/* ============================================
   企业官网 — 深空探索 + 智慧之光
   Design System & Global Styles
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Primary: Deep Space */
  --color-bg-deepest: #050a1a;
  --color-bg-deep: #0a0e27;
  --color-bg-mid: #101638;
  --color-bg-card: rgba(16, 22, 56, 0.6);

  /* Accent: Golden Orange */
  --color-accent: #f5a623;
  --color-accent-light: #ffc966;
  --color-accent-dark: #d4891a;
  --color-accent-glow: rgba(245, 166, 35, 0.3);

  /* Text */
  --color-text-primary: #f0f2f8;
  --color-text-secondary: rgba(240, 242, 248, 0.7);
  --color-text-muted: rgba(240, 242, 248, 0.45);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: 20px;

  /* Shadows */
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 24px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 200ms ease-in-out;
  --transition-normal: 300ms ease-out;
  --transition-slow: 600ms ease-out;

  /* Spacing */
  --header-height: 64px;
  --section-padding: 100px 0;
  --content-width: 1200px;

  /* Fonts */
  --font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* Success/Error */
  --color-success: #34d399;
  --color-error: #f87171;
  --color-warning: #fbbf24;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg-deepest);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-light);
}

img {
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

/* ---------- Utility Classes ---------- */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
  position: relative;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  margin-bottom: 60px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.text-accent {
  color: var(--color-accent);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.01em;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  box-shadow: 0 4px 16px var(--color-accent-glow);
}

.btn-primary:hover {
  box-shadow: 0 8px 32px var(--color-accent-glow);
  transform: translateY(-2px);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-outline:hover {
  background: rgba(245, 166, 35, 0.1);
  transform: translateY(-2px);
  color: var(--color-accent-light);
}

.btn-ghost {
  background: var(--glass-bg);
  color: var(--color-text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.125rem;
}

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: 32px;
  transition: all var(--transition-normal);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: all var(--transition-normal);
  background: transparent;
}

.header.scrolled {
  background: rgba(10, 14, 39, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #fff;
}

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

.nav a {
  color: var(--color-text-secondary);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  transition: color var(--transition-fast);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
  border-radius: 1px;
}

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

.nav a:hover::after {
  transform: scaleX(1);
}

.nav a.active {
  color: var(--color-accent);
}

.nav a.active::after {
  transform: scaleX(1);
}

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

.header-actions .login-link {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  padding: 8px 12px;
  transition: color var(--transition-fast);
}

.header-actions .login-link:hover {
  color: var(--color-text-primary);
}

/* ─── 点赞按钮（列表卡 + 洞察详情共用）────────────────
   原定义在 insights.html.tera 里的局部 <style>，详情页不加载导致按钮回退浏览器默认。
   提到全局 app.css，保证跨页一致；详情页再用 `.like-btn--lg` 修饰放大。 */
.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--color-text-muted);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  line-height: 1.4;
}
.like-btn:hover {
  border-color: rgba(245, 166, 35, 0.4);
  color: var(--color-accent);
  transform: translateY(-1px);
}
.like-btn .like-heart {
  font-size: 0.875rem;
  line-height: 1;
  transition: transform var(--transition-fast);
}
.like-btn:hover .like-heart {
  transform: scale(1.18);
}
.like-btn.is-liked {
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.16), rgba(255, 107, 53, 0.12));
  border-color: rgba(245, 166, 35, 0.5);
  color: #ffb86c;
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.06);
}
.like-btn.is-liked .like-heart {
  color: #ff6b35;
  animation: like-heart-pop 0.35s ease-out;
}
@keyframes like-heart-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.35); }
  100% { transform: scale(1.1); }
}

/* 详情页放大版：文字 + padding 更舒展，作为文末主要交互入口 */
.like-btn--lg {
  padding: 10px 22px;
  font-size: 0.9375rem;
  border-radius: 24px;
  gap: 10px;
}
.like-btn--lg .like-heart { font-size: 1.2rem; }
.like-btn--lg .like-count { font-weight: 600; letter-spacing: 0.02em; }
.like-btn--lg .like-label {
  color: var(--color-text-secondary);
  font-weight: 500;
}
.like-btn--lg.is-liked .like-label { color: var(--color-accent); }

