/* ==========================================================================
   龙猫云 (Totoro Cloud) - 植物拟态科技风 (Generative Botanical Tech UI)
   Eco-minimalist slate · Bioluminescent moss green · Warm amber acorn glass
   零外部重型依赖 · 纯原生 CSS · 完美昼夜平滑过渡 · 全终端响应式秒开
   ========================================================================== */

/* 1. 颜色变量体系 (昼夜双模式) */
:root {
  /* 白天模式 (Eco-Slate Parchment & Botanical Greens) */
  --bg-primary: #f3f6f3;
  --bg-surface: #ffffff;
  --bg-surface-glass: rgba(255, 255, 255, 0.88);
  --bg-elevated: #eaf1eb;
  --bg-subtle: #dbe7dc;
  
  --text-primary: #0c1811;
  --text-secondary: #2f4538;
  --text-muted: #576d60;
  --text-inverse: #ffffff;

  /* 生物发光青苔绿与暖琥珀橡果色 */
  --moss-primary: #15803d;
  --moss-light: #22c55e;
  --moss-biolum: #4ade80;
  --moss-glow: rgba(74, 222, 128, 0.22);
  
  --amber-acorn: #d97706;
  --amber-light: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.28);
  --amber-glass: rgba(245, 158, 11, 0.12);
  --amber-border: rgba(217, 119, 6, 0.35);

  --accent-gradient: linear-gradient(135deg, #15803d 0%, #16a34a 50%, #d97706 100%);
  --accent-gradient-hover: linear-gradient(135deg, #166534 0%, #15803d 50%, #b45309 100%);
  --accent-glow: rgba(34, 197, 94, 0.2);
  
  --border-light: rgba(47, 69, 56, 0.14);
  --border-highlight: rgba(34, 197, 94, 0.38);
  
  --shadow-sm: 0 1px 3px rgba(12, 24, 17, 0.06);
  --shadow-md: 0 6px 20px -2px rgba(12, 24, 17, 0.08);
  --shadow-lg: 0 16px 36px -4px rgba(12, 24, 17, 0.12);
  --shadow-glow: 0 0 28px rgba(34, 197, 94, 0.2);

  --badge-bg: rgba(34, 197, 94, 0.12);
  --badge-text: #15803d;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-theme: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

[data-theme="dark"] {
  /* 夜间模式 (Deep Forest Canopy Shadow & Bioluminescent Moss & Translucent Amber Glass) */
  --bg-primary: #0a0f0d;
  --bg-surface: #0f1712;
  --bg-surface-glass: rgba(15, 23, 18, 0.86);
  --bg-elevated: #15221a;
  --bg-subtle: #1c2e23;
  
  --text-primary: #edf5ef;
  --text-secondary: #9cb5a4;
  --text-muted: #698372;
  --text-inverse: #0a0f0d;

  --moss-primary: #4ade80;
  --moss-light: #86efac;
  --moss-biolum: #4ade80;
  --moss-glow: rgba(74, 222, 128, 0.4);
  
  --amber-acorn: #fbbf24;
  --amber-light: #fcd34d;
  --amber-glow: rgba(251, 191, 36, 0.38);
  --amber-glass: rgba(245, 158, 11, 0.18);
  --amber-border: rgba(251, 191, 36, 0.45);

  --accent-gradient: linear-gradient(135deg, #10b981 0%, #22c55e 50%, #f59e0b 100%);
  --accent-gradient-hover: linear-gradient(135deg, #34d399 0%, #4ade80 50%, #fbbf24 100%);
  --accent-glow: rgba(74, 222, 128, 0.35);
  
  --border-light: rgba(156, 181, 164, 0.14);
  --border-highlight: rgba(74, 222, 128, 0.42);
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 24px -2px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 18px 42px -4px rgba(0, 0, 0, 0.85);
  --shadow-glow: 0 0 32px rgba(74, 222, 128, 0.3);

