/* ==========================================
   也觉智能 - AI解决方案企业网站
   现代、响应式、高性能CSS
   ========================================== */

/* CSS 变量 */
:root {
  --primary: #2956ff;
  --primary-dark: #1a3fd1;
  --primary-light: #5a7fff;
  --secondary: #00c6ff;
  --accent: #7b2ff7;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a68;
  --text-muted: #8a8aa3;
  --bg-primary: #ffffff;
  --bg-secondary: #f4f8fc;
  --bg-dark: #0f172a;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1200px;
  --header-height: 72px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

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

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(41, 86, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(41, 86, 255, 0.45);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(41, 86, 255, 0.04);
}

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

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* 通用区块 */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-title .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* 导航栏 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.logo svg {
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
}

.nav-list {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  transition: var(--transition);
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  transition: var(--transition);
  border-radius: 2px;
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero 区域 */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background: linear-gradient(180deg, #f0f4ff 0%, #ffffff 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: orbFloat 10s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: linear-gradient(135deg, #2956ff, #00c6ff);
  top: -10%;
  right: -5%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, #7b2ff7, #f107a3);
  bottom: -10%;
  left: -5%;
  animation-delay: -3s;
  opacity: 0.3;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, #00d2ff, #3a7bd5);
  top: 40%;
  left: 30%;
  animation-delay: -6s;
  opacity: 0.2;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(41, 86, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(41, 86, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(41, 86, 255, 0.08);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-features {
  display: flex;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--text-secondary);
}

.feature-item .icon {
  width: 20px;
  height: 20px;
  color: #10b981;
}

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

/* AI大脑视觉 */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.ai-brain {
  position: relative;
  width: 400px;
  height: 400px;
}

.brain-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(41, 86, 255, 0.4);
  animation: corePulse 3s ease-in-out infinite;
}

@keyframes corePulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.1); }
}

.brain-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(41, 86, 255, 0.15);
}

.ring-1 { width: 160px; height: 160px; }
.ring-2 { width: 240px; height: 240px; }
.ring-3 { width: 320px; height: 320px; }

.orbit-node {
  position: absolute;
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  color: var(--primary);
}

.orbit-node svg {
  width: 24px;
  height: 24px;
}

.node-1 {
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  animation: orbit1 8s linear infinite;
}

.node-2 {
  top: 50%;
  right: 5%;
  transform: translateY(-50%);
  animation: orbit2 10s linear infinite;
}

.node-3 {
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  animation: orbit3 8s linear infinite;
}

.node-4 {
  top: 50%;
  left: 5%;
  transform: translateY(-50%);
  animation: orbit4 10s linear infinite;
}

@keyframes orbit1 {
  0% { transform: translateX(-50%) rotate(0deg) translateX(140px) rotate(0deg); }
  100% { transform: translateX(-50%) rotate(360deg) translateX(140px) rotate(-360deg); }
}

@keyframes orbit2 {
  0% { transform: translateY(-50%) rotate(0deg) translateX(140px) rotate(0deg); }
  100% { transform: translateY(-50%) rotate(360deg) translateX(140px) rotate(-360deg); }
}

@keyframes orbit3 {
  0% { transform: translateX(-50%) rotate(0deg) translateX(-140px) rotate(0deg); }
  100% { transform: translateX(-50%) rotate(360deg) translateX(-140px) rotate(-360deg); }
}

@keyframes orbit4 {
  0% { transform: translateY(-50%) rotate(0deg) translateX(-140px) rotate(0deg); }
  100% { transform: translateY(-50%) rotate(360deg) translateX(-140px) rotate(-360deg); }
}

/* 滚动指示器 */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
}

.mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* 交付能力 */
.capabilities {
  background: var(--bg-secondary);
}

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

.cap-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.cap-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.cap-icon {
  margin-bottom: 20px;
}

.icon-bg {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-bg svg {
  width: 28px;
  height: 28px;
  color: white;
}

.icon-bg-1 { background: linear-gradient(135deg, #2956ff, #00c6ff); }
.icon-bg-2 { background: linear-gradient(135deg, #7b2ff7, #f107a3); }
.icon-bg-3 { background: linear-gradient(135deg, #00d2ff, #3a7bd5); }
.icon-bg-4 { background: linear-gradient(135deg, #f093fb, #f5576c); }

.cap-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.cap-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.cap-decoration {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 120px;
  height: 120px;
  opacity: 0;
  transition: var(--transition);
}

