/* ===== 基础变量 ===== */
:root {
  --color-bg: #050508;
  --color-bg-secondary: #0a0a0f;
  --color-bg-card: rgba(255, 255, 255, 0.03);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-primary: #00d4ff;
  --color-secondary: #a855f7;
  --color-accent: #06b6d4;
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #a855f7 100%);
  --gradient-glow: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
  --font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 背景效果 ===== */
.particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

.grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  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: 60px 60px;
  pointer-events: none;
}

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
  top: -200px;
  right: -100px;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.2) 0%, transparent 70%);
  bottom: 10%;
  left: -200px;
}

.glow-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
  top: 50%;
  right: -150px;
}

/* ===== 导航栏 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(5, 5, 8, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--color-border);
  padding: 12px 0;
}

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

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

.logo-icon {
  width: 40px;
  height: 40px;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: var(--transition);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background: rgba(0, 212, 255, 0.05);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

/* ===== Hero 区域 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--color-primary);
  margin-bottom: 24px;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

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

.stat-item {
  position: relative;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  backdrop-filter: blur(10px);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 8px;
}

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

/* Hero 视觉 */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.tech-orbit {
  position: relative;
  width: 420px;
  height: 420px;
}

.orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 50%;
}

.orbit-1 { width: 420px; height: 420px; animation: rotate 20s linear infinite; }
.orbit-2 { width: 300px; height: 300px; animation: rotate 15s linear infinite reverse; }
.orbit-3 { width: 180px; height: 180px; animation: rotate 10s linear infinite; }

.orbit-node {
  position: absolute;
  border-radius: 50%;
  background: var(--gradient-primary);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.node-1 { width: 16px; height: 16px; top: -8px; left: 50%; transform: translateX(-50%); }
.node-2 { width: 12px; height: 12px; top: 50%; right: -6px; transform: translateY(-50%); }
.node-3 { width: 10px; height: 10px; bottom: -5px; left: 50%; transform: translateX(-50%); }

.core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  animation: pulse-core 3s ease-in-out infinite;
}

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

@keyframes pulse-core {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
  50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

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

.wheel {
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scroll-wheel 2s infinite;
}

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

/* ===== 通用区块 ===== */
.section {
  padding: 120px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
}

/* ===== 关于我们 ===== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.about-card {
  padding: 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.about-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 212, 255, 0.08);
}

.about-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 24px;
}

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

.about-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* ===== 核心业务 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  padding: 36px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(168, 85, 247, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.service-icon svg {
  width: 32px;
  height: 32px;
}

.service-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.service-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: var(--transition);
}

.service-link:hover {
  color: var(--color-secondary);
}

/* ===== 核心产品 ===== */
.products {
  background: linear-gradient(180deg, transparent 0%, rgba(168, 85, 247, 0.02) 50%, transparent 100%);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  position: relative;
  padding: 36px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  transition: var(--transition);
  overflow: hidden;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.product-card:hover {
  transform: translateY(-10px);
  border-color: rgba(0, 212, 255, 0.35);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4), 0 0 60px rgba(0, 212, 255, 0.08);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
}

.product-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.product-icon svg {
  width: 32px;
  height: 32px;
}

.product-badge {
  padding: 6px 14px;
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-secondary);
}

.product-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.product-desc {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  flex: 1;
}

.product-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--color-text);
  opacity: 0.85;
  line-height: 1.5;
}

.feature-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-primary);
  margin-top: 7px;
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

.product-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.product-tech span {
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.product-card h3 a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.product-card h3 a:hover {
  color: var(--color-primary);
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}

.product-link:hover {
  color: var(--color-secondary);
  gap: 10px;
}

/* ===== 技术能力 ===== */
.tech {
  background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.02) 50%, transparent 100%);
}

.tech-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.tech-content .section-header {
  text-align: left;
  margin: 0 0 40px 0;
  max-width: 100%;
}

.tech-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tech-item {
  display: flex;
  gap: 16px;
  padding: 20px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: var(--transition);
}

.tech-item:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.tech-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient-primary);
  margin-top: 6px;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
}

.tech-item h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.tech-item p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.tech-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.tech-hex-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.hex {
  width: 110px;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  transition: var(--transition);
}

.hex.active {
  color: white;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(168, 85, 247, 0.2) 100%);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
}

.hex:hover {
  transform: scale(1.08);
  color: white;
  border-color: var(--color-primary);
}

/* ===== 解决方案 ===== */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition);
}

.solution-card:hover {
  transform: translateY(-8px);
  border-color: rgba(168, 85, 247, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.solution-image {
  height: 220px;
  position: relative;
  background-size: cover;
  background-position: center;
}