  --badge-bg: rgba(74, 222, 128, 0.14);
  --badge-text: #86efac;
}

/* 2. 基础重置与排版规范 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px; /* 为吸顶导航保留锚点精准跳转缓冲 */
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: var(--transition-theme);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: 
    radial-gradient(ellipse at 15% 10%, rgba(74, 222, 128, 0.05) 0%, transparent 45%),
    radial-gradient(ellipse at 85% 80%, rgba(245, 158, 11, 0.04) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 88px 0;
  position: relative;
  transition: background-color 0.4s ease;
}

/* 锚点跳转高亮动态效果 */
.section-highlight {
  animation: section-pulse 1.4s ease-out;
}

@keyframes section-pulse {
  0% {
    box-shadow: inset 0 0 0 2px var(--moss-biolum);
  }
  100% {
    box-shadow: inset 0 0 0 0 transparent;
  }
}

/* 3. 页眉与导航栏 (Header & Botanical Glass Nav) */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-theme);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-logo-full-wrap {
  display: inline-flex;
  align-items: center;
  background: #ffffff;
  padding: 4px 10px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  border: 1.5px solid var(--border-light);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
  line-height: 0;
  flex-shrink: 0;
}

[data-theme="dark"] .brand-logo-full-wrap {
  background: #ffffff;
  box-shadow: 0 0 16px rgba(74, 222, 128, 0.22);
  border-color: rgba(74, 222, 128, 0.35);
}

.logo:hover .brand-logo-full-wrap {
  transform: scale(1.04);
  box-shadow: 0 4px 18px var(--moss-glow);
  border-color: var(--moss-biolum);
}

.brand-logo-full-img {
  height: 38px;
  width: auto;
  max-width: 145px;
  object-fit: contain;
  display: block;
}

.logo-cn-title {
  font-size: 1.32rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-left: 2px;
  white-space: nowrap;
}

.logo-icon-acorn {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, #15803d 0%, #22c55e 50%, #f59e0b 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 14px var(--accent-glow);
  position: relative;
  overflow: hidden;
}

.logo-text span {
  color: var(--moss-biolum);
  font-weight: 700;
  font-size: 0.95em;
}

/* 导航目录：首页 + 板块锚点 + 推荐资讯入口 */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 4px;
  transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
  color: var(--moss-biolum);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--moss-biolum), var(--amber-light));
  transition: width 0.28s ease;
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 80%;
}

/* 推荐资讯特别微章高亮 */
.nav-link-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: var(--amber-glass);
  border: 1px solid var(--amber-border);
  color: var(--amber-light);
  font-weight: 600;
}

.nav-link-badge:hover {
  background: var(--amber-light);
  color: #0d1410 !important;
  transform: translateY(-1px);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 昼夜模式切换按钮：磨砂透明、专业精致、无粗糙Emoji */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  background: var(--amber-glass);
  color: var(--amber-light);
  border-color: var(--amber-border);
  transform: rotate(18deg) scale(1.05);
}

.theme-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.4s ease, opacity 0.3s ease;
}

/* 4. 按钮规范 (CTA Buttons) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 11px 24px;
  border-radius: var(--radius-full);
  transition: var(--transition-smooth);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff !important;
  box-shadow: 0 4px 18px var(--accent-glow);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background: var(--bg-elevated);
  border-color: var(--moss-biolum);
  color: var(--moss-biolum);
  transform: translateY(-2px);
}

.btn-amber {
  background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 18px var(--amber-glow);
}

.btn-amber:hover {
  background: linear-gradient(135deg, #b45309 0%, #d97706 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--amber-glow);
}

.btn-lg {
  padding: 15px 34px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.86rem;
}

.btn-pulse {
  position: relative;
}

.btn-pulse::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7);
  animation: pulse-moss 2.4s infinite cubic-bezier(0.24, 0, 0.38, 1);
  pointer-events: none;
}

