html { height: 100%; }
body {
    margin: 0; height: 100%; box-sizing: border-box; overflow: hidden;
    padding-top: 0 !important; padding-bottom: 0 !important;
}

/* ======================================================
   DESIGN TOKENS — Aligned with report_v2 (analytics-root)
   ====================================================== */
.dashboard-root {
    --bg-deep: #f4f2ee;
    --bg-base: #faf9f7;
    --bg-surface: #ffffff;
    --bg-elevated: #ffffff;
    --bg-hover: #f0eeea;
    --border-subtle: rgba(0,0,0,0.05);
    --border-light: rgba(0,0,0,0.08);
    --border-med: rgba(0,0,0,0.12);
    --text-1: #1a1a2e;
    --text-2: #6b6b7b;
    --text-3: #a0a0ab;
    --text-4: #d0d0d5;
    --gold: #b8860b;
    --gold-soft: rgba(184,134,11,0.08);
    --blue: #3574d4;
    --cyan: #2a9d8f;
    --coral: #d64545;
    --violet: #7b5ec4;
    --amber: #d4880f;
    --wt-accent: #4361ee;
    --wt-accent-light: #e8ecff;
    --wt-accent-soft: rgba(67,97,238,0.08);
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'DM Mono', 'Menlo', 'Consolas', monospace;
    --navbar-h: 52px;
    --sub-nav-h: 44px;
    --ease: cubic-bezier(0.16,1,0.3,1);
    --dur: 0.35s;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);

    background: var(--bg-deep);
    -webkit-font-smoothing: antialiased;
    height: calc(100vh - var(--navbar-h));
    margin-top: var(--navbar-h);
    overflow: hidden;
    font-family: var(--font-body);
    color: var(--text-1);
}

/* Noise texture overlay */
.dashboard-root::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.018;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Scrollbar */
.dashboard-root ::-webkit-scrollbar { width: 5px; }
.dashboard-root ::-webkit-scrollbar-track { background: transparent; }
.dashboard-root ::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 4px; }

/* ======================================================
   SUB NAVIGATION
   ====================================================== */
.dashboard-sub-nav {
    height: var(--sub-nav-h);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    display: none; /* 默认隐藏，仅移动端显示 */
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    position: relative;
}
.dashboard-sub-nav-back {
    position: absolute; left: 8px;
    width: 32px; height: 32px; border-radius: 8px; border: none;
    background: transparent; cursor: pointer; display: flex;
    align-items: center; justify-content: center; color: var(--text-2);
    transition: background 0.2s, color 0.2s; text-decoration: none;
}
.dashboard-sub-nav-back:hover { background: var(--bg-hover); color: var(--text-1); }
.dashboard-sub-nav-title {
    font-size: 15px; font-weight: 700; color: var(--text-1);
    text-align: center;
}
.dashboard-sub-nav-badge {
    font-size: 12px; font-weight: 500; color: var(--text-2);
    background: var(--bg-hover); padding: 2px 10px; border-radius: 10px;
}

/* ======================================================
   MAIN BODY
   ====================================================== */
.dashboard-body {
    height: calc(100vh - var(--navbar-h) - var(--sub-nav-h));
    overflow-y: auto;
    padding: 2rem 2.5rem 4rem;
    max-width: 960px;
    margin: 0 auto;
}

/* ======================================================
   FILTER BAR
   ====================================================== */
.dashboard-filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--bg-surface);
    border-radius: 10px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.dashboard-filter-group {
    display: flex; align-items: center; gap: 6px;
}
.dashboard-filter-label {
    font-size: 0.72rem; font-weight: 600; color: var(--text-3);
    font-family: var(--font-mono); text-transform: uppercase;
    letter-spacing: 0.5px; white-space: nowrap;
}
.dashboard-filter-select {
    height: 34px; padding: 0 12px; border: 1px solid var(--border-light);
    border-radius: 6px; font-size: 0.82rem; color: var(--text-1);
    font-family: var(--font-body); background: var(--bg-base); cursor: pointer;
    outline: none; min-width: 120px; transition: border-color 0.2s;
}
.dashboard-filter-select:focus { border-color: var(--gold); }
.dashboard-filter-btn {
    height: 34px; padding: 0 20px; border: 1px solid var(--gold); border-radius: 6px;
    background: var(--gold-soft); color: var(--gold); font-size: 0.78rem; font-weight: 600;
    font-family: var(--font-mono); cursor: pointer; display: flex; align-items: center; gap: 6px;
    transition: all 0.2s; letter-spacing: 0.3px;
}
.dashboard-filter-btn:hover { background: var(--gold); color: #fff; }
.dashboard-filter-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.dashboard-spinner {
    width: 14px; height: 14px; border: 2px solid rgba(184,134,11,0.2);
    border-top-color: var(--gold); border-radius: 50%;
    animation: dashboard-spin 0.6s linear infinite;
}
@keyframes dashboard-spin { to { transform: rotate(360deg); } }