/* 8.10：Header 已登录态 —— 头像 + 昵称下拉 */
.user-menu {
  position: relative;
}
.user-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px 5px 6px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--color-text-primary);
  cursor: pointer;
  font: inherit;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.user-trigger:hover,
.user-trigger.is-open {
  border-color: rgba(245, 166, 35, 0.35);
  background: rgba(245, 166, 35, 0.06);
}
.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.user-avatar-fallback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.45), rgba(99, 102, 241, 0.45));
  color: #fff;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
}
.user-nickname {
  font-size: 0.875rem;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-chevron {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-left: 2px;
}
.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--color-bg-deep, #0b0e16);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  padding: 6px;
  z-index: 200;
}
.user-dropdown a {
  display: block;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.user-dropdown a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-primary);
}
.user-dropdown hr {
  border: none;
  border-top: 1px solid var(--glass-border);
  margin: 4px 0;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(245, 166, 35, 0.08), transparent 60%),
              radial-gradient(ellipse 60% 40% at 20% 80%, rgba(99, 102, 241, 0.06), transparent),
              radial-gradient(ellipse 60% 40% at 80% 20%, rgba(14, 165, 233, 0.06), transparent);
  z-index: 1;
}

/* Particle canvas background */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 0 24px;
}

.hero-headline {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero-sub {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 48px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

/* Dynamic stat cards */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 12px;
  padding: 20px 28px;
  text-align: center;
  min-width: 180px;
  transition: all var(--transition-normal);
}

.stat-card:hover {
  border-color: var(--color-accent-glow);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.15);
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-accent);
  display: block;
  line-height: 1.2;
}

.stat-number .suffix {
  font-size: 1.25rem;
  color: var(--color-accent-light);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  animation: float 2s ease-in-out infinite;
}

.scroll-indicator .arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---------- Feature Cards (次屏) ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  text-align: center;
  padding: 48px 32px;
  cursor: pointer;
}

.feature-card .icon-wrap {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.12), rgba(245, 166, 35, 0.04));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  transition: all var(--transition-normal);
}

.feature-card:hover .icon-wrap {
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.25), rgba(245, 166, 35, 0.1));
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 0 0 32px var(--color-accent-glow);
}

.feature-card h3 {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ---------- Product Showcase ---------- */
.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.showcase-text h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.showcase-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.showcase-list-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.showcase-list-item .item-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.15), transparent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--color-accent);
}

.showcase-list-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.showcase-list-item p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.showcase-visual {
  position: relative;
  perspective: 1000px;
}

.showcase-visual .mockup {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-slow);
  background: var(--color-bg-mid);
  aspect-ratio: 16/10;
  overflow: hidden;
}

.showcase-visual:hover .mockup {
  transform: rotateY(-5deg) rotateX(3deg) scale(1.02);
}

.mockup-content {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-bg-deep), var(--color-bg-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ---------- Trust / Data Preview ---------- */
.trust-section {
  background: linear-gradient(180deg, var(--color-bg-deepest), var(--color-bg-deep));
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.chart-card {
  padding: 28px;
  min-height: 300px;
}

.chart-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-placeholder {
  width: 100%;
  height: 220px;
  position: relative;
  overflow: hidden;
}

/* Animated chart bars */
.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 100%;
  padding-top: 20px;
}

.chart-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--color-accent), rgba(245, 166, 35, 0.3));
  border-radius: 4px 4px 0 0;
  transition: height 1s ease-out;
  position: relative;
  min-height: 0;
}

.chart-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent-light);
  border-radius: 4px;
}

/* Animated line chart */
.chart-line-container {
  width: 100%;
  height: 100%;
}

.chart-line-container svg {
  width: 100%;
  height: 100%;
}

.chart-line {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-area {
  fill: url(#areaGradient);
}

/* Pie chart */
.pie-container {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 100%;
}

.pie-chart {
  width: 180px;
  height: 180px;
  min-width: 180px;
}

.pie-legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pie-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.pie-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  min-width: 10px;
}

/* ---------- Video Cards (Insights) ---------- */
.video-carousel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  border-radius: 16px;
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.video-card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-bg-mid), var(--color-bg-deep));
}