@keyframes pulse-moss {
  0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6); }
  70% { box-shadow: 0 0 0 12px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* 5. 主视觉区 (Hero Section with Botanical Canopy Glow) */
.hero-section {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-canopy-glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 520px;
  background: radial-gradient(circle, rgba(74, 222, 128, 0.16) 0%, rgba(245, 158, 11, 0.08) 35%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 1180px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid var(--border-light);
  white-space: nowrap;
}

.hero-badge .acorn-dot {
  width: 8px;
  height: 8px;
  background: #f59e0b;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px #f59e0b;
}

/* 醒目大标题（严格单行不折行、自适应流体字号） */
.hero-title {
  font-size: clamp(1.15rem, 3.2vw, 2.7rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  color: var(--text-primary);
  white-space: nowrap; /* 绝不分行 */
  overflow: visible;
}

.hero-title .brand-gradient {
  background: linear-gradient(135deg, var(--moss-biolum) 0%, #22c55e 40%, var(--amber-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--moss-biolum);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.hero-intro-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  margin-top: 20px;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--moss-biolum);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 6. 通用区域标题 */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--amber-light);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* 7. 神木拟态参数拓扑网络 (Spirit-Tree Topology Engine) */
.topology-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.tree-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 18px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}

.tree-title-group h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tree-title-group p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.tree-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--amber-glass);
  border: 1px solid var(--amber-border);
  color: var(--amber-light);
  font-size: 0.84rem;
  font-weight: 600;
}

/* 拟态神木拓扑可视化容器 (Exquisite AI Botanical Art + Interactive Hotspots & Canvas Overlay) */
.spirit-tree-canvas-wrap {
  position: relative;
  background: #08110b;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), inset 0 0 40px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  touch-action: manipulation;
}

.spirit-tree-art-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1376 / 768;
  display: block;
  object-fit: cover;
  transition: transform 0.8s ease, filter 0.8s ease;
  filter: brightness(0.97) contrast(1.03);
}

.spirit-tree-canvas-wrap:hover .spirit-tree-art-img {
  transform: scale(1.008);
}

#spirit-tree-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

/* 交互式热区层 (Interactive Node Hotspots) */
.spirit-tree-hotspots {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
}

.acorn-hotspot {
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.acorn-hotspot:hover, .acorn-hotspot.active {
  transform: translate(-50%, -54%) scale(1.12);
}

/* 橡果靶心脉冲波环 */
.hotspot-pulse-ring {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2px solid rgba(245, 158, 11, 0.7);
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.5);
  animation: acornBeaconPulse 2.4s infinite cubic-bezier(0.24, 0, 0.38, 1);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.acorn-hotspot.active .hotspot-pulse-ring,
.acorn-hotspot:hover .hotspot-pulse-ring {
  border-color: #fbbf24;
  box-shadow: 0 0 24px #fbbf24;
}

@keyframes acornBeaconPulse {
  0% { transform: translate(-50%, -50%) scale(0.7); opacity: 0.9; }
  70% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
  100% { transform: translate(-50%, -50%) scale(1.6); opacity: 0; }
}

.hotspot-core-target {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(254, 240, 138, 0.9) 0%, rgba(245, 158, 11, 0.8) 50%, transparent 80%);
  box-shadow: 0 0 18px #f59e0b;
}

/* 橡果下挂胶囊铭牌 */
.hotspot-badge {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(13, 22, 17, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(245, 158, 11, 0.45);
  color: #ffffff;
  font-size: 11.5px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5), 0 0 12px rgba(245, 158, 11, 0.2);
  white-space: nowrap;
  transition: all 0.25s ease;
}

.acorn-hotspot:hover .hotspot-badge,
.acorn-hotspot.active .hotspot-badge {
  background: #0f2618;
  border-color: #fbbf24;
  color: #fbbf24;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6), 0 0 20px rgba(251, 191, 36, 0.5);
  transform: translateY(2px);
}

.hotspot-badge .badge-latency {
  color: var(--moss-biolum);
  font-weight: 600;
  font-size: 10.5px;
}

