:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  /* 现代专业配色 - 使用深蓝紫色作为主色调，更适合体育文化传媒 */
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --border: #e2e8f0;
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 6px 0 rgba(79, 70, 229, 0.08);
  --shadow: 0 4px 12px -2px rgba(79, 70, 229, 0.12);
  --shadow-lg: 0 16px 32px -4px rgba(79, 70, 229, 0.18);
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (max-width: 768px) {
  body {
    font-size: 15px;
  }
}

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

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

.container {
  width: min(1200px, 96vw);
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 48px);
}

@media (max-width: 768px) {
  .container {
    padding: 0 24px;
  }
}

/* Navigation - Clean Modern Style */
.top-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  box-shadow: var(--shadow-sm);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
}

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

.logo:hover img {
  opacity: 0.8;
  transform: scale(1.02);
}

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

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

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  padding: 10px 16px;
  border-radius: var(--radius);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: rgba(79, 70, 229, 0.1);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Hero Banner - Modern Clean Layout */
.main-banner {
  position: relative;
  padding: 120px 0;
  background-image: var(--hero-image, none), linear-gradient(135deg, rgba(245, 247, 250, 0.85) 0%, rgba(255, 255, 255, 0.85) 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--border);
}

.banner-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 48px 40px;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.banner-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 50px;
  background: var(--accent);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 32px;
}

.banner-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 24px;
  color: var(--text);
}

.banner-description {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

/* Buttons - Modern Style */
.btn {
  padding: 14px 32px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.2px;
  transition: var(--transition);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

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

.btn-secondary {
  border-color: var(--border);
  background: var(--card);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(79, 70, 229, 0.06);
  transform: translateY(-2px);
}

/* Stats Section - Clean Grid */
.stats-section {
  padding: 80px 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  text-align: center;
}

.stat-item {
  padding: 32px 24px;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
  line-height: 1;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 16px;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Main Sections - Spacious Layout */
.main-section {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

@media (max-width: 768px) {
  .main-section {
    padding: 64px 0;
  }
}

.main-section:last-of-type {
  border-bottom: none;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: clamp(32px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
  color: var(--text);
  line-height: 1.2;
}

.section-subtitle {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

/* Products Grid - Modern Card Design */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.product-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.product-image {
  position: relative;
  width: 100%;
  height: 240px;
  overflow: hidden;
  background: var(--bg-alt);
}

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

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

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.product-content {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

.product-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(79, 70, 229, 0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  width: fit-content;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.product-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
  color: var(--text);
  line-height: 1.3;
}

.product-content p {
  color: var(--muted);
  line-height: 1.7;
  flex: 1;
  font-size: 15px;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
  }
  
.product-features span {
  font-size: 13px;
  color: var(--accent);
  background: rgba(79, 70, 229, 0.1);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-weight: 500;
  }
  
/* Features Grid - Clean Design */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  }
  
  .feature-card {
  text-align: center;
  padding: 0;
  }
  
.feature-icon {
  font-size: 48px;
  margin-bottom: 24px;
  line-height: 1;
  font-weight: 700;
  color: var(--accent);
}

.feature-card h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.feature-card p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 15px;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.service-card {
  background: var(--card);
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
  text-align: center;
}

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

.service-icon {
  font-size: 48px;
  margin-bottom: 24px;
  line-height: 1;
}

.service-card h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.service-card p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 15px;
}

/* Testimonials Section */
.testimonials-section {
  padding: 100px 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.testimonial-card {
  background: var(--card);
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.testimonial-rating {
  font-size: 20px;
  color: #fbbf24;
  letter-spacing: 2px;
}

.testimonial-text {
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  flex: 1;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.testimonial-author strong {
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
}

.testimonial-author span {
  color: var(--muted);
  font-size: 14px;
}

/* Advantages Box - Modern Design */
.advantages-box {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.06) 0%, rgba(79, 70, 229, 0.02) 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 2px solid var(--border);
  max-width: 100%;
}

.advantages-box h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--text);
}

.advantages-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.advantages-box li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  padding-left: 0;
}

