/* ============================================
   北京千河网络科技 - 旗舰级全局样式
   配色：深海蓝 + 科技银 + 青色点缀
   字体：系统字体栈（PingFang SC / Microsoft YaHei）
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  /* 旗舰配色 - 深海蓝体系 */
  --bg-primary: #F5F7FA;
  --bg-dark: #0A1A2E;
  --bg-dark-2: #102A43;
  --bg-dark-3: #1A3A5C;
  --bg-white: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-hover: #EEF2F7;
  --bg-glass: rgba(255, 255, 255, 0.7);

  /* 主品牌色 - 深海蓝 */
  --brand-blue: #1B5F9E;
  --brand-blue-dark: #0D3D6B;
  --brand-blue-light: #E3F0FA;
  --brand-blue-gradient: linear-gradient(135deg, #1B5F9E 0%, #2563EB 100%);
  --brand-blue-gradient-soft: linear-gradient(135deg, rgba(27,95,158,0.08) 0%, rgba(37,99,235,0.04) 100%);

  /* 科技银 */
  --silver: #E8ECF1;
  --silver-dark: #C5CED9;
  --silver-light: #F8FAFC;

  /* 青色点缀 */
  --cyan: #06B6D4;
  --cyan-light: #67E8F9;
  --cyan-dark: #0891B2;

  /* 强调色（保留橙色用于对比表等） */
  --accent-orange: #E97A1F;
  --accent-orange-light: #FFF7ED;

  /* 文字 */
  --text-primary: #0F1B2D;
  --text-secondary: #4A5C75;
  --text-muted: #8896A8;
  --text-on-dark: #F0F4F8;
  --text-on-dark-muted: #8FA5BD;
  --text-on-dark-dim: #5A7290;

  /* 边框 */
  --border: #E0E6ED;
  --border-light: #EDF1F6;
  --border-dark: #1E3A5C;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", Consolas, "Courier New", monospace;

  /* 间距 */
  --container-max: 1200px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* 阴影 - 旗舰级精细阴影 */
  --shadow-sm: 0 1px 3px rgba(10,26,46,0.06), 0 1px 2px rgba(10,26,46,0.04);
  --shadow-md: 0 4px 16px rgba(10,26,46,0.08), 0 2px 6px rgba(10,26,46,0.04);
  --shadow-lg: 0 16px 40px rgba(10,26,46,0.12), 0 4px 12px rgba(10,26,46,0.06);
  --shadow-xl: 0 24px 64px rgba(10,26,46,0.16), 0 8px 20px rgba(10,26,46,0.08);
  --shadow-blue: 0 4px 20px rgba(27,95,158,0.2);
  --shadow-cyan: 0 4px 20px rgba(6,182,212,0.15);
  --shadow-card-hover: 0 20px 48px rgba(10,26,46,0.12), 0 4px 12px rgba(10,26,46,0.06);

  /* 过渡 */
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--brand-blue);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--brand-blue-dark);
}

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

ul, ol {
  list-style: none;
}

/* ---------- 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }

.text-mono { font-family: var(--font-mono); }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-on-dark { color: var(--text-on-dark); }
.text-on-dark h1, .text-on-dark h2, .text-on-dark h3,
.text-on-dark h4, .text-on-dark h5 { color: var(--text-on-dark); }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent-orange); }
.text-brand { color: var(--brand-blue); }
.text-cyan { color: var(--cyan); }

/* 渐变文字 */
.gradient-text {
  background: linear-gradient(135deg, var(--brand-blue) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- 布局容器 ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-3xl) 0;
}

.section-sm {
  padding: var(--space-2xl) 0;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  position: relative;
}

.section-dark::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6,182,212,0.3), transparent);
}

.section-tinted {
  background: var(--bg-hover);
}

/* ---------- 栅格 ---------- */
.grid {
  display: grid;
  gap: var(--space-md);
}

/* 允许栅格子项在窄屏内收缩，避免长编号撑破页面。 */
.grid > * {
  min-width: 0;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 导航栏 - 旗舰级玻璃效果 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(245, 247, 250, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(224, 230, 237, 0.6);
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
  border-bottom-color: rgba(224, 230, 237, 0.8);
}

/* 锚点深链跳转偏移：避免内容被固定导航栏遮挡（导航68px + 20px呼吸） */
[id] {
  scroll-margin-top: 88px;
}

.navbar-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-logo img {
  height: 38px;
  width: auto;
}

.navbar-logo-text {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.navbar-links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 400;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--brand-blue);
}

.navbar-links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-blue-gradient);
  border-radius: 1px;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--space-xs);
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
}

.navbar-toggle:focus-visible {
  outline: 2px solid var(--brand-blue);
  outline-offset: 2px;
}

.navbar-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition);
}

.navbar-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}
.navbar-toggle.open span:nth-child(2) {
  opacity: 0;
}
.navbar-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ---------- 按钮 - 旗舰级 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--brand-blue-gradient);
  color: white;
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(27,95,158,0.3);
  color: white;
}

.btn-accent {
  background: var(--accent-orange);
  color: white;
  box-shadow: 0 4px 16px rgba(233,122,31,0.25);
}

.btn-accent:hover {
  background: #c9651a;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233,122,31,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--brand-blue);
  border: 1.5px solid var(--brand-blue);
}

.btn-outline:hover {
  background: var(--brand-blue);
  color: white;
  transform: translateY(-2px);
}

.btn-outline-light {
  background: transparent;
  color: var(--text-on-dark);
  border: 1.5px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.08);
  color: white;
  border-color: rgba(255,255,255,0.4);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1rem;
}

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

/* ---------- Hero 区域 - 旗舰级首屏 ---------- */
.hero {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  background: linear-gradient(145deg, #0A1A2E 0%, #102A43 40%, #0D2340 100%);
  color: var(--text-on-dark);
  overflow: hidden;
  padding-top: 68px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 15% 20%, rgba(6,182,212,0.15) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 80%, rgba(27,95,158,0.20) 0%, transparent 55%),
    radial-gradient(ellipse 40% 30% at 50% 50%, rgba(37,99,235,0.08) 0%, transparent 50%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, black, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, black, transparent 75%);
}

.hero::after {
  content: "";
  position: absolute;
  top: -30%; left: -10%;
  width: 50%; height: 160%;
  transform: rotate(15deg);
  background: linear-gradient(90deg, transparent, rgba(6,182,212,0.04), transparent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  width: 100%;
}

.hero-text {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: rgba(6,182,212,0.08);
  border: 1px solid rgba(6,182,212,0.25);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: #67E8F9;
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: var(--space-md);
  color: white;
  letter-spacing: -0.025em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #67E8F9 0%, #06B6D4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero h1 .accent {
  color: var(--cyan-light);
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: #A0B4CC;
  max-width: 520px;
  margin-bottom: var(--space-xl);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.hero-stats {
  display: flex;
  gap: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 600;
  color: #F0F4F8;
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--text-on-dark-dim);
  margin-top: 6px;
}

.hero-stat-accent {
  color: var(--cyan-light);
}

/* ---------- Hero 右侧可视化 ---------- */
.hero-visual {
  position: relative;
  height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-mockup {
  position: relative;
  width: 100%;
  max-width: 460px;
  background: rgba(10,26,46,0.7);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 24px 60px rgba(0,0,0,0.4);
  overflow: hidden;
  animation: mockupFloat 6s ease-in-out infinite;
}

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

.hero-mockup-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 9px;
  background: rgba(6,182,212,0.12);
  border: 1px solid rgba(6,182,212,0.25);
  font-size: 0.6875rem;
  color: var(--cyan-light);
}

.hero-mockup-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.hero-mockup-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.hero-mockup-dot.r { background: #EF4444; }
.hero-mockup-dot.y { background: #F59E0B; }
.hero-mockup-dot.g { background: #22C55E; }

.hero-mockup-title {
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  margin-left: 8px;
}

.hero-mockup-body {
  padding: 18px;
}

.hero-mockup-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  transition: background 0.2s;
}

.hero-mockup-row.active {
  background: rgba(6,182,212,0.10);
  border: 1px solid rgba(6,182,212,0.15);
}

.hero-mockup-row.inactive {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.04);
}

.hero-mockup-check {
  width: 18px; height: 18px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  flex-shrink: 0;
}

.hero-mockup-check.done {
  background: rgba(34,197,94,0.2);
  color: #4ADE80;
}

.hero-mockup-check.current {
  background: rgba(6,182,212,0.25);
  color: var(--cyan-light);
  box-shadow: 0 0 0 3px rgba(6,182,212,0.15);
}

