/* ====================================================================
   龙猫云 (longmaoyun.monster) 全站样式表
   高表现力与丰富色彩动态版 (Vibrant Tech & Dynamic Motion Edition)
   特点：高辨识度多色域视觉、动态呼吸雷达、交互式计费切换、精致仪表盘卡片
   ==================================================================== */

:root {
  --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  
  /* 多元高精调色体系 */
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  
  /* 主题色系：极客海蓝 + 翡翠青 + 极光紫 + 珊瑚彩 */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-tint: #eff6ff;
  --color-primary-border: #bfdbfe;
  
  --color-emerald: #10b981;
  --color-emerald-tint: #ecfdf5;
  --color-emerald-border: #a7f3d0;
  
  --color-violet: #6366f1;
  --color-violet-tint: #eef2ff;
  --color-violet-border: #c7d2fe;
  
  --color-cyan: #06b6d4;
  --color-cyan-tint: #ecfeff;
  --color-cyan-border: #a5f3fc;

  --color-rose: #f43f5e;
  --color-rose-tint: #fff1f2;
  --color-rose-border: #fecdd3;

  --color-amber: #f59e0b;
  --color-amber-tint: #fffbeb;
  --color-amber-border: #fde68a;

  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 20px -3px rgba(37, 99, 235, 0.18);

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --max-width: 1160px;
  --article-width: 860px;
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-stack);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img, svg {
  vertical-align: middle;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.15s ease;
}

a:hover {
  color: var(--color-primary-hover);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 布局容器 */
.site-container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.article-container {
  width: 100%;
  max-width: var(--article-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 顶部导航：高透磨砂与动态浮现 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.2s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.06);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.brand-logo:hover {
  color: var(--color-primary);
}

.brand-logo svg,
.brand-logo img {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.brand-logo:hover svg {
  transform: rotate(-4deg) scale(1.05);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 6px 0;
  position: relative;
  transition: color 0.15s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: all 0.2s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 22px;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff !important;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
  transition: all 0.2s ease;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.menu-toggle {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px;
  cursor: pointer;
  color: var(--text-main);
  min-height: 44px;
  min-width: 44px;
}

/* 按钮与交互规范 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  padding: 0 32px;
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  color: #ffffff !important;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  transition: all 0.2s ease;
  min-width: 140px;
  min-height: 44px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  padding: 0 28px;
  background-color: var(--bg-surface);
  color: var(--text-main) !important;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  min-width: 130px;
  min-height: 44px;
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary) !important;
  background-color: var(--color-primary-tint);
  transform: translateY(-2px);
}

/* 呼吸动画与状态徽章 */
@keyframes status-pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-emerald);
  border-radius: 50%;
  display: inline-block;
  animation: status-pulse 2s infinite ease-in-out;
}

/* 区块与版心 */
.section-wrapper {
  padding: 88px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.section-wrapper:last-of-type {
  border-bottom: none;
}

.section-header {
  max-width: 760px;
  margin: 0 auto 52px auto;
  text-align: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-tint);
  border: 1px solid var(--color-primary-border);
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.025em;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ====================================================================
   Hero 首屏：生动的立体动态工坊与节点状态面板
   ==================================================================== */

.hero-section {
  padding: 80px 0 72px 0;
  background: radial-gradient(circle at 50% 10%, #ffffff 0%, #f8fafc 100%);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
  position: relative;
}

.hero-inner {
  max-width: 920px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.hero-tag-badge {
  background-color: var(--color-emerald-tint);
  color: var(--color-emerald);
  border: 1px solid var(--color-emerald-border);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero-title {
  font-size: 3.1rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.2;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 38px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

/* 实时动态节点雷达监控面板 (Dashboard Widget) */
.hero-dashboard {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 20px 24px;
  margin: 0 auto 36px auto;
  max-width: 820px;
  text-align: left;
}

.hero-dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.dashboard-title-box {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.dashboard-live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--color-emerald);
  font-weight: 600;
  background-color: var(--color-emerald-tint);
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--color-emerald-border);
}

.dashboard-btn-ping {
  background-color: var(--color-primary-tint);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
}

.dashboard-btn-ping:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.dashboard-nodes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.node-chip {
  background-color: var(--bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.2s ease;
}

.node-chip:hover {
  border-color: var(--color-primary);
  background-color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.node-chip-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.node-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
}

.node-ping {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-emerald);
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.node-ping-unit {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

.node-status-bar {
  height: 4px;
  width: 100%;
  background-color: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
}

.node-status-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #06b6d4);
  border-radius: 999px;
  width: 98%;
}

/* 信任底栏 */
.hero-features-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.hero-bar-item {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