.video-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.video-card:hover .video-card-thumb img {
  transform: scale(1.05);
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(245, 166, 35, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.video-play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}

.video-card:hover .video-play-btn {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 0 32px var(--color-accent-glow);
}

.video-card-lock {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-card-info {
  padding: 20px;
}

.video-card-info h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 12px;
}

/* B-9：列表卡"关联报告 / 推荐人群"行 */
.video-card-extra {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-card-label {
  display: inline-block;
  font-weight: 600;
  color: var(--color-accent);
  margin-right: 6px;
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

/* ---------- Pricing Cards ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  padding: 40px;
  text-align: center;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-accent);
  background: linear-gradient(180deg, rgba(245, 166, 35, 0.08), var(--glass-bg));
}

.pricing-card.featured::before {
  content: '推荐';
  position: absolute;
  top: -1px;
  right: 24px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 0 0 8px 8px;
}

.pricing-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  margin: 16px 0;
}

.pricing-card .price span {
  font-size: 1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.pricing-list {
  text-align: left;
  margin: 24px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.pricing-list li .check {
  color: var(--color-success);
  font-weight: 700;
}

.pricing-list li .cross {
  color: var(--color-text-muted);
}

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

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-deep);
  border-top: 1px solid var(--glass-border);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 16px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--color-text-primary);
}

.footer-col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  padding: 4px 0;
  transition: all var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--color-bg-mid);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px;
  max-width: 440px;
  width: 90%;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  position: relative;
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 8px;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text-primary);
}

.modal h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
}

/* ---------- Form Elements ---------- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--color-text-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
  outline: none;
  font-family: var(--font-body);
}

.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 32px;
}

.tab {
  flex: 1;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-muted);
  background: transparent;
  border: none;
}

.tab.active {
  background: var(--glass-bg);
  color: var(--color-accent);
  border: 1px solid var(--glass-border);
}

.tab:hover:not(.active) {
  color: var(--color-text-primary);
}

/* ---------- Rich Text Editor（2026-04-23 admin block 正文）---------- */
.rt-wrap { border: 1px solid var(--glass-border); border-radius: 8px; background: rgba(0,0,0,0.25); }
.rt-toolbar {
    display: flex; flex-wrap: wrap; gap: 4px;
    padding: 6px 8px;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255,255,255,0.03);
    border-radius: 8px 8px 0 0;
}
.rt-toolbar button {
    padding: 4px 8px; font-size: 0.8125rem;
    background: transparent; border: 1px solid transparent;
    border-radius: 4px; color: var(--color-text-secondary);
    cursor: pointer; min-width: 28px;
}
.rt-toolbar button:hover { background: rgba(255,255,255,0.06); color: var(--color-text-primary); }
.rt-toolbar .rt-sep { width: 1px; background: var(--glass-border); margin: 2px 4px; }
.rt-toolbar .rt-color-swatch {
    width: 20px; height: 20px;
    border-radius: 4px;
    border: 1px solid var(--glass-border);
    cursor: pointer;
    padding: 0;
}
.rt-editor {
    min-height: 220px; max-height: 480px; overflow-y: auto;
    padding: 14px 16px;
    font-size: 0.9375rem; line-height: 1.7;
    color: var(--color-text-primary);
    outline: none;
}
.rt-editor:empty::before {
    content: attr(data-placeholder);
    color: var(--color-text-muted);
}
.rt-editor p { margin: 0 0 10px; }
.rt-editor ul, .rt-editor ol { padding-left: 24px; margin: 0 0 10px; }
.rt-editor img { max-width: 100%; border-radius: 6px; margin: 6px 0; }
.rt-editor a { color: var(--color-accent); text-underline-offset: 3px; }

/* ---------- Tabs Sticky（REQ-#29 2026-04-23）----------
 * 智库 /videos、资源中心 /resources、未来可扩展任意 tab 容器。
 * 注意：`.reveal` 含 `transform` 会破坏 sticky，这里不能与 .reveal 叠加。
 * 父链上任何 transform / filter / contain 也会使 sticky 失效。
 *
 * 视觉策略：只用深底 + 磨砂覆盖原 `.tabs` 的浅 rgba，**不加边框和阴影**（避免
 * "框里套框"）；靠 backdrop-filter 把下方内容糊掉形成自然分层。
 */
.tabs-sticky {
  position: sticky;
  top: var(--header-height);
  z-index: 20;
  background: rgba(10, 11, 14, 0.82);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
}