.solution-1 { background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%); }
.solution-2 { background: linear-gradient(135deg, #8b5cf6 0%, #d946ef 100%); }
.solution-3 { background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%); }
.solution-4 { background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%); }

.solution-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, rgba(5, 5, 8, 0.9) 100%);
}

.solution-tag {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

.solution-body {
  padding: 28px;
}

.solution-body h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.solution-body p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ===== 服务流程 ===== */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0.3;
  z-index: 0;
}

.process-step {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: var(--transition);
}

.process-step:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 212, 255, 0.3);
}

.process-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin: 0 auto 20px;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.process-step h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.process-step p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ===== CTA ===== */
.cta-card {
  position: relative;
  padding: 80px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 32px;
  overflow: hidden;
  text-align: center;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
}

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

.cta-decoration {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.cta-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 255, 0.1);
}

.cta-circle:nth-child(1) {
  width: 300px;
  height: 300px;
  top: -100px;
  right: -100px;
}

.cta-circle:nth-child(2) {
  width: 400px;
  height: 400px;
  bottom: -150px;
  left: -150px;
}

.cta-circle:nth-child(3) {
  width: 200px;
  height: 200px;
  top: 50%;
  right: 10%;
  transform: translateY(-50%);
}

/* ===== 页脚 ===== */
.footer {
  padding: 80px 0 30px;
  border-top: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.3);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-desc {
  color: var(--color-text-muted);
  margin-top: 20px;
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 24px;
}

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

.footer-links a,
.footer-contact li {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer-bottom p {
  margin: 0;
}

.footer-icp {
  margin-top: 8px !important;
}

.footer-icp a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ===== 移动端菜单 ===== */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

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

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

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

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-stats {
    max-width: 600px;
    margin: 0 auto;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .tech-orbit {
    width: 300px;
    height: 300px;
  }
  
  .orbit-1 { width: 300px; height: 300px; }
  .orbit-2 { width: 220px; height: 220px; }
  .orbit-3 { width: 140px; height: 140px; }
  
  .about-grid,
  .services-grid,
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tech-wrapper {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .tech-content .section-header {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }
  
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-timeline::before {
    display: none;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background: rgba(5, 5, 8, 0.98);
    backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: var(--transition);
    padding: 40px 24px;
  }
  
  .nav.active {
    transform: translateX(0);
  }
  
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
  
  .nav-link {
    font-size: 1.25rem;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-grid,
  .services-grid,
  .products-grid,
  .solutions-grid,
  .process-timeline,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-card {
    padding: 48px 24px;
  }
  
  .tech-hex-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hex {
    width: 130px;
    height: 130px;
  }
}

/* ===== 滚动动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== 详情页通用样式 ===== */
.detail-hero {
  position: relative;
  padding: 160px 0 80px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

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

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

.breadcrumb .separator {
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--color-text);
}

.detail-hero-content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.detail-hero-text .hero-badge {
  margin-bottom: 20px;
}

.detail-hero-title {
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.detail-hero-desc {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

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

.detail-hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.detail-visual-card {
  width: 100%;
  max-width: 420px;
  padding: 40px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.detail-visual-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.detail-visual-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.detail-visual-icon svg {
  width: 40px;
  height: 40px;
}

.detail-visual-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.detail-visual-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.detail-visual-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.detail-visual-stat .stat-number {
  font-size: 1.75rem;
}

.detail-visual-stat .stat-label {
  font-size: 0.8125rem;
}

/* 详情页功能区 */
.feature-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-detail-card {
  padding: 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.feature-detail-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.feature-detail-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--color-primary);
  font-weight: 800;
  font-size: 1.125rem;
  margin-bottom: 20px;
}

.feature-detail-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* 详情页架构/流程区 */
.architecture-block {
  padding: 48px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  backdrop-filter: blur(10px);
}

.architecture-layers {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.arch-layer {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 28px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: var(--transition);
}

.arch-layer:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.04);
}

.arch-layer-label {
  flex-shrink: 0;
  width: 140px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
}

.arch-layer-content {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* 场景区 */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  padding: 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: var(--transition);
  text-align: center;
}

.scenario-card:hover {
  transform: translateY(-6px);
  border-color: rgba(168, 85, 247, 0.3);
}

.scenario-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  margin: 0 auto 20px;
}

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

.scenario-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* 详情页响应式 */
@media (max-width: 1024px) {
  .detail-hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .detail-hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .detail-hero-actions {
    justify-content: center;
  }
  
  .detail-hero-visual {
    order: -1;
  }
  
  .feature-detail-grid,
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .arch-layer {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .arch-layer-label {
    width: auto;
  }
}

@media (max-width: 768px) {
  .feature-detail-grid,
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  
  .architecture-block {
    padding: 32px 24px;
  }
  
  .detail-visual-card {
    padding: 28px;
  }
}