/* ======================================================
   EMPTY STATE
   ====================================================== */
.dashboard-empty {
    text-align: center; padding: 6rem 2rem; color: var(--text-3);
}
.dashboard-empty i { font-size: 3rem; display: block; margin-bottom: 1rem; opacity: 0.4; }
.dashboard-empty p { font-size: 0.9rem; }

/* ======================================================
   COHORT BAR
   ====================================================== */
.dashboard-cohort-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--bg-surface);
    border-radius: 10px;
    border: 1px solid var(--border-light);
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.dashboard-cohort-label {
    font-size: 0.72rem; font-weight: 600; color: var(--text-3);
    font-family: var(--font-mono); text-transform: uppercase;
    letter-spacing: 0.5px; white-space: nowrap; display: flex; align-items: center; gap: 4px;
}
.dashboard-cohort-label i { color: var(--gold); }
.dashboard-cohort-options {
    display: flex; gap: 6px; flex-wrap: wrap;
}
.dashboard-cohort-btn {
    height: 28px; padding: 0 12px; border: 1px solid var(--border-light);
    border-radius: 14px; background: var(--bg-base); font-size: 0.75rem;
    font-family: var(--font-mono); color: var(--text-2); cursor: pointer;
    transition: all 0.2s; display: flex; align-items: center; gap: 4px;
}
.dashboard-cohort-btn:hover { border-color: var(--gold); color: var(--gold); }
.dashboard-cohort-btn--active {
    background: var(--gold); color: #fff; border-color: var(--gold);
}
.dashboard-cohort-btn--active .dashboard-cohort-count {
    color: rgba(255,255,255,0.7);
}
.dashboard-cohort-count {
    font-size: 0.65rem; color: var(--text-3);
}

/* ======================================================
   KPI ROW
   ====================================================== */
.dashboard-kpi-row {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}
.dashboard-kpi-card {
    flex: 1;
    text-align: center;
    padding: 1rem 0.5rem;
}
.dashboard-kpi-value {
    font-size: 1.75rem; font-weight: 500; color: var(--text-1);
    font-family: var(--font-mono); font-variant-numeric: tabular-nums;
    line-height: 1.2;
}
.dashboard-kpi-label {
    font-size: 0.6rem; color: var(--text-3); margin-top: 0.25rem;
    font-family: var(--font-mono); text-transform: uppercase;
    letter-spacing: 1px;
}

/* ======================================================
   SECTION
   ====================================================== */
.dashboard-section {
    margin-bottom: 3rem;
    scroll-margin-top: 1rem;
}
.dashboard-section-header {
    display: flex; align-items: baseline; gap: 0.75rem;
    margin-bottom: 1.25rem; flex-wrap: wrap;
}
.dashboard-section-num {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 300;
    color: var(--text-4);
    line-height: 1;
    letter-spacing: -0.02em;
}
.dashboard-section-header h3 {
    font-size: 1.1rem; font-weight: 600; color: var(--text-1);
    margin: 0; display: flex; align-items: center; gap: 6px;
}
.dashboard-section-header h3 i { color: var(--gold); font-size: 0.9rem; }
.dashboard-section-desc {
    font-size: 0.72rem; color: var(--text-3);
    font-family: var(--font-mono);
}
.dashboard-section-link {
    margin-left: auto; font-size: 0.8rem; color: var(--gold);
    text-decoration: none; display: flex; align-items: center; gap: 4px;
    transition: opacity 0.2s; cursor: pointer; background: none; border: none;
    font-family: var(--font-body); padding: 0;
}
.dashboard-section-link:hover { opacity: 0.7; }
.dashboard-section-link--active {
    color: #4361ee;
    font-weight: 600;
}
.dashboard-warning-count {
    font-size: 0.72rem; font-weight: 600; color: var(--coral);
    font-family: var(--font-mono);
    background: rgba(214,69,69,0.08); padding: 2px 10px;
    border-radius: 10px;
}