/* ---------- Tags ---------- */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(245, 166, 35, 0.1);
  color: var(--color-accent);
  border: 1px solid rgba(245, 166, 35, 0.2);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: rgba(245, 166, 35, 0.2);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  z-index: 3000;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-normal);
  backdrop-filter: blur(16px);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.toast-success {
  background: rgba(52, 211, 153, 0.15);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: var(--color-success);
}

.toast-error {
  background: rgba(248, 113, 113, 0.15);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--color-error);
}

/* ---------- Dashboard Specific ---------- */
.dashboard-grid {
  display: grid;
  grid-template-columns: 220px 1fr 220px;
  gap: 20px;
  min-height: calc(100vh - var(--header-height) - 80px);
}

.dashboard-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.dashboard-main {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.dashboard-stat {
  padding: 20px;
  text-align: center;
}

.dashboard-stat .stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.dashboard-stat .stat-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.dashboard-chart {
  padding: 24px;
  flex: 1;
}

.dashboard-chart h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text-secondary);
}

/* Gauge chart */
.gauge-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

/* Testimonial scroll */
.testimonial-scroll {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 300px;
  overflow: hidden;
}

.testimonial-item {
  padding: 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  border-left: 2px solid var(--color-accent-glow);
}

.testimonial-item .author {
  margin-top: 6px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

/* ---------- Resource Cards ---------- */
.resource-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}

.resource-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.resource-card {
  border-radius: 16px;
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  cursor: pointer;
}

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

.resource-card-cover {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-bg-mid), var(--color-bg-deep));
  position: relative;
  overflow: hidden;
}

.resource-card-cover .type-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(245, 166, 35, 0.9);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.resource-card-body {
  padding: 20px;
}

.resource-card-body h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.resource-card-body p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.resource-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-section h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--glass-border);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 10px 14px;
  transition: border-color var(--transition-fast);
}

.search-box:focus-within {
  border-color: var(--color-accent);
}

.search-box input {
  flex: 1;
  background: none;
  border: none;
  color: var(--color-text-primary);
  outline: none;
  font-size: 0.875rem;
}

.search-box .search-icon {
  color: var(--color-text-muted);
}

.hot-article {
  display: flex;
  gap: 4px;
  align-items: flex-start;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.hot-article:hover {
  color: var(--color-accent);
}

.hot-article .rank {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 24px;
}

.hot-article .title {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- About Page ---------- */
.about-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  text-align: center;
  padding: 32px 20px;
}

.team-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.2), rgba(99, 102, 241, 0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  border: 2px solid var(--glass-border);
  transition: all var(--transition-normal);
}

.team-card:hover .team-avatar {
  border-color: var(--color-accent);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

.team-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.8125rem;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.team-card .bio {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -34px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg-deepest);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

.timeline-item .year {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---------- NProgress style loading bar ---------- */
.page-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  z-index: 9999;
  transition: width 0.4s ease;
  box-shadow: 0 0 8px var(--color-accent-glow);
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-normal);
  color: var(--color-text-secondary);
  font-size: 1.25rem;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: rgba(245, 166, 35, 0.15);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* ---------- Video Hero (Insights page) ---------- */
.video-hero {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 21/9;
  background: linear-gradient(135deg, var(--color-bg-mid), var(--color-bg-deep));
  margin-bottom: 48px;
}

.video-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 30%, rgba(5, 10, 26, 0.85));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 40px;
}

.video-hero-overlay h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.video-hero-overlay .meta {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 20px;
}

.video-hero-overlay .actions {
  display: flex;
  gap: 12px;
}

/* Filter bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.filter-select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--color-text-secondary);
  padding: 8px 16px;
  font-size: 0.875rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23999' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  outline: none;
  font-family: var(--font-body);
}

.filter-select:focus {
  border-color: var(--color-accent);
}

.filter-select option,
select.form-input option,
.role-select option {
  background: #1a1f3a;
  color: #f0f2f8;
}