.hero-mockup-check.pending {
  background: rgba(148,163,184,0.1);
  color: #475569;
}

.hero-mockup-text {
  flex: 1;
  font-size: 0.8125rem;
  color: #C5CED9;
}

.hero-mockup-time {
  font-size: 0.6875rem;
  color: var(--text-on-dark-dim);
  font-family: var(--font-mono);
}

.hero-mockup-progress {
  margin-top: 14px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hero-mockup-progress-label {
  font-size: 0.75rem;
  color: var(--text-on-dark-muted);
}

.hero-mockup-progress-bar {
  width: 100px;
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  overflow: hidden;
  margin: 0 12px;
}

.hero-mockup-progress-fill {
  width: 67%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-light));
  border-radius: 3px;
}

.hero-mockup-progress-num {
  font-size: 0.75rem;
  color: var(--cyan-light);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* 浮动卡片 */
.hero-float-card {
  position: absolute;
  background: rgba(16,42,67,0.88);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  color: #D0DCE8;
  animation: floatCard 5s ease-in-out infinite;
}

.hero-float-card .icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.hero-float-card-1 {
  top: 10px;
  right: -10px;
  animation-delay: -1s;
}
.hero-float-card-1 .icon {
  background: rgba(6,182,212,0.15);
  color: var(--cyan-light);
}

.hero-float-card-2 {
  bottom: 30px;
  left: -20px;
  animation-delay: -2.5s;
}
.hero-float-card-2 .icon {
  background: rgba(27,95,158,0.2);
  color: var(--brand-blue);
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- 通用区块标题 ---------- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section-header p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section-header.text-left {
  text-align: left;
}

.section-header.text-left p {
  margin: 0;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--brand-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
  padding: 4px 12px;
  background: var(--brand-blue-light);
  border-radius: var(--radius-full);
}

/* ---------- 卡片 - 旗舰级 ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--brand-blue-gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--brand-blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
  transition: transform var(--transition);
}

.card:hover .card-icon {
  transform: scale(1.08);
}

.card-icon.orange {
  background: var(--accent-orange-light);
}

.card-icon.cyan {
  background: rgba(6,182,212,0.1);
}

.card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

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

/* 玻璃卡片 */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.glass-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ---------- 数据卡片 ---------- */
.data-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition);
}

.data-card:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-md);
}

.data-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 500;
  color: var(--brand-blue);
  line-height: 1;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.data-value.blue {
  color: var(--brand-blue);
}

.data-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--space-sm);
}

.data-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

/* ============================================================
   旗舰级新增组件
   ============================================================ */

/* ---------- 信任模块 ---------- */
.trust-module {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.trust-pillar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.trust-pillar::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--brand-blue-gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

.trust-pillar:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.trust-pillar:hover::before {
  opacity: 1;
}

.trust-pillar-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-md);
  background: var(--brand-blue-gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.trust-pillar h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.trust-pillar p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- 产品生态展示 ---------- */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.ecosystem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.ecosystem-card::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 0;
  background: var(--brand-blue-gradient);
  opacity: 0.06;
  transition: height var(--transition);
}

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

.ecosystem-card:hover::after {
  height: 100%;
}

.ecosystem-card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--brand-blue-gradient-soft);
  border: 1px solid rgba(27,95,158,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.ecosystem-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand-blue);
  background: var(--brand-blue-light);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.ecosystem-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.ecosystem-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.ecosystem-card-features {
  list-style: none;
  padding: 0;
}

.ecosystem-card-features li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 5px 0 5px 22px;
  position: relative;
}

.ecosystem-card-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--brand-blue);
  border-bottom: 2px solid var(--brand-blue);
  transform: rotate(-45deg);
}

/* ---------- 行业解决方案展示 ---------- */
.industry-showcase {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-sm);
}

.industry-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.industry-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 100%;
  background: var(--brand-blue-gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

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

.industry-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-sm);
  border-radius: var(--radius-sm);
  background: var(--brand-blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  position: relative;
  z-index: 1;
}

.industry-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  position: relative;
  z-index: 1;
}

.industry-card p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
}

/* ---------- 技术能力网格 ---------- */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.capability-item {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all var(--transition);
}

.capability-item:hover {
  background: rgba(6,182,212,0.05);
  border-color: rgba(6,182,212,0.15);
}

.capability-item .cap-label {
  font-size: 0.75rem;
  color: var(--text-on-dark-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.capability-item .cap-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-on-dark);
}

/* ---------- 信任条 ---------- */
.trust-bar {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  text-align: center;
}

.trust-bar-item {
  padding: var(--space-sm) 0;
  border-right: 1px solid var(--border);
}

.trust-bar-item:last-child {
  border-right: none;
}

.trust-bar-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--brand-blue);
  line-height: 1;
}

.trust-bar-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ---------- 证书展示 ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}

.cert-item {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition);
  background: white;
}

.cert-item:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.cert-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: top;
}

.cert-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,26,46,0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  color: white;
  font-size: 0.875rem;
}

.cert-item:hover .cert-item-overlay {
  opacity: 1;
}

.cert-item-label {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
  border-top: 1px solid var(--border);
}

/* ---------- 证书放大弹窗 ---------- */
.cert-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.85);
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.cert-modal.open {
  display: flex;
}

.cert-modal img {
  max-width: 90%;
  max-height: 90vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.cert-modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.1);
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.cert-modal-close:hover {
  background: rgba(255,255,255,0.2);
}

/* ---------- Tab 切换 ---------- */
.tabs {
  display: flex;
  gap: var(--space-xs);
  border-bottom: 2px solid var(--border);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
}

.tab {
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border: none;
  background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: var(--font-sans);
}

.tab:hover {
  color: var(--brand-blue);
}

.tab.active {
  color: var(--brand-blue);
  border-bottom-color: var(--brand-blue);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

/* ---------- 流程步骤 ---------- */
.process-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  position: relative;
}

.process-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
}

.process-step-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand-blue);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.process-step h4 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.process-step ul {
  list-style: none;
  padding: 0;
}

.process-step li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.process-step li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-blue);
}

/* ---------- 信创适配 ---------- */
.xinchang-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.xinchang-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  text-align: center;
  transition: all var(--transition);
}

.xinchang-item:hover {
  border-color: var(--brand-blue);
  background: var(--brand-blue-light);
}

.xinchang-item-name {
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 4px;
}

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

/* ---------- 部署模式对比 ---------- */
.deploy-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.deploy-card {
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition);
}

.deploy-card.recommended {
  border-color: var(--brand-blue);
  position: relative;
}

.deploy-card.recommended::before {
  content: "推荐";
  position: absolute;
  top: -12px;
  left: var(--space-md);
  background: var(--brand-blue-gradient);
  color: white;
  font-size: 0.75rem;
  padding: 2px 12px;
  border-radius: var(--radius-full);
}

.deploy-card h4 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.deploy-card ul {
  list-style: none;
  padding: 0;
}

.deploy-card li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.deploy-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand-blue);
  font-weight: 500;
}

/* ---------- 产品界面模拟 ---------- */
.product-mockup {
  background: var(--bg-dark-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.product-mockup-header {
  background: var(--bg-dark);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

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

.product-mockup-dot.red { background: #EF4444; }
.product-mockup-dot.yellow { background: #F59E0B; }
.product-mockup-dot.green { background: #10B981; }

.product-mockup-title {
  margin-left: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  font-family: var(--font-mono);
}

.product-mockup-body {
  padding: var(--space-md);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-md);
  min-height: 300px;
}

.product-mockup-sidebar {
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
}

.product-mockup-sidebar-item {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  margin-bottom: 4px;
}

.product-mockup-sidebar-item.active {
  background: var(--brand-blue);
  color: white;
}

.product-mockup-main {
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
}

.product-mockup-label {
  position: absolute;
  bottom: var(--space-sm);
  right: var(--space-sm);
  background: rgba(0,0,0,0.6);
  color: var(--text-on-dark-muted);
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

/* ---------- FAQ ---------- */
.faq-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.faq-sidebar {
  position: sticky;
  top: 88px;
}

.faq-sidebar h4 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.faq-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.faq-sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.faq-sidebar-nav a:hover,
.faq-sidebar-nav a.active {
  background: var(--brand-blue-light);
  color: var(--brand-blue-dark);
  font-weight: 500;
}

.faq-search {
  margin-bottom: var(--space-lg);
}

.faq-search-input {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--transition);
  background: var(--bg-card);
}

.faq-search-input:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(27,95,158,0.1);
}

/* FAQ 卡片化项 */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
  transition: all var(--transition);
  background: var(--bg-card);
}