/* ======================================================
   CHARTS
   ====================================================== */
.dashboard-chart { width: 100%; height: 380px; }
.dashboard-chart--river { height: 420px; }
.dashboard-chart--class { height: 480px; }
.dashboard-chart--knowledge { height: 500px; }

/* Chart toggle */
.dashboard-chart-toggle {
    display: flex; gap: 0; margin-left: auto;
    border: 1px solid var(--border-light); border-radius: 6px; overflow: hidden;
}
.dashboard-toggle-btn {
    height: 26px; padding: 0 12px; border: none;
    background: var(--bg-base); font-size: 0.72rem; font-weight: 500;
    font-family: var(--font-mono); color: var(--text-2); cursor: pointer;
    transition: all 0.2s; letter-spacing: 0.3px;
}
.dashboard-toggle-btn + .dashboard-toggle-btn { border-left: 1px solid var(--border-light); }
.dashboard-toggle-btn:hover { color: var(--gold); }
.dashboard-toggle-btn--active {
    background: var(--gold-soft); color: var(--gold); border-color: var(--gold);
}

/* Filter select — shared style */
.dashboard-filter-inline {
    margin-left: auto;
}
.dashboard-filter-inline-select {
    height: 26px; padding: 0 10px; border: 1px solid var(--border-light);
    border-radius: 6px; font-size: 0.72rem; color: var(--text-1);
    font-family: var(--font-mono); background: var(--bg-base); cursor: pointer;
    outline: none; transition: border-color 0.2s;
}
.dashboard-filter-inline-select:focus { border-color: var(--gold); }

/* ======================================================
   SECTION HELP / CAPTION
   ====================================================== */
.dashboard-section-help {
    margin-top: 0.75rem; padding: 0.6rem 0.8rem;
    background: var(--bg-base); border-radius: 6px;
    font-size: 0.78rem; color: var(--text-2); line-height: 1.7;
    border-left: 2px solid var(--gold);
}
.dashboard-section-help i { color: var(--gold); margin-right: 4px; font-size: 0.75rem; }

/* ======================================================
   TABLES
   ====================================================== */
.dashboard-warning-table-wrap,
.dashboard-class-table-wrap {
    overflow-x: auto;
}
.dashboard-warning-table,
.dashboard-class-table {
    width: 100%; border-collapse: collapse;
    font-family: var(--font-mono); font-size: 0.82rem;
}
.dashboard-warning-table th,
.dashboard-class-table th {
    padding: 0.5rem 0.75rem; text-align: left; font-weight: 600;
    color: var(--text-3); font-size: 0.68rem;
    text-transform: uppercase; letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-light);
    white-space: nowrap;
}
.dashboard-warning-table td,
.dashboard-class-table td {
    padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
}
.dashboard-warning-table tbody tr:hover,
.dashboard-class-table tbody tr:hover { background: var(--bg-hover); }

.dashboard-text-danger { color: var(--coral); font-weight: 600; }
.dashboard-text-success { color: var(--cyan); font-weight: 600; }

.dashboard-warning-badge {
    display: inline-block; padding: 2px 8px; border-radius: 10px;
    font-size: 0.68rem; font-weight: 600; font-family: var(--font-mono);
}
.dashboard-warning-badge--level2 {
    background: rgba(212,136,15,0.1); color: var(--amber);
}
.dashboard-warning-badge--level3 {
    background: rgba(214,69,69,0.1); color: var(--coral);
}

.dashboard-rank-dot {
    font-size: 0.72rem; color: var(--text-2); font-family: var(--font-mono);
}

.dashboard-class-table-wrap {
    margin-top: 1rem;
}

/* ======================================================
   STAR RATINGS
   ====================================================== */
.dashboard-stars {
    color: #f39c12;
    font-size: 14px;
    letter-spacing: 1px;
    white-space: nowrap;
}
.dashboard-stars small {
    color: var(--text-3);
    font-size: 11px;
    margin-left: 2px;
}

