/* 
 * 足球直播网站 - 主样式表
 * 2026年SEO优化版本
 * 移动优先响应式设计
 */

/* CSS变量定义 - 独特配色方案 */
:root {
  --primary-color: #1a5f2a;
  --secondary-color: #f7b731;
  --accent-color: #e74c3c;
  --dark-bg: #0d1117;
  --light-bg: #f8fafc;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #f1f5f9;
  --border-color: #e2e8f0;
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --gradient-primary: linear-gradient(135deg, #1a5f2a 0%, #2d8a3e 100%);
  --gradient-gold: linear-gradient(135deg, #f7b731 0%, #f5a623 100%);
  --gradient-dark: linear-gradient(180deg, #0d1117 0%, #161b22 100%);
}

/* 重置样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--light-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--secondary-color);
}

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 头部导航 - 非sticky */
.site-header {
  background: var(--gradient-dark);
  padding: 1rem 0;
  position: relative;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo img {
  width: 48px;
  height: 48px;
  border-radius: 8px;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 1px;
}

.logo-text span {
  color: var(--secondary-color);
}

/* 主导航 */
.main-nav {
  display: none;
}

.main-nav.active {
  display: flex;
  flex-direction: column;
  width: 100%;
  background: rgba(13, 17, 23, 0.98);
  padding: 1rem;
  border-radius: 12px;
  margin-top: 0.5rem;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-list li a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-light);
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.nav-list li a:hover,
.nav-list li a.active {
  background: var(--gradient-primary);
  color: #fff;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 28px;
  height: 3px;
  background: var(--text-light);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* CTA按钮 */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  background: var(--gradient-gold);
  color: var(--dark-bg);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 15px rgba(247, 183, 49, 0.4);
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(247, 183, 49, 0.5);
  color: var(--dark-bg);
}

/* Hero区域 */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background: var(--gradient-dark);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 3rem 1rem;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: rgba(247, 183, 49, 0.15);
  border: 1px solid var(--secondary-color);
  border-radius: 50px;
  color: var(--secondary-color);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-light);
  line-height: 1.3;
  margin-bottom: 1.25rem;
}

.hero-title span {
  color: var(--secondary-color);
  display: block;
}

.hero-desc {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.stat-item {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  padding: 1.25rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--secondary-color);
  display: block;
}

.stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

/* 内容区块 */
.section {
  padding: 3rem 0;
}

.section-dark {
  background: var(--gradient-dark);
  color: var(--text-light);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--gradient-gold);
  margin: 0.75rem auto 0;
  border-radius: 2px;
}

.section-desc {
  text-align: center;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 2.5rem;
  font-size: 1rem;
}

.section-dark .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

/* 比赛卡片网格 */
.match-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.match-card {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all 0.4s ease;
  border: 1px solid var(--border-color);
}

.match-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.match-card-img {
  position: relative;
  height: 180px;
  overflow: hidden;
}

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

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

.match-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 0.375rem 0.875rem;
  background: var(--accent-color);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 20px;
}

.match-card-body {
  padding: 1.25rem;
}

.match-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.match-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.match-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.9rem;
}

.match-card-link::after {
  content: '→';
  transition: transform 0.3s ease;
}

.match-card:hover .match-card-link::after {
  transform: translateX(4px);
}

/* 特色区块 */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.3s ease;
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--secondary-color);
}

.feature-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 14px;
  font-size: 1.5rem;
}

.feature-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
  color: var(--text-light);
}

.feature-content p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
}

/* 关于我们 */
.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.about-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.about-text p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.about-list {
  margin-top: 1.5rem;
}

.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--light-bg);
  border-radius: 12px;
  border-left: 4px solid var(--primary-color);
}

.about-list li::before {
  content: '✓';
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-color);
  color: #fff;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
}

/* 支付方式 */
.payment-section {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.payment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.payment-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  transition: all 0.3s ease;
}

.payment-item:hover {
  transform: translateY(-4px);
}

.payment-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--light-bg);
  border-radius: 12px;
  font-size: 1.75rem;
}

.payment-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
}

.payment-item p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 0.25rem;
}

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

.faq-item {
  margin-bottom: 1rem;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.faq-question:hover {
  background: var(--light-bg);
}

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 1.25rem;
  transition: transform 0.3s ease;
}

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

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  display: block;
}

/* 用户评论 */
.reviews-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.review-card {
  background: #fff;
  padding: 1.5rem;
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  position: relative;
}

.review-card::before {
  content: '"';
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 4rem;
  color: var(--primary-color);
  opacity: 0.1;
  font-family: Georgia, serif;
  line-height: 1;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.review-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
}

.review-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.review-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.review-rating {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}

.star {
  color: var(--secondary-color);
  font-size: 1rem;
}

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

.review-date {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

/* 牌照区块 */
.license-section {
  background: var(--gradient-dark);
  text-align: center;
}

.license-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.license-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-gold);
  border-radius: 50%;
  font-size: 2rem;
}

.license-badge h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.license-badge p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.license-number {
  margin-top: 1rem;
  padding: 0.5rem 1.25rem;
  background: rgba(247, 183, 49, 0.15);
  border-radius: 8px;
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--secondary-color);
}

/* 客服支持 */
.support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.support-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1.5rem;
  background: #fff;
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  transition: all 0.3s ease;
}

