/* ==========================================================================
   cases-ppt.sinogenomics.com - 生产级实战案例集 PPT 样式规范
   High-End Cyberpunk Dark Presentation Theme & Responsive Deck Engine
   ========================================================================== */

:root {
  --bg-dark: #0a0f1d;
  --bg-card: #121a2f;
  --bg-card-hover: #18223d;
  --border-card: #263455;
  --border-light: rgba(255, 255, 255, 0.08);

  --text-main: #f8fafc;
  --text-sub: #94a3b8;
  --text-body: #cbd5e1;
  --text-muted: #64748b;

  --accent-cyan: #38bdf8;
  --accent-cyan-glow: rgba(56, 189, 248, 0.25);
  --accent-emerald: #34d399;
  --accent-emerald-glow: rgba(52, 211, 153, 0.2);
  --accent-purple: #a855f7;
  --accent-amber: #fbbf24;
  --accent-rose: #f43f5e;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6), 0 0 15px rgba(56, 189, 248, 0.05);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.18);
}

/* ==========================================================================
   浅色模式高质感商务演示主题 (Apple Keynote Light Theme)
   ========================================================================== */
:root[data-theme="light"] {
  --bg-dark: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --border-card: #e2e8f0;
  --border-light: #cbd5e1;

  --text-main: #0f172a;
  --text-sub: #475569;
  --text-body: #1e293b;
  --text-muted: #64748b;

  --accent-cyan: #0284c7;
  --accent-cyan-glow: rgba(2, 132, 199, 0.18);
  --accent-emerald: #059669;
  --accent-emerald-glow: rgba(5, 150, 105, 0.18);
  --accent-purple: #7c3aed;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;

  --shadow-card: 0 10px 30px -10px rgba(15, 23, 42, 0.08), 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 20px rgba(2, 132, 199, 0.08);
}

[data-theme="light"] .top-status-ribbon {
  background: #f1f5f9;
  border-bottom-color: #e2e8f0;
  color: #475569;
}
[data-theme="light"] .ribbon-title {
  color: #0f172a;
}
[data-theme="light"] .ribbon-sep {
  color: #cbd5e1;
}
[data-theme="light"] .ribbon-chip {
  background: #ffffff;
  border-color: #e2e8f0;
  color: #334155;
}

[data-theme="light"] .top-header {
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: #e2e8f0;
}
[data-theme="light"] .brand-title {
  color: #0f172a;
}
[data-theme="light"] .brand-logo {
  background: rgba(2, 132, 199, 0.08);
  border-color: rgba(2, 132, 199, 0.25);
}

[data-theme="light"] .mode-tabs {
  background: #f1f5f9;
  border-color: #e2e8f0;
}
[data-theme="light"] .tab-btn {
  color: #64748b;
}
[data-theme="light"] .tab-btn:hover {
  color: #0f172a;
  background: rgba(15, 23, 42, 0.04);
}
[data-theme="light"] .tab-btn.active {
  color: #0284c7;
  background: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .btn-ghost {
  background: #f1f5f9;
  color: #334155;
  border-color: #e2e8f0;
}
[data-theme="light"] .btn-ghost:hover {
  background: #e2e8f0;
  color: #0f172a;
}
[data-theme="light"] .btn-secondary {
  background: rgba(5, 150, 105, 0.08);
  color: #059669;
  border-color: rgba(5, 150, 105, 0.25);
}
[data-theme="light"] .btn-secondary:hover {
  background: rgba(5, 150, 105, 0.16);
}

[data-theme="light"] .slide-canvas {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.08), 0 0 1px 1px rgba(15, 23, 42, 0.04);
}
[data-theme="light"] .slide-card-box {
  background: #f8fafc;
  border-color: #e2e8f0;
}
[data-theme="light"] .slide-card-box:hover {
  background: #ffffff;
  border-color: rgba(2, 132, 199, 0.4);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
}
[data-theme="light"] .card-header-line {
  border-bottom-color: #e2e8f0;
}
[data-theme="light"] .card-title-text {
  color: #0f172a;
}
[data-theme="light"] .card-content-body {
  color: #334155;
}
[data-theme="light"] .slide-footer-bar {
  border-top-color: #e2e8f0;
  color: #64748b;
}

