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

:root {
  /* 主色调 - 专业金融科技风格 */
  --primary-color: #1a1a2e;
  --secondary-color: #16213e;
  --accent-color: #f0a500;
  --accent-hover: #d4940a;
  --text-primary: #ffffff;
  --text-secondary: #b8b8d4;
  --text-muted: #7a7a9a;
  --bg-dark: #0f0f1a;
  --bg-card: #1e1e35;
  --bg-hover: #2a2a45;
  --border-color: #2d2d4a;
  --success: #00d97e;
  --danger: #ff4757;
  --gradient-primary: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  --gradient-accent: linear-gradient(135deg, #f0a500 0%, #d4940a 100%);
  --gradient-glow: linear-gradient(135deg, rgba(240, 165, 0, 0.3) 0%, rgba(26, 26, 46, 0) 70%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 0 30px rgba(240, 165, 0, 0.3);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  transition: var(--transition);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 导航栏 ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

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

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.nav-brand-logo {
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--bg-dark);
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

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

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

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--bg-dark);
}

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

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

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--accent-color);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.05rem;
}

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

.btn-outline:hover {
  background: var(--accent-color);
  color: var(--bg-dark);
  transform: translateY(-2px);
}

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

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

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

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(240, 165, 0, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(22, 33, 62, 0.8) 0%, transparent 70%);
  border-radius: 50%;
}

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

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  animation: fadeInLeft 1s ease-out;
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(240, 165, 0, 0.15);
  border: 1px solid rgba(240, 165, 0, 0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-color);
  margin-bottom: 24px;
}

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

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #ffffff 0%, #f0a500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

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

.hero-stat-item {
  text-align: center;
}

.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-visual {
  animation: fadeInRight 1s ease-out;
}

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

.hero-mockup {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.hero-mockup-header {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.mockup-dot.red { background: #ff5f56; }
.mockup-dot.yellow { background: #ffbd2e; }
.mockup-dot.green { background: #27c93f; }

.hero-mockup-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mockup-chart {
  height: 180px;
  background: linear-gradient(180deg, rgba(240, 165, 0, 0.2) 0%, transparent 100%);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.mockup-chart::before {
  content: '';
  position: absolute;
  bottom: 20%;
  left: 0;
  right: 0;
  height: 60%;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 120'%3E%3Cpath d='M0,80 Q50,60 100,70 T200,40 T300,50 T400,20 L400,120 L0,120 Z' fill='%23f0a500' opacity='0.6'/%3E%3Cpath d='M0,80 Q50,60 100,70 T200,40 T300,50 T400,20' stroke='%23f0a500' stroke-width='2' fill='none'/%3E%3C/svg%3E") no-repeat center bottom;
  background-size: 100% 100%;
}

.mockup-data {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.mockup-card {
  background: var(--bg-hover);
  padding: 12px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.mockup-card-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.mockup-card-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--success);
}

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

.section-alt {
  background: var(--secondary-color);
}

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

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(240, 165, 0, 0.1);
  color: var(--accent-color);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== 核心特性区 ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  padding: 36px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-color);
  box-shadow: var(--shadow-md);
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  background: rgba(240, 165, 0, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== 服务介绍区 ========== */
.services-layout {
  display: grid;
  gap: 60px;
}

.service-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.service-row.reverse {
  direction: rtl;
}

.service-row.reverse > * {
  direction: ltr;
}

.service-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.service-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  transition: var(--transition);
}

.service-image:hover img {
  transform: scale(1.05);
}

.service-content h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.service-content p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.service-list li::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: rgba(0, 217, 126, 0.15);
  color: var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ========== 数据统计区 ========== */
.stats-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent-color);
  margin-bottom: 8px;
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ========== 产品卡片 ========== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

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

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-color);
  box-shadow: var(--shadow-md);
}

.product-image {
  height: 200px;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-card:hover .product-image img {
  transform: scale(1.08);
}

.product-info {
  padding: 24px;
}

.product-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(240, 165, 0, 0.15);
  color: var(--accent-color);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 12px;
}

.product-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.product-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.product-price {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.product-price-now {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-color);
}

.product-change {
  font-size: 0.9rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
}

.product-change.up {
  background: rgba(0, 217, 126, 0.15);
  color: var(--success);
}

.product-change.down {
  background: rgba(255, 71, 87, 0.15);
  color: var(--danger);
}

/* ========== 新闻列表 ========== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

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

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-color);
}

.news-image {
  height: 220px;
  overflow: hidden;
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.news-card:hover .news-image img {
  transform: scale(1.06);
}

.news-body {
  padding: 24px;
}

.news-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.news-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  line-height: 1.4;
  transition: var(--transition);
}

.news-card:hover .news-body h3 {
  color: var(--accent-color);
}

.news-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.news-read-more {
  color: var(--accent-color);
  font-weight: 500;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-read-more:hover {
  gap: 10px;
}

/* ========== FAQ区域 ========== */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--accent-color);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 28px;
  background: transparent;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
}

.faq-question:hover {
  color: var(--accent-color);
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--accent-color);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 28px;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 28px 24px;
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========== CTA区域 ========== */
.cta {
  background: linear-gradient(135deg, var(--primary-color) 0%, #2d1810 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(240, 165, 0, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #f0a500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ========== 页脚 ========== */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-color);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 16px;
  font-size: 0.95rem;
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

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

.footer-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-color);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.footer-legal a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-legal a:hover {
  color: var(--accent-color);
}

/* ========== 联系页面样式 ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  margin-bottom: 20px;
  transition: var(--transition);
}

.contact-info-card:hover {
  border-color: var(--accent-color);
  transform: translateX(4px);
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: rgba(240, 165, 0, 0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.contact-info-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.contact-info-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

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

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: var(--transition);
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(240, 165, 0, 0.15);
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

/* ========== 新闻详情页样式 ========== */
.news-detail {
  padding-top: 120px;
  padding-bottom: 80px;
}

.news-detail-header {
  text-align: center;
  margin-bottom: 48px;
}

.news-detail-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.news-detail-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 24px;
}

.news-detail-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
}

.news-detail-cover img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.news-detail-body {
  max-width: 800px;
  margin: 0 auto;
}

.news-detail-body p {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.news-detail-body h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--text-primary);
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
  padding: 120px 0 0;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.breadcrumb-list .separator {
  color: var(--text-muted);
}

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

/* ========== 页面Banner ========== */
.page-banner {
  padding: 120px 0 80px;
  text-align: center;
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(240, 165, 0, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #f0a500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}

.page-banner p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

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

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

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--gradient-accent);
  color: var(--bg-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.6rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .hero-visual {
    max-width: 500px;
    margin: 0 auto;
  }
  
  .service-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .service-row.reverse {
    direction: ltr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .nav-links,
  .nav-actions {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
  }
  
  .hero {
    padding: 100px 0 60px;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .section {
    padding: 72px 0;
  }
  
  .section-title {
    font-size: 1.7rem;
  }
  
  .cta h2 {
    font-size: 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  
  .stat-item h3 {
    font-size: 2.2rem;
  }
  
  .news-detail-cover img {
    height: 260px;
  }
  
  .news-detail-title {
    font-size: 1.8rem;
  }
  
  .page-banner h1 {
    font-size: 2.2rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .cta-actions {
    flex-direction: column;
  }
  
  .cta-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .section-desc {
    font-size: 0.95rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }
  
  .product-image,
  .news-image {
    height: 180px;
  }
  
  .service-image img {
    height: 240px;
  }
  
  .nav-brand {
    font-size: 0.95rem;
  }
  
  .nav-brand-logo {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
}