-doc.active{background:var(--brand-tint);color:var(--brand);font-weight:600}
        /* 语义搜索结果卡片 */
        .kb-hit{display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;border:none;background:none;cursor:pointer;padding:8px 9px;border-radius:8px;transition:background var(--transition)}
        .kb-hit:hover{background:var(--canvas)}
        .kb-hit.active{background:var(--brand-tint)}
        .kb-hit-head{display:flex;align-items:baseline;gap:6px}
        .kb-hit-title{flex:1;font-size:.79rem;font-weight:600;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .kb-hit-score{font-size:.66rem;color:var(--faint);flex-shrink:0;font-variant-numeric:tabular-nums}
        .kb-hit-sub{font-size:.68rem;color:var(--faint)}
        .kb-hit-snippet{font-size:.71rem;color:var(--muted);line-height:1.45;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .kb-hint{padding:10px 8px;font-size:.76rem;color:var(--faint)}
        .kb-breadcrumb{display:flex;align-items:center;gap:6px;font-size:.72rem;color:var(--faint);margin-bottom:4px}
        .kb-breadcrumb i{font-size:.6rem}
        .kb-breadcrumb-cur{color:var(--muted)}
        .kb-add-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;border-radius:9px;border:1.5px dashed var(--line);color:var(--faint);cursor:pointer;background:transparent;width:100%;font-size:.8rem;flex-shrink:0;white-space:nowrap;transition:var(--transition)}
        .kb-add-btn:hover{border-color:var(--brand);color:var(--brand)}
        /* 「视频资源」tab 里，资料正文附带的链接 */
        .kb-links{margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid var(--line)}
        .kb-links-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:10px}
        .kb-links-head h3{margin:0;font-size:.92rem}
        .kb-links-head span{font-size:.72rem;color:var(--faint)}
        .kb-links-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:8px}
        .kb-link-card{display:flex;align-items:center;gap:9px;padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);text-decoration:none;transition:var(--transition);min-width:0}
        .kb-link-card:hover{border-color:var(--brand);background:var(--brand-tint)}
        .kb-link-card i{color:var(--brand);font-size:.9rem;flex-shrink:0}
        .kb-link-label{font-size:.79rem;font-weight:600;color:var(--ink);flex-shrink:0}
        .kb-link-host{font-size:.7rem;color:var(--faint);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
        .kb-add-upload{border-color:var(--brand);color:var(--brand)}
        .kb-main{flex:1;display:flex;flex-direction:column;min-width:0;border-radius:14px;background:var(--surface);border:1px solid var(--line);overflow:hidden}
        #kbMainContent{flex:1;display:flex;flex-direction:column;overflow:hidden}
        .kb-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--faint);gap:12px}
        .kb-viewer{flex:1;display:flex;flex-direction:column;overflow:hidden}
        .kb-viewer-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);background:var(--canvas)}
        .kb-viewer-body{flex:1;overflow-y:auto;padding:24px 28px}
        .kb-editor{display:flex;flex-direction:column;height:100%;overflow:hidden}
        .kb-meta-bar{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;padding:16px 20px;border-bottom:1px solid var(--line);background:var(--canvas)}
        .kb-meta-field{display:flex;flex-direction:column;gap:2px}
        .kb-meta-field label{font-size:.7rem;color:var(--faint);font-weight:500}
        .kb-meta-field input,.kb-meta-field select{padding:6px 10px;border:1px solid var(--line);border-radius:6px;font-size:.84rem;background:var(--surface);color:var(--ink);outline:none}
        .kb-tabs{display:flex;border-bottom:1px solid var(--line);padding:0 20px;background:var(--canvas)}
        .kb-tab{padding:8px 16px;font-size:.8rem;border:none;background:none;cursor:pointer;color:var(--faint);border-bottom:2px solid transparent;margin-bottom:-1px}
        .kb-tab.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}
        .kb-content-area{flex:1;overflow-y:auto;padding:20px}
        .kb-content-area textarea{width:100%;height:100%;min-height:300px;border:none;outline:none;resize:none;font-family:Consolas,Monaco,monospace;font-size:.84rem;line-height:1.7;color:var(--ink);background:transparent}
        .kb-preview{font-size:.84rem;line-height:1.7}
        .kb-actions{display:flex;justify-content:flex-end;gap:8px;padding:12px 20px;border-top:1px solid var(--line);background:var(--canvas)}
        .md-table-wrap{overflow-x:auto;margin:12px 0;border-radius:8px;border:1px solid var(--line)}
        .md-table{width:100%;border-collapse:collapse;font-size:.82rem}
        .md-table th{background:var(--brand);color:#fff;padding:10px 14px;text-align:left;font-weight:600;white-space:nowrap}
        .md-table td{padding:9px 14px;border-bottom:1px solid var(--line)}
        .md-table tbody tr:nth-child(even){background:var(--canvas)}
        .md-table tbody tr:hover{background:var(--brand-tint)}
        .hidden{display:none}

