/* ===== 变量与基础 ===== */
:root {
  --color-primary: #0ea5e9;
  --color-primary-dark: #0284c7;
  --color-primary-light: #38bdf8;
  --color-accent: #06b6d4;
  --color-teal: #14b8a6;
  --color-bg-dark: #0a1628;
  --color-bg-darker: #060d18;
  --color-bg-card: rgba(255, 255, 255, 0.03);
  --color-bg-card-hover: rgba(255, 255, 255, 0.06);
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: rgba(255, 255, 255, 0.08);
  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --header-height: 72px;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-glow: 0 0 40px rgba(14, 165, 233, 0.15);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(14, 165, 233, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-light);
  border: 1.5px solid rgba(14, 165, 233, 0.5);
}

.btn-outline:hover {
  background: rgba(14, 165, 233, 0.1);
  border-color: var(--color-primary);
}

.btn-block {
  width: 100%;
}

/* ===== 导航栏 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(6, 13, 24, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(6, 13, 24, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
}

.logo-icon {
  font-size: 28px;
}

.logo-text {
  background: linear-gradient(135deg, #fff, var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-text-muted);
  border-radius: 8px;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent)) !important;
  color: #fff !important;
  margin-left: 8px;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
}

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

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 40px) 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(14, 165, 233, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(6, 182, 212, 0.12), transparent),
    radial-gradient(ellipse 50% 30% at 20% 80%, rgba(20, 184, 166, 0.08), transparent),
    linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
}

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

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-primary-light);
  border-radius: 50%;
  opacity: 0.4;
  animation: float 8s infinite ease-in-out;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0.2; }
  50% { transform: translateY(-30px) translateX(10px); opacity: 0.6; }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(14, 165, 233, 0.15);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-primary-light);
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-title-main {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 700;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title-sub {
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 400;
  color: var(--color-text-muted);
}

.hero-desc {
  font-size: 17px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary-light);
}

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

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted);
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
  margin-top: -4px;
}

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

/* ===== 通用 Section ===== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(14, 165, 233, 0.12);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-primary-light);
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== 品牌中心 ===== */
.about {
  background: linear-gradient(180deg, var(--color-bg-darker) 0%, var(--color-bg-dark) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.about-card {
  padding: 36px 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.about-card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(14, 165, 233, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.about-icon {
  font-size: 40px;
  margin-bottom: 20px;
}

.about-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: #fff;
}

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

.about-features {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.feature-check {
  color: var(--color-teal);
  font-weight: 700;
}

/* ===== 健康服务 ===== */
.services {
  background: var(--color-bg-dark);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.service-card {
  padding: 28px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-teal));
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  border-color: rgba(14, 165, 233, 0.25);
  transform: translateY(-3px);
}

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

.service-num {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: 0.1em;
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: #fff;
}

.service-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.services-highlight {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.highlight-card {
  padding: 40px 36px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.08), rgba(6, 182, 212, 0.05));
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-lg);
}

.highlight-card h3 {
  font-size: 22px;
  margin-bottom: 16px;
  color: #fff;
}

.highlight-card p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

/* ===== AI 科技 ===== */
.ai-tech {
  background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
}

.ai-showcase {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

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

.ai-visual {
  position: relative;
  width: 320px;
  height: 320px;
  margin: 0 auto;
}

.ai-ring {
  position: absolute;
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: 50%;
  animation: spin 20s linear infinite;
}

.ai-ring-1 {
  inset: 0;
}

.ai-ring-2 {
  inset: 30px;
  animation-direction: reverse;
  animation-duration: 15s;
  border-color: rgba(6, 182, 212, 0.25);
}

.ai-ring-3 {
  inset: 60px;
  animation-duration: 25s;
  border-color: rgba(20, 184, 166, 0.2);
}

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

.ai-core {
  position: absolute;
  inset: 90px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 60px rgba(14, 165, 233, 0.4);
}

.ai-core span {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
}

.ai-core small {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
}

.ai-info h3 {
  font-size: 26px;
  margin-bottom: 16px;
  color: #fff;
}

.ai-info p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

.ai-list {
  list-style: none;
}

.ai-list li {
  padding: 10px 0;
  padding-left: 24px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-muted);
}

