/* 球速体育 - 全局样式 */
:root {
  --primary: #FF6B35;
  --primary-light: #FF8C5A;
  --primary-dark: #E55A2B;
  --secondary: #1A1A2E;
  --accent: #16213E;
  --text: #2D3436;
  --text-light: #636E72;
  --bg: #F8F9FA;
  --card-bg: #FFFFFF;
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(255,255,255,0.3);
  --shadow: 0 8px 32px rgba(0,0,0,0.1);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-width: 1280px;
  --header-height: 72px;
}

.dark-mode {
  --primary: #FF6B35;
  --primary-light: #FF8C5A;
  --primary-dark: #E55A2B;
  --secondary: #0F0F23;
  --accent: #1A1A3E;
  --text: #E0E0E0;
  --text-light: #A0A0A0;
  --bg: #121212;
  --card-bg: #1E1E2E;
  --glass-bg: rgba(30,30,46,0.7);
  --glass-border: rgba(255,255,255,0.1);
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  margin-bottom: 0.5em;
}

p {
  margin-bottom: 1em;
}

ul, ol {
  padding-left: 1.5em;
  margin-bottom: 1em;
}

/* 头部 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo a {
  display: flex;
  align-items: center;
}

.logo img {
  height: 40px;
  width: auto;
  transition: var(--transition);
}

.logo img:hover {
  transform: scale(1.05);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 8px;
  padding: 0;
  margin: 0;
}

.main-nav ul li a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: var(--transition);
}

.main-nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 2px;
}

.main-nav ul li a:hover::after,
.main-nav ul li a.active::after {
  width: 60%;
}

.main-nav ul li a:hover {
  color: var(--primary);
  background: rgba(255,107,53,0.08);
}

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

.header-actions button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 8px;
  border-radius: 50%;
  transition: var(--transition);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.header-actions button:hover {
  background: rgba(255,107,53,0.12);
  color: var(--primary);
  transform: scale(1.1);
}

.menu-toggle {
  display: none;
}

.search-box {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
}

.search-box form {
  display: flex;
  gap: 8px;
}

.search-box input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  background: var(--card-bg);
  color: var(--text);
  transition: var(--transition);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,107,53,0.15);
}

.search-box button {
  padding: 12px 24px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.search-box button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--text-light);
}

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

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

/* 主内容区域 */
main {
  padding-top: var(--header-height);
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Hero Banner */
.hero-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 60px 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  margin: 20px 0;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%);
  min-height: 400px;
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,107,53,0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(255,107,53,0.1) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-10%, 10%); }
}

.hero-content {
  flex: 1;
  padding: 40px;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 3rem;
  color: white;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
  animation: fadeInUp 0.8s ease;
}

.hero-content p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  max-width: 500px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.cta-button {
  display: inline-block;
  padding: 16px 40px;
  background: var(--primary);
  color: white;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.1rem;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(255,107,53,0.4);
  animation: fadeInUp 0.8s ease 0.2s both;
}

.cta-button:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255,107,53,0.5);
  color: white;
}

.hero-image {
  flex: 1;
  position: relative;
  z-index: 1;
  animation: fadeInRight 0.8s ease 0.3s both;
}

.hero-image img {
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

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

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

/* 通用section样式 */
section {
  padding: 60px 0;
}

section h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  display: inline-block;
  width: 100%;
}

section h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--primary);
  margin: 12px auto 0;
  border-radius: 2px;
}

/* 品牌介绍 */
.brand-intro {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 60px 40px;
  margin: 20px 0;
  box-shadow: var(--shadow);
}

.brand-intro p {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* 产品卡片 */
.product-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 20px;
}

.product-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.15);
}

.product-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

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

.product-card h3 {
  padding: 20px 20px 8px;
  font-size: 1.3rem;
}

.product-card p {
  padding: 0 20px 20px;
  color: var(--text-light);
  font-size: 0.95rem;
}

/* 服务介绍 */
.service-intro {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 60px 40px;
  margin: 20px 0;
  box-shadow: var(--shadow);
}

.service-intro ul {
  max-width: 700px;
  margin: 0 auto;
  list-style: none;
  padding: 0;
}

.service-intro ul li {
  padding: 16px 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  font-size: 1.05rem;
  transition: var(--transition);
}

.dark-mode .service-intro ul li {
  border-bottom-color: rgba(255,255,255,0.05);
}

.service-intro ul li:hover {
  padding-left: 8px;
  color: var(--primary);
}

.service-intro ul li strong {
  color: var(--primary);
}

/* 优势卡片 */
.advantage-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.advantage-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.advantage-card img {
  width: 80px;
  height: 80px;
  margin: 0 auto 16px;
  transition: var(--transition);
}

.advantage-card:hover img {
  transform: rotate(10deg) scale(1.1);
}

.advantage-card h3 {
  margin-bottom: 12px;
}

.advantage-card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* 案例展示 */
.case-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.case-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.case-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

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

.case-card h3 {
  padding: 20px 20px 8px;
}

.case-card p {
  padding: 0 20px 20px;
  color: var(--text-light);
}

/* 新闻资讯 */
.news-articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.news-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.news-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.news-item img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: var(--transition);
}

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

.news-item h3 {
  padding: 16px 20px 8px;
  font-size: 1.1rem;
}

.news-item p {
  padding: 0 20px 8px;
  color: var(--text-light);
  font-size: 0.9rem;
}

.news-item time {
  display: block;
  padding: 0 20px 16px;
  color: var(--text-light);
  font-size: 0.85rem;
}

/* 最新文章 */
.article-list {
  display: grid;
  gap: 20px;
}

.article-list article {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-left: 4px solid var(--primary);
}