.faq-item:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-sm);
}

.faq-item-question {
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.faq-item-question:focus-visible {
  outline: 2px solid var(--brand-blue);
  outline-offset: -2px;
}

.faq-item-question h3 {
  font-size: 1rem;
  font-weight: 500;
  margin: 0;
}

.faq-item-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.25rem;
  transition: transform var(--transition);
  background: var(--bg-hover);
  border-radius: var(--radius-sm);
}

.faq-item.open .faq-item-toggle {
  transform: rotate(45deg);
  background: var(--brand-blue-light);
  color: var(--brand-blue);
}

.faq-item-answer {
  max-height: none;
  overflow: visible;
}

.js .faq-item-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.js .faq-item.open .faq-item-answer {
  max-height: 2000px;
}

.faq-item-answer-inner {
  padding: 0 var(--space-lg) var(--space-md);
}

.faq-item-answer-summary {
  font-weight: 500;
  color: var(--text-primary);
  padding: var(--space-sm) var(--space-md);
  background: var(--brand-blue-light);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--brand-blue);
  margin-bottom: var(--space-md);
  font-size: 0.9375rem;
}

.faq-item-answer-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item-answer-body p {
  margin-bottom: var(--space-sm);
}

.faq-related {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px dashed var(--border);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-related-label {
  color: var(--text-muted);
  margin-right: var(--space-xs);
}

.faq-related a {
  color: var(--brand-blue);
  text-decoration: none;
  margin-right: var(--space-md);
  transition: color 0.2s;
}

.faq-related a:hover {
  color: var(--brand-blue-dark);
  text-decoration: underline;
}

.faq-item-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.faq-item-id {
  font-family: var(--font-mono);
  background: var(--bg-hover);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.faq-pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
}

.faq-pagination a {
  padding: 8px 14px;
  font-size: 0.875rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.faq-pagination a:hover,
.faq-pagination a.active {
  border-color: var(--brand-blue);
  background: var(--brand-blue);
  color: white;
}

/* ---------- 表单 ---------- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.form-label .required {
  color: var(--accent-orange);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--transition);
  background: white;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(27,95,158,0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  font-size: 0.75rem;
  color: #EF4444;
  margin-top: 4px;
  display: none;
}

.form-error.show {
  display: block;
}

/* ---------- 联系信息 ---------- */
.contact-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact-info-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--brand-blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.contact-info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-info-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
}

.contact-info-value.mono {
  font-family: var(--font-mono);
}

/* ---------- 地图示意 ---------- */
.map-placeholder {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* ---------- 页脚 - 旗舰级 ---------- */
.footer {
  background: var(--bg-dark);
  color: var(--text-on-dark-muted);
  padding: var(--space-2xl) 0 var(--space-lg);
  position: relative;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6,182,212,0.3), rgba(27,95,158,0.2), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand img {
  width: 100%;
  max-width: 320px;
  height: auto;
  object-fit: contain;
  margin-bottom: var(--space-sm);
  opacity: 1;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-on-dark-muted);
  line-height: 1.6;
  max-width: 300px;
}

.footer-col h5 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-on-dark);
  margin-bottom: var(--space-sm);
}

.footer-col a {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  padding: 4px 0;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--text-on-dark);
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

.footer-bottom a {
  color: var(--text-on-dark-muted);
}

.footer-icp {
  font-family: var(--font-mono);
}

/* ---------- 动画 ---------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.fade-in {
  animation: fadeIn 0.6s ease;
}

.animate-on-scroll {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animation-ready {
  opacity: 0;
  transform: translateY(20px);
}

.animate-on-scroll.animation-ready.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 首页 hero 入场动画 */
.hero-badge,
.hero h1,
.hero-subtitle,
.hero-actions,
.hero-stats,
.hero-visual {
  animation: fadeInUp 0.8s ease both;
}

.hero-badge { animation-delay: 0.1s; }
.hero h1 { animation-delay: 0.2s; }
.hero-subtitle { animation-delay: 0.4s; }
.hero-actions { animation-delay: 0.6s; }
.hero-stats { animation-delay: 0.8s; }
.hero-visual { animation-delay: 0.5s; }

/* ---------- 对比表 ---------- */
.compare-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.compare-table thead {
  background: var(--bg-dark);
}

.compare-table thead th {
  padding: var(--space-md) var(--space-lg);
  color: var(--text-on-dark);
  font-weight: 600;
  font-size: 0.9375rem;
  text-align: left;
}

.compare-table thead th:nth-child(2) {
  color: var(--cyan-light);
}

.compare-table tbody td {
  padding: var(--space-md) var(--space-lg);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.compare-table tbody tr:hover {
  background: var(--bg-hover);
}

.compare-table tbody td:nth-child(2) {
  color: var(--brand-blue);
  font-weight: 500;
}

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

/* ---------- Logo 墙 ---------- */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-md);
}

.logo-wall-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.logo-wall-item:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.logo-wall-item-text {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ---------- 响应式 ---------- */
/* ============================================================
   旗舰升级 · Hero 智能会议空间视觉
   ============================================================ */
.hero-visual-scene {
  position: relative;
  width: 100%;
  height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 800px;
}

.meeting-space {
  position: relative;
  width: 420px;
  height: 320px;
  animation: sceneFloat 7s ease-in-out infinite;
}

@keyframes sceneFloat {
  0%, 100% { transform: translateY(0) rotateX(2deg); }
  50% { transform: translateY(-10px) rotateX(-1deg); }
}

.meeting-space-ambient {
  position: absolute;
  inset: -40px;
  border-radius: 60% 40% 55% 45% / 45% 55% 40% 60%;
  background: radial-gradient(ellipse at 30% 40%, rgba(6,182,212,0.12) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 60%, rgba(27,95,158,0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 50%, rgba(37,99,235,0.06) 0%, transparent 60%);
  animation: ambientPulse 4s ease-in-out infinite;
}

@keyframes ambientPulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.meeting-table {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 80px;
  background: linear-gradient(180deg, rgba(30,60,90,0.6) 0%, rgba(15,35,55,0.8) 100%);
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.04);
}

.meeting-device {
  position: absolute;
  bottom: 85px;
  width: 48px;
  height: 34px;
  background: linear-gradient(135deg, #1a3a5c 0%, #0d2340 100%);
  border-radius: 5px;
  border: 1px solid rgba(6,182,212,0.2);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.5rem;
  color: #67E8F9;
  overflow: hidden;
}

.meeting-device::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 6px;
  right: 6px;
  bottom: 3px;
  background: linear-gradient(135deg, rgba(6,182,212,0.15) 0%, rgba(27,95,158,0.1) 100%);
  border-radius: 2px;
  border: 1px solid rgba(255,255,255,0.06);
}

.meeting-device:nth-child(2) { left: 25px; transform: rotate(-5deg); }
.meeting-device:nth-child(3) { left: 50%; transform: translateX(-50%) rotate(0deg); width: 52px; height: 36px; }
.meeting-device:nth-child(4) { right: 25px; transform: rotate(5deg); }

.meeting-screen {
  position: absolute;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  height: 140px;
  background: linear-gradient(135deg, #0d2340 0%, #0a1a2e 100%);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05);
  overflow: hidden;
}

.meeting-screen-content {
  position: absolute;
  inset: 8px;
  border-radius: 6px;
  background:
    linear-gradient(90deg, rgba(6,182,212,0.08) 1px, transparent 1px),
    linear-gradient(rgba(6,182,212,0.04) 1px, transparent 1px);
  background-size: 30px 30px;
  border: 1px solid rgba(255,255,255,0.04);
}

.meeting-screen-chart {
  position: absolute;
  bottom: 15px;
  left: 15px;
  right: 15px;
  height: 40px;
  display: flex;
  align-items: flex-end;
  gap: 4px;
}

.meeting-screen-bar {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, #06B6D4 0%, rgba(6,182,212,0.3) 100%);
  animation: barPulse 2s ease-in-out infinite;
}

.meeting-screen-bar:nth-child(1) { height: 70%; animation-delay: 0s; }
.meeting-screen-bar:nth-child(2) { height: 90%; animation-delay: 0.2s; }
.meeting-screen-bar:nth-child(3) { height: 60%; animation-delay: 0.4s; }
.meeting-screen-bar:nth-child(4) { height: 85%; animation-delay: 0.6s; }
.meeting-screen-bar:nth-child(5) { height: 75%; animation-delay: 0.8s; }
.meeting-screen-bar:nth-child(6) { height: 95%; animation-delay: 1s; }
.meeting-screen-bar:nth-child(7) { height: 55%; animation-delay: 1.2s; }