.support-card:hover {
  transform: translateY(-6px);
}

.support-icon {
  width: 72px;
  height: 72px;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-size: 1.75rem;
  color: #fff;
}

.support-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.support-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 页脚 */
.site-footer {
  background: var(--dark-bg);
  color: var(--text-light);
  padding: 3rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand .logo {
  justify-content: center;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

.footer-links ul li {
  margin-bottom: 0.625rem;
}

.footer-links ul li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

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

.footer-social {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1rem;
}

.footer-social a {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: var(--text-light);
  font-size: 1.125rem;
  transition: all 0.3s ease;
}

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

.footer-bottom {
  padding: 1.5rem 0;
  text-align: center;
}

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

.age-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--accent-color);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  border-radius: 50%;
  margin-top: 0.75rem;
}

.footer-payments {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.footer-payments img {
  height: 32px;
  width: auto;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.footer-payments img:hover {
  opacity: 1;
}

/* 面包屑导航 */
.breadcrumb {
  padding: 1rem 0;
  background: var(--light-bg);
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb-list li::after {
  content: '/';
  color: var(--text-secondary);
}

.breadcrumb-list li:last-child::after {
  display: none;
}

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

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

.breadcrumb-list li.active {
  color: var(--primary-color);
  font-weight: 600;
}

/* 内页样式 */
.page-header {
  background: var(--gradient-dark);
  padding: 3rem 0;
  text-align: center;
}

.page-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-light);
  margin-bottom: 0.75rem;
}

.page-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.7);
}

.content-article {
  padding: 2.5rem 0;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-color);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 1.5rem 0 0.75rem;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.article-content ul,
.article-content ol {
  margin: 1rem 0 1rem 1.5rem;
}

.article-content ul li,
.article-content ol li {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.article-content ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: 700;
}

.article-content ol {
  counter-reset: item;
}

.article-content ol li {
  counter-increment: item;
}

.article-content ol li::before {
  content: counter(item) '.';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: 700;
}

.article-img {
  margin: 1.5rem 0;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

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

.article-img figcaption {
  padding: 0.75rem;
  background: var(--light-bg);
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
}

/* 标签页 */
.tags-section {
  padding: 3rem 0;
}

.tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.tag-link {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.tag-link:hover {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
}

/* APP下载页 */
.app-section {
  padding: 3rem 0;
}

.app-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.app-info h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.app-info p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.app-features {
  margin: 1.5rem 0;
}

.app-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  padding: 0.75rem;
  background: var(--light-bg);
  border-radius: 10px;
}

.app-features li::before {
  content: '✓';
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-color);
  color: #fff;
  border-radius: 50%;
  font-size: 0.75rem;
}

.download-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  background: var(--dark-bg);
  color: #fff;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.download-btn:hover {
  background: var(--primary-color);
  color: #fff;
}

.download-btn .icon {
  font-size: 1.5rem;
}

.download-btn .text {
  text-align: left;
}

.download-btn .text small {
  display: block;
  font-size: 0.7rem;
  opacity: 0.7;
}

.download-btn .text span {
  font-weight: 700;
  font-size: 1rem;
}

.app-mockup {
  text-align: center;
}

.app-mockup img {
  max-width: 300px;
  margin: 0 auto;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

/* 负责任体育 */
.responsible-section {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  padding: 2.5rem 0;
}

.responsible-content {
  text-align: center;
}

.responsible-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-color);
  border-radius: 50%;
  font-size: 2rem;
  color: #fff;
}

.responsible-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.responsible-content p {
  max-width: 700px;
  margin: 0 auto 1.5rem;
  color: var(--text-secondary);
}

.responsible-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.responsible-links a {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  background: #fff;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.responsible-links a:hover {
  background: var(--primary-color);
  color: #fff;
}

/* 作者信息 */
.author-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem;
  background: var(--light-bg);
  border-radius: 20px;
  margin: 2rem 0;
}

.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.author-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.author-title {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.author-bio {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 500px;
}

/* 响应式设计 - 平板 */
@media (min-width: 640px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .match-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .payment-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-content {
    grid-template-columns: 1fr 1fr;
  }
  
  .app-content {
    grid-template-columns: 1fr 1fr;
  }
  
  .author-box {
    flex-direction: row;
    text-align: left;
    gap: 1.5rem;
  }
  
  .author-avatar {
    margin-bottom: 0;
  }
}

/* 响应式设计 - 桌面 */
@media (min-width: 1024px) {
  .main-nav {
    display: flex;
  }
  
  .main-nav.active {
    flex-direction: row;
    width: auto;
    background: none;
    padding: 0;
    margin-top: 0;
  }
  
  .nav-list {
    flex-direction: row;
    gap: 0.25rem;
  }
  
  .menu-toggle {
    display: none;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-title span {
    display: inline;
  }
  
  .section {
    padding: 4rem 0;
  }
  
  .section-title {
    font-size: 2.25rem;
  }
  
  .match-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .reviews-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .support-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
  
  .footer-brand {
    text-align: left;
  }
  
  .footer-brand .logo {
    justify-content: flex-start;
  }
  
  .footer-social {
    justify-content: flex-start;
  }
}

/* 打印样式 */
@media print {
  .site-header,
  .site-footer,
  .cta-btn {
    display: none;
  }
  
  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
}

/* 动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

/* 无障碍 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 跳过导航链接 */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: #fff;
  padding: 8px 16px;
  z-index: 1000;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 0;
}