.hero-bar-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ====================================================================
   1. Features 核心特性：多色彩卡片与微交互
   ==================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 34px 30px;
  position: relative;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.feature-card:nth-child(1)::before { background: linear-gradient(90deg, #10b981, #059669); }
.feature-card:nth-child(2)::before { background: linear-gradient(90deg, #2563eb, #3b82f6); }
.feature-card:nth-child(3)::before { background: linear-gradient(90deg, #f43f5e, #ec4899); }
.feature-card:nth-child(4)::before { background: linear-gradient(90deg, #8b5cf6, #6366f1); }

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

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.feature-card:nth-child(1) .feature-icon-box { background-color: var(--color-emerald-tint); color: var(--color-emerald); border: 1px solid var(--color-emerald-border); }
.feature-card:nth-child(2) .feature-icon-box { background-color: var(--color-primary-tint); color: var(--color-primary); border: 1px solid var(--color-primary-border); }
.feature-card:nth-child(3) .feature-icon-box { background-color: var(--color-rose-tint); color: var(--color-rose); border: 1px solid var(--color-rose-border); }
.feature-card:nth-child(4) .feature-icon-box { background-color: var(--color-violet-tint); color: var(--color-violet); border: 1px solid var(--color-violet-border); }

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

.feature-card-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 18px;
}

.feature-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-pill {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--color-border);
}

/* ====================================================================
   2. 流媒体支持模块：专有色彩氛围
   ==================================================================== */

.media-section {
  background-color: #ffffff;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.media-item {
  background-color: var(--bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.2s ease;
}

.media-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  background-color: #ffffff;
}

.media-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.media-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.media-icon {
  width: 40px;
  height: 40px;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.media-item:nth-child(1) .media-icon { color: #e50914; border-color: #fca5a5; }
.media-item:nth-child(2) .media-icon { color: #ff0000; border-color: #fca5a5; }
.media-item:nth-child(3) .media-icon { color: #0063e5; border-color: #93c5fd; }
.media-item:nth-child(4) .media-icon { color: #00a8e1; border-color: #7dd3fc; }
.media-item:nth-child(5) .media-icon { color: #1db954; border-color: #86efac; }
.media-item:nth-child(6) .media-icon { color: #1e293b; border-color: #cbd5e1; }

.media-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.media-badge-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}

.media-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ====================================================================
   3. 使用场景卡 Scenarios：实景测试标签与动态边框
   ==================================================================== */

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.scenario-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
  position: relative;
}

.scenario-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

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

.scenario-badge {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
  border-radius: var(--radius-xs);
  border: 1px solid var(--color-primary-border);
}

.scenario-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.scenario-device {
  font-size: 0.9rem;
  color: var(--color-emerald);
  font-weight: 600;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-emerald-tint);
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--color-emerald-border);
}

.scenario-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ====================================================================
   4. 定价模块 Pricing：交互式月付/年付切换器与璀璨推荐卡
   ==================================================================== */

.pricing-section {
  background-color: #ffffff;
}

/* 交互式周期切换器 */
.pricing-switcher-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 44px;
}

.pricing-switcher {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-subtle);
  border: 1px solid var(--color-border);
  padding: 4px;
  border-radius: 999px;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

.pricing-tab-btn {
  border: none;
  background: none;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.pricing-tab-btn.active {
  background-color: #ffffff;
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.pricing-save-badge {
  font-size: 0.78rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  padding: 3px 10px;
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.3);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background-color: var(--bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 38px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

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

.pricing-card.recommended {
  background-color: #ffffff;
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.pricing-card.recommended:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 25px -5px rgba(37, 99, 235, 0.15), 0 8px 10px -6px rgba(37, 99, 235, 0.1);
}

.pricing-badge-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 4px 18px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.pricing-tier-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}

.pricing-tier-target {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 22px;
  min-height: 40px;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.pricing-currency {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary);
}

.pricing-amount {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1;
}

.pricing-period {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.pricing-features-list {
  list-style: none;
  margin-bottom: 34px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.94rem;
  color: var(--text-main);
}

.pricing-feature-item svg {
  color: var(--color-emerald);
  flex-shrink: 0;
  margin-top: 3px;
}

.pricing-card .btn-primary,
.pricing-card .btn-secondary {
  width: 100%;
}

/* ====================================================================
   5. AI 支持模块：现代科技多渐变格调
   ==================================================================== */

.ai-section {
  background: radial-gradient(circle at 50% 50%, #ffffff 0%, #f1f5f9 100%);
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ai-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  transition: all 0.2s ease;
  position: relative;
}

.ai-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-violet-border);
}

.ai-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ai-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background-color: var(--color-violet-tint);
  color: var(--color-violet);
  border: 1px solid var(--color-violet-border);
}

.ai-card-desc {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ====================================================================
   6. FAQ 常见问题：精巧折叠与微过渡
   ==================================================================== */

