/* ============================================
   创硕网络 - 高科技AI营销系统官网
   设计系统 v1.0
   ============================================ */

:root {
  /* 主色调 - 深空科技 */
  --bg-primary: #060818;
  --bg-secondary: #0c1030;
  --bg-tertiary: #141a3a;
  --bg-card: rgba(20, 26, 58, 0.6);
  --bg-glass: rgba(255, 255, 255, 0.03);

  /* 强调色 */
  --cyan: #00d4ff;
  --cyan-glow: rgba(0, 212, 255, 0.4);
  --purple: #8b5cf6;
  --purple-glow: rgba(139, 92, 246, 0.4);
  --blue: #3b82f6;
  --pink: #ec4899;
  --green: #10b981;
  --orange: #f59e0b;

  /* 文字 */
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #6b7280;
  --text-gradient: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);

  /* 边框 */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 212, 255, 0.3);

  /* 阴影 */
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
  --gradient-dark: linear-gradient(180deg, #060818 0%, #0c1030 100%);
  --gradient-card: linear-gradient(135deg, rgba(0,212,255,0.05) 0%, rgba(139,92,246,0.05) 100%);
}

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

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

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section { padding: 100px 0; position: relative; z-index: 1; }
.section-sm { padding: 60px 0; }

/* ===== 排版 ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 100px;
  font-size: 13px;
  color: var(--cyan);
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

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

.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 60px;
  line-height: 1.8;
}

.text-center { text-align: center; }

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

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(6, 8, 24, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.nav-logo .logo-icon {
  width: 38px; height: 38px;
  background: var(--gradient-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 0 20px var(--cyan-glow);
}

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

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

.nav-menu > li > a {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: all 0.2s;
  font-weight: 500;
}

.nav-menu > li > a:hover {
  color: var(--cyan);
  background: rgba(0, 212, 255, 0.08);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: rgba(12, 16, 48, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s;
  box-shadow: var(--shadow-card);
}

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

.nav-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.15s;
}

.nav-dropdown-menu a:hover {
  background: rgba(0, 212, 255, 0.08);
  color: var(--cyan);
}

.nav-dropdown-menu a .dd-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--gradient-primary);
  color: #fff !important;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 0 20px var(--cyan-glow);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px var(--cyan-glow);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

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

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  pointer-events: none;
}

.hero-bg-orb.orb1 { top: 10%; left: -10%; width: 500px; height: 500px; background: var(--purple); animation: floatOrb 8s ease-in-out infinite; }
.hero-bg-orb.orb2 { bottom: 10%; right: -10%; width: 400px; height: 400px; background: var(--cyan); animation: floatOrb 10s ease-in-out infinite reverse; }

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(40px, -30px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 100px;
  font-size: 13px;
  color: var(--cyan);
  font-weight: 500;
  margin-bottom: 28px;
  animation: fadeInUp 0.6s ease;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
  animation: fadeInUp 0.7s ease;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-desc {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.8;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.9s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-primary);
  color: #fff;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 0 25px var(--cyan-glow);
  cursor: pointer;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--cyan-glow);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s;
  cursor: pointer;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 80px;
  animation: fadeInUp 1s ease;
}

.hero-stat .num {
  font-size: 36px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat .label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== 卡片 ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

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

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

.card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
}

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

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

/* ===== 服务网格 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

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

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.12);
}

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

.service-card .sc-num {
  position: absolute;
  top: 24px; right: 28px;
  font-size: 48px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.04);
  line-height: 1;
}

.service-card .sc-icon {
  width: 60px; height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 24px;
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
}

.service-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-card .sc-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.service-card .sc-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.service-card .sc-features span {
  font-size: 12px;
  padding: 4px 12px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 100px;
  color: var(--cyan);
}

.service-card .sc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--cyan);
  font-weight: 500;
  transition: gap 0.2s;
}

.service-card .sc-link:hover { gap: 12px; }

/* ===== 优势区 ===== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.advantage-item {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all 0.3s;
  backdrop-filter: blur(10px);
}

.advantage-item:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.advantage-item .ai-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
}