/* ---------- Demo Section ---------- */
.demo-frame {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  overflow: hidden;
  background: var(--color-bg-mid);
  position: relative;
}

.demo-toolbar {
  height: 40px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 8px;
}

.demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.demo-dot.red { background: #ff5f57; }
.demo-dot.yellow { background: #febc2e; }
.demo-dot.green { background: #28c840; }

.demo-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  height: calc(100% - 40px);
}

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase { grid-template-columns: 1fr; gap: 40px; }
  .charts-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; }
  .video-carousel { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-sidebar { display: none; }
  .resource-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

@media (max-width: 767px) {
  :root {
    --header-height: 56px;
    --section-padding: 64px 0;
  }

  .nav { display: none; }
  .menu-toggle { display: block; }

  .hero-headline { font-size: 2.25rem; }
  .hero-sub { font-size: 1rem; }
  .hero-stats { gap: 12px; }
  .stat-card { min-width: 140px; padding: 16px 20px; }
  .stat-number { font-size: 1.75rem; }

  .section-title { font-size: 1.75rem; }
  .section-subtitle { font-size: 1rem; }

  .features-grid { grid-template-columns: 1fr; }
  .video-carousel { grid-template-columns: 1fr; }
  .resource-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .team-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .dashboard-grid { grid-template-columns: 1fr; }

  .video-hero { aspect-ratio: 16/9; }
  .video-hero-overlay h2 { font-size: 1.25rem; }

  .hero-actions { flex-direction: column; align-items: center; }

  .filter-bar { flex-direction: column; align-items: stretch; }

  /* Mobile menu */
  .mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 80%;
    max-width: 320px;
    background: var(--color-bg-deep);
    z-index: 1500;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    padding: 64px 24px 24px;
    border-left: 1px solid var(--glass-border);
  }

  .mobile-menu.open {
    transform: translateX(0);
  }

  .mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1400;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
  }

  .mobile-menu-overlay.open {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-menu a {
    display: block;
    padding: 14px 0;
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .mobile-menu a:hover,
  .mobile-menu a.active {
    color: var(--color-accent);
  }

  .mobile-menu .close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
  }
}

/* Hide mobile menu on desktop by default */
.mobile-menu,
.mobile-menu-overlay {
  display: none;
}

@media (max-width: 767px) {
  .mobile-menu,
  .mobile-menu-overlay {
    display: block;
  }
}

/* ---------- Keyframe Animations ---------- */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 16px var(--color-accent-glow); }
  50% { box-shadow: 0 0 32px var(--color-accent-glow); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--glass-bg) 25%, rgba(255,255,255,0.08) 50%, var(--glass-bg) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Gradient Divider ---------- */
.gradient-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
  margin: 0;
  border: none;
}

/* ---------- Enhanced Design: Deep Space Atmosphere ---------- */

/* Ambient glow orbs - add cosmic depth */
.section::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.035;
  pointer-events: none;
  z-index: 0;
}

.section:nth-child(odd)::before {
  background: var(--color-accent);
  top: -200px;
  right: -200px;
}

.section:nth-child(even)::before {
  background: #6366f1;
  top: -200px;
  left: -200px;
}

.section > * {
  position: relative;
  z-index: 1;
}

/* Enhanced glass card glow on hover */
.glass-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(245, 166, 35, 0.15), transparent 40%, transparent 60%, rgba(99, 102, 241, 0.1));
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: -1;
}

.glass-card {
  position: relative;
}

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

/* Disable glow overlay on cards that use ::before for other purposes */
.pricing-card::before {
  background: none !important;
  opacity: 1 !important;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

/* Animated gradient border for featured elements */
@keyframes borderGlow {
  0%, 100% { border-color: rgba(245, 166, 35, 0.3); }
  50% { border-color: rgba(245, 166, 35, 0.5); }
}