/* ======================================================
   LOCKED SECTION
   ====================================================== */
.dashboard-locked {
    text-align: center; padding: 3rem 2rem; color: var(--text-3);
    background: var(--bg-base); border-radius: 12px; margin-top: 0.5rem;
    border: 1px dashed var(--border-med);
}
.dashboard-locked-icon { margin-bottom: 0.75rem; }
.dashboard-locked-icon i { font-size: 2rem; color: var(--text-4); }
.dashboard-locked-text p { font-size: 0.85rem; line-height: 1.6; margin: 0.25rem 0; }
.dashboard-locked-text p strong { color: var(--text-2); }

/* ======================================================
   WALKTHROUGH PANEL (inline in section 04)
   ====================================================== */
.dashboard-walkthrough-panel {
    margin-top: 2rem;
    border: 2px solid var(--wt-accent);
    border-radius: 12px;
    background: var(--bg-surface);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(67,97,238,0.08);
}

.dashboard-wt-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--wt-accent), #6366f1);
    color: #fff;
}
.dashboard-wt-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.dashboard-wt-header h4 i { font-size: 0.9rem; }
.dashboard-wt-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.dashboard-wt-agg-btn {
    background: #f0f0f0;
    border: 1px solid #ddd;
    color: #555;
    padding: 4px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.78rem;
    font-family: var(--font-body);
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s;
}
.dashboard-wt-agg-btn:hover { background: #e5e5e5; }
.dashboard-wt-agg-btn--active {
    background: #4361ee;
    border-color: #4361ee;
    color: #fff;
    font-weight: 600;
}
.dashboard-wt-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 20px 0 8px;
}
.dashboard-wt-close-btn {
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}
.dashboard-wt-close-btn:hover { background: rgba(255,255,255,0.3); }

.dashboard-wt-loading {
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-3);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* ===== 步骤指示器 ===== */
.dashboard-wt-steps {
    display: flex;
    justify-content: center;
    gap: 0;
    border-bottom: 2px solid var(--border-light);
    background: var(--bg-base);
}
.dashboard-wt-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 14px;
    color: #888;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -2px;
    user-select: none;
}
.dashboard-wt-step:hover { color: var(--wt-accent); }
.dashboard-wt-step--active {
    border-bottom-color: var(--wt-accent);
    font-weight: 600;
    color: var(--wt-accent);
}
.dashboard-wt-step--completed { color: #2ecc71; }
.dashboard-wt-step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-hover);
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}
.dashboard-wt-step--active .dashboard-wt-step-num {
    background: var(--wt-accent);
    color: white;
}
.dashboard-wt-step--completed .dashboard-wt-step-num {
    background: #2ecc71;
    color: white;
}

/* ===== 步骤说明 ===== */
.dashboard-wt-step-desc {
    background: var(--wt-accent-light);
    padding: 16px;
    border-radius: 8px;
    margin: 16px 20px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-1);
    border-left: 3px solid var(--wt-accent);
}
.dashboard-wt-step-desc code {
    background: rgba(67,97,238,0.12);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 13px;
    color: var(--wt-accent);
    font-family: var(--font-mono);
}

/* ===== 推演表格 ===== */
.dashboard-wt-content {
    padding: 0 0 16px;
}

.dashboard-wt-table-wrap {
    overflow-x: auto;
    margin: 0 20px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
}
.dashboard-wt-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.dashboard-wt-table th {
    background: var(--bg-base);
    padding: 8px 12px;
    text-align: center;
    white-space: nowrap;
    border-bottom: 2px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 2;
    font-weight: 600;
    color: var(--text-1);
}
.dashboard-wt-table td {
    padding: 6px 10px;
    text-align: center;
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
}
.dashboard-wt-table tr:hover td { background: var(--wt-accent-light); }

.dashboard-wt-sticky-left {
    text-align: left;
    white-space: nowrap;
    font-weight: 500;
    position: sticky;
    left: 0;
    background: var(--bg-surface);
    z-index: 1;
}
.dashboard-wt-sticky-left2 {
    text-align: left;
    white-space: nowrap;
    position: sticky;
    left: 100px;
    background: var(--bg-surface);
    z-index: 1;
}
.dashboard-wt-table tr:hover .dashboard-wt-sticky-left,
.dashboard-wt-table tr:hover .dashboard-wt-sticky-left2 {
    background: var(--wt-accent-light);
}

