/* 玄晶引擎 XgenCore - 主样式表 */

/* ===== 基础变量 ===== */
:root {
  --primary: #0066FF;
  --primary-dark: #0052CC;
  --accent: #00D4FF;
  --background: #0A0A0F;
  --surface: #141419;
  --surface-light: #1a1a24;
  --text-primary: #FFFFFF;
  --text-secondary: #A0A0B0;
  --text-muted: #6B6B7B;
  --border: #2A2A3A;
  --success: #10B981;
  --warning: #F59E0B;
  
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-fluid: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

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

ul, ol {
  list-style: none;
}

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

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

/* ===== 字体引入 ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===== 通用组件 ===== */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }
}

@media (min-width: 1280px) {
  .container {
    padding: 0 48px;
  }
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 12px;
  transition: all 0.3s var(--ease-expo);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 102, 255, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

/* 卡片样式 */
.card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 24px;
  transition: all 0.3s var(--ease-expo);
}

.card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(0, 102, 255, 0.3);
  transform: translateY(-4px);
}

/* 玻璃拟态 */
.glass {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* 渐变文字 */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 发光效果 */
.glow {
  box-shadow: 0 0 40px rgba(0, 102, 255, 0.3);
}

/* 徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 100px;
  background: rgba(0, 102, 255, 0.1);
  color: var(--accent);
  border: 1px solid rgba(0, 102, 255, 0.2);
}

/* 区块标题 */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  margin-bottom: 16px;
}

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

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all 0.3s var(--ease-expo);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.nav-actions {
  display: none;
  align-items: center;
  gap: 16px;
}

.nav-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  color: white;
}

@media (min-width: 1024px) {
  .nav-links,
  .nav-actions {
    display: flex;
  }
  
  .nav-menu-btn {
    display: none;
  }
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.3s var(--ease-expo);
}

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

.mobile-menu a {
  display: block;
  padding: 16px 0;
  font-size: 18px;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== Hero区域 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(0, 102, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
    var(--background);
}

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

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.3;
  animation: float-particle 8s ease-in-out infinite;
}

@keyframes float-particle {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
  50% { transform: translateY(-30px) translateX(10px); opacity: 0.6; }
}

.hero-content {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

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

.hero-text {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0, 102, 255, 0.1);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: 100px;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 32px;
}

.hero-badge svg {
  width: 14px;
  height: 14px;
  animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.9); }
}

.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(18px, 2.5vw, 24px);
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-subtitle .highlight {
  color: var(--accent);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
}

.hero-stats .pulse {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-stats span {
  font-size: 14px;
  color: var(--text-secondary);
}

.hero-stats strong {
  color: var(--accent);
  font-weight: 600;
}

/* Hero视觉区域 */
.hero-visual {
  position: relative;
  perspective: 1000px;
}

.hero-3d-container {
  position: relative;
  transform-style: preserve-3d;
  animation: hero-float 6s ease-in-out infinite;
}

@keyframes hero-float {
  0%, 100% { transform: translateY(0) rotateX(5deg); }
  50% { transform: translateY(-20px) rotateX(-5deg); }
}

.hero-glow {
  position: absolute;
  inset: -50px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.2) 0%, transparent 70%);
  filter: blur(60px);
  z-index: -1;
}

.hero-image {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 
    0 25px 80px rgba(0, 0, 0, 0.5),
    0 0 60px rgba(0, 102, 255, 0.15);
}

.hero-image img {
  width: 100%;
  height: auto;
}

.hero-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 15, 0.8) 0%, transparent 50%);
}

.hero-float-card {
  position: absolute;
  padding: 12px 20px;
  background: rgba(20, 20, 25, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  font-size: 13px;
}

.hero-float-card.top-right {
  top: -20px;
  right: -20px;
  animation: float-card 4s ease-in-out infinite;
}

.hero-float-card.bottom-left {
  bottom: 20px;
  left: -30px;
  animation: float-card 4s ease-in-out infinite 1s;
}

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

/* ===== 痛点对比区 ===== */
.pain-comparison {
  padding: 100px 0;
  position: relative;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.comparison-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 28px;
  transition: all 0.4s var(--ease-expo);
}

.comparison-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(0, 102, 255, 0.3);
  transform: translateY(-8px);
}

.comparison-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.2), rgba(0, 212, 255, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.comparison-before {
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-bottom: 8px;
}