/* ===== 资源工坊（原 main.js:1481 内嵌） ===== */
        .rgen-wrap{display:flex;gap:16px;height:100%}
        .rgen-left{width:300px;flex-shrink:0;display:flex;flex-direction:column;gap:10px}
        .rgen-right{flex:1;display:flex;flex-direction:column;gap:10px;min-width:0}
        .rgen-agents-row{flex:1;display:flex;gap:12px;min-height:0}
        .rgen-planner-panel{border-radius:10px;background:var(--surface);border:1.5px solid var(--brand);overflow:hidden;flex-shrink:0}
        .rgen-planner-header{display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--brand-tint);font-size:.78rem;font-weight:650;color:var(--brand)}
        .rgen-planner-body{padding:10px 14px;font-size:.76rem;line-height:1.6;max-height:140px;overflow-y:auto;color:var(--ink);word-break:break-word}
        .rgen-planner-body .planner-subject{display:inline-block;padding:1px 8px;border-radius:6px;font-size:.7rem;background:var(--brand-tint);color:var(--brand);margin-right:6px}
        .rgen-planner-body .planner-label{font-weight:600;color:var(--faint);font-size:.7rem}
        .rgen-planner-body .planner-prompt{background:var(--canvas);padding:6px 10px;border-radius:6px;margin:4px 0;font-size:.74rem;color:var(--faint);border:1px solid var(--line)}
        .rgen-panel{border-radius:12px;background:var(--surface);border:1px solid var(--line);padding:14px}
        .rgen-panel-title{font-weight:650;font-size:.85rem;margin-bottom:10px;display:flex;align-items:center;gap:6px}
        .rgen-field{display:flex;flex-direction:column;gap:4px;margin-bottom:8px}
        .rgen-field label{font-size:.76rem;font-weight:600;color:var(--ink)}
        .rgen-field input,.rgen-field select,.rgen-field textarea{width:100%;padding:7px 10px;border:1.5px solid var(--line);border-radius:8px;font-size:.8rem;background:var(--canvas);color:var(--ink);outline:none;box-sizing:border-box;font-family:inherit}
        .rgen-field textarea{resize:vertical;min-height:64px}
        .rgen-field input:focus,.rgen-field select:focus,.rgen-field textarea:focus{border-color:var(--brand)}
        .rgen-field-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
        .rgen-quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
        .rgen-quick-btn{padding:8px 6px;border-radius:8px;border:1.5px solid var(--line);background:var(--canvas);cursor:pointer;font-size:.72rem;text-align:left;transition:all .15s;color:var(--ink);display:flex;align-items:center;gap:4px}
        .rgen-quick-btn:hover{border-color:var(--brand);background:var(--brand-tint)}
        .rgen-results-row{flex:1;display:flex;gap:12px;min-height:0}
        .rgen-quiz-col{flex:7;display:flex;flex-direction:column;min-width:0;border-radius:12px;background:var(--surface);border:1px solid var(--line);overflow:hidden}
        .rgen-doc-gen-col{flex:3;display:flex;flex-direction:column;min-width:0;border-radius:12px;background:var(--surface);border:1px solid var(--line);overflow:hidden;transition:all .4s cubic-bezier(.4,0,.2,1)}
        .rgen-doc-gen-col.expanded{border-color:var(--brand);box-shadow:0 0 28px rgba(26,86,219,.18);transform:scale(1.02) translateY(-2px)}
        .rgen-result-header{padding:10px 16px;border-bottom:1px solid var(--line);background:var(--canvas);display:flex;align-items:center;justify-content:space-between;font-weight:650;font-size:.82rem}
        .rgen-result-body{flex:1;overflow-y:auto;padding:16px;font-size:.82rem;line-height:1.7;word-break:break-word}
        .rgen-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--faint);gap:10px;font-size:.82rem}
        .rgen-loading{display:flex;align-items:center;gap:8px;color:var(--faint);font-size:.8rem;padding:12px 16px}
        @keyframes rgenSpin{to{transform:rotate(360deg)}}
        .rgen-spin{animation:rgenSpin .8s linear infinite}
        .rgen-done-icon{color:var(--s-done);font-size:1.5rem}
        .rgen-doc-download{padding:10px 16px;margin:6px 12px;border-radius:8px;background:var(--green-soft);border:1.5px solid var(--s-done);display:flex;align-items:center;justify-content:space-between;font-size:.82rem}
        .rgen-doc-download a{color:var(--brand);font-weight:600;text-decoration:none}
        .rgen-doc-download a:hover{text-decoration:underline}
        .rgen-error{color:var(--red);padding:12px 16px;font-size:.8rem}
        .rgen-quiz-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:10px;font-size:.7rem;background:rgba(245,158,11,.15);color:var(--s-doing)}
        .rgen-doc-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:10px;font-size:.7rem;background:rgba(16,185,129,.15);color:var(--s-done)}
        .rgen-agent-card.generating{border-color:var(--brand)!important;box-shadow:0 0 24px rgba(26,86,219,.25)!important;transform:scale(1.04)!important;opacity:1!important;cursor:default!important}
        .rgen-agent-cards-row{display:flex;gap:10px;flex-shrink:0}
        .rgen-agent-card{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:18px 12px;border-radius:12px;background:var(--surface);border:2px solid var(--line);transition:all .2s;cursor:pointer;text-align:center;min-height:130px}
        .rgen-agent-card:hover{border-color:var(--brand);box-shadow:0 4px 16px rgba(26,86,219,.12);transform:translateY(-2px)}
        .rgen-card-icon{font-size:2rem;color:var(--brand);opacity:.8}
        .rgen-card-title{font-weight:650;font-size:.85rem;color:var(--ink)}
        .rgen-card-fmt{font-size:.7rem;color:var(--faint);padding:2px 8px;border-radius:6px;background:var(--canvas)}
        .rgen-card-status{font-size:.72rem;color:var(--faint)}
        .rgen-card-dl{margin-top:4px}
        .rgen-card-dl a{color:var(--s-done);font-weight:600;text-decoration:none;font-size:.78rem}
        .rgen-card-dl a:hover{text-decoration:underline}