.ai-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.ai-agents-title {
  text-align: center;
  font-size: 22px;
  margin-bottom: 32px;
  color: #fff;
}

.agents-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.agent-card {
  padding: 28px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
  transition: var(--transition);
}

.agent-card:hover {
  border-color: rgba(14, 165, 233, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.agent-card.featured {
  text-align: left;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.05));
  border-color: rgba(14, 165, 233, 0.25);
}

.agent-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.agent-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #fff;
}

.agent-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.ai-agent-extra {
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 案例 ===== */
.cases {
  background: var(--color-bg-dark);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.case-card {
  padding: 32px 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.case-card:hover {
  border-color: rgba(14, 165, 233, 0.2);
  transform: translateY(-4px);
}

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(20, 184, 166, 0.15);
  color: var(--color-teal);
  font-size: 12px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.case-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: #fff;
}

.case-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.case-metrics {
  display: flex;
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-label {
  font-size: 11px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary-light);
}

.cases-note {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ===== 商学院 ===== */
.academy {
  background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
}

.academy-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.academy-courses {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.course-item:hover {
  border-color: rgba(14, 165, 233, 0.2);
  background: var(--color-bg-card-hover);
}

.course-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.course-item h4 {
  font-size: 16px;
  margin-bottom: 4px;
  color: #fff;
}

.course-item p {
  font-size: 13px;
  color: var(--color-text-muted);
}

.academy-card {
  padding: 40px 36px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.05));
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: var(--radius-lg);
  height: 100%;
}

.academy-card h3 {
  font-size: 22px;
  margin-bottom: 16px;
  color: #fff;
}

.academy-card p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

.academy-card ul {
  list-style: none;
}

.academy-card li {
  padding: 8px 0;
  padding-left: 20px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-muted);
}

.academy-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-teal);
  font-weight: 700;
}

/* ===== 合作赋能 ===== */
.partnership {
  background: var(--color-bg-dark);
}

.partnership-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.partner-card {
  padding: 32px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
}

.partner-card:hover {
  border-color: rgba(14, 165, 233, 0.25);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.partner-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.partner-card h3 {
  font-size: 16px;
  margin-bottom: 12px;
  color: #fff;
}

.partner-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.partnership-flow {
  padding: 48px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.partnership-flow h3 {
  font-size: 20px;
  margin-bottom: 32px;
  color: #fff;
}

.flow-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  background: rgba(14, 165, 233, 0.08);
  border-radius: var(--radius);
  min-width: 120px;
}

.flow-num {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

.flow-step span:last-child {
  font-size: 13px;
  color: var(--color-text-muted);
}

.flow-arrow {
  color: var(--color-primary);
  font-size: 20px;
  font-weight: 300;
}

/* ===== 联系我们 ===== */
.contact {
  background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 16px;
  margin-bottom: 4px;
  color: #fff;
}

.contact-item p {
  font-size: 14px;
  color: var(--color-text-muted);
}

.contact-form {
  padding: 40px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: #fff;
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(148, 163, 184, 0.6);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

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

/* ===== 页脚 ===== */
.footer {
  padding: 60px 0 32px;
  background: var(--color-bg-darker);
  border-top: 1px solid var(--color-border);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-brand .logo-icon {
  font-size: 32px;
}

.footer-brand .logo-text {
  font-size: 20px;
  font-weight: 600;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 14px;
  margin-bottom: 16px;
  color: #fff;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  padding: 6px 0;
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

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

.footer-beian {
  margin-top: 8px;
}

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

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

.footer-compliance {
  margin-top: 8px;
  font-size: 12px !important;
  opacity: 0.7;
}

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

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .about-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }

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

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

  .ai-main,
  .academy-content,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .services-highlight {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(6, 13, 24, 0.98);
    padding: 24px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-bottom: 1px solid var(--color-border);
  }

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

  .nav-toggle {
    display: flex;
  }

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

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

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

  .section {
    padding: 60px 0;
  }

  .services-grid,
  .agents-grid,
  .partnership-grid {
    grid-template-columns: 1fr;
  }

  .flow-steps {
    flex-direction: column;
  }

  .flow-arrow {
    transform: rotate(90deg);
  }

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

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