.comparison-after {
  font-size: 16px;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.comparison-after svg {
  color: var(--accent);
}

.comparison-metric {
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-metric .number {
  font-size: 36px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.comparison-metric .label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== 解决方案卡片 ===== */
.solutions {
  padding: 100px 0;
}

.solutions-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (min-width: 768px) {
  .solutions-grid {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .solution-card {
    flex: 1;
    min-width: 200px;
  }
}

.solution-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 28px;
  cursor: pointer;
  transition: all 0.4s var(--ease-expo);
  overflow: hidden;
}

.solution-card:hover,
.solution-card.active {
  flex: 3;
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(0, 102, 255, 0.4);
}

.solution-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: all 0.3s;
}

.solution-card:nth-child(1) .solution-icon { background: rgba(0, 102, 255, 0.15); color: #0066FF; }
.solution-card:nth-child(2) .solution-icon { background: rgba(0, 212, 255, 0.15); color: #00D4FF; }
.solution-card:nth-child(3) .solution-icon { background: rgba(124, 58, 237, 0.15); color: #7C3AED; }
.solution-card:nth-child(4) .solution-icon { background: rgba(236, 72, 153, 0.15); color: #EC4899; }
.solution-card:nth-child(5) .solution-icon { background: rgba(16, 185, 129, 0.15); color: #10B981; }

.solution-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
}

.solution-subtitle {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 16px;
}

.solution-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.4s var(--ease-expo);
}

.solution-card:hover .solution-desc,
.solution-card.active .solution-desc {
  max-height: 200px;
  opacity: 1;
  margin-top: 16px;
}

.solution-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.4s var(--ease-expo);
}

.solution-card:hover .solution-features,
.solution-card.active .solution-features {
  max-height: 100px;
  opacity: 1;
}

.solution-features span {
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* ===== 时间线 ===== */
.timeline {
  padding: 100px 0;
}

.timeline-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 1024px) {
  .timeline-content {
    grid-template-columns: 1fr 1fr;
  }
}

.timeline-image {
  position: relative;
}

.timeline-image img {
  width: 100%;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-stats {
  position: absolute;
  bottom: -20px;
  left: 20px;
  right: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 20px;
  background: rgba(20, 20, 25, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  backdrop-filter: blur(20px);
}

.timeline-stats .stat {
  text-align: center;
}

.timeline-stats .stat-value {
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.timeline-stats .stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.timeline-events {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.timeline-event {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.3s var(--ease-expo);
  position: relative;
  overflow: hidden;
}

.timeline-event:hover,
.timeline-event.active {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(0, 102, 255, 0.4);
}

.timeline-event.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  animation: progress 4s linear;
}

@keyframes progress {
  from { width: 0; }
  to { width: 100%; }
}

.event-time {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(0, 102, 255, 0.1);
  border-radius: 8px;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 12px;
}

.event-time .dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.event-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.event-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

.event-detail {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.3s var(--ease-expo);
}

.timeline-event.active .event-detail {
  max-height: 100px;
  opacity: 1;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.event-metrics {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.event-metrics span {
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  font-size: 12px;
}

.event-metrics .label {
  color: var(--text-muted);
}

.event-metrics .value {
  color: var(--accent);
  font-weight: 500;
}

/* ===== 核心优势 ===== */
.advantages {
  padding: 100px 0;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.advantage-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 32px;
  text-align: center;
  transition: all 0.4s var(--ease-expo);
  position: relative;
  overflow: hidden;
}

.advantage-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 102, 255, 0.3);
}

.advantage-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

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

.advantage-icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.2), rgba(0, 212, 255, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin: 0 auto 24px;
}

.advantage-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 4px;
}

.advantage-subtitle {
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 16px;
}

.advantage-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.advantage-stat {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.advantage-stat .number {
  font-size: 42px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.advantage-stat .label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== 客户证言 ===== */
.testimonials {
  padding: 100px 0;
  overflow: hidden;
}

.testimonials-marquee {
  display: flex;
  gap: 24px;
  animation: marquee 40s linear infinite;
}

.testimonials:hover .testimonials-marquee {
  animation-play-state: paused;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.testimonial-card {
  flex-shrink: 0;
  width: 380px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 28px;
  transition: all 0.3s var(--ease-expo);
}

.testimonial-card:hover {
  transform: scale(1.02);
  border-color: rgba(0, 102, 255, 0.3);
}