/* ===== 资源工坊 · Quiz 栏全屏展开 ===== */
        .rgen-result-header-right{display:flex;align-items:center;gap:8px}
        .rgen-quiz-expand,.rgen-quiz-export{
          display:inline-flex;align-items:center;justify-content:center;
          width:28px;height:28px;padding:0;flex-shrink:0;
          border:1px solid var(--line);border-radius:7px;
          background:var(--surface);color:var(--muted);
          font-size:.8rem;cursor:pointer;transition:all .15s;
        }
        .rgen-quiz-expand:hover,.rgen-quiz-export:hover:not(:disabled){border-color:var(--brand);color:var(--brand);background:var(--brand-tint)}
        .rgen-quiz-expand:focus-visible,.rgen-quiz-export:focus-visible{outline:2px solid var(--brand);outline-offset:1px}
        /* 还没生成题目时不给点 —— 导出按钮是常驻的，但没内容时置灰 */
        .rgen-quiz-export:disabled{opacity:.4;cursor:not-allowed}
        /* 展开态：右栏里除 Quiz 以外的三块收起，Quiz 靠既有 flex 自然吃满整宽整高 */
        .rgen-right.quiz-focus > .rgen-planner-panel,
        .rgen-right.quiz-focus > .rgen-agent-cards-row,
        .rgen-right.quiz-focus .rgen-doc-gen-col{display:none}


/* ===== AI 画像构建 · 雷达图数值语义说明 ===== */
/* 雷达图与 6 个进度条上的数字是「系统对各维度的了解程度」（置信度），
   不是对学生的评价。不加说明时，一个停在 25% 的「知识基础」会被读成
   「我的知识基础很差」—— 这是实际发生过的误读。 */
.pc-radar-note {
  margin: var(--s3) var(--s1) 0;
  font-size: var(--t-xs);
  color: var(--faint);
  line-height: 1.6;
  text-align: center;
}
.pc-radar-note strong { color: var(--muted); font-weight: 600; }


/* ============================================================
   资源工坊 · 左栏补齐高度 + Planner 加高
   实测：.rgen-left 容器本身是满高的（860px），但里面两个盒子
   加起来只到 y=536，而右侧内容区到 974 —— 中间空了 438px，
   看着就是「左栏和屏幕不等高」。
   修法：让最后一个盒子吃掉剩余空间，左栏底边就与内容区对齐。
   （不是把容器改高 —— 容器本来就是高的，是内容没撑开。）
   ============================================================ */
.rgen-left > .rgen-panel:last-of-type {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
/* 快速模板是网格按钮；盒子变高后让按钮组从上往下排，
   不要被拉伸成一行行占满（那会显得很空）。 */
.rgen-left > .rgen-panel:last-of-type > *:last-child {
  align-content: start;
  overflow-y: auto;
}

/* Planner Agent：原来体高只有 39px、上限 140px —— 规划结果一多就挤。
   给一个下限让它在空态也有体量，上限放宽到 240px。 */
.rgen-planner-body {
  min-height: 96px;
  max-height: 240px;
}


/* ============================================================
   资源工坊 · 左栏第二版（推翻上一版的方向）
   上一版让「快速模板」flex:1 撑满 —— 方向反了。
   用户要的是：
     · 生成新资源（上面那个）长一点，吃掉多余高度
     · 快速模板（下面那个）保持自然高度、贴底就行
     · 左栏整体加宽 ——「主题」那个输入框在 300px 里太挤
   后写的规则覆盖前面的（同特异性靠加载顺序取胜），所以这里直接覆盖。
   ============================================================ */
.rgen-left {
  width: 340px;          /* 300 → 340，主题输入框从 ~260px 变成 ~300px 可用 */
}

/* 上面那个（生成新资源）吃掉剩余高度 */
.rgen-left > .rgen-panel:first-of-type {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* 下面那个（快速模板）回到自然高度，被挤到最底下 */
.rgen-left > .rgen-panel:last-of-type {
  flex: 0 0 auto;
  margin-top: auto;
  display: block;
}
/* 撤销上一版给它的两条：按钮组不再需要 align-content，也不再需要自己滚 */
.rgen-left > .rgen-panel:last-of-type > *:last-child {
  align-content: normal;
  overflow-y: visible;
}