.cap-card:hover .cap-decoration {
  opacity: 1;
  transform: scale(1.1);
}

/* AI落地场景 */
.scenes {
  background: linear-gradient(180deg, #ffffff 0%, #f4f8fc 100%);
}

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

.scene-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  min-height: 280px;
  display: flex;
  flex-direction: column;
}

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

.scene-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.scene-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.scene-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.scene-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}


.scene-visual {
  margin-top: 16px;
  height: 110px;
  position: relative;
}

/* ---- scene-v1: AI工作流 ----
   对应原图: 浏览器窗口 + 流程节点 + 绿色勾选
*/
.scene-v1 .flow-browser {
  width: 100%;
  height: 90px;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: relative;
}

.flow-browser-header {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}

.flow-browser-header span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.flow-browser-header span:nth-child(1) { background: #ef4444; }
.flow-browser-header span:nth-child(2) { background: #f59e0b; }
.flow-browser-header span:nth-child(3) { background: #10b981; }

.flow-browser-body {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 4px;
}

.flow-step {
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
}

.flow-step.fs-1 { background: #e0e7ff; color: var(--primary); }
.flow-step.fs-2 { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; }
.flow-step.fs-3 { background: #d1fae5; color: #059669; }

.flow-step-check {
  width: 18px;
  height: 18px;
  background: #10b981;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 10px;
  font-weight: 700;
}

.flow-dashed {
  flex: 1;
  height: 1px;
  border-top: 1px dashed #c8d7ec;
  position: relative;
}

.flow-dashed::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -4px;
  border: 4px solid transparent;
  border-left: 5px solid #c8d7ec;
}

.flow-icon-badge {
  position: absolute;
  bottom: -8px;
  left: 8px;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(41,86,255,0.25);
}

.flow-icon-badge svg {
  width: 14px;
  height: 14px;
  color: white;
}

/* ---- scene-v2: AI内容创作 ----
   对应原图: 浏览器 + 输入框"请问|" + 生成文本 + 图片 + 图片选择器
*/
.scene-v2 .content-browser {
  width: 100%;
  height: 100px;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: relative;
}

.content-browser-header {
  display: flex;
  gap: 4px;
  margin-bottom: 6px;
}

.content-browser-header span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.content-browser-header span:nth-child(1) { background: #ef4444; }
.content-browser-header span:nth-child(2) { background: #f59e0b; }
.content-browser-header span:nth-child(3) { background: #10b981; }

.content-input {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.content-input-cursor {
  width: 1px;
  height: 12px;
  background: var(--primary);
  animation: blink 1s infinite;
}

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

.content-body {
  display: flex;
  gap: 8px;
}

.content-text-block {
  flex: 1;
}

.content-text-line {
  height: 5px;
  background: #f1f5f9;
  border-radius: 3px;
  margin-bottom: 4px;
}

.content-text-line:nth-child(2) { width: 85%; }
.content-text-line:nth-child(3) { width: 60%; }
.content-text-line:nth-child(4) { width: 75%; }

.content-image {
  width: 50px;
  height: 36px;
  background: linear-gradient(135deg, #c7d2fe, #e0e7ff);
  border-radius: 6px;
  flex-shrink: 0;
}

.content-picker {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.content-picker-item {
  width: 28px;
  height: 28px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.content-picker-item svg {
  width: 12px;
  height: 12px;
  color: var(--text-muted);
}

.content-pen-badge {
  position: absolute;
  bottom: -8px;
  left: 8px;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(41,86,255,0.25);
}

.content-pen-badge svg {
  width: 14px;
  height: 14px;
  color: white;
}

/* ---- scene-v3: 企业Copilot ----
   对应原图: 聊天界面 + AI头像 + 多轮对话 + 输入框
*/
.scene-v3 .chat-browser {
  width: 100%;
  height: 100px;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: relative;
}

.chat-header {
  display: flex;
  gap: 4px;
  margin-bottom: 6px;
}

.chat-header span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.chat-header span:nth-child(1) { background: #ef4444; }
.chat-header span:nth-child(2) { background: #f59e0b; }
.chat-header span:nth-child(3) { background: #10b981; }

.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chat-msg {
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

.chat-msg.user {
  flex-direction: row-reverse;
}

.chat-msg-avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-msg-avatar svg {
  width: 10px;
  height: 10px;
  color: white;
}

.chat-msg-bubble {
  padding: 5px 10px;
  background: #f1f5f9;
  border-radius: 10px;
  border-bottom-left-radius: 3px;
  font-size: 9px;
  color: var(--text-secondary);
  max-width: 70%;
  line-height: 1.4;
}