[data-theme="light"] .card-badge-pill {
  background: rgba(2, 132, 199, 0.08);
  color: #0284c7;
  border-color: rgba(2, 132, 199, 0.25);
}
[data-theme="light"] .badge-emerald {
  background: rgba(5, 150, 105, 0.08);
  color: #059669;
  border-color: rgba(5, 150, 105, 0.25);
}
[data-theme="light"] .badge-purple {
  background: rgba(124, 58, 237, 0.08);
  color: #7c3aed;
  border-color: rgba(124, 58, 237, 0.25);
}
[data-theme="light"] .badge-amber {
  background: rgba(217, 119, 6, 0.08);
  color: #d97706;
  border-color: rgba(217, 119, 6, 0.25);
}
[data-theme="light"] .badge-rose {
  background: rgba(225, 29, 72, 0.08);
  color: #e11d48;
  border-color: rgba(225, 29, 72, 0.25);
}

[data-theme="light"] .deck-controls-bar {
  background: rgba(255, 255, 255, 0.96);
  border-color: #e2e8f0;
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.12), 0 0 1px rgba(15, 23, 42, 0.1);
}
[data-theme="light"] .ctrl-btn {
  background: #f8fafc;
  border-color: #e2e8f0;
  color: #334155;
}
[data-theme="light"] .ctrl-btn:hover {
  background: #f1f5f9;
  color: #0f172a;
}
[data-theme="light"] .ctrl-nav-btn {
  background: rgba(2, 132, 199, 0.08);
  border-color: rgba(2, 132, 199, 0.25);
  color: #0284c7;
}
[data-theme="light"] .ctrl-nav-btn:hover {
  background: rgba(2, 132, 199, 0.18);
  color: #0284c7;
}
[data-theme="light"] .page-indicator-box {
  color: #0f172a;
}
[data-theme="light"] .deck-progress-track {
  background: #e2e8f0;
}

[data-theme="light"] .doc-slide-section {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.05);
}

[data-theme="light"] .matrix-toolbar {
  background: #ffffff;
  border-color: #e2e8f0;
}
[data-theme="light"] .matrix-search-input {
  background: #f8fafc;
  border-color: #e2e8f0;
  color: #0f172a;
}
[data-theme="light"] .matrix-pill-btn {
  background: #f1f5f9;
  border-color: #e2e8f0;
  color: #475569;
}
[data-theme="light"] .matrix-pill-btn:hover {
  color: #0f172a;
  border-color: #cbd5e1;
}
[data-theme="light"] .matrix-pill-btn.active {
  background: rgba(2, 132, 199, 0.1);
  color: #0284c7;
  border-color: rgba(2, 132, 199, 0.35);
}

[data-theme="light"] .matrix-system-card {
  background: #ffffff;
  border-color: #e2e8f0;
}
[data-theme="light"] .matrix-system-card:hover {
  border-color: rgba(2, 132, 199, 0.4);
  box-shadow: 0 12px 24px -4px rgba(15, 23, 42, 0.08);
}
[data-theme="light"] .matrix-card-title {
  color: #0f172a;
}
[data-theme="light"] .matrix-chip {
  background: #f1f5f9;
  color: #475569;
}

[data-theme="light"] .thumbnail-drawer {
  background: #ffffff;
  border-right-color: #e2e8f0;
  box-shadow: 10px 0 30px rgba(15, 23, 42, 0.15);
}
[data-theme="light"] .drawer-header {
  border-bottom-color: #e2e8f0;
}
[data-theme="light"] .drawer-header h3 {
  color: #0f172a;
}
[data-theme="light"] .drawer-item {
  background: #f8fafc;
  border-color: #f1f5f9;
}
[data-theme="light"] .drawer-item:hover {
  background: #f1f5f9;
  border-color: #e2e8f0;
}
[data-theme="light"] .drawer-item.active {
  background: #f0f9ff;
  border-color: #0284c7;
}
[data-theme="light"] .drawer-item-title {
  color: #0f172a;
}
[data-theme="light"] .drawer-backdrop {
  background: rgba(15, 23, 42, 0.4);
}