/* Star field background effect */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.15) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.1) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 30%, rgba(255,255,255,0.12) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 70%, rgba(255,255,255,0.08) 0%, transparent 100%),
    radial-gradient(1px 1px at 80% 15%, rgba(255,255,255,0.15) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 80%, rgba(255,255,255,0.1) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 15% 85%, rgba(245,166,35,0.2) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 60% 45%, rgba(245,166,35,0.15) 0%, transparent 100%),
    radial-gradient(1px 1px at 25% 40%, rgba(255,255,255,0.1) 0%, transparent 100%),
    radial-gradient(1px 1px at 45% 85%, rgba(255,255,255,0.08) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 50%, rgba(255,255,255,0.12) 0%, transparent 100%),
    radial-gradient(1px 1px at 5% 55%, rgba(255,255,255,0.1) 0%, transparent 100%);
  z-index: 0;
  animation: twinkle 8s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* Enhanced button shine effect */
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

/* Text glow for accent text */
.text-gradient {
  text-shadow: 0 0 40px rgba(245, 166, 35, 0.2);
}

/* Enhanced stat card inner glow */
.stat-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-glow), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.stat-card {
  position: relative;
  overflow: hidden;
}

.stat-card:hover::after {
  opacity: 1;
}

/* Noise texture overlay for depth */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Footer gradient glow line */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-glow), rgba(99,102,241,0.2), transparent);
}

.footer {
  position: relative;
}

/* ---------- Misc ---------- */
::selection {
  background: rgba(245, 166, 35, 0.3);
  color: #fff;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-deepest);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ============================================================ */
/* REQ-#2 板块间距调小（从 100px → 72px；移动端 64px → 48px）     */
/* ============================================================ */
:root { --section-padding: 72px 0; }
@media (max-width: 767px) { :root { --section-padding: 48px 0; } }

/* ============================================================ */
/* REQ-#3 首页"产品验证"第 3 步悬停展示四项详情（扩展 tooltip）   */
/* ============================================================ */
.flow-node .tooltip-rich {
  display: none;
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-mid, #0a0e27);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  width: 300px;
  max-width: 92vw;
  text-align: left;
  z-index: 20;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  line-height: 1.75;
}
.flow-node:hover .tooltip-rich { display: block; }
.flow-node .tooltip-rich ul { list-style: none; padding: 0; margin: 0 0 6px; }
.flow-node .tooltip-rich ul li { padding: 2px 0; }
.flow-node .tooltip-rich .tooltip-note {
  display: block; margin-top: 8px; padding-top: 8px;
  border-top: 1px dashed rgba(255,255,255,0.08);
  font-size: 0.72rem; color: var(--color-text-muted); font-style: italic;
}

/* ============================================================ */
/* REQ-#4 首页最新洞察通知条                                      */
/* ============================================================ */
.latest-insights-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 1100px;
  margin: 40px auto 0;
}
@media (max-width: 1023px) { .latest-insights-strip { grid-template-columns: 1fr; } }
.latest-insights-card {
  position: relative;
  display: block;
  padding: 18px 20px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  border-radius: 12px;
  color: inherit;
  text-decoration: none;
  transition: all .25s ease;
}
.latest-insights-card::before {
  content: "";
  position: absolute; left: 16px; top: 16px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-glow);
  animation: latestBlink 2s ease-in-out infinite;
}
@keyframes latestBlink { 0%,100%{opacity:.3} 50%{opacity:1} }
.latest-insights-card .li-title {
  font-size: 0.95rem; font-weight: 600; color: var(--color-text-primary);
  margin-left: 16px; line-height: 1.55;
}
.latest-insights-card .li-quick {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height .4s ease, opacity .3s ease, margin-top .3s ease;
  font-size: 0.78rem; color: var(--color-text-muted);
  line-height: 1.7;
  border-top: 1px dashed rgba(255,255,255,0.08);
  padding-top: 0;
}
.latest-insights-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0,0,0,0.5);
  border-color: rgba(245,166,35,0.35);
}
.latest-insights-card:hover .li-quick {
  max-height: 120px; opacity: 1;
  margin-top: 12px; padding-top: 10px;
}
.latest-insights-card .li-tag-new {
  position: absolute; top: 12px; right: 12px;
  font-size: 0.6rem; color: var(--color-accent);
  background: rgba(245,166,35,0.12);
  border: 1px solid rgba(245,166,35,0.3);
  padding: 2px 7px; border-radius: 999px;
  letter-spacing: 0.05em;
}