.acorn-hotspot:hover .hotspot-badge .badge-latency,
.acorn-hotspot.active .hotspot-badge .badge-latency {
  color: #86efac;
}

/* 伴生次级花苞热区 */
.bud-hotspot {
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 12px;
  background: rgba(10, 20, 15, 0.82);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(74, 222, 128, 0.35);
  color: #a7f3d0;
  font-size: 10px;
  font-weight: 600;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.bud-hotspot:hover {
  background: #143522;
  border-color: #4ade80;
  color: #ffffff;
  transform: translate(-50%, -52%) scale(1.08);
  box-shadow: 0 0 12px rgba(74, 222, 128, 0.4);
}

/* 浮空全息交互 HUD Tooltip */
.tree-interactive-tooltip {
  position: absolute;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -125%) scale(0.92);
  transition: opacity 0.22s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
  background: rgba(13, 20, 16, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1.5px solid rgba(245, 158, 11, 0.7);
  border-radius: 14px;
  padding: 14px 18px;
  color: #ffffff;
  font-size: 12px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.6), 0 0 28px rgba(245, 158, 11, 0.3);
  z-index: 100;
  white-space: nowrap;
  line-height: 1.6;
}

[data-theme="light"] .tree-interactive-tooltip,
:root:not([data-theme="dark"]) .tree-interactive-tooltip {
  background: rgba(255, 255, 255, 0.96);
  color: #0f1712;
  border-color: rgba(245, 158, 11, 0.85);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.2), 0 0 24px rgba(245, 158, 11, 0.25);
}

/* 树底 Tier-1 骨干物理层卡片栏 (独立布局，彻底杜绝文字被根系遮挡穿插) */
.tree-backbone-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 18px;
  position: relative;
  z-index: 5;
}

.backbone-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  transition: var(--transition-smooth);
}

.backbone-item:hover, .backbone-item.highlight {
  border-color: var(--moss-biolum);
  background: var(--bg-surface);
  box-shadow: 0 4px 16px rgba(74, 222, 128, 0.12);
  transform: translateY(-2px);
}

.backbone-pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--moss-biolum);
  box-shadow: 0 0 10px var(--moss-biolum);
  flex-shrink: 0;
  position: relative;
}

.backbone-pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1.5px solid var(--moss-biolum);
  animation: acornRingPulse 2s infinite ease-out;
}

.backbone-pulse-dot.amber {
  background: var(--amber-light);
  box-shadow: 0 0 10px var(--amber-light);
}

.backbone-pulse-dot.amber::after {
  border-color: var(--amber-light);
}

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

.backbone-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.backbone-sub {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* 拟态琥珀橡果节点交互样式 */
.tree-acorn-group {
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.3s ease;
  transform-origin: center;
}

.tree-acorn-group:hover {
  transform: scale(1.14);
  filter: drop-shadow(0 0 16px #f59e0b) brightness(1.15);
}

.tree-acorn-group.active {
  transform: scale(1.18);
  filter: drop-shadow(0 0 22px #fbbf24) brightness(1.25);
}

.acorn-pulse-ring {
  animation: acornRingPulse 2.8s infinite cubic-bezier(0.24, 0, 0.38, 1);
  transform-origin: center;
}

@keyframes acornRingPulse {
  0% {
    r: 16;
    opacity: 0.8;
  }
  70% {
    r: 26;
    opacity: 0;
  }
  100% {
    r: 28;
    opacity: 0;
  }
}

/* 漂浮发光孢子 */
.spirit-spore {
  animation: sporeBlink 3.5s ease-in-out infinite alternate;
}

@keyframes sporeBlink {
  0% {
    opacity: 0.2;
    transform: translateY(0) scale(0.8);
  }
  50% {
    opacity: 0.9;
    transform: translateY(-8px) scale(1.2);
  }
  100% {
    opacity: 0.3;
    transform: translateY(-14px) scale(0.9);
  }
}