.testimonial-quote {
  color: var(--primary);
  margin-bottom: 16px;
}

.testimonial-content {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.testimonial-rating {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
}

.testimonial-rating svg {
  width: 16px;
  height: 16px;
  fill: var(--accent);
  color: var(--accent);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.testimonial-author img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.testimonial-author .name {
  font-weight: 600;
  margin-bottom: 2px;
}

.testimonial-author .role {
  font-size: 13px;
  color: var(--text-secondary);
}

.testimonial-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 102, 255, 0.1);
  border-radius: 100px;
  font-size: 12px;
  color: var(--accent);
  margin-top: 12px;
}

/* ===== CTA区域 ===== */
.cta {
  padding: 120px 0;
  position: relative;
  text-align: center;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at center, rgba(0, 102, 255, 0.1) 0%, transparent 60%),
    var(--background);
}

.cta-stars {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: white;
  border-radius: 50%;
  animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 0.8; }
}

.cta-content {
  position: relative;
  z-index: 10;
  max-width: 700px;
  margin: 0 auto;
}

.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0, 102, 255, 0.1);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: 100px;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 32px;
}

.cta-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  margin-bottom: 24px;
}

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

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
}

.cta-secondary {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.cta-secondary a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.3s;
}

.cta-secondary a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.cta-trust {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.cta-trust p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.cta-trust .badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 页脚 ===== */
.footer {
  padding: 80px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 48px;
  margin-bottom: 64px;
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 20px 0;
}

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

.footer-contact a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-column h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.footer-column a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.footer-social a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

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

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

/* ===== AI导购助手 ===== */
.ai-guide {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1001;
}

.ai-guide-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.4);
  transition: all 0.3s var(--ease-expo);
  position: relative;
}

.ai-guide-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(0, 102, 255, 0.5);
}

.ai-guide-btn .pulse {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 10px;
  height: 10px;
  background: var(--success);
  border-radius: 50%;
  border: 2px solid var(--primary);
  animation: pulse 2s infinite;
}

.ai-guide-chat {
  position: absolute;
  bottom: 72px;
  right: 0;
  width: 360px;
  max-width: calc(100vw - 48px);
  height: 480px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  pointer-events: none;
  transition: all 0.3s var(--ease-expo);
}

.ai-guide-chat.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.ai-guide-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 255, 0.05));
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.ai-guide-header .info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ai-guide-header .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-guide-header .status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.ai-guide-header .status .dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.ai-guide-header .close {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.ai-guide-header .close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.ai-guide-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ai-message {
  display: flex;
  gap: 12px;
}

.ai-message.user {
  flex-direction: row-reverse;
}

.ai-message .avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-message.ai .avatar {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
}

.ai-message.user .avatar {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.ai-message .content {
  max-width: 75%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.6;
}

.ai-message.ai .content {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border-top-left-radius: 4px;
}

.ai-message.user .content {
  background: var(--primary);
  color: white;
  border-top-right-radius: 4px;
}

.ai-message .suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.ai-message .suggestions button {
  padding: 8px 14px;
  background: rgba(0, 102, 255, 0.1);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: 100px;
  font-size: 12px;
  color: var(--accent);
  transition: all 0.2s;
}

.ai-message .suggestions button:hover {
  background: rgba(0, 102, 255, 0.2);
}

.ai-message .typing {
  display: flex;
  gap: 4px;
  padding: 16px;
}

.ai-message .typing span {
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  animation: typing 1.4s ease-in-out infinite;
}

.ai-message .typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-message .typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-10px); }
}

.ai-guide-input {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.ai-guide-input input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  font-size: 14px;
  color: white;
  outline: none;
  transition: all 0.2s;
}

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

.ai-guide-input input:focus {
  border-color: rgba(0, 102, 255, 0.4);
}

.ai-guide-input button {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all 0.2s;
}

.ai-guide-input button:hover {
  background: var(--primary-dark);
}

.ai-guide-footer {
  padding: 8px;
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== 滚动动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s var(--ease-expo);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .section-header {
    margin-bottom: 40px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .comparison-grid,
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  
  .timeline-stats {
    grid-template-columns: 1fr;
    position: relative;
    bottom: auto;
    left: auto;
    right: auto;
    margin-top: 20px;
  }
  
  .testimonial-card {
    width: 300px;
  }
  
  .footer-grid {
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ===== 选择 ===== */
::selection {
  background: rgba(0, 102, 255, 0.3);
  color: white;
}