.advantage-item h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.advantage-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== 案例 ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
  backdrop-filter: blur(10px);
}

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

.case-card .case-img {
  width: 100%;
  height: 200px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  position: relative;
  overflow: hidden;
}

.case-card .case-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(139,92,246,0.1));
}

.case-card .case-body { padding: 24px; }

.case-card .case-tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 10px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 100px;
  color: var(--cyan);
  margin-bottom: 12px;
}

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

.case-card .case-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-card .case-stats {
  display: flex;
  gap: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.case-card .case-stat .num {
  font-size: 22px;
  font-weight: 800;
  color: var(--cyan);
}

.case-card .case-stat .label {
  font-size: 11px;
  color: var(--text-muted);
}

/* ===== 文章列表 ===== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.article-card .article-img {
  width: 100%;
  height: 180px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}

.article-card .article-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

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

.article-card .article-meta .tag {
  padding: 2px 10px;
  background: rgba(139, 92, 246, 0.1);
  border-radius: 100px;
  color: var(--purple);
}

.article-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-card .article-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.article-card .article-link {
  margin-top: 16px;
  font-size: 13px;
  color: var(--cyan);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}

.cta-box {
  background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(139,92,246,0.08) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(0,212,255,0.05) 0%, transparent 50%);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.cta-box h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}

.cta-box p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  position: relative;
}

.cta-box .hero-buttons { justify-content: center; position: relative; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 32px;
  position: relative;
  z-index: 1;
}

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

.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.8; max-width: 320px; }

.footer-col h5 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--cyan); }

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-qr {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
}

.footer-qr img {
  width: 100px; height: 100px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 浮动联系栏 ===== */
.float-contact {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: visible;
}

.float-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
}

.float-btn:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: scale(1.1);
  box-shadow: 0 0 25px var(--cyan-glow);
}

.float-btn .tooltip {
  position: absolute;
  right: 62px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
  pointer-events: none;
}

.float-btn:hover .tooltip { opacity: 1; visibility: visible; }

/* QR 弹窗 — 向上弹出，右对齐带箭头 */
.qr-popup {
  position: absolute;
  bottom: calc(100% + 14px);
  right: 0;
  width: 196px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 18px 18px 16px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  pointer-events: none;
  z-index: 10000;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 212, 255, 0.08);
}

/* 小箭头指向按钮 */
.qr-popup::after {
  content: '';
  position: absolute;
  bottom: -7px;
  right: 18px;
  width: 12px; height: 12px;
  background: var(--bg-tertiary);
  border-right: 1px solid var(--border-glow);
  border-bottom: 1px solid var(--border-glow);
  transform: rotate(45deg);
}

.float-btn:hover .qr-popup {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.qr-popup img {
  width: 160px; height: 160px;
  border-radius: 8px;
  display: block;
  margin: 0 auto;
  border: 1px solid var(--border-subtle);
}

.qr-popup .qr-title {
  font-size: 14px;
  color: var(--text-primary);
  margin-top: 12px;
  font-weight: 600;
}

.qr-popup .qr-phone {
  font-size: 13px;
  color: var(--cyan);
  margin-top: 4px;
  font-weight: 600;
}

/* ===== 页面通用 Hero ===== */
.page-hero {
  padding: 160px 0 80px;
  position: relative;
  overflow: hidden;
}

.page-hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.page-hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

/* ===== 业务详情页 ===== */
.service-detail {
  padding: 80px 0;
}

.detail-hero-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 80px;
}

.detail-hero-text h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.detail-hero-text p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 24px;
}

.detail-hero-visual {
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  position: relative;
  overflow: hidden;
}

.detail-hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.08), rgba(139,92,246,0.08));
}

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

.process-timeline {
  position: relative;
  padding-left: 40px;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 15px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--purple));
  opacity: 0.3;
}

.process-step {
  position: relative;
  padding-bottom: 40px;
}

.process-step::before {
  content: '';
  position: absolute;
  left: -32px; top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--gradient-primary);
  box-shadow: 0 0 15px var(--cyan-glow);
}