.advantages-box li::before {
  content: "✓";
  color: #ffffff;
  background: var(--accent);
  font-weight: 700;
  font-size: 14px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Highlight Section */
.highlight-section {
  background: var(--bg-alt);
}

/* Footer - Clean Modern */
.footer {
  padding: 80px 0 0;
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}

.footer-grid {
  display: grid;
  gap: 48px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  margin-bottom: 16px;
  font-size: 24px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 12px;
}

.footer-slogan {
  margin-top: 16px;
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}

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

.footer-social span {
  color: var(--muted);
  font-size: 14px;
}

.footer-social a {
  color: var(--accent);
  font-size: 14px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.footer-links h4,
.footer-legal h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer p,
.footer a {
  color: var(--muted);
  font-size: 15px;
  transition: var(--transition);
  margin-bottom: 12px;
  display: block;
}

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

.footer-bottom {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-bottom p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

/* Page Hero */
.page-hero {
  padding: 80px 0 60px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.page-header-title {
  font-size: clamp(32px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  color: var(--text);
}

.page-header-subtitle {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.7;
}

/* Page Header Banner */
.page-header-banner {
  padding: 100px 0 80px;
  background-image: var(--hero-image, none), linear-gradient(135deg, rgba(245, 247, 250, 0.85) 0%, rgba(255, 255, 255, 0.85) 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--border);
}

.page-header-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 48px 40px;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.page-header-content .badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 50px;
  background: var(--accent);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.page-header-content .page-header-title {
  margin-bottom: 16px;
}

.page-header-content .page-header-title span {
  color: var(--accent);
}

/* Forms */
.form-container {
  max-width: 800px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  gap: 24px;
}

.form-grid input,
.form-grid textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--card);
  color: var(--text);
}

.form-grid input:focus,
.form-grid textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.form-grid textarea {
  min-height: 150px;
  resize: vertical;
}

.btn-full-width {
  width: 100%;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 32px;
  margin-bottom: 48px;
}

.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
}

.card-meta .tag {
  background: rgba(79, 70, 229, 0.12);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: var(--radius);
  font-weight: 600;
}

.card-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  line-height: 1.4;
}

.card-body p {
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

/* Listing Block */
.listing-block {
  margin-top: 48px;
}

.listing-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 20px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.pagination button {
  padding: 10px 16px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.pagination button:hover,
.pagination button.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

/* Two Column Grid */
.two-column-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

.price-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 2px solid var(--border);
  transition: var(--transition);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.price-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.price-card .price {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  margin: 8px 0;
  letter-spacing: -1px;
}

.price-card > p {
  color: var(--muted);
  font-size: 15px;
  margin: 0;
}

.price-card ul {
  list-style: none;
  text-align: left;
  margin: 0;
  padding: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.price-card ul li {
  color: var(--text);
  font-size: 15px;
  padding-left: 24px;
  position: relative;
  line-height: 1.6;
}

.price-card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
}

/* Content Wrapper */
.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.content-wrapper .section-title {
  margin-top: 48px;
  margin-bottom: 16px;
}

.content-wrapper .section-title:first-child {
  margin-top: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    top: 80px;
    right: 24px;
    background: var(--card);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 100;
  }

  body.nav-open .nav-links {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .main-banner {
    padding: 80px 0;
  }

  .banner-content {
    padding: 32px 24px;
  }
  
  .page-header-content {
    padding: 32px 24px;
  }

  .section-header {
    margin-bottom: 48px;
}

  .main-section {
    padding: 64px 0;
}

  .stats-section {
    padding: 64px 0;
}

  .testimonials-section {
    padding: 64px 0;
}

.stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-number {
    font-size: 36px;
  }

  .products-grid,
  .features-grid,
  .services-grid,
  .testimonials-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 24px;
}

.product-image {
    height: 200px;
}

.product-content {
  padding: 24px;
  }

  .advantages-box {
  padding: 32px 24px;
}

  .footer {
    padding: 64px 0 0;
}

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
}

  .btn {
    padding: 12px 24px;
  font-size: 14px;
}
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}