.acorn-nodes-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.acorn-node-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.acorn-node-card:hover, .acorn-node-card.active {
  border-color: var(--amber-light);
  box-shadow: 0 0 16px var(--amber-glow);
  transform: translateY(-3px);
}

.acorn-node-capsule {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--amber-glass);
  border: 1.5px solid var(--amber-light);
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber-light);
  transition: var(--transition-smooth);
}

.acorn-node-card:hover .acorn-node-capsule,
.acorn-node-card.active .acorn-node-capsule {
  background: var(--amber-light);
  color: #0d1410;
  transform: scale(1.1);
}

.node-region {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.node-latency {
  font-size: 0.78rem;
  color: var(--moss-biolum);
  margin-top: 3px;
  font-weight: 600;
}

/* 点击橡果展开的 3D 养分脉冲实时拓扑监控板 */
.topology-inspector {
  margin-top: 24px;
  background: var(--bg-surface);
  border: 1.5px solid var(--amber-border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  box-shadow: 0 8px 30px var(--amber-glass);
  display: none;
  animation: fadeInDown 0.35s ease-out forwards;
}

.topology-inspector.active {
  display: block;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.inspector-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
}

.inspector-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--amber-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.inspector-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: center;
}

.metric-box {
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  padding: 12px;
  border: 1px solid var(--border-light);
}

.metric-val {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--moss-biolum);
}

.metric-lbl {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* 8. 产品核心优势介绍 (3个图文卡片) */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.advantage-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.advantage-card:hover {
  transform: translateY(-4px);
  border-color: var(--moss-biolum);
  box-shadow: var(--shadow-lg);
}

.advantage-icon-wrapper {
  width: 62px;
  height: 62px;
  border-radius: var(--radius-md);
  background: rgba(74, 222, 128, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--moss-biolum);
  margin-bottom: 22px;
  transition: var(--transition-smooth);
}

.advantage-card:hover .advantage-icon-wrapper {
  background: var(--accent-gradient);
  color: #ffffff;
  transform: scale(1.06);
}

.advantage-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.advantage-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

.advantage-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

.advantage-features li {
  font-size: 0.88rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.advantage-features li svg {
  color: var(--moss-biolum);
  flex-shrink: 0;
}

/* 9. 流媒体图卡 & AI 支持图卡 (Showcase Cards) */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.showcase-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.showcase-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-lg);
}

.showcase-header {
  margin-bottom: 20px;
}

.showcase-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.badge-media {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
}

.badge-ai {
  background: var(--badge-bg);
  color: var(--moss-biolum);
}

.showcase-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.showcase-desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.pill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 26px;
}

.pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--bg-elevated);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  transition: var(--transition-smooth);
}

.pill-tag:hover {
  border-color: var(--moss-biolum);
  color: var(--moss-biolum);
  transform: translateY(-2px);
}

.showcase-spec-box {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: center;
  margin-bottom: 24px;
  border: 1px solid var(--border-light);
}

.spec-item .spec-num {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--moss-biolum);
}

.spec-item .spec-name {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* 10. 清晰的套餐价格对比表 (参考网上真实机场套餐定价) */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 38px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.popular {
  border: 2px solid var(--moss-biolum);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
  z-index: 2;
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--moss-biolum) 0%, var(--amber-light) 100%);
  color: #0d1410;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 5px 18px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px var(--accent-glow);
  letter-spacing: 0.02em;
  white-space: nowrap; /* 核心：绝不分行 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-4px);
}

.pricing-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.pricing-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  min-height: 42px;
}

.pricing-price-wrap {
  margin: 22px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--amber-light);
}

.price-number {
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin-bottom: 30px;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-features li svg {
  color: var(--moss-biolum);
  flex-shrink: 0;
}

.pricing-features li.disabled {
  color: var(--text-muted);
  opacity: 0.5;
  text-decoration: line-through;
}

.pricing-features li.disabled svg {
  color: var(--text-muted);
}

/* 11. 用户真实评价 (Testimonials) */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md);
}