.dashboard-wt-exam-date,
.dashboard-wt-diff-factor {
    font-size: 11px;
    color: #888;
    display: block;
}

.dashboard-wt-positive { color: #2ecc71; font-weight: 500; }
.dashboard-wt-negative { color: #e74c3c; font-weight: 500; }

/* ===== 小节标题 ===== */
.dashboard-wt-section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-1);
    margin: 24px 20px 12px;
}

/* ===== 学期区间选择器 ===== */
.dashboard-wt-semester-bar {
    position: relative;
    height: 40px;
    background: var(--bg-base);
    border-radius: 8px;
    overflow: hidden;
    margin: 8px 20px;
    border: 1px solid var(--border-light);
}
.dashboard-wt-semester-seg {
    position: absolute;
    top: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    transition: all 0.2s;
    border-right: 1px solid var(--border-light);
    background: var(--bg-surface);
    overflow: hidden;
    white-space: nowrap;
}
.dashboard-wt-semester-seg:last-child { border-right: none; }
.dashboard-wt-semester-seg:hover {
    background: var(--wt-accent-soft);
    color: var(--wt-accent);
}
.dashboard-wt-semester-selected {
    background: rgba(67,97,238,0.15) !important;
    color: var(--wt-accent) !important;
    font-weight: 600;
    box-shadow: inset 0 -3px 0 var(--wt-accent);
}
.dashboard-wt-semester-hint {
    font-size: 12px;
    color: #888;
    margin: 0 20px 12px;
}
.dashboard-wt-semester-hint i { margin-right: 4px; }

/* ===== 甘特图 ===== */
.dashboard-wt-gantt-card {
    border: 1px solid var(--border-light);
    border-radius: 8px;
    background: var(--bg-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    overflow: hidden;
    margin: 20px;
}
.dashboard-wt-gantt-header {
    display: flex;
    border-bottom: 2px solid var(--border-light);
    background: var(--bg-base);
}
.dashboard-wt-gantt-label-col {
    flex-shrink: 0;
    width: 100px;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 600;
    color: #888;
    display: flex;
    align-items: center;
    border-right: 1px solid var(--border-light);
}
.dashboard-wt-gantt-axis-col {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}
.dashboard-wt-gantt-axis {
    position: relative;
    height: 48px;
    padding: 0 8px;
}
.dashboard-wt-gantt-axis-marker {
    position: absolute;
    top: 0;
    transform: translateX(-50%);
    text-align: center;
    z-index: 2;
}
.dashboard-wt-gantt-axis-label {
    display: block;
    font-size: 10px;
    font-weight: 600;
    color: var(--wt-accent);
    white-space: nowrap;
    margin: 0 auto;
}
.dashboard-wt-gantt-axis-date {
    display: block;
    font-size: 9px;
    color: #888;
}
.dashboard-wt-gantt-axis-bound {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 10px;
    color: #888;
    white-space: nowrap;
}
.dashboard-wt-gantt-axis-start { left: 4px; }
.dashboard-wt-gantt-axis-end { right: 4px; }

.dashboard-wt-gantt-body {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.dashboard-wt-gantt-row {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    min-width: fit-content;
    transition: background 0.2s;
}
.dashboard-wt-gantt-row:last-child { border-bottom: none; }
.dashboard-wt-gantt-row:hover { background: rgba(67,97,238,0.015); }

.dashboard-wt-gantt-row .dashboard-wt-gantt-label-col {
    width: 100px;
    padding: 6px 10px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-1);
    background: var(--bg-surface);
    position: sticky;
    left: 0;
    z-index: 2;
    box-shadow: inset -1px 0 0 var(--border-light);
}
.dashboard-wt-gantt-row-name {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
    transition: color 0.2s;
}
.dashboard-wt-gantt-row-name:hover { color: var(--wt-accent); }