@keyframes barPulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.meeting-screen-label {
  position: absolute;
  top: 15px;
  left: 15px;
  font-size: 8px;
  color: rgba(6,182,212,0.6);
  font-family: monospace;
  letter-spacing: 0.05em;
}

.scene-float-card {
  position: absolute;
  padding: 8px 14px;
  background: rgba(16,42,67,0.9);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.6875rem;
  color: #c5ced9;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: floatCard 4.5s ease-in-out infinite;
}

.scene-float-card .scene-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

.scene-float-card-1 { top: 10px; right: 10px; animation-delay: -1.5s; }
.scene-float-card-1 .scene-icon { background: rgba(6,182,212,0.15); }
.scene-float-card-2 { top: 45px; left: 10px; animation-delay: -3s; }
.scene-float-card-2 .scene-icon { background: rgba(27,95,158,0.2); }

.meeting-particles { position: absolute; inset: 0; pointer-events: none; }

.meeting-particle {
  position: absolute;
  width: 2px; height: 2px;
  border-radius: 50%;
  background: #67E8F9;
  opacity: 0;
  animation: particleDrift 6s ease-in-out infinite;
}

.meeting-particle:nth-child(1) { top: 20%; left: 15%; animation-delay: 0s; }
.meeting-particle:nth-child(2) { top: 40%; left: 80%; animation-delay: 1.5s; }
.meeting-particle:nth-child(3) { top: 70%; left: 20%; animation-delay: 3s; }
.meeting-particle:nth-child(4) { top: 30%; left: 60%; animation-delay: 4.5s; }
.meeting-particle:nth-child(5) { top: 55%; left: 40%; animation-delay: 2s; }

@keyframes particleDrift {
  0%, 100% { opacity: 0; transform: translateY(0) translateX(0); }
  20% { opacity: 0.8; }
  50% { opacity: 0.4; transform: translateY(-20px) translateX(15px); }
  80% { opacity: 0; }
}

/* ============================================================
   旗舰升级 · 品牌价值模块
   ============================================================ */
.brand-choice-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.brand-choice-card {
  position: relative;
  padding: var(--space-2xl) var(--space-lg) var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border);
}

.brand-choice-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--brand-blue-gradient);
}

.brand-choice-card::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: radial-gradient(ellipse at bottom, rgba(27,95,158,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.brand-choice-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-blue);
}

.brand-choice-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
}

.brand-choice-icon.gov    { background: linear-gradient(135deg, rgba(27,95,158,0.12) 0%, rgba(37,99,235,0.06) 100%); }
.brand-choice-icon.local  { background: linear-gradient(135deg, rgba(234,88,12,0.10) 0%, rgba(249,115,22,0.05) 100%); }
.brand-choice-icon.secure { background: linear-gradient(135deg, rgba(6,182,212,0.12) 0%, rgba(34,211,238,0.06) 100%); }
.brand-choice-icon.deliver{ background: linear-gradient(135deg, rgba(16,185,129,0.12) 0%, rgba(52,211,153,0.06) 100%); }

.brand-choice-num {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-xs);
  letter-spacing: -0.03em;
}

.brand-choice-num.gov    { color: #1B5F9E; }
.brand-choice-num.local  { color: #EA580C; }
.brand-choice-num.secure { color: #0891B2; }
.brand-choice-num.deliver{ color: #059669; }

.brand-choice-num small {
  font-size: 1rem;
  font-weight: 500;
}

.brand-choice-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: 1;
}

.brand-choice-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

.brand-choice-card .brand-choice-sub {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* ============================================================
   旗舰升级 · 案例视觉化展示
   ============================================================ */
.case-showcase {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.case-showcase-header {
  padding: var(--space-xl) var(--space-2xl);
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
  display: flex;
  align-items: flex-end;
  gap: var(--space-xl);
}

.case-showcase-client {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.25rem;
  letter-spacing: 0.05em;
  color: var(--text-on-dark);
  font-weight: 700;
}

.case-showcase-info h2 {
  color: var(--text-on-dark);
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}

.case-showcase-info .case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(6,182,212,0.12);
  border: 1px solid rgba(6,182,212,0.25);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: #67E8F9;
  margin-bottom: var(--space-sm);
}

.case-showcase-info .case-meta {
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
}

.case-showcase-body {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.case-showcase-col {
  padding: var(--space-xl) var(--space-lg);
  position: relative;
}

.case-showcase-col:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: var(--space-lg);
  bottom: var(--space-lg);
  width: 1px;
  background: var(--border);
}

.case-showcase-col .col-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.case-showcase-col .col-icon.bg { background: linear-gradient(135deg, rgba(27,95,158,0.12) 0%, rgba(37,99,235,0.06) 100%); }
.case-showcase-col .col-icon.build { background: linear-gradient(135deg, rgba(6,182,212,0.12) 0%, rgba(34,211,238,0.06) 100%); }
.case-showcase-col .col-icon.value { background: linear-gradient(135deg, rgba(16,185,129,0.12) 0%, rgba(52,211,153,0.06) 100%); }

.case-showcase-col h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

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

.case-showcase-col .col-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--brand-blue);
  line-height: 1;
}

.case-showcase-col .col-num-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============================================================
   旗舰升级 · 解决方案页面场景视觉
   ============================================================ */
.solution-scene-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.solution-scene-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-xl);
  transition: all var(--transition);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
}

.solution-scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-blue);
}

.solution-scene-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  transition: transform 0.6s ease;
}

.solution-scene-card:hover .solution-scene-bg {
  transform: scale(1.04);
}

.scene-gov-bg {
  background:
    linear-gradient(160deg, #0f1b2d 0%, #1a3550 40%, #0d2340 100%);
}
.scene-gov-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(27,95,158,0.3) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 70%, rgba(6,182,212,0.15) 0%, transparent 50%);
}
.scene-gov-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px;
}

.scene-soe-bg {
  background:
    linear-gradient(160deg, #0d2340 0%, #15355a 40%, #0a1a30 100%);
}
.scene-soe-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 60%, rgba(234,88,12,0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 65% 40%, rgba(249,115,22,0.1) 0%, transparent 50%);
}

.scene-finance-bg {
  background:
    linear-gradient(160deg, #0a1a2e 0%, #12304a 40%, #0c2238 100%);
}
.scene-finance-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 40% 50%, rgba(16,185,129,0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 20%, rgba(6,182,212,0.12) 0%, transparent 50%);
}

.scene-edu-bg {
  background:
    linear-gradient(160deg, #0f1b2b 0%, #1a2d48 40%, #0e1d34 100%);
}
.scene-edu-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 60% 40%, rgba(99,102,241,0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 30% 70%, rgba(27,95,158,0.15) 0%, transparent 50%);
}

.scene-decor-table {
  position: absolute;
  bottom: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  height: 70px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
}

.scene-decor-screen {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 180px;
  height: 100px;
  background: rgba(255,255,255,0.04);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.08);
}

.scene-decor-dots {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scene-decor-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  animation: dotBlink 2s ease-in-out infinite;
}

.scene-decor-dot:nth-child(2) { animation-delay: 0.5s; }
.scene-decor-dot:nth-child(3) { animation-delay: 1s; }

@keyframes dotBlink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.8; }
}

.solution-scene-content {
  position: relative;
  z-index: 2;
}

.solution-scene-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-on-dark);
  margin-bottom: var(--space-xs);
}

.solution-scene-content p {
  font-size: 0.875rem;
  color: var(--text-on-dark-muted);
  line-height: 1.6;
  max-width: 320px;
  margin-bottom: var(--space-md);
}

.solution-scene-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: #67E8F9;
}

/* ============================================================
   旗舰升级 · 大段留白叙事
   ============================================================ */
.narrative-section {
  padding: var(--space-3xl) 0;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.narrative-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--brand-blue);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  padding: 6px 16px;
  border: 1px solid rgba(27,95,158,0.15);
  border-radius: var(--radius-full);
}

.narrative-section h2 {
  font-size: 2.25rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--space-xl);
  letter-spacing: -0.02em;
}

.narrative-section p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
}
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-content { grid-template-columns: 1fr; gap: var(--space-xl); }
  .hero-visual { height: 360px; }
  .hero-text { max-width: 100%; }
  .process-flow { grid-template-columns: 1fr; }
  .xinchang-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-sidebar { position: static; }
  .contact-info-grid { grid-template-columns: 1fr; }
  .product-mockup-body { grid-template-columns: 1fr; }
  .trust-module { grid-template-columns: repeat(2, 1fr); }
  .ecosystem-grid { grid-template-columns: 1fr; }
  .industry-showcase { grid-template-columns: repeat(3, 1fr); }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-bar { grid-template-columns: repeat(3, 1fr); }
  .trust-bar-item { border-right: none; border-bottom: 1px solid var(--border); }
}

