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

:root {
  --primary-color: #F0B90B;
  --primary-dark: #D49B0A;
  --secondary-color: #1E2026;
  --bg-dark: #0B0E11;
  --bg-card: #1E2329;
  --bg-hover: #2B3139;
  --text-primary: #EAECEF;
  --text-secondary: #848E9C;
  --text-muted: #5E6673;
  --success-color: #0ECB81;
  --danger-color: #F6465D;
  --border-color: #2B3139;
  --gradient-primary: linear-gradient(135deg, #F0B90B 0%, #FCD535 100%);
  --gradient-dark: linear-gradient(180deg, #1E2026 0%, #0B0E11 100%);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 32px rgba(240, 185, 11, 0.15);
  --transition: all 0.3s ease;
  --radius: 12px;
}

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: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ====== 导航栏 ====== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 14, 17, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-brand-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: var(--bg-dark);
  font-size: 1.2rem;
}

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

.nav-menu a {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary-color);
  background: rgba(240, 185, 11, 0.1);
}

.nav-toggle {
  display: none;
  background: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: 8px;
}

.nav-cta {
  display: flex;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(240, 185, 11, 0.4);
  color: var(--bg-dark);
}

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

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--bg-dark);
}

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

/* ====== Hero 区域 ====== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at top, rgba(240, 185, 11, 0.1) 0%, transparent 60%),
              linear-gradient(180deg, #0B0E11 0%, #1E2026 50%, #0B0E11 100%);
  padding-top: 70px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23F0B90B' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(240, 185, 11, 0.15);
  border: 1px solid rgba(240, 185, 11, 0.3);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary-color);
  margin-bottom: 24px;
}

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

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #FFFFFF 0%, var(--primary-color) 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;
  line-height: 1.8;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

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

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

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

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

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.hero-card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.hero-card-badge {
  background: var(--success-color);
  color: #fff;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.trend-chart {
  height: 180px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 100%;
  padding-bottom: 20px;
}

.chart-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--primary-color) 0%, rgba(240, 185, 11, 0.2) 100%);
  border-radius: 2px 2px 0 0;
  animation: growUp 1.5s ease-out forwards;
  min-height: 20px;
}

.chart-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-card-crypto {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.crypto-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-hover);
  border-radius: 8px;
}

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

.crypto-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  color: #fff;
}

.crypto-icon.btc { background: linear-gradient(135deg, #F7931A 0%, #E2750A 100%); }
.crypto-icon.eth { background: linear-gradient(135deg, #627EEA 0%, #4A68D4 100%); }
.crypto-icon.bnb { background: linear-gradient(135deg, #F0B90B 0%, #D49B0A 100%); }

.crypto-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.crypto-change {
  font-size: 0.8rem;
  color: var(--success-color);
}

.crypto-change.negative {
  color: var(--danger-color);
}

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

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

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  background: rgba(240, 185, 11, 0.1);
  color: var(--primary-color);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

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

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px;
  transition: var(--transition);
  cursor: pointer;
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  background: rgba(240, 185, 11, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.8rem;
}

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

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

/* ====== 服务介绍 ====== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

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

.service-image {
  position: relative;
  min-height: 280px;
  overflow: hidden;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.service-content {
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.service-content h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.service-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.service-features li::before {
  content: '✓';
  width: 20px;
  height: 20px;
  background: rgba(14, 203, 129, 0.15);
  color: var(--success-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ====== 详细内容区 ====== */
.detail-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.detail-section.reverse {
  direction: rtl;
}

.detail-section.reverse > * {
  direction: ltr;
}

.detail-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.detail-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.detail-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.detail-feature-item {
  padding: 20px;
  background: var(--bg-card);
  border-radius: 10px;
  border-left: 3px solid var(--primary-color);
}

.detail-feature-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.detail-feature-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.detail-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

.detail-image-overlay {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  padding: 16px 20px;
  border-radius: 10px;
}

.detail-image-overlay-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.detail-image-overlay-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ====== 下载APP区域 ====== */
.app-download {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary-color) 50%, var(--bg-dark) 100%);
  padding: 80px 0;
}

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

.app-download-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.app-download-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.app-download-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.app-store-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 14px 24px;
  border-radius: 12px;
  color: var(--text-primary);
  transition: var(--transition);
}

.app-store-btn:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.app-store-btn-icon {
  font-size: 1.8rem;
}

.app-store-btn-text {
  text-align: left;
}

.app-store-btn-small {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.app-store-btn-large {
  font-size: 1rem;
  font-weight: 600;
}

.app-download-preview {
  display: flex;
  justify-content: center;
}

.app-mockup {
  width: 280px;
  height: 560px;
  background: var(--bg-card);
  border: 10px solid #2B3139;
  border-radius: 36px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.app-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 24px;
  background: #2B3139;
  border-radius: 0 0 12px 12px;
  z-index: 10;
}

.app-screen {
  padding: 40px 20px 20px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.app-screen-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}

.app-screen-logo {
  color: var(--primary-color);
  font-weight: 700;
  font-size: 1.1rem;
}