.dashboard-wt-gantt-track-col {
    flex: 1;
    min-width: 400px;
    padding: 6px 0;
}
.dashboard-wt-gantt-track {
    position: relative;
    height: 36px;
    padding: 0 8px;
}
.dashboard-wt-gantt-grid-line {
    position: absolute;
    top: -8px;
    bottom: -8px;
    width: 1px;
    background: var(--border-light);
    opacity: 0.5;
    z-index: 1;
}

/* Gantt bars */
.dashboard-wt-gantt-bar {
    position: absolute;
    top: 3px;
    height: 30px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    z-index: 3;
    padding: 0 6px;
    min-width: 20px;
}
.dashboard-wt-gantt-bar:hover {
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    z-index: 4;
    transform: translateY(-1px);
}
.dashboard-wt-bar-active {
    background: rgba(52,199,89,0.15);
    border: 1px solid rgba(52,199,89,0.4);
}
.dashboard-wt-bar-active:hover {
    background: rgba(52,199,89,0.25);
    border-color: rgba(52,199,89,0.7);
}
.dashboard-wt-bar-ended {
    background: rgba(142,142,147,0.1);
    border: 1px solid rgba(142,142,147,0.3);
}
.dashboard-wt-bar-ended:hover {
    background: rgba(142,142,147,0.2);
    border-color: rgba(142,142,147,0.5);
}
.dashboard-wt-bar-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    line-height: 1.2;
}
.dashboard-wt-bar-active .dashboard-wt-bar-label { color: #248a3d; }
.dashboard-wt-bar-ended .dashboard-wt-bar-label { color: #666; }
.dashboard-wt-bar-dates {
    font-size: 9px;
    color: #888;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    line-height: 1.2;
}

/* Gantt hover highlight */
.dashboard-wt-gantt-row-highlight { background: rgba(67,97,238,0.04) !important; }
.dashboard-wt-gantt-row-highlight .dashboard-wt-gantt-label-col { background: rgba(67,97,238,0.04) !important; }
.dashboard-wt-bar-highlight.dashboard-wt-bar-active {
    background: rgba(52,199,89,0.3) !important;
    border-color: rgba(52,199,89,0.7) !important;
    box-shadow: 0 2px 8px rgba(52,199,89,0.25);
}
.dashboard-wt-bar-highlight.dashboard-wt-bar-ended {
    background: rgba(142,142,147,0.2) !important;
    border-color: rgba(142,142,147,0.5) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* ===== 雷达图 ===== */
.dashboard-wt-radar-wrap {
    margin: 16px 20px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 16px;
    background: var(--bg-surface);
}

/* ===== 悬浮提示 ===== */
.dashboard-wt-tooltip {
    position: fixed;
    background: #333;
    color: white;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 12px;
    z-index: 1000;
    pointer-events: none;
    max-width: 300px;
    line-height: 1.6;
}
.dashboard-wt-tooltip .dashboard-stars {
    color: #f39c12;
    font-size: 12px;
}

/* ===== 导航按钮 ===== */
.dashboard-wt-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 20px 20px 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}
.dashboard-wt-nav-info {
    font-size: 14px;
    color: #888;
}
.dashboard-wt-collapse {
    text-align: center;
    padding: 12px 20px 20px;
}
.dashboard-wt-btn-collapse {
    background: #f5f5f5;
    color: #666;
    border: 1px solid #ddd;
    padding: 8px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-family: var(--font-body);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}
.dashboard-wt-btn-collapse:hover {
    background: #eee;
    color: #333;
}
.dashboard-wt-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.dashboard-wt-btn-primary {
    background: var(--wt-accent);
    color: white;
}
.dashboard-wt-btn-primary:hover { background: #3a56d4; }
.dashboard-wt-btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.dashboard-wt-btn-secondary {
    background: var(--bg-base);
    color: var(--text-1);
    border: 1px solid var(--border-light);
}
.dashboard-wt-btn-secondary:hover { background: var(--bg-hover); }
.dashboard-wt-btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }

/* ======================================================
   STAGGER ANIMATION
   ====================================================== */
.dashboard-stagger-in {
    opacity: 0;
    transform: translateY(12px);
    animation: dashboardStaggerIn 0.5s var(--ease) forwards;
}
@keyframes dashboardStaggerIn {
    to { opacity: 1; transform: translateY(0); }
}