.chat-msg.user .chat-msg-bubble {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 3px;
}

.chat-input-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  padding: 4px 8px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
}

.chat-input-bar span {
  flex: 1;
  font-size: 9px;
  color: var(--text-muted);
}

.chat-send-btn {
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-send-btn svg {
  width: 8px;
  height: 8px;
  color: white;
}

/* ---- scene-v4: 企业AI中台 ----
   对应原图: 显示器 + 多面板 + 企业图标
*/
.scene-v4 .platform-browser {
  width: 100%;
  height: 100px;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: relative;
  display: flex;
  gap: 8px;
}

.platform-sidebar {
  width: 24px;
  background: linear-gradient(180deg, #e0e7ff, #c7d2fe);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 8px;
  gap: 6px;
}

.platform-sidebar-icon {
  width: 14px;
  height: 14px;
  background: white;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-sidebar-icon svg {
  width: 8px;
  height: 8px;
  color: var(--primary);
}

.platform-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.platform-card {
  background: white;
  border: 1px solid #f1f5f9;
  border-radius: 6px;
  padding: 6px;
}

.platform-card-header {
  width: 20px;
  height: 4px;
  background: #e2e8f0;
  border-radius: 2px;
  margin-bottom: 4px;
}

.platform-card-body {
  height: 16px;
  background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
  border-radius: 4px;
}

.platform-monitor-stand {
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 6px;
  background: #e2e8f0;
  border-radius: 0 0 4px 4px;
}

/* ---- scene-v5: AI打通企业内部系统 ----
   对应原图: 浏览器 + 数据统计 + 视频 + 通知 + 印章
*/
.scene-v5 .system-browser {
  width: 100%;
  height: 100px;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: relative;
}

.system-header {
  display: flex;
  gap: 4px;
  margin-bottom: 6px;
}

.system-header span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.system-header span:nth-child(1) { background: #ef4444; }
.system-header span:nth-child(2) { background: #f59e0b; }
.system-header span:nth-child(3) { background: #10b981; }

.system-stats {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
}

.system-stat {
  flex: 1;
  text-align: center;
  padding: 4px;
  background: white;
  border: 1px solid #f1f5f9;
  border-radius: 6px;
}

.system-stat-value {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-primary);
}

.system-stat-label {
  font-size: 8px;
  color: var(--text-muted);
}

.system-video {
  width: 100%;
  height: 28px;
  background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.system-video::after {
  content: '';
  width: 0;
  height: 0;
  border: 6px solid transparent;
  border-left: 8px solid white;
  margin-left: 3px;
}

.system-notify {
  position: absolute;
  top: 20px;
  right: 8px;
  padding: 3px 8px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  font-size: 8px;
  color: var(--text-secondary);
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}

.system-stamp {
  position: absolute;
  bottom: -8px;
  left: 8px;
  padding: 3px 8px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  font-size: 8px;
  color: #059669;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  gap: 4px;
}

.system-stamp svg {
  width: 10px;
  height: 10px;
}

/* ---- scene-v6: AI应用定制 ----
   对应原图: 浏览器 + 网格卡片 + 搜索 + 操作按钮
*/
.scene-v6 .app-browser {
  width: 100%;
  height: 100px;
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: relative;
}

.app-header {
  display: flex;
  gap: 4px;
  margin-bottom: 6px;
}

.app-header span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.app-header span:nth-child(1) { background: #ef4444; }
.app-header span:nth-child(2) { background: #f59e0b; }
.app-header span:nth-child(3) { background: #10b981; }

.app-search {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  margin-bottom: 6px;
}

.app-search svg {
  width: 10px;
  height: 10px;
  color: var(--text-muted);
}

.app-search-line {
  flex: 1;
  height: 4px;
  background: #f1f5f9;
  border-radius: 2px;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.app-grid-item {
  aspect-ratio: 1;
  background: white;
  border: 1px solid #f1f5f9;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.app-grid-icon {
  width: 16px;
  height: 16px;
  background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
  border-radius: 4px;
}

.app-grid-label {
  width: 16px;
  height: 3px;
  background: #f1f5f9;
  border-radius: 2px;
}

.app-actions {
  position: absolute;
  bottom: -6px;
  right: 8px;
  display: flex;
  gap: 6px;
}

.app-action-btn {
  width: 24px;
  height: 24px;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

.app-action-btn svg {
  width: 10px;
  height: 10px;
  color: var(--primary);
}

/* ==========================================
   服务流程 - 修复兼容性
   ========================================== */