.faq-section {
  background-color: #ffffff;
}

.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--bg-page);
  transition: all 0.2s ease;
}

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

.faq-item.active {
  background-color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 20px 22px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--text-light);
  transition: transform 0.25s ease, color 0.25s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  padding: 0 22px;
}

.faq-item.active .faq-answer {
  max-height: 320px;
  padding: 0 22px 22px 22px;
}

.faq-answer p {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ====================================================================
   Final CTA 尾部转化与页脚
   ==================================================================== */

.final-cta-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #2563eb 100%);
  color: #ffffff;
  padding: 88px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta-inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.final-cta-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: -0.025em;
  margin-bottom: 18px;
}

.final-cta-desc {
  font-size: 1.15rem;
  color: #cbd5e1;
  line-height: 1.65;
  margin-bottom: 36px;
}

.final-cta-section .btn-primary {
  background: #ffffff;
  color: #1e3a8a !important;
  font-weight: 800;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.final-cta-section .btn-primary:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.3);
}

.site-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: 52px 0 36px 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

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

.footer-disclosure {
  font-size: 0.88rem;
  color: var(--text-light);
  background-color: var(--bg-subtle);
  padding: 8px 18px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--color-border);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* 移动端吸底 CTA */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 10px 16px;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-border);
  z-index: 99;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.06);
}

.mobile-sticky-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 480px;
  margin: 0 auto;
}

.mobile-sticky-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.mobile-sticky-btn {
  height: 40px;
  padding: 0 20px;
  font-size: 0.92rem;
}

/* ====================================================================
   文章页与指南页专属样式
   ==================================================================== */

.breadcrumbs {
  padding: 24px 0 12px 0;
  font-size: 0.88rem;
  color: var(--text-light);
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

.breadcrumbs-separator {
  margin: 0 8px;
  color: var(--color-border);
}

.page-header {
  padding: 24px 0 36px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
}

.page-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 14px;
}

.page-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.88rem;
  color: var(--text-light);
}

.page-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.prose-content {
  color: var(--text-main);
  font-size: 1.05rem;
  line-height: 1.8;
}

.prose-lead {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--text-muted);
  padding: 22px 24px;
  background-color: var(--color-primary-tint);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-xs);
  margin-bottom: 36px;
}

.prose-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 44px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.prose-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 28px;
  margin-bottom: 12px;
}

.prose-content p {
  margin-bottom: 20px;
}

.prose-content ul,
.prose-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

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

.prose-content strong {
  color: var(--text-main);
  font-weight: 700;
}

.prose-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.95rem;
  background-color: #ffffff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.prose-table th,
.prose-table td {
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.prose-table th {
  background-color: var(--bg-subtle);
  font-weight: 700;
  color: var(--text-main);
}

.prose-callout {
  padding: 20px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-subtle);
  border: 1px solid var(--color-border);
  margin: 28px 0;
}

.prose-callout-title {
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.article-end-cta {
  background-color: #ffffff;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 38px 30px;
  text-align: center;
  margin: 48px 0;
  box-shadow: var(--shadow-md);
}

.article-end-cta-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.article-end-cta-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.related-posts {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--color-border);
}

.related-posts-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
}

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

.related-post-card {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  transition: all 0.2s ease;
}

.related-post-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.related-post-card h4 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text-main);
}

.related-post-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
}

/* 指南中心列表页 Guides Grid */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 64px;
}

.guide-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.guide-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.guide-tag {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 12px;
}

.guide-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.4;
}

.guide-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.guide-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--text-light);
}

/* 网站地图样式 */
.sitemap-group {
  margin-bottom: 36px;
}

.sitemap-group h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.sitemap-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.sitemap-list li a {
  font-size: 0.98rem;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sitemap-list li a:hover {
  color: var(--color-primary);
}

/* ====================================================================
   响应式断点
   ==================================================================== */

@media (max-width: 1024px) {
  .features-grid,
  .media-grid,
  .pricing-grid,
  .scenarios-grid,
  .guides-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hero-features-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-card.recommended {
    transform: none;
  }
}

@media (max-width: 768px) {
  .site-header-inner {
    height: 60px;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 20px;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow-lg);
  }

  .site-nav.open {
    display: flex;
  }

  .nav-cta {
    width: 100%;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

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

  .hero-cta-group a {
    width: 100%;
  }

  .dashboard-nodes-grid,
  .hero-features-bar,
  .features-grid,
  .media-grid,
  .pricing-grid,
  .scenarios-grid,
  .ai-grid,
  .guides-grid,
  .related-posts-grid,
  .sitemap-list {
    grid-template-columns: 1fr;
  }

  .mobile-sticky-cta {
    display: block;
  }

  body {
    padding-bottom: 64px;
  }

  .prose-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}