/* ======================================================
   EMPTY SECTION
   ====================================================== */
.dashboard-section--empty {
    text-align: center; padding: 4rem 2rem; color: var(--text-3);
}
.dashboard-section--empty i { font-size: 2.5rem; display: block; margin-bottom: 0.75rem; opacity: 0.3; }
.dashboard-section--empty p { font-size: 0.85rem; }

/* Section-level empty state (inside a section that has a header) */
.dashboard-section-empty {
    text-align: center; padding: 3rem 2rem; color: var(--text-3);
    background: var(--bg-base); border-radius: 12px; margin-top: 0.5rem;
}
.dashboard-section-empty i { font-size: 2rem; display: block; margin-bottom: 0.5rem; opacity: 0.25; }
.dashboard-section-empty p { font-size: 0.85rem; line-height: 1.6; max-width: 480px; margin: 0 auto; }

/* Warning collapse toggle */
.dashboard-warning-toggle {
    display: flex; align-items: center; justify-content: center;
    padding: 0.5rem 0; margin-top: 0.5rem;
    cursor: pointer; color: var(--text-3); font-size: 0.75rem;
    font-family: var(--font-mono); gap: 4px;
    transition: color 0.2s;
    user-select: none;
}
.dashboard-warning-toggle:hover { color: var(--gold); }
.dashboard-warning-toggle i { font-size: 0.7rem; }

/* ======================================================
   RESPONSIVE
   ====================================================== */
@media (max-width: 768px) {
    .dashboard-sub-nav { display: flex; }
    .dashboard-root {
        margin-top: 0;
        height: 100vh;
    }
    .dashboard-root .app-navbar { display: none !important; }
    .dashboard-body { height: calc(100vh - var(--sub-nav-h)); padding: 1rem 1rem 5rem; }
    .dashboard-filter-bar { padding: 10px 12px; gap: 8px; }
    .dashboard-filter-select { min-width: 90px; font-size: 0.78rem; }
    .dashboard-kpi-row { flex-wrap: wrap; gap: 0.75rem; }
    .dashboard-kpi-card { min-width: calc(33% - 0.5rem); }
    .dashboard-kpi-value { font-size: 1.3rem; }
    .dashboard-chart { height: 280px; }
    .dashboard-chart--river { height: 320px; }
    .dashboard-chart--class { height: 380px; }
    .dashboard-chart--knowledge { height: 380px; }
    .dashboard-cohort-bar { padding: 8px 12px; gap: 6px; }
    .dashboard-cohort-btn { height: 26px; padding: 0 10px; font-size: 0.7rem; }
    .dashboard-section-num { font-size: 2rem; }
    .dashboard-section-header h3 { font-size: 0.95rem; }

    /* Walkthrough responsive */
    .dashboard-wt-steps { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .dashboard-wt-step { padding: 8px 10px; font-size: 12px; }
    .dashboard-wt-step-label { display: none; }
    .dashboard-wt-gantt-label-col { width: 70px; font-size: 11px; }
    .dashboard-wt-gantt-track-col { min-width: 280px; }
    .dashboard-wt-semester-bar { height: 32px; }
    .dashboard-wt-semester-seg { font-size: 10px; }
    .dashboard-wt-step-desc { margin: 12px; padding: 12px; font-size: 13px; }
    .dashboard-wt-table-wrap { margin: 0 12px; }
    .dashboard-wt-section-title { margin-left: 12px; margin-right: 12px; }
    .dashboard-wt-semester-hint { margin-left: 12px; margin-right: 12px; }
    .dashboard-wt-gantt-card { margin: 12px; }
    .dashboard-wt-radar-wrap { margin: 12px; }
    .dashboard-wt-nav { margin-left: 12px; margin-right: 12px; }
}

@media (max-width: 480px) {
    .dashboard-kpi-card { min-width: calc(50% - 0.5rem); }
    .dashboard-kpi-value { font-size: 1.1rem; }
    .dashboard-section-num { font-size: 1.6rem; }
}

/* ===== 打印 ===== */
@media print {
    .dashboard-wt-nav,
    .dashboard-wt-steps {
        display: none;
    }
    .dashboard-wt-table-wrap {
        border: 1px solid #000;
    }
    .dashboard-wt-gantt-card {
        box-shadow: none;
        border: 1px solid #000;
    }
}