.process {
  background: var(--bg-secondary);
}

.process-timeline {
  position: relative;
}

.timeline-line {
  position: absolute;
  top: 50%;
  left: 5%;
  right: 5%;
  height: 1px;
  border-top: 1px dashed #bcc0d0;
  transform: translateY(-50%);
  z-index: 0;
}

.process-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
  gap: 24px;
}

.step-card {
  flex: 1;
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 12px rgba(108, 113, 137, 0.5);
}

.step-card:hover h4 {
  font-weight: 700;
}

.step-up {
  margin-top: 0;
}

.step-down {
  margin-top: 60px;
}

.step-number {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 13px;
  font-weight: 700;
}

.step-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(41,86,255,0.1), rgba(0,198,255,0.1));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--primary);
}

.step-icon svg {
  width: 28px;
  height: 28px;
}

.step-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 应用场景实例 */
.showcase {
  background: var(--bg-secondary);
}

.showcase-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: white;
  border: 2px solid var(--border);
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn svg {
  width: 20px;
  height: 20px;
}

.tab-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(41, 86, 255, 0.3);
}

.showcase-content {
  position: relative;
}

.tab-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: white;
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.4s ease;
}

.tab-panel.active {
  display: grid;
}

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

.panel-info h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.panel-desc {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 32px;
  line-height: 1.4;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-secondary);
}

.check {
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, #10b981, #34d399);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.check::after {
  content: '';
  position: absolute;
  top: 5px;
  left: 7px;
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.panel-visual {
  display: flex;
  justify-content: center;
}

.mockup {
  width: 100%;
  max-width: 400px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.mock-header {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: rgba(0,0,0,0.03);
}

.mock-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.mock-dot:first-child { background: #ef4444; }
.mock-dot:nth-child(2) { background: #f59e0b; }
.mock-dot:nth-child(3) { background: #10b981; }

.mock-body {
  padding: 20px;
  display: flex;
  gap: 16px;
  min-height: 200px;
}

.mock-sidebar {
  width: 60px;
  background: var(--border);
  border-radius: var(--radius-sm);
}

.mock-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mock-card {
  height: 50px;
  background: white;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.mock-center {
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.mock-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  margin-bottom: 16px;
}

.mock-chat {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-bubble {
  height: 36px;
  background: white;
  border-radius: 18px;
  width: 70%;
}

.mock-bubble.mock-user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  width: 50%;
}

.mock-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  width: 100%;
}

.mock-cell {
  height: 80px;
  background: white;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

/* 联系我们 */
.contact {
  background: var(--bg-secondary);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info .section-title {
  text-align: left;
}

.contact-desc {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.contact-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(41,86,255,0.1), rgba(0,198,255,0.1));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
}

.contact-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 15px;
  color: var(--text-secondary);
}

.contact-form-wrapper {
  background: white;
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.contact-form h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 28px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  background: white;
  color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(41, 86, 255, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* 页脚 */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
}

/* 回到顶部 */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(41, 86, 255, 0.35);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(41, 86, 255, 0.45);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ==========================================
   响应式设计
   ========================================== */

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-visual {
    display: none;
  }

  .hero-features {
    justify-content: center;
  }

  .hero-actions {
    justify-content: center;
  }

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

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

  .scene-card-large {
    grid-column: span 1;
  }

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

  .tab-panel {
    grid-template-columns: 1fr;
  }

  .panel-visual {
    order: -1;
  }

  .process-steps {
    flex-wrap: wrap;
  }

  .step-card {
    flex: 1 1 calc(33.333% - 16px);
    margin-top: 0 !important;
  }

  .timeline-line {
    display: none;
  }

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

  .feature-large {
    grid-row: span 1;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  .nav-link:hover {
    background: var(--bg-secondary);
  }

  .nav-toggle {
    display: flex;
  }

  .header .btn {
    display: none;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-desc {
    font-size: 18px;
  }

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

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

  .scene-card-large {
    grid-column: span 1;
  }

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

  .showcase-tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .tab-btn {
    justify-content: center;
  }

  .tab-panel {
    padding: 28px;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }

  .step-card {
    flex: 1 1 100%;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .cta-content h2 {
    font-size: 28px;
  }

  .cta-content p {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-lg {
    width: 100%;
  }

  .section-title {
    font-size: 24px;
  }

  .contact-form-wrapper {
    padding: 24px;
  }
}

/* 滚动显示动画 */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

[data-aos="fade-right"] {
  transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-left"] {
  transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-down"] {
  transform: translateY(-30px);
}

[data-aos="fade-down"].aos-animate {
  transform: translateY(0);
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}