.process-step h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 后台管理 ===== */
.admin-body {
  background: var(--bg-primary);
}

.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-subtle);
  padding: 24px 0;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.admin-sidebar .admin-logo {
  padding: 0 24px 24px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 16px;
  font-size: 18px;
  font-weight: 800;
}

.admin-menu { flex: 1; padding: 0 12px; }

.admin-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.2s;
  margin-bottom: 4px;
}

.admin-menu a:hover { background: rgba(0,212,255,0.08); color: var(--cyan); }
.admin-menu a.active { background: rgba(0,212,255,0.12); color: var(--cyan); border: 1px solid rgba(0,212,255,0.2); }

.admin-main {
  flex: 1;
  margin-left: 240px;
  padding: 24px 32px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.admin-header h1 { font-size: 24px; font-weight: 700; }

.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th, .admin-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
}

.admin-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-table tr:hover { background: rgba(0,212,255,0.03); }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; font-weight: 500; }
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--cyan);
}
.form-textarea { min-height: 120px; resize: vertical; }

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
}

.stat-card .sc-label { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.stat-card .sc-value { font-size: 32px; font-weight: 800; }
.stat-card .sc-value.gradient { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-box {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  backdrop-filter: blur(20px);
}

.login-box h2 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.login-box .sub { font-size: 14px; color: var(--text-muted); margin-bottom: 32px; }

.btn-block { width: 100%; justify-content: center; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 100px; font-size: 12px; font-weight: 500; }
.badge-green { background: rgba(16,185,129,0.12); color: var(--green); }
.badge-orange { background: rgba(245,158,11,0.12); color: var(--orange); }
.badge-red { background: rgba(236,72,153,0.12); color: var(--pink); }

.action-btn {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  margin-right: 6px;
}
.action-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.action-btn.danger:hover { border-color: var(--pink); color: var(--pink); }

/* ===== 信任标识带 ===== */
.trust-band-section {
  padding: 32px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  z-index: 1;
}

.trust-band-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.trust-badges {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

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

.trust-badge .tb-icon {
  font-size: 22px;
}

.trust-badge .tb-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.trust-divider {
  width: 1px;
  height: 28px;
  background: var(--border-subtle);
}

.trust-industries {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1;
}

.ti-label {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}

.ti-tag {
  font-size: 12px;
  padding: 3px 12px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.12);
  border-radius: 100px;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.ti-tag:hover {
  background: rgba(0, 212, 255, 0.12);
  color: var(--cyan);
  border-color: rgba(0, 212, 255, 0.25);
}

.ti-tag-highlight {
  font-size: 13px;
  font-weight: 700;
  padding: 4px 16px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
}

/* ===== AI大模型生态 ===== */
.ai-model-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (max-width: 1200px) {
  .ai-model-grid { grid-template-columns: repeat(3, 1fr); }
}

.ai-model-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 0.3s;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  min-height: 130px;
}

.ai-model-card .am-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ai-model-card .am-footer {
  display: flex;
  align-items: center;
  padding-top: 10px;
  border-top: 1px dashed rgba(0, 212, 255, 0.1);
}

.ai-model-card .am-desc {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.ai-model-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 30%, rgba(0, 212, 255, 0.3), transparent 70%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.ai-model-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.1);
}

.ai-model-card:hover::before { opacity: 1; }

.ai-model-card .am-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.ai-model-card:hover .am-icon {
  transform: scale(1.15);
}

.ai-model-card .am-info {
  flex: 1;
  min-width: 0;
}

.ai-model-card .am-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ai-model-card .am-vendor {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.3;
}

.ai-model-card .am-desc {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

/* ===== 服务流程 ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-card {
  position: relative;
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.3s;
  backdrop-filter: blur(10px);
  overflow: visible;
}

.process-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(0, 212, 255, 0.3), transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.process-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.12);
}

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

.process-card .pc-step {
  position: absolute;
  top: 16px; right: 20px;
  font-size: 40px;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.15;
  line-height: 1;
}

.process-card .pc-icon {
  font-size: 40px;
  margin-bottom: 20px;
  display: inline-block;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.process-card:hover .pc-icon {
  transform: scale(1.2) translateY(-4px);
}