@media (max-width: 768px) {
  .navbar-links {
    display: flex;
    position: static;
    flex-wrap: wrap;
    background: white;
    padding: var(--space-sm) 0;
    gap: var(--space-sm);
  }

  .js .navbar-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: var(--space-md);
    box-shadow: var(--shadow-lg);
  }

  .js .navbar-links.open {
    display: flex;
  }

  .navbar-toggle {
    display: none;
  }

  .js .navbar-toggle {
    display: flex;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .deploy-compare {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 68px;
  }

  .hero-visual {
    height: 300px;
  }

  .hero-float-card {
    display: none;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .trust-module { grid-template-columns: 1fr; }
  .industry-showcase { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: 1fr; }
  .trust-bar { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- 辅助类 ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.hidden { display: none !important; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* ---------- 页面 Hero ---------- */
.page-hero {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 128px 0 56px;
  position: relative;
  overflow: hidden;
}

.page-hero .hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  color: var(--text-on-dark);
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.page-hero p {
  color: var(--text-on-dark-muted);
  max-width: 700px;
  font-size: 1.0625rem;
  line-height: 1.7;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  margin-bottom: var(--space-md);
}

.breadcrumb-nav a {
  color: var(--cyan-light);
}

.breadcrumb-nav a:hover {
  color: var(--text-on-dark);
}

.breadcrumb-nav span {
  color: var(--text-on-dark-muted);
}

/* ---------- 特色案例 ---------- */
.case-featured {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.case-featured-header {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
  padding: var(--space-xl) var(--space-xl) var(--space-lg);
  color: var(--text-on-dark);
}

.case-featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(6,182,212,0.12);
  border: 1px solid rgba(6,182,212,0.25);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--cyan-light);
  margin-bottom: var(--space-sm);
}

.case-featured-header h2 {
  color: var(--text-on-dark);
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

.case-featured-header p {
  color: var(--text-on-dark-muted);
  font-size: 0.9375rem;
  max-width: 600px;
}

.case-featured-body {
  padding: var(--space-xl);
}

.case-featured-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.case-stat {
  text-align: center;
  padding: var(--space-md);
  background: var(--bg-hover);
  border-radius: var(--radius-md);
}

.case-stat-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--brand-blue);
  line-height: 1;
}

.case-stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

.case-detail-section {
  margin-bottom: var(--space-lg);
}

.case-detail-section h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}

.case-detail-section h3::before {
  content: "";
  width: 4px;
  height: 20px;
  background: var(--brand-blue-gradient);
  border-radius: 2px;
}

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

.case-detail-section ul {
  list-style: none;
  padding: 0;
}

.case-detail-section li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 6px 0 6px 20px;
  position: relative;
}

.case-detail-section li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand-blue);
}

/* ---------- 案例卡片 ---------- */
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition);
  position: relative;
}

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

.case-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--brand-blue);
  background: var(--brand-blue-light);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.case-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.case-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.case-card-placeholder {
  background: var(--bg-hover);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  color: var(--text-muted);
}

.case-card-placeholder p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ---------- 知识中心卡片 ---------- */
.knowledge-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.knowledge-card-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand-blue);
  background: var(--brand-blue-light);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
  align-self: flex-start;
}

.knowledge-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.knowledge-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.knowledge-card-meta {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.knowledge-card-meta a {
  color: var(--brand-blue);
  font-weight: 500;
}

/* ---------- 相关推荐 ---------- */
.related-links {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-hover);
  border-radius: var(--radius-md);
}

.related-links h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.related-links-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.related-links-list a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.related-links-list a:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

/* ---------- 分类导航 ---------- */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

.category-nav-item {
  padding: 8px 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition: all var(--transition);
  cursor: pointer;
}

.category-nav-item:hover,
.category-nav-item.active {
  background: var(--brand-blue);
  color: white;
  border-color: var(--brand-blue);
}

/* ============================================
   UI 旗舰升级 - 补充样式
   ============================================ */

/* ---------- 知识中心导航补充 ---------- */
.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.0625rem;
}

.nav-logo img {
  height: 32px;
  width: auto;
}

.nav-logo span {
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li a {
  display: block;
  padding: 8px 14px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--brand-blue);
  background: var(--brand-blue-light);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 4px 0;
  transition: all 0.3s;
}

/* ---------- 知识中心页面布局 ---------- */
.page-header {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 120px 0 48px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(27,95,158,0.15) 0%, transparent 60%);
  pointer-events: none;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  color: var(--text-on-dark);
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.page-header .subtitle {
  color: var(--text-on-dark-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 700px;
}

.page-header .breadcrumb {
  font-size: 0.8125rem;
  color: var(--text-on-dark-dim);
  margin-bottom: var(--space-md);
}

.page-header .breadcrumb a {
  color: var(--text-on-dark-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.page-header .breadcrumb a:hover {
  color: var(--cyan-light);
}

/* ---------- 知识中心分类导航 ---------- */
.knowledge-cat-nav {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.cat-nav-item {
  padding: 8px 18px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.cat-nav-item:hover {
  background: var(--brand-blue-gradient);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-blue);
  transform: translateY(-2px);
}

/* ---------- 知识中心分类区块 ---------- */
.knowledge-category {
  margin-bottom: var(--space-2xl);
}

.category-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--brand-blue);
}

.category-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.category-header p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ---------- 知识中心卡片网格 ---------- */
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.knowledge-grid .knowledge-card {
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.knowledge-grid .knowledge-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-blue-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.knowledge-grid .knowledge-card:hover::after {
  transform: scaleX(1);
}

.knowledge-grid .knowledge-card .card-meta {
  margin-top: auto;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--brand-blue);
  font-weight: 500;
}

/* ---------- FAQ 增强样式 ---------- */

/* FAQ 侧边栏卡片化 */
.faq-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.faq-sidebar h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.faq-sidebar-nav a {
  position: relative;
  padding-left: 16px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}

.faq-sidebar-nav a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--cyan);
  border-radius: 2px;
  transition: height 0.2s ease;
}

.faq-sidebar-nav a:hover::before,
.faq-sidebar-nav a.active::before {
  height: 16px;
}

/* FAQ 卡片增强 hover */
.faq-item {
  position: relative;
  overflow: hidden;
}

.faq-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-blue-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.faq-item:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-md);
}

.faq-item:hover::before {
  transform: scaleX(1);
}

.faq-item.open {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-md);
}

.faq-item.open::before {
  transform: scaleX(1);
}

/* FAQ 相关推荐增强 */
.faq-related {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
}

.faq-related a {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.75rem;
  color: var(--brand-blue);
  background: var(--brand-blue-light);
  border-radius: var(--radius-full);
  text-decoration: none;
  margin-right: 0;
  transition: all 0.2s;
}

.faq-related a:hover {
  background: var(--brand-blue);
  color: white;
  transform: translateY(-1px);
}

/* FAQ ID 徽标增强 */
.faq-item-id {
  font-family: var(--font-mono);
  background: linear-gradient(135deg, rgba(27,95,158,0.08) 0%, rgba(6,182,212,0.08) 100%);
  color: var(--brand-blue);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 600;
}

/* FAQ 搜索增强 */
.faq-search-input {
  border: 1.5px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.faq-search-input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(6,182,212,0.12);
}

/* ---------- 知识中心容器 ---------- */
.knowledge-center {
  padding: var(--space-xl) 0;
}

/* ---------- 响应式补充 ---------- */
@media (max-width: 768px) {
  .nav-menu {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-card);
    padding: var(--space-md);
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--border);
  }

  .js .nav-menu {
    display: none;
  }

  .js .nav-menu.open {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .js .nav-toggle {
    display: block;
  }

  .knowledge-cat-nav {
    gap: var(--space-xs);
  }

  .cat-nav-item {
    padding: 6px 12px;
    font-size: 0.8125rem;
  }

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

  .page-header {
    padding: 100px 0 32px;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }
}

/* ============================================================
   旗舰升级 · 响应式补充

/* ============================================================
   V3 旗舰升级 · Hero 增强 - 行业头部厂商级
   ============================================================ */
.hero-visual-v3 {
  position: relative;
  width: 100%;
  height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.meeting-room {
  position: relative;
  width: 480px;
  height: 380px;
  perspective: 1000px;
  animation: roomFloat 8s ease-in-out infinite;
}