.star-rating {
  display: flex;
  gap: 4px;
  color: var(--amber-light);
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
  font-style: italic;
}

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

.user-avatar-acorn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
}

.user-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.user-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 12. 常见问题解答 (FAQ) */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-item:hover {
  border-color: var(--moss-biolum);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  cursor: pointer;
}

.faq-question svg {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
  color: var(--moss-biolum);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 250px;
  padding: 0 24px 20px 24px;
}

/* 13. 底部行动呼吁横幅 (Bottom Banner) */
.bottom-cta-banner {
  margin-top: 60px;
  background: linear-gradient(135deg, #122118 0%, #173022 50%, #2e2610 100%);
  border: 1px solid var(--moss-glow);
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
}

.bottom-cta-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.bottom-cta-desc {
  font-size: 1.05rem;
  color: var(--moss-light);
  margin-bottom: 28px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

/* 14. 页脚规范 (Footer) - 只保留四个标题，打开新页面展示 */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  padding: 48px 0 32px;
  transition: var(--transition-theme);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.footer-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  position: relative;
  padding: 6px 0;
}

.footer-link:hover {
  color: var(--moss-biolum);
}

.footer-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--moss-biolum);
  transition: width 0.25s ease;
}

.footer-link:hover::after {
  width: 100%;
}

.footer-bottom {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
}

/* 15. 子页面与推荐资讯专用样式 */
.subpage-hero {
  padding: 60px 0 40px;
  text-align: center;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
}

.subpage-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.subpage-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

.legal-content-wrap {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  margin: 40px auto;
  max-width: 900px;
  box-shadow: var(--shadow-sm);
}

.legal-section {
  margin-bottom: 36px;
}

.legal-section:last-child {
  margin-bottom: 0;
}

.legal-heading {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.legal-heading svg {
  color: var(--moss-biolum);
}

.legal-text {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.legal-list {
  padding-left: 20px;
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

.legal-highlight-box {
  background: var(--bg-elevated);
  border-left: 4px solid var(--moss-biolum);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 18px 0;
}

/* 资讯文章卡片网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin: 40px 0;
}

.article-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--amber-light);
  box-shadow: var(--shadow-lg);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--amber-light);
  margin-bottom: 14px;
}

.article-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 12px;
}

.article-excerpt {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

/* 15.1 文章正文详情排版规范 (Long-form SEO Article Typography) */
.article-detail-wrap {
  max-width: 920px;
  margin: 36px auto 60px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  box-shadow: var(--shadow-sm);
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-breadcrumb a:hover {
  color: var(--moss-biolum);
}

.article-header-wrap {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.article-main-title {
  font-size: 2.15rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-primary);
  margin: 14px 0 16px;
  letter-spacing: -0.01em;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.article-meta-bar span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 目录卡片 (Table of Contents) */
.toc-box {
  background: var(--bg-elevated);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 28px 0 36px;
}

.toc-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--amber-light);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-list li {
  font-size: 0.95rem;
}

.toc-list a {
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-smooth);
}

.toc-list a:hover {
  color: var(--moss-biolum);
  transform: translateX(4px);
}

/* 正文深度排版 */
.article-body-content {
  color: var(--text-primary);
  font-size: 1.02rem;
  line-height: 1.85;
}

.article-body-content h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--border-light);
  position: relative;
}

.article-body-content h2::after {
  content: '';
  position: absolute;
  bottom: -1.5px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--moss-biolum);
}

.article-body-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 28px 0 12px;
}

.article-body-content p {
  margin-bottom: 18px;
  color: var(--text-secondary);
}

.article-body-content strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-body-content ul, .article-body-content ol {
  padding-left: 24px;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.article-body-content li {
  margin-bottom: 8px;
}

/* 高亮提示框 */
.callout-box {
  background: var(--bg-elevated);
  border-left: 4px solid var(--moss-biolum);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 18px 22px;
  margin: 24px 0;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.75;
}