.app-screen-balance {
  background: var(--gradient-primary);
  color: var(--bg-dark);
  padding: 20px;
  border-radius: 16px;
  text-align: center;
  margin-bottom: 20px;
}

.app-screen-balance-label {
  font-size: 0.75rem;
  opacity: 0.8;
}

.app-screen-balance-value {
  font-size: 1.8rem;
  font-weight: 800;
  margin: 4px 0;
}

.app-screen-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.app-screen-action {
  text-align: center;
}

.app-screen-action-icon {
  width: 40px;
  height: 40px;
  background: var(--bg-hover);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 6px;
  font-size: 1.1rem;
}

.app-screen-action-text {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

/* ====== CTA 行动号召 ====== */
.cta {
  background: linear-gradient(135deg, #F0B90B 0%, #FCD535 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: rotate 20s linear infinite;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--bg-dark);
  margin-bottom: 16px;
}

.cta p {
  font-size: 1.1rem;
  color: rgba(11, 14, 17, 0.8);
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta .btn-primary:hover {
  background: #1a1d22;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* ====== FAQ 常见问题 ====== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(240, 185, 11, 0.3);
}

.faq-question {
  width: 100%;
  padding: 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
}

.faq-question-icon {
  width: 24px;
  height: 24px;
  background: var(--primary-color);
  color: var(--bg-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 24px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

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

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 16px;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary-color);
  color: var(--bg-dark);
}

.footer h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

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

.footer ul a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ====== 内页通用样式 ====== */
.page-header {
  padding: 160px 0 80px;
  text-align: center;
  background: linear-gradient(180deg, rgba(240, 185, 11, 0.05) 0%, var(--bg-dark) 100%);
  position: relative;
}

.page-header h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #FFFFFF 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

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

/* ====== 新闻列表页 ====== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

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

.news-card-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.news-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--primary-color);
  color: var(--bg-dark);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.news-card-content {
  padding: 24px;
}

.news-card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.news-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.news-pagination a {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.news-pagination a:hover,
.news-pagination a.active {
  background: var(--primary-color);
  color: var(--bg-dark);
  border-color: var(--primary-color);
}

/* ====== 新闻详情页 ====== */
.news-detail {
  padding: 60px 0 100px;
}

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

.news-detail-header {
  margin-bottom: 40px;
}

.news-detail-meta {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.news-detail-image {
  margin-bottom: 40px;
  border-radius: var(--radius);
  overflow: hidden;
}

.news-detail-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-secondary);
}

.news-detail-content p {
  margin-bottom: 20px;
}

.news-detail-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 36px 0 20px;
  color: var(--text-primary);
}

.news-detail-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 28px 0 16px;
  color: var(--text-primary);
}

.news-detail-content ul {
  padding-left: 20px;
  margin-bottom: 20px;
}

.news-detail-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}

.news-detail-content blockquote {
  background: var(--bg-card);
  border-left: 4px solid var(--primary-color);
  padding: 20px 24px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
  font-style: italic;
}

/* ====== 产品页 ====== */
.products-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.product-tab {
  padding: 12px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.product-tab:hover,
.product-tab.active {
  background: var(--gradient-primary);
  color: var(--bg-dark);
  border-color: transparent;
}

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

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

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-color);
}

.product-card-icon {
  width: 60px;
  height: 60px;
  background: rgba(240, 185, 11, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
}

.product-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.product-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.product-tab-content {
  display: none;
}

.product-tab-content.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

/* ====== 联系我们 ====== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

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

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

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

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-hover);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  gap: 20px;
  transition: var(--transition);
}

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

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: rgba(240, 185, 11, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.contact-info-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ====== 动画 ====== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes growUp {
  from {
    transform: scaleY(0);
    transform-origin: bottom;
  }
  to {
    transform: scaleY(1);
    transform-origin: bottom;
  }
}

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

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.5rem; }
  .section-title { font-size: 2rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { grid-template-columns: 1fr; }
  .service-image { min-height: 220px; }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-section { grid-template-columns: 1fr; gap: 40px; }
  .app-download-grid { grid-template-columns: 1fr; text-align: center; }
  .app-download-content { order: 2; }
  .app-download-preview { order: 1; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 4px;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    padding: 12px 16px;
    width: 100%;
  }

  .nav-toggle {
    display: block;
  }

  .nav-cta {
    display: none;
  }

  .hero-container { grid-template-columns: 1fr; gap: 40px; }
  .hero-content { text-align: center; }
  .hero-cta { justify-content: center; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { grid-template-columns: 1fr; gap: 16px; }

  .section { padding: 60px 0; }
  .section-title { font-size: 1.75rem; }

  .features-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .detail-features { grid-template-columns: 1fr; }
  .cta h2 { font-size: 1.8rem; }
  .page-header { padding: 140px 0 60px; }
  .page-header h1 { font-size: 2rem; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.75rem; }
  .section-title { font-size: 1.5rem; }
  .btn { padding: 10px 20px; font-size: 0.9rem; }
  .products-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .app-download-buttons { justify-content: center; }
}