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

/* 房间背景光 - 更大气 */
.room-glow {
  position: absolute;
  inset: -60px;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(6,182,212,0.1) 0%, transparent 60%),
    radial-gradient(ellipse at 30% 70%, rgba(27,95,158,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 70%, rgba(37,99,235,0.06) 0%, transparent 50%);
  animation: glowBreath 5s ease-in-out infinite;
}

@keyframes glowBreath {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* 大屏 - 更大更突出 */
.room-screen {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 175px;
  background: linear-gradient(160deg, #0a1a30 0%, #0d2340 40%, #102a46 100%);
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.06);
  overflow: hidden;
}

.room-screen::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.04);
  background:
    linear-gradient(90deg, rgba(6,182,212,0.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(6,182,212,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.room-screen-label {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-size: 8px;
  font-family: monospace;
  color: rgba(103,232,249,0.5);
  letter-spacing: 0.08em;
}

.room-screen-bars {
  position: absolute;
  bottom: 18px;
  left: 18px;
  right: 18px;
  height: 55px;
  display: flex;
  align-items: flex-end;
  gap: 5px;
}

.room-screen-bar {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, #06B6D4 0%, rgba(6,182,212,0.2) 100%);
  animation: barRise 2.5s ease-in-out infinite;
}

.room-screen-bar:nth-child(1) { height: 55%; animation-delay: 0s; }
.room-screen-bar:nth-child(2) { height: 75%; animation-delay: 0.15s; }
.room-screen-bar:nth-child(3) { height: 60%; animation-delay: 0.3s; }
.room-screen-bar:nth-child(4) { height: 85%; animation-delay: 0.45s; }
.room-screen-bar:nth-child(5) { height: 70%; animation-delay: 0.6s; }
.room-screen-bar:nth-child(6) { height: 90%; animation-delay: 0.75s; }
.room-screen-bar:nth-child(7) { height: 50%; animation-delay: 0.9s; }
.room-screen-bar:nth-child(8) { height: 80%; animation-delay: 1.05s; }
.room-screen-bar:nth-child(9) { height: 65%; animation-delay: 1.2s; }

@keyframes barRise {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* 会议室桌 - 更精致 */
.room-table {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  width: 340px;
  height: 85px;
  background: linear-gradient(180deg, rgba(20,45,70,0.7) 0%, rgba(10,26,46,0.9) 100%);
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.03);
}

.room-table::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  height: 55px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.04);
}

/* 桌面平板 - 更真实 */
.room-pad {
  position: absolute;
  bottom: 90px;
  width: 54px;
  height: 38px;
  background: linear-gradient(135deg, #1a3a5c 0%, #0d2340 100%);
  border-radius: 5px;
  border: 1px solid rgba(6,182,212,0.15);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.room-pad::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 6px;
  right: 6px;
  bottom: 3px;
  background: linear-gradient(135deg, rgba(6,182,212,0.12) 0%, rgba(27,95,158,0.08) 100%);
  border-radius: 3px;
  border: 1px solid rgba(255,255,255,0.05);
}

.room-pad:nth-child(2) { left: 30px; transform: rotate(-6deg); }
.room-pad:nth-child(3) { left: 50%; transform: translateX(-50%); width: 58px; height: 40px; }
.room-pad:nth-child(4) { right: 30px; transform: rotate(6deg); }

/* 浮动标签 - 大厂级 */
.room-tag {
  position: absolute;
  padding: 8px 16px;
  background: rgba(10,26,46,0.92);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  font-size: 0.6875rem;
  color: #c5ced9;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: tagFloat 5s ease-in-out infinite;
  z-index: 10;
}

@keyframes tagFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.room-tag .tag-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #67E8F9;
  box-shadow: 0 0 8px rgba(103,232,249,0.5);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.room-tag-1 { top: 0; right: 15px; animation-delay: -1.5s; }
.room-tag-2 { top: 35px; left: 5px; animation-delay: -3.5s; }

/* 粒子效果 */
.room-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.room-particle {
  position: absolute;
  width: 2px; height: 2px;
  border-radius: 50%;
  background: #67E8F9;
  opacity: 0;
  animation: drift 7s ease-in-out infinite;
}

.room-particle:nth-child(1) { top: 15%; left: 10%; animation-delay: 0s; }
.room-particle:nth-child(2) { top: 25%; left: 85%; animation-delay: 1.5s; }
.room-particle:nth-child(3) { top: 65%; left: 20%; animation-delay: 3s; }
.room-particle:nth-child(4) { top: 40%; left: 70%; animation-delay: 4.5s; }
.room-particle:nth-child(5) { top: 50%; left: 30%; animation-delay: 2s; }

@keyframes drift {
  0%, 100% { opacity: 0; transform: translate(0, 0); }
  25% { opacity: 0.7; }
  50% { opacity: 0.3; transform: translate(15px, -25px); }
  75% { opacity: 0; }
}

/* ============================================================
   V3 旗舰升级 · 产品生态体系展示
   ============================================================ */
.ecosystem-v3 {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: start;
}

.ecosystem-v3-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all 0.4s ease;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  overflow: hidden;
}

.ecosystem-v3-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--brand-blue));
  opacity: 0;
  transition: opacity 0.4s;
}

.ecosystem-v3-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(6,182,212,0.3);
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.4);
}

.ecosystem-v3-card:hover::before { opacity: 1; }

/* 连接线 */
.ecosystem-v3-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-sm);
}

.ecosystem-v3-line {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, rgba(6,182,212,0.3), rgba(27,95,158,0.3));
  position: relative;
}

.ecosystem-v3-line::after {
  content: "";
  position: absolute;
  right: -4px;
  top: -3px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(6,182,212,0.4);
}

.ecosystem-v3-card .eco-v3-num {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--cyan-light);
  line-height: 1;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.ecosystem-v3-card:hover .eco-v3-num { opacity: 0.8; }

.ecosystem-v3-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-on-dark);
  margin-bottom: var(--space-sm);
}

.ecosystem-v3-card .eco-v3-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--cyan-light);
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.ecosystem-v3-card p {
  font-size: 0.875rem;
  color: var(--text-on-dark-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.ecosystem-v3-card .eco-v3-features {
  list-style: none;
  padding: 0;
}

.ecosystem-v3-card .eco-v3-features li {
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  padding: 5px 0 5px 18px;
  position: relative;
  line-height: 1.5;
}

.ecosystem-v3-card .eco-v3-features li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 10px; height: 6px;
  border-left: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(-45deg);
}

/* ============================================================
   V3 旗舰升级 · 首页行业场景卡片
   ============================================================ */
.home-scene-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
}

.home-scene-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  border: 1px solid var(--border);
}

.home-scene-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-blue);
}

.home-scene-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  transition: transform 0.6s ease;
}

.home-scene-card:hover .home-scene-bg { transform: scale(1.05); }

.hs-gov { background: linear-gradient(160deg, #0f1b2d 0%, #1a3550 50%, #0d2340 100%); }
.hs-gov::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 60% 30%, rgba(27,95,158,0.25) 0%, transparent 60%);
}
.hs-soe { background: linear-gradient(160deg, #0d2340 0%, #15355a 50%, #0a1a30 100%); }
.hs-soe::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 40% 50%, rgba(234,88,12,0.18) 0%, transparent 50%);
}
.hs-fin { background: linear-gradient(160deg, #0a1a2e 0%, #12304a 50%, #0c2238 100%); }
.hs-fin::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(16,185,129,0.18) 0%, transparent 50%);
}
.hs-edu { background: linear-gradient(160deg, #0f1b2b 0%, #1a2d48 50%, #0e1d34 100%); }
.hs-edu::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 60% 30%, rgba(99,102,241,0.18) 0%, transparent 50%);
}
.hs-ent { background: linear-gradient(160deg, #0b1828 0%, #152840 50%, #091a2e 100%); }
.hs-ent::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(27,95,158,0.15) 0%, transparent 50%);
}

.home-scene-content {
  position: relative;
  z-index: 2;
}

.home-scene-content h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-on-dark);
  margin-bottom: 4px;
}

.home-scene-content p {
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  line-height: 1.5;
}

/* ============================================================
   V3 旗舰升级 · 产品页面生态体系
   ============================================================ */
.product-hero-v3 {
  padding: 140px 0 60px;
  background: linear-gradient(160deg, #0a1a2e 0%, #102a43 40%, #0d2340 100%);
  position: relative;
  overflow: hidden;
}

.product-hero-v3::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(6,182,212,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(27,95,158,0.1) 0%, transparent 50%);
}