.process-card h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.process-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.process-card .pc-arrow {
  position: absolute;
  top: 50%;
  right: -20px;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--cyan);
  opacity: 0.4;
  z-index: 2;
}

/* ===== 客户评价 ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.testimonial-card {
  position: relative;
  padding: 36px 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all 0.3s;
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.testimonial-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 30%, rgba(139, 92, 246, 0.3), transparent 70%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.1);
}

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

.testimonial-card .tc-quote {
  position: absolute;
  top: 8px; right: 24px;
  font-size: 64px;
  font-weight: 900;
  color: rgba(0, 212, 255, 0.08);
  line-height: 1;
  font-family: Georgia, serif;
}

.testimonial-card .tc-content {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 24px;
  position: relative;
}

.testimonial-card .tc-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.testimonial-card .tc-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.testimonial-card .tc-person {
  flex: 1;
  min-width: 0;
}

.testimonial-card .tc-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.testimonial-card .tc-company {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.testimonial-card .tc-tag {
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 100px;
  color: var(--cyan);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all 0.3s;
  backdrop-filter: blur(10px);
}

.faq-item:hover {
  border-color: rgba(0, 212, 255, 0.2);
}

.faq-item.open {
  border-color: var(--border-glow);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.08);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}

.faq-q:hover {
  background: rgba(0, 212, 255, 0.03);
}

.faq-q-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  padding-right: 16px;
}

.faq-q-icon {
  font-size: 22px;
  color: var(--cyan);
  transition: transform 0.3s;
  flex-shrink: 0;
  line-height: 1;
}

.faq-item.open .faq-q-icon {
  transform: rotate(45deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 28px;
}

.faq-item.open .faq-a {
  max-height: 400px;
  padding: 0 28px 24px;
}

.faq-a p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .detail-hero-box { grid-template-columns: 1fr; }
  .detail-hero-visual { max-width: 360px; margin: 0 auto; }
  .admin-sidebar { transform: translateX(-100%); transition: transform 0.3s; }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-card .pc-arrow { display: none; }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .nav-menu.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--bg-secondary);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  }
  .nav-menu.show > li { width: 100%; }
  .nav-menu.show > li > a { display: block; padding: 12px 16px; }
  .nav-menu.show .nav-cta { justify-content: center; margin-top: 8px; }
  .nav-toggle { display: flex; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .section { padding: 60px 0; }
  .cta-box { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .services-grid { grid-template-columns: 1fr; }
  .float-contact { right: 12px; bottom: 12px; }
  .float-btn { width: 46px; height: 46px; font-size: 19px; }
  .qr-popup { width: 172px; padding: 14px; }
  .qr-popup img { width: 140px; height: 140px; }
  .qr-popup::after { right: 14px; }
  /* 新区块移动端适配 */
  .trust-band-inner { flex-direction: column; gap: 16px; align-items: flex-start; }
  .trust-divider { display: none; }
  .trust-badges { gap: 16px; }
  .process-grid { grid-template-columns: 1fr; }
  .process-card .pc-arrow { display: none; }
  .ai-model-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .faq-q { padding: 16px 20px; }
  .faq-q-text { font-size: 14px; }
  .faq-a { padding: 0 20px; }
  .faq-item.open .faq-a { padding: 0 20px 20px; }
}

/* 动画 */
.fade-in { animation: fadeInUp 0.6s ease; }

.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   动态科技感 — 卡片交互细节
   ============================================ */

/* 导航栏滚动渐变底线 */
.navbar.scrolled {
  border-bottom: 1px solid transparent;
  background: rgba(6, 8, 24, 0.9);
  box-shadow: 0 1px 0 0 rgba(0, 212, 255, 0.15), 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* 滚动揭示动画 */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* 交错延迟 */
.scroll-reveal:nth-child(1) { transition-delay: 0s; }
.scroll-reveal:nth-child(2) { transition-delay: 0.08s; }
.scroll-reveal:nth-child(3) { transition-delay: 0.16s; }
.scroll-reveal:nth-child(4) { transition-delay: 0.24s; }
.scroll-reveal:nth-child(5) { transition-delay: 0.32s; }
.scroll-reveal:nth-child(6) { transition-delay: 0.4s; }
.scroll-reveal:nth-child(7) { transition-delay: 0.48s; }
.scroll-reveal:nth-child(8) { transition-delay: 0.56s; }
.scroll-reveal:nth-child(9) { transition-delay: 0.64s; }