.article-list article:hover {
  transform: translateX(6px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.article-list article h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.article-list article p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* 热门推荐 */
.recommend-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.recommend-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

.recommend-card::after {
  content: '→';
  position: absolute;
  bottom: 20px;
  right: 20px;
  font-size: 1.5rem;
  color: var(--primary);
  opacity: 0;
  transition: var(--transition);
}

.recommend-card:hover::after {
  opacity: 1;
  transform: translateX(6px);
}

.recommend-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.recommend-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.recommend-card h3 {
  padding: 16px 20px 8px;
}

.recommend-card p {
  padding: 0 20px 20px;
  color: var(--text-light);
  font-size: 0.9rem;
}

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

.faq-list details {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

.faq-list details:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.faq-list details summary {
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.faq-list details summary::-webkit-details-marker {
  display: none;
}

.faq-list details summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--primary);
  transition: var(--transition);
}

.faq-list details[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-list details[open] summary {
  background: rgba(255,107,53,0.05);
}

.faq-list details p {
  padding: 0 24px 18px;
  color: var(--text-light);
  margin: 0;
}

/* HowTo */
.howto ol {
  max-width: 700px;
  margin: 0 auto;
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.howto ol li {
  counter-increment: step;
  padding: 16px 0 16px 50px;
  position: relative;
  font-size: 1.05rem;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.dark-mode .howto ol li {
  border-bottom-color: rgba(255,255,255,0.05);
}

.howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.howto ol li strong {
  color: var(--primary);
}

/* 联系 */
.contact {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 60px 40px;
  margin: 20px 0;
  box-shadow: var(--shadow);
}

.contact ul {
  max-width: 500px;
  margin: 0 auto;
  list-style: none;
  padding: 0;
}

.contact ul li {
  padding: 10px 0;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.contact ul li::before {
  content: '•';
  color: var(--primary);
  font-weight: bold;
  font-size: 1.5rem;
}

/* 相关推荐 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.related-links a {
  padding: 12px 24px;
  background: var(--card-bg);
  border-radius: 50px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  color: var(--text);
  font-weight: 500;
}

.related-links a:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255,107,53,0.3);
}

/* 最新更新 */
.latest-updates ul {
  max-width: 600px;
  margin: 0 auto;
  list-style: none;
  padding: 0;
}

.latest-updates ul li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  display: flex;
  gap: 12px;
  align-items: center;
}

.dark-mode .latest-updates ul li {
  border-bottom-color: rgba(255,255,255,0.05);
}

.latest-updates ul li::before {
  content: '🆕';
  font-size: 1.2rem;
}

/* 团队/公司/作者/版权/隐私/免责 */
.team-intro,
.company-intro,
.author-intro,
.copyright-info,
.privacy-policy,
.disclaimer {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px;
  margin: 20px 0;
  box-shadow: var(--shadow);
}

.team-intro p,
.company-intro p,
.author-intro p,
.copyright-info p,
.privacy-policy p,
.disclaimer p {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-light);
  line-height: 1.8;
}

/* 底部 */
footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.8);
  padding: 60px 20px 20px;
  margin-top: 60px;
  border-radius: var(--radius) var(--radius) 0 0;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
}

.footer-content h3 {
  color: white;
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.footer-links ul {
  list-style: none;
  padding: 0;
}

.footer-links ul li {
  margin-bottom: 8px;
}

.footer-links ul li a {
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}

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

.footer-contact p {
  margin-bottom: 8px;
  color: rgba(255,255,255,0.7);
}

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

.footer-qrcode img {
  width: 120px;
  height: 120px;
  margin: 0 auto 12px;
  border-radius: var(--radius-sm);
  border: 2px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}

.footer-qrcode img:hover {
  border-color: var(--primary);
  transform: scale(1.05);
}

.footer-icp {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-icp p {
  margin-bottom: 4px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 20px auto 0;
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.footer-bottom a {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  transition: var(--transition);
}

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

/* 返回顶部 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(255,107,53,0.4);
  transition: var(--transition);
  z-index: 999;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(255,107,53,0.5);
}

/* 暗色模式适配 */
.dark-mode .back-to-top {
  box-shadow: 0 4px 20px rgba(255,107,53,0.3);
}

/* 滚动动画 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1024px) {
  .hero-banner {
    flex-direction: column;
    text-align: center;
    padding: 40px 20px;
  }
  
  .hero-content p {
    margin: 0 auto 32px;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 20px;
    transform: translateY(-100%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }
  
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }
  
  .main-nav ul li a {
    display: block;
    padding: 12px 16px;
    font-size: 1.1rem;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .hero-content p {
    font-size: 1rem;
  }
  
  section {
    padding: 40px 0;
  }
  
  section h2 {
    font-size: 1.6rem;
  }
  
  .product-cards,
  .case-cards,
  .news-articles,
  .advantage-cards,
  .recommend-cards {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-links ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }
  
  .breadcrumb {
    font-size: 0.8rem;
    padding: 8px 20px;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0 12px;
  }
  
  .logo img {
    height: 32px;
  }
  
  .hero-content {
    padding: 20px;
  }
  
  .hero-content h1 {
    font-size: 1.6rem;
  }
  
  .cta-button {
    padding: 14px 28px;
    font-size: 1rem;
  }
  
  .brand-intro,
  .service-intro,
  .contact,
  .team-intro,
  .company-intro,
  .author-intro,
  .copyright-info,
  .privacy-policy,
  .disclaimer {
    padding: 30px 20px;
  }
  
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }
}

/* 玻璃效果通用类 */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

/* 渐变文本 */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), #FFD700);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 数字滚动 */
.number-scroll {
  font-variant-numeric: tabular-nums;
}

/* 轮播图 */
.carousel-slide {
  display: none;
  animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}