.product-hero-v3 .container { position: relative; z-index: 1; }

.product-hero-v3 h1 {
  color: var(--text-on-dark);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.product-hero-v3 .product-hero-sub {
  color: var(--text-on-dark-muted);
  font-size: 1.0625rem;
  max-width: 650px;
  line-height: 1.7;
}

/* ============================================================
   V3 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .ecosystem-v3 { grid-template-columns: 1fr; gap: var(--space-md); }
  .ecosystem-v3-connector { display: none; }
  .home-scene-grid { grid-template-columns: repeat(3, 1fr); }
  .room-screen { width: 240px; height: 130px; }
  .room-table { width: 260px; height: 65px; }
}

@media (max-width: 768px) {
  .hero-visual-v3 { height: 320px; width: 100%; max-width: 100%; min-width: 0; }
  .meeting-room { width: min(340px, 100%); max-width: 100%; height: 280px; transform: none; background: rgba(255,255,255,0.03); border: 1px solid rgba(6,182,212,0.18); border-radius: 24px; box-shadow: 0 0 48px rgba(6,182,212,0.12), inset 0 1px 0 rgba(255,255,255,0.05); }
  .hero-text { width: 100%; max-width: 100%; min-width: 0; }
  .hero-actions { width: 100%; max-width: 100%; min-width: 0; flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { width: 100%; max-width: 100%; min-width: 0; }
  .hero-content { grid-template-columns: minmax(0, 1fr); padding-left: 24px; padding-right: 24px; }
  .hero-subtitle { max-width: 100%; }
  .home-scene-grid { grid-template-columns: repeat(2, 1fr); }
  .home-scene-card { min-height: 160px; }
  .room-screen { width: 200px; height: 110px; }
  .room-table { width: 220px; height: 55px; bottom: 40px; }
  .room-pad { bottom: 65px; }
}
   ============================================================ */
@media (max-width: 1024px) {
  .brand-choice-grid { grid-template-columns: repeat(2, 1fr); }
  .case-showcase-body { grid-template-columns: 1fr; }
  .case-showcase-col:not(:last-child)::after { display: none; }
  .case-showcase-col { border-bottom: 1px solid var(--border); }
  .case-showcase-col:last-child { border-bottom: none; }
  .solution-scene-grid { grid-template-columns: 1fr; }
  .meeting-space { transform: scale(0.85); }
}

@media (max-width: 768px) {
  .brand-choice-grid { grid-template-columns: 1fr; }
  .brand-choice-num { font-size: 2rem; }
  .narrative-section h2 { font-size: 1.5rem; }
  .case-showcase-header { flex-direction: column; align-items: flex-start; gap: var(--space-md); padding: var(--space-lg); }
  .case-featured-stats { grid-template-columns: repeat(2, 1fr); }
  .solution-scene-card { min-height: 220px; padding: var(--space-lg); }
  .meeting-space { transform: scale(0.65); }
  .meeting-table { width: 220px; height: 60px; }
  .meeting-screen { width: 180px; height: 100px; }
}

/* ============================================================
   FINAL POLISH · 品牌资产数据表达
   ============================================================ */
.brand-asset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.brand-asset-col {
  padding: var(--space-xl) var(--space-lg);
  position: relative;
  transition: all 0.4s ease;
}

.brand-asset-col:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: var(--border);
}

.brand-asset-col:hover { background: var(--bg-hover); }

.brand-asset-num {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--brand-blue);
  opacity: 0.12;
  margin-bottom: -8px;
}

.brand-asset-col:hover .brand-asset-num { opacity: 0.2; }

.brand-asset-col h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: var(--space-sm) 0 var(--space-xs);
}

.brand-asset-col .brand-asset-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.brand-asset-stat {
  margin-top: var(--space-md);
  display: flex;
  gap: var(--space-md);
}

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

.brand-asset-stat-val {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand-blue);
  line-height: 1;
}

.brand-asset-stat-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================================
   FINAL POLISH · 案例旗舰展示
   ============================================================ */
.flagship-case {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.flagship-case-visual {
  position: relative;
  min-height: 400px;
  background: linear-gradient(160deg, #0a1a2e 0%, #102a43 40%, #0d2340 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.flagship-case-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(6,182,212,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(27,95,158,0.12) 0%, transparent 50%);
}

.flagship-case-visual-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.flagship-case-client-name {
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-sm);
}

.flagship-case-client-sub {
  font-size: 0.9375rem;
  color: var(--cyan-light);
  padding: 6px 16px;
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.2);
  border-radius: var(--radius-full);
  display: inline-block;
}

.flagship-case-info {
  padding: var(--space-xl) var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.flagship-case-info h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.flagship-case-meta {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.flagship-case-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.flagship-case-meta-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--brand-blue);
}

.flagship-case-sections {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.flagship-case-section {
  padding: var(--space-md);
  background: var(--bg-hover);
  border-radius: var(--radius-md);
}

.flagship-case-section h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--brand-blue);
}

.flagship-case-section p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.flagship-case-stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.flagship-case-stat {
  text-align: center;
}

.flagship-case-stat .fs-val {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--brand-blue);
}

.flagship-case-stat .fs-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* ============================================================
   FINAL POLISH · 产品生态关系图
   ============================================================ */
.eco-diagram {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-xl) 0;
}

.eco-center {
  width: 200px;
  height: 200px;
  margin: 0 auto;
  background: var(--brand-blue-gradient);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 60px rgba(27,95,158,0.3);
}

.eco-center h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: white;
  margin-bottom: 4px;
}

.eco-center p {
  font-size: 0.75rem;
  opacity: 0.8;
}

.eco-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 380px;
  height: 380px;
  border: 1px dashed rgba(27,95,158,0.2);
  border-radius: 50%;
  z-index: 1;
  animation: ecoRotate 60s linear infinite;
}

.eco-ring-2 {
  width: 540px;
  height: 540px;
  border-color: rgba(27,95,158,0.1);
  animation-duration: 90s;
  animation-direction: reverse;
}

@keyframes ecoRotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 卫星节点 */
.eco-satellite {
  position: absolute;
  width: 120px;
  padding: var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  z-index: 3;
  transition: all var(--transition);
}

.eco-satellite:hover {
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.eco-sat-icon {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.eco-sat h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.eco-sat p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* 6个卫星位置 - 用flex布局覆盖 */
.eco-satellites {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 800px;
  margin: var(--space-2xl) auto 0;
}

/* ============================================================
   FINAL POLISH · 知识中心入口
   ============================================================ */
.knowledge-entrance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.knowledge-entrance {
  position: relative;
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  text-decoration: none;
  color: inherit;
  transition: all 0.4s ease;
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-card);
}

.knowledge-entrance::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--brand-blue-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.knowledge-entrance:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-blue);
}

.knowledge-entrance:hover::after { transform: scaleX(1); }

.knowledge-entrance .ke-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.ke-bg1 { background: linear-gradient(135deg, rgba(27,95,158,0.12), rgba(37,99,235,0.06)); }
.ke-bg2 { background: linear-gradient(135deg, rgba(6,182,212,0.12), rgba(34,211,238,0.06)); }
.ke-bg3 { background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(52,211,153,0.06)); }
.ke-bg4 { background: linear-gradient(135deg, rgba(234,88,12,0.10), rgba(249,115,22,0.05)); }

.knowledge-entrance h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.knowledge-entrance p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.knowledge-entrance .ke-count {
  font-size: 0.75rem;
  color: var(--brand-blue);
  font-weight: 500;
}

/* ============================================================
   FINAL POLISH · 方案场景增强
   ============================================================ */
.sol-scene {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.sol-scene-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  text-decoration: none;
  display: block;
}

.sol-scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-blue);
}

.sol-scene-top {
  height: 140px;
  position: relative;
  overflow: hidden;
}

.sol-scene-top.gov-bg {
  background: linear-gradient(160deg, #0f1b2d, #1a3550);
}
.sol-scene-top.gov-bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 60% 40%, rgba(27,95,158,0.2), transparent 70%);
  background-image: repeating-linear-gradient(0deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 1px, transparent 1px, transparent 40px),
                    repeating-linear-gradient(90deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 1px, transparent 1px, transparent 40px);
}

.sol-scene-top.soe-bg {
  background: linear-gradient(160deg, #0d2340, #15355a);
}
.sol-scene-top.soe-bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 40% 60%, rgba(234,88,12,0.15), transparent 60%);
}

.sol-scene-top.fin-bg {
  background: linear-gradient(160deg, #0a1a2e, #12304a);
}
.sol-scene-top.fin-bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(16,185,129,0.15), transparent 60%);
}

