/* ==========================================================================
   桃子视频 - 全局样式
   ========================================================================== */

/* CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #ff6b9d;
  --primary-dark: #e54b7d;
  --primary-light: #ffb3c8;
  --secondary: #ffd6e0;
  --accent: #ff4757;
  --text: #2d3436;
  --text-light: #636e72;
  --bg: #ffffff;
  --bg-alt: #fff5f7;
  --bg-dark: #1a1a2e;
  --card-bg: #ffffff;
  --shadow: 0 4px 20px rgba(255, 107, 157, 0.15);
  --shadow-hover: 0 8px 30px rgba(255, 107, 157, 0.25);
  --radius: 12px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ==========================================================================
   导航栏
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
}

.nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.nav-brand .brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-menu li a {
  display: block;
  padding: 10px 20px;
  color: var(--text);
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
  background: var(--primary);
  color: white;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
  transition: var(--transition);
}

/* ==========================================================================
   Hero 区域
   ========================================================================== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-alt) 0%, #ffe4ec 50%, var(--secondary) 100%);
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 179, 200, 0.4) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1.2;
  animation: fadeInUp 1s ease;
}

.hero-text h1 .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 32px;
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.4s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(255, 107, 157, 0.5);
  color: white;
}

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

.btn-secondary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-3px);
}

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

.hero-image {
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(255, 107, 157, 0.3);
  animation: float 5s ease-in-out infinite;
}

.hero-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: white;
  padding: 16px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeInUp 1s ease 0.6s both;
}

.hero-badge .badge-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.hero-badge .badge-text strong {
  display: block;
  font-size: 1.1rem;
  color: var(--text);
}

.hero-badge .badge-text span {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* ==========================================================================
   通用 Section 样式
   ========================================================================== */
.section {
  padding: 100px 24px;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 2px;
  margin: 16px auto 0;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-light);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
}

/* ==========================================================================
   核心特性
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--card-bg);
  padding: 40px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(255, 107, 157, 0.1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

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

.feature-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-light) 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 2rem;
  transition: var(--transition);
}

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

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

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

/* ==========================================================================
   热播片库 / 服务介绍
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.service-image {
  position: relative;
  height: 220px;
  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(1.1);
}

.service-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.service-body {
  padding: 28px;
}

.service-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.service-body p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.service-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.service-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   CTA 区域
   ========================================================================== */
.cta {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #2d1f3d 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.cta h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 36px;
}

.cta .btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.footer {
  background: #1a1a2e;
  color: #a0a0b0;
  padding: 80px 24px 30px;
}

.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .nav-brand {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  line-height: 1.8;
  font-size: 0.95rem;
}

.footer-col h4 {
  color: white;
  font-size: 1.1rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  color: #a0a0b0;
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 5px;
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.9rem;
}

.footer-bottom p {
  margin-bottom: 8px;
}

/* ==========================================================================
   内页 Hero
   ========================================================================== */
.page-hero {
  min-height: 400px;
  background: linear-gradient(135deg, var(--bg-alt) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

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

.page-hero-content h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.page-hero-content p {
  font-size: 1.1rem;
  color: var(--text-light);
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--text-light);
}

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

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

/* ==========================================================================
   关于我们
   ========================================================================== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

.about-text p {
  color: var(--text-light);
  margin-bottom: 16px;
  font-size: 1rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.stat-card {
  text-align: center;
  padding: 30px 20px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ==========================================================================
   联系方式
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
}

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

.contact-card {
  background: var(--card-bg);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  gap: 20px;
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-hover);
}

.contact-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

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

.contact-form {
  background: var(--card-bg);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #eee;
  border-radius: 10px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  background: #fafafa;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.1);
}

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

/* ==========================================================================
   新闻列表
   ========================================================================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

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

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

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

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

.news-card:hover .news-image img {
  transform: scale(1.1);
}

.news-body {
  padding: 28px;
}

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

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

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

.read-more {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-more:hover {
  gap: 8px;
}

/* ==========================================================================
   新闻详情
   ========================================================================== */
.news-detail {
  max-width: 800px;
  margin: 0 auto;
}

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

.news-detail-header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.news-detail-meta {
  display: flex;
  gap: 20px;
  color: var(--text-light);
  font-size: 0.9rem;
}

.news-detail-content {
  font-size: 1.05rem;
  line-height: 1.9;
}

.news-detail-content p {
  margin-bottom: 20px;
  color: #333;
}

.news-detail-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--text);
}

.news-detail-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--text);
}

.news-detail-content img {
  border-radius: var(--radius);
  margin: 24px 0;
  box-shadow: var(--shadow);
}

.news-detail-content ul,
.news-detail-content ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.news-detail-content li {
  margin-bottom: 8px;
  color: #333;
}

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

.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 24px;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
  transition: var(--transition);
}

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

.faq-question .arrow {
  transition: transform 0.3s ease;
  color: var(--primary);
  font-size: 1.2rem;
}

.faq-item.active .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

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

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

/* ==========================================================================
   产品/影片展示
   ========================================================================== */
.products-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  border: 2px solid var(--primary-light);
  background: white;
  border-radius: 50px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  color: var(--primary);
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

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

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

.product-image {
  position: relative;
  height: 320px;
  overflow: hidden;
}

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

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 60px;
  height: 60px;
  background: rgba(255, 107, 157, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.product-card:hover .product-play {
  transform: translate(-50%, -50%) scale(1);
}

.product-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--accent);
  color: white;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-info {
  padding: 16px;
}

.product-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
}

.product-rating {
  color: #ffc107;
  font-weight: 600;
}

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

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   响应式设计
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-content,
  .about-content,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hero-text h1 {
    font-size: 2.2rem;
  }

  .hero-badge {
    left: 20px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle {
    display: flex;
  }

  .section {
    padding: 60px 20px;
  }

  .hero {
    padding: 100px 20px 60px;
    min-height: auto;
  }

  .hero-text h1 {
    font-size: 1.8rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .section-header h2,
  .page-hero-content h1,
  .cta h2 {
    font-size: 1.6rem;
  }

  .contact-form {
    padding: 24px;
  }

  .about-text h2 {
    font-size: 1.6rem;
  }
}

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

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-badge {
    position: static;
    margin-top: 20px;
  }
}

/* ==========================================================================
   可访问性
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 8px 16px;
  z-index: 9999;
  transition: top 0.2s ease;
}

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