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

html, body {
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-dark);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 顶部微细状态栏 */
.top-status-ribbon {
  background: rgba(18, 26, 47, 0.85);
  border-bottom: 1px solid var(--border-card);
  backdrop-filter: blur(8px);
  padding: 6px 20px;
  font-size: 11.5px;
  color: var(--text-sub);
}

.ribbon-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.ribbon-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.live-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  display: inline-block;
  animation: pulse-ring 2s infinite ease-in-out;
}

@keyframes pulse-ring {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
}

.ribbon-title {
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.ribbon-sep {
  color: rgba(255, 255, 255, 0.15);
}

.ribbon-sub {
  color: var(--text-sub);
}

.ribbon-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ribbon-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
}

.chip-icon {
  margin-right: 3px;
}

/* 顶部主导航条 */
.top-header {
  background: rgba(10, 15, 29, 0.92);
  border-bottom: 1px solid var(--border-card);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 10px 24px;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-sm);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.3px;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* 模式 Tabs */
.mode-tabs {
  display: flex;
  align-items: center;
  background: rgba(18, 26, 47, 0.9);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  gap: 4px;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-sub);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tab-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(59, 130, 246, 0.2));
  border: 1px solid rgba(56, 189, 248, 0.4);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.15);
}

/* 顶部操作按钮 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #fff;
  border: 1px solid rgba(56, 189, 248, 0.4);
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(52, 211, 153, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.btn-secondary:hover {
  background: rgba(52, 211, 153, 0.2);
  border-color: var(--accent-emerald);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-sub);
  border: 1px solid var(--border-light);
}

.btn-ghost:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

/* 主内容容器 */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
  min-height: calc(100vh - 160px);
}

/* ==========================================================================
   Deck 演播模式 (16:9 Slide Canvas)
   ========================================================================== */
.deck-viewport-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px 0 40px;
}

.slide-canvas {
  width: 100%;
  max-width: 1180px;
  aspect-ratio: 16 / 9;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  padding: 40px 48px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  animation: slideFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideFadeIn {
  from { opacity: 0; transform: translateY(8px) scale(0.99); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* 顶部炫彩高亮细条 */
.slide-canvas::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald), var(--accent-purple));
}

.slide-header {
  margin-bottom: 24px;
}

.slide-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.slide-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 6px;
}

.slide-subtitle {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.5;
}

/* 卡片容器：双栏布局 */
.cards-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  flex: 1;
  margin-bottom: 20px;
}

/* 卡片容器：四栏 2x2 */
.cards-grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 18px;
  flex: 1;
  margin-bottom: 20px;
}

/* 卡片容器：六栏 2x3 */
.cards-grid-6 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1fr 1fr;
  gap: 16px;
  flex: 1;
  margin-bottom: 20px;
}

.slide-card-box {
  background: rgba(10, 15, 29, 0.65);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.slide-card-box:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
}

.card-header-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.card-title-text {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
}

.card-badge-pill {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  white-space: nowrap;
}

.badge-emerald {
  background: rgba(52, 211, 153, 0.15);
  color: var(--accent-emerald);
  border-color: rgba(52, 211, 153, 0.3);
}

.badge-purple {
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-purple);
  border-color: rgba(168, 85, 247, 0.3);
}

.badge-amber {
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent-amber);
  border-color: rgba(251, 191, 36, 0.3);
}

.badge-rose {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border-color: rgba(244, 63, 94, 0.3);
}

.card-content-body {
  font-size: 12.5px;
  color: var(--text-body);
  line-height: 1.7;
  white-space: pre-line;
  flex: 1;
}

.slide-footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
}

/* ==========================================================================
   底部浮动控制条 (Deck Controls Bar)
   ========================================================================== */
.deck-controls-bar {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(18, 26, 47, 0.95);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.7), 0 0 15px rgba(56, 189, 248, 0.1);
  padding: 8px 16px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  width: 90%;
  max-width: 680px;
}