/* 分区渐变线 */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.3), rgba(139, 92, 246, 0.3), transparent);
  margin: 0;
}

/* Hero 标题渐变流光增强 */
.hero h1 .gradient-text {
  background-size: 200% 200%;
  animation: gradientShift 5s ease infinite;
}

/* 区块标签微光 */
.section-label {
  transition: box-shadow 0.4s;
}

.section-label:hover {
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
}

/* 卡片悬停发光边框 */
.service-card,
.case-card,
.article-card,
.advantage-item,
.card {
  position: relative;
  overflow: hidden;
}

.service-card::before,
.case-card::before,
.article-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 30%, rgba(0, 212, 255, 0.4), transparent 70%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 1;
}

.service-card:hover::before,
.case-card:hover::before,
.article-card:hover::before {
  opacity: 1;
}

/* 卡片悬停时顶部渐变线 */
.card::before,
.service-card::after {
  z-index: 2;
}

/* 优势卡片悬停光效 */
.advantage-item::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(139, 92, 246, 0.35), transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

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

/* 优势图标悬停旋转 */
.advantage-item .ai-icon {
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.advantage-item:hover .ai-icon {
  transform: rotateY(180deg);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.2);
}

/* 服务卡片图标悬停弹跳 */
.service-card .sc-icon,
.card .card-icon {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.service-card:hover .sc-icon,
.card:hover .card-icon {
  transform: scale(1.1) translateY(-4px);
}

/* 按钮光泽扫过 */
.btn-primary,
.nav-cta {
  position: relative;
  overflow: hidden;
}

.btn-primary::after,
.nav-cta::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  pointer-events: none;
  transition: none;
}

.btn-primary:hover::after,
.nav-cta:hover::after {
  animation: btnShine 0.8s ease;
}

@keyframes btnShine {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* CTA 区域微光流动 */
.cta-box {
  position: relative;
  overflow: hidden;
}

.cta-box::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, transparent, rgba(0, 212, 255, 0.03), transparent, rgba(139, 92, 246, 0.03), transparent);
  background-size: 200% 200%;
  animation: ctaShimmer 6s ease infinite;
  pointer-events: none;
}

@keyframes ctaShimmer {
  0%, 100% { background-position: 0% 0%; }
  50% { background-position: 100% 100%; }
}

/* 浮动按钮呼吸 */
.float-btn {
  animation: floatBtnBreath 3s ease-in-out infinite;
}

@keyframes floatBtnBreath {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0); }
  50% { box-shadow: 0 0 0 6px rgba(0, 212, 255, 0.06); }
}

/* 时间线节点脉冲 */
.process-step::before {
  animation: nodePulse 2.5s ease-in-out infinite;
}

@keyframes nodePulse {
  0%, 100% { box-shadow: 0 0 8px var(--cyan-glow); }
  50% { box-shadow: 0 0 18px var(--cyan-glow), 0 0 30px rgba(0, 212, 255, 0.15); }
}

/* 案例标签入场 */
.case-card .case-tag,
.article-card .article-meta .tag {
  transition: transform 0.3s;
}

.case-card:hover .case-tag,
.article-card:hover .article-meta .tag {
  transform: scale(1.05);
}

/* 链接箭头滑动 */
.service-card .sc-link,
.article-card .article-link {
  transition: gap 0.3s ease;
}

/* 详情页 visual 区域光泽 */
.detail-hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.04) 50%, transparent 60%);
  background-size: 200% 200%;
  animation: detailShine 4s ease-in-out infinite;
}

@keyframes detailShine {
  0%, 100% { background-position: 200% 200%; }
  50% { background-position: 0% 0%; }
}

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