.callout-box.tip {
  border-left-color: var(--amber-light);
  background: rgba(245, 158, 11, 0.05);
}

.callout-box strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 6px;
}

/* 数据与对比表格 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.94rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.article-table th {
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 700;
  padding: 14px 18px;
  border-bottom: 1.5px solid var(--border-light);
  white-space: nowrap;
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-table tr:hover td {
  background: rgba(74, 222, 128, 0.03);
}

/* 文章内嵌内链卡片 */
.internal-link-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.08) 0%, rgba(245, 158, 11, 0.06) 100%);
  border: 1px solid var(--moss-glow);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 32px 0;
  gap: 16px;
  transition: var(--transition-smooth);
}

.internal-link-card:hover {
  transform: translateY(-2px);
  border-color: var(--moss-biolum);
  box-shadow: var(--shadow-sm);
}

.internal-link-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.internal-link-info p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* 正文 FAQ 区域 */
.article-faq-wrap {
  margin: 48px 0 36px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border-light);
}

.article-faq-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-faq-item {
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-light);
}

.article-faq-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.article-faq-q {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.article-faq-q::before {
  content: 'Q:';
  color: var(--amber-light);
  font-weight: 800;
}

.article-faq-a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  padding-left: 24px;
}

/* 相关阅读区域 */
.related-reading-wrap {
  margin-top: 50px;
  border-top: 1.5px solid var(--border-light);
  padding-top: 36px;
}

.related-reading-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.related-item-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: var(--transition-smooth);
}

.related-item-card:hover {
  border-color: var(--moss-biolum);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.related-item-card h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 6px;
}

.related-item-card p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 16. 移动端媒体查询 (@media) 保证完美单栏与舒适手指点按 */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .advantages-grid,
  .pricing-grid,
  .testimonials-grid,
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .acorn-nodes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .pricing-card.popular {
    transform: none;
  }
  .pricing-card.popular:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  
  .header-inner {
    height: 64px;
  }

  .brand-logo-full-img {
    height: 30px;
  }

  .logo-cn-title {
    font-size: 1.15rem;
  }

  .nav-desktop {
    display: none; /* 移动端保持纯净极简 */
  }

  .hero-section {
    padding: 48px 0 36px;
  }

  .hero-title {
    font-size: clamp(1.1rem, 4.4vw, 1.85rem);
    line-height: 1.25;
    white-space: nowrap; /* 保持单行绝不折行 */
  }

  .popular-badge {
    font-size: 0.76rem;
    padding: 4px 14px;
    white-space: nowrap;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-intro-text {
    font-size: 0.95rem;
    margin-bottom: 28px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-cta-group .btn {
    width: 100%;
    padding: 14px 20px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 18px;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .acorn-nodes-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .inspector-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .advantages-grid,
  .showcase-grid,
  .pricing-grid,
  .testimonials-grid,
  .articles-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .advantage-card,
  .showcase-card,
  .pricing-card,
  .testimonial-card,
  .topology-container {
    padding: 26px 20px;
  }

  .pricing-card.popular {
    order: -1; /* 移动端优先呈现爆款推荐 */
  }

  .tree-backbone-bar {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  #spirit-tree-canvas {
    height: 420px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 18px;
    text-align: center;
  }

  .legal-content-wrap,
  .article-detail-wrap {
    padding: 28px 18px;
    margin: 20px auto;
  }

  .article-main-title {
    font-size: 1.5rem;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .internal-link-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .internal-link-card .btn {
    width: 100%;
  }

  .bottom-cta-banner {
    padding: 36px 20px;
  }

  .bottom-cta-title {
    font-size: 1.6rem;
  }

  .bottom-cta-banner .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: clamp(0.92rem, 4.4vw, 1.25rem);
    white-space: nowrap;
  }
  .popular-badge {
    font-size: 0.72rem;
    padding: 3px 12px;
    white-space: nowrap;
  }
}