.sol-scene-top.edu-bg {
  background: linear-gradient(160deg, #0f1b2b, #1a2d48);
}
.sol-scene-top.edu-bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 60% 30%, rgba(99,102,241,0.15), transparent 60%);
}

.sol-scene-top.ent-bg {
  background: linear-gradient(160deg, #0b1828, #152840);
}
.sol-scene-top.ent-bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(27,95,158,0.12), transparent 50%);
}

.sol-scene-label {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  padding: 4px 12px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.1);
}

.sol-scene-body {
  padding: var(--space-lg);
  background: var(--bg-card);
}

.sol-scene-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.sol-scene-body .sol-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
}

.sol-scene-body .sol-tag {
  font-size: 0.6875rem;
  padding: 2px 8px;
  background: var(--brand-blue-light);
  color: var(--brand-blue);
  border-radius: var(--radius-full);
}

.sol-scene-body p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================================
   FINAL POLISH · 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .brand-asset-grid { grid-template-columns: repeat(2, 1fr); }
  .flagship-case { grid-template-columns: 1fr; }
  .flagship-case-visual { min-height: 240px; }
  .flagship-case-sections { grid-template-columns: 1fr; }
  .knowledge-entrance-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-scene { grid-template-columns: 1fr; }
  .eco-satellites { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .brand-asset-grid { grid-template-columns: 1fr; }
  .brand-asset-num { font-size: 2.5rem; }
  .flagship-case-info { padding: var(--space-lg); }
  .knowledge-entrance-grid { grid-template-columns: 1fr; }
  .flagship-case-stats { flex-wrap: wrap; gap: var(--space-md); }
}

/* ============================================================
   FINAL FIX · 生态体系图重制 - 环线可见 + 卫星融合深色
   ============================================================ */
.eco-diagram-final {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
  padding: var(--space-xl) 0;
  min-height: 260px;
}

.eco-center-final {
  width: 180px;
  height: 180px;
  margin: 0 auto;
  background: var(--brand-blue-gradient);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 60px rgba(27,95,158,0.4), 0 0 120px rgba(27,95,158,0.15);
}

.eco-center-final h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: white;
  margin-bottom: 4px;
  line-height: 1.3;
}

.eco-center-final p {
  font-size: 0.75rem;
  opacity: 0.85;
}

.eco-ring-final {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 280px;
  height: 280px;
  border: 2px solid rgba(6,182,212,0.35);
  border-radius: 50%;
  z-index: 1;
  animation: ecoRotateFix 60s linear infinite;
  pointer-events: none;
}

.eco-ring-final-2 {
  width: 360px;
  height: 360px;
  border-color: rgba(27,95,158,0.25);
  border-style: dashed;
  animation-duration: 90s;
  animation-direction: reverse;
}

@keyframes ecoRotateFix {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 卫星卡片 - 深色融合 */
.eco-satellites-final {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 800px;
  margin: 0 auto;
}

.eco-sat-final {
  padding: var(--space-md) var(--space-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition);
}

.eco-sat-final:hover {
  background: rgba(6,182,212,0.08);
  border-color: rgba(6,182,212,0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}

.eco-sat-icon-final {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.eco-sat-final h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-on-dark);
  margin-bottom: 4px;
}

.eco-sat-final p {
  font-size: 0.75rem;
  color: var(--text-on-dark-muted);
}

@media (max-width: 768px) {
  .eco-satellites-final { grid-template-columns: repeat(2, 1fr); }
  .eco-center-final { width: 140px; height: 140px; }
  .eco-ring-final { width: 220px; height: 220px; }
  .eco-ring-final-2 { width: 280px; height: 280px; }
}

/* ---------- 专题页 / 解决方案页模板 ---------- */
.topic-hero {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 96px 0 48px;
  position: relative;
  overflow: hidden;
}

.topic-hero-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
  z-index: 1;
}

.topic-hero h1 {
  color: var(--text-on-dark);
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.topic-subtitle {
  color: var(--text-on-dark-muted);
  font-size: 1.0625rem;
  line-height: 1.8;
  max-width: 760px;
}

.topic-body {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

.topic-body h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--brand-blue);
  display: inline-block;
}

.topic-body h2:first-child {
  margin-top: 0;
}

.topic-body h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.topic-body p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.topic-body ul,
.topic-body ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.topic-body li {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.topic-body blockquote {
  border-left: 4px solid var(--brand-blue);
  padding: var(--space-sm) var(--space-md);
  margin: var(--space-md) 0;
  background: var(--brand-blue-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}

.topic-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.9375rem;
}

.topic-body th,
.topic-body td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  text-align: left;
}

.topic-body th {
  background: var(--bg-hover);
  font-weight: 600;
  color: var(--text-primary);
}

/* ---------- 知识文章页模板 ---------- */
.article-layout {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

.article-header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.article-header h1 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin: var(--space-sm) 0;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
}

.article-meta span:not(:last-child)::after {
  content: "|";
  margin-left: var(--space-md);
  color: var(--border);
}

.article-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.article-content h2:first-child {
  margin-top: 0;
}

.article-content h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.article-content p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.article-content li {
  margin-bottom: var(--space-xs);
  line-height: 1.8;
}

.article-content blockquote {
  border-left: 4px solid var(--brand-blue);
  padding: var(--space-sm) var(--space-md);
  margin: var(--space-md) 0;
  background: var(--brand-blue-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.9375rem;
}

.article-content th,
.article-content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  text-align: left;
}

.article-content th {
  background: var(--bg-hover);
  font-weight: 600;
  color: var(--text-primary);
}

/* ---------- 专题/文章页响应式 ---------- */
@media (max-width: 768px) {
  .topic-hero { padding: 64px 0 32px; }
  .topic-hero h1 { font-size: 1.625rem; }
  .topic-subtitle { font-size: 0.9375rem; }
  .topic-body { padding: var(--space-xl) var(--space-sm); }
  .topic-body h2 { font-size: 1.25rem; }
  .article-layout { padding: var(--space-xl) var(--space-sm); }
  .article-header h1 { font-size: 1.5rem; }
  .article-content h2 { font-size: 1.25rem; }
  .article-meta { gap: var(--space-sm); }
  .article-meta span:not(:last-child)::after { margin-left: var(--space-sm); }
}

/* ---------- 产品页：会前 / 会中 / 会后真实界面 ---------- */
.product-version-note {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--space-md);
  padding: 10px 16px;
  border: 1px solid rgba(103, 232, 249, 0.28);
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.08);
  color: #D7F7FC;
  font-size: 0.9375rem;
}

.product-version-note strong {
  color: #FFFFFF;
  font-weight: 600;
}

.product-workflow {
  background:
    radial-gradient(circle at 92% 8%, rgba(6, 182, 212, 0.09), transparent 26%),
    var(--bg-white);
}

.product-shot-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.product-shot-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.product-shot-card:hover {
  transform: translateY(-4px);
  border-color: rgba(27, 95, 158, 0.28);
  box-shadow: var(--shadow-card-hover);
}

.product-shot-card > img {
  width: 100%;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  background: var(--silver-light);
  border-bottom: 1px solid var(--border-light);
}

.product-shot-card figcaption {
  padding: 22px 22px 24px;
}

.product-shot-card h3 {
  margin: 6px 0 10px;
  font-size: 1.1875rem;
  font-weight: 600;
}

.product-shot-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.product-shot-index {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-full);
  background: rgba(10, 26, 46, 0.76);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  backdrop-filter: blur(8px);
}

.product-shot-stage {
  display: inline-block;
  color: var(--cyan-dark);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.product-version-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.5fr);
  gap: 1px;
  overflow: hidden;
  margin-top: var(--space-lg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--border);
}

.product-version-panel > div {
  display: grid;
  gap: 3px;
  padding: 20px 24px;
  background: var(--silver-light);
}

.product-version-panel strong {
  color: var(--text-primary);
  font-size: 1.0625rem;
  font-weight: 600;
}

.product-fact-label {
  color: var(--brand-blue);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.product-fact-detail {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

@media (max-width: 1024px) {
  .product-shot-grid { grid-template-columns: 1fr; }
  .product-shot-card { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr); }
  .product-shot-card > img { height: auto; aspect-ratio: 8 / 5; border-bottom: 0; border-right: 1px solid var(--border-light); }
  .product-shot-card figcaption { align-self: center; }
}

@media (max-width: 640px) {
  .product-version-note { border-radius: var(--radius-md); }
  .product-shot-card { display: block; }
  .product-shot-card > img { height: auto; border-right: 0; border-bottom: 1px solid var(--border-light); }
  .product-version-panel { grid-template-columns: 1fr; }
}