/* ====== 子页面补充样式 ====== */

/* --- 面包屑子元素 --- */
.breadcrumb-separator {
  margin: 0 8px;
  color: var(--text-muted);
}

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

.page-header-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-top: 12px;
}

/* --- 产品页补充 --- */
.product-tab-icon {
  margin-right: 6px;
  font-size: 1.1rem;
}

.product-tab-panel {
  display: none;
  animation: fadeIn 0.5s ease;
}

.product-tab-panel.active {
  display: block;
}

.tab-panel-header {
  text-align: center;
  margin-bottom: 32px;
}

.tab-panel-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.tab-panel-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.product-card-features {
  text-align: left;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-card-features li {
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}

.product-card-features li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary-color);
}

/* --- about.html 公司统计 --- */
.company-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.company-stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.company-stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 6px;
}

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

/* --- about.html 时间线 --- */
.timeline {
  position: relative;
  padding-left: 40px;
  margin-top: 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--primary-color);
  border-radius: 50%;
  border: 3px solid var(--bg-dark);
}

.timeline-year {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 6px;
}

.timeline-content {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- about.html 团队 --- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

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

.team-avatar {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--bg-dark);
}

.team-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.team-info {
  font-size: 0.85rem;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.team-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 48px;
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
}

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

.team-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
}

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

/* --- about.html 愿景价值观 --- */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.vision-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.vision-card:hover {
  border-color: var(--primary-color);
}

.vision-icon {
  width: 56px;
  height: 56px;
  background: rgba(240, 185, 11, 0.1);
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.vision-card h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.vision-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- news.html 布局 --- */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 36px;
  align-items: start;
}

.news-main {
  min-width: 0;
}

.news-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
}

.sidebar-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.category-list, .hot-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.category-list a, .hot-list a {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 8px 0;
  transition: var(--transition);
}

.category-list a:hover, .hot-list a:hover {
  color: var(--primary-color);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-link {
  background: var(--bg-hover);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  transition: var(--transition);
}

.tag-link:hover {
  background: rgba(240, 185, 11, 0.15);
  color: var(--primary-color);
}

/* --- news.html 分页 --- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
}

.pagination a, .pagination span {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.pagination a:hover, .pagination a[aria-current="page"] {
  background: var(--primary-color);
  color: var(--bg-dark);
  border-color: var(--primary-color);
}

.pagination-ellipsis {
  background: none;
  border: none;
}

/* --- news.html 卡片补充 --- */
.news-card-body {
  padding: 24px;
}

.news-card-link {
  display: block;
  text-align: right;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--primary-color);
}

.news-card-meta {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.news-tag, .news-tag-hot, .news-tag-new, .news-tag-analysis {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  margin-right: 6px;
}

.news-tag-hot { background: rgba(246, 70, 93, 0.15); color: var(--danger-color); }
.news-tag-new { background: rgba(14, 203, 129, 0.15); color: var(--success-color); }
.news-tag-analysis { background: rgba(240, 185, 11, 0.15); color: var(--primary-color); }

/* --- news-detail.html 补充 --- */
.news-lead {
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 500;
  padding: 20px 24px;
  background: rgba(240, 185, 11, 0.06);
  border-radius: 10px;
  border-left: 4px solid var(--primary-color);
  margin-bottom: 32px;
  line-height: 1.7;
}

.news-quote {
  font-style: italic;
  color: var(--text-secondary);
}

.news-hero-image {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 32px;
}

.news-tags {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.news-tags-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.news-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
}

.news-share-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- news-detail.html 相关文章 --- */
.related-articles {
  padding-top: 60px;
  margin-top: 60px;
  border-top: 1px solid var(--border-color);
}

.related-articles h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 28px;
}

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

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

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

.related-card-image {
  height: 160px;
  overflow: hidden;
}

.related-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.related-card-body {
  padding: 20px;
}

.related-card-tag {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.related-card-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.related-card-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-more {
  text-align: center;
  margin-top: 28px;
}

/* --- contact.html 表单补充 --- */
.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 40px;
}

.contact-form-container h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.contact-form-container > p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.form-check input[type="checkbox"] {
  margin-top: 3px;
  width: auto;
}

/* --- contact.html 侧栏补充 --- */
.contact-info-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-info-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.contact-info-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-info-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-sidebar-card, .contact-social-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
}

.contact-social-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.social-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.social-btn {
  width: 44px;
  height: 44px;
  background: var(--bg-hover);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
  font-size: 1.2rem;
}

.social-btn:hover {
  background: var(--primary-color);
  color: var(--bg-dark);
}

/* --- 响应式补充 --- */
@media (max-width: 1024px) {
  .company-stats { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .vision-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .news-layout { grid-template-columns: 1fr; }
  .news-sidebar { position: static; }
  .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .company-stats { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: 1fr; }
  .vision-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .timeline { padding-left: 28px; }
  .contact-form-wrapper { padding: 24px; }
}

@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
}