.controls-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.controls-left, .controls-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.controls-center {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ctrl-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  color: var(--text-sub);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 5px;
}

.ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.ctrl-nav-btn {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--accent-cyan);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ctrl-nav-btn:hover {
  background: rgba(56, 189, 248, 0.25);
  color: #fff;
  transform: scale(1.05);
}

.page-indicator-box {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  min-width: 60px;
  text-align: center;
}

.deck-progress-track {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}

.deck-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald));
  transition: width 0.3s ease;
}

/* ==========================================================================
   全屏投影模式 (Fullscreen Deck Mode)
   ========================================================================== */
body.fullscreen-mode .top-header,
body.fullscreen-mode .top-status-ribbon {
  display: none !important;
}

body.fullscreen-mode .main-container {
  padding: 0;
  max-width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.fullscreen-mode .slide-canvas {
  max-width: 100vw;
  height: 100vh;
  border-radius: 0;
  border: none;
}

/* ==========================================================================
   Doc 逐页通读模式 (Executive Reading View)
   ========================================================================== */
.doc-mode-container {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
  padding-bottom: 60px;
}

.doc-slide-section {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow-card);
  position: relative;
}

.doc-slide-section::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-emerald));
  border-top-left-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-lg);
}

.doc-section-header {
  margin-bottom: 24px;
}

/* ==========================================================================
   Matrix 全景系统矩阵模式 (56 Systems Grid & Search)
   ========================================================================== */
.matrix-mode-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 60px;
}

.matrix-toolbar {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.matrix-search-box {
  display: flex;
  align-items: center;
  position: relative;
}

.matrix-search-input {
  width: 100%;
  background: rgba(10, 15, 29, 0.8);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  color: #fff;
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.2s ease;
}

.matrix-search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

.matrix-filter-pills {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.matrix-pill-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  color: var(--text-sub);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.matrix-pill-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.matrix-pill-btn.active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 18px;
}

.matrix-system-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
  position: relative;
}

.matrix-system-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.matrix-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.matrix-card-code {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 13px;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

.matrix-card-cat {
  font-size: 11px;
  color: var(--text-muted);
}

.matrix-card-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.4;
}

.matrix-card-lede {
  font-size: 12.5px;
  color: var(--text-sub);
  margin-bottom: 14px;
  line-height: 1.5;
}

.matrix-card-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.matrix-chip {
  background: rgba(255, 255, 255, 0.05);
  font-size: 10.5px;
  padding: 2px 7px;
  border-radius: 4px;
  color: var(--text-body);
}

.matrix-card-link {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-cyan);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  align-self: flex-start;
}

.matrix-card-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   大纲抽屉 (Thumbnail Drawer)
   ========================================================================== */
.thumbnail-drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  left: -380px;
  width: 360px;
  background: #0d1424;
  border-right: 1px solid var(--border-card);
  z-index: 200;
  transition: left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 10px 0 30px rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
}

.thumbnail-drawer.open {
  left: 0;
}

.drawer-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-header h3 {
  font-size: 15px;
  color: #fff;
}

.drawer-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
}

.drawer-list {
  padding: 12px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.drawer-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
  transition: all 0.18s ease;
}

.drawer-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-light);
}

.drawer-item.active {
  background: rgba(56, 189, 248, 0.12);
  border-color: var(--accent-cyan);
}

.drawer-item-title {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.drawer-item-tag {
  font-size: 11px;
  color: var(--text-muted);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 190;
  display: none;
}

.drawer-backdrop.active {
  display: block;
}

/* ==========================================================================
   移动端响应式适配 (Mobile Viewports)
   ========================================================================== */
@media (max-width: 900px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-actions {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }
  .cards-grid-2, .cards-grid-4, .cards-grid-6 {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .slide-canvas {
    aspect-ratio: auto;
    padding: 24px;
  }
  .slide-title {
    font-size: 20px;
  }
  .deck-controls-bar {
    width: 95%;
  }
}