/* ============================================
   九一漫画 - 全局样式表
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --color-primary: #ff4757;
  --color-primary-dark: #e84118;
  --color-secondary: #3742fa;
  --color-accent: #ffa502;
  --color-bg: #f8f9fa;
  --color-bg-dark: #1a1a2e;
  --color-bg-card: #ffffff;
  --color-text: #2f3542;
  --color-text-light: #747d8c;
  --color-text-white: #ffffff;
  --color-border: #e1e4e8;
  --color-gradient-start: #ff4757;
  --color-gradient-end: #3742fa;

  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.1);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

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

/* ---------- 通用容器 ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
}

.section-title p {
  color: var(--color-text-light);
  font-size: 1rem;
  margin-top: 20px;
}

/* ---------- 顶部 Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1rem;
}

.main-nav ul {
  display: flex;
  gap: 8px;
}

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

.main-nav a:hover,
.main-nav a.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero 主视觉 ---------- */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  color: #fff;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(255, 71, 87, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(55, 66, 250, 0.25) 0%, transparent 50%);
}

.hero-bg-images {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-bg-images img {
  position: absolute;
  width: 400px;
  height: 560px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: var(--shadow-lg);
  opacity: 0.85;
}

.hero-bg-images img:nth-child(1) {
  top: 10%;
  right: 5%;
  transform: rotate(8deg);
  animation: float 8s ease-in-out infinite;
}

.hero-bg-images img:nth-child(2) {
  bottom: 15%;
  right: 15%;
  transform: rotate(-6deg);
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(var(--r, 0deg)); }
  50% { transform: translateY(-20px) rotate(calc(var(--r, 0deg) + 2deg)); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease-out;
}

.hero-content h1 span {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 36px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 71, 87, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(255, 71, 87, 0.5);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  transform: translateY(-3px);
  color: #fff;
}

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

/* ---------- 特性区 ---------- */
.features {
  padding: 100px 0;
  background: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

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

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

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255,71,87,0.1), rgba(55,66,250,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 24px;
}

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

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

/* ---------- 热门漫画/服务区 ---------- */
.services {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, #fff 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

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

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-card .card-thumb {
  position: relative;
  padding-top: 133%;
  overflow: hidden;
}

.service-card .card-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.service-card .card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-primary);
  color: #fff;
  z-index: 2;
}

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

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.service-card .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.service-card .rating {
  color: var(--color-accent);
  font-weight: 600;
}

/* ---------- Stats 数据统计 ---------- */
.stats {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #16213e 100%);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-item h3 {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.stat-item p {
  font-size: 1rem;
  opacity: 0.8;
}

/* ---------- 内容区 ---------- */
.content-section {
  padding: 100px 0;
  background: #fff;
}

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

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

.content-text p {
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.content-features li {
  padding: 10px 0;
  padding-left: 32px;
  position: relative;
  color: var(--color-text);
}

.content-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

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

.content-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

/* ---------- FAQ ---------- */
.faq {
  padding: 100px 0;
  background: var(--color-bg);
}

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

.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background: #f8f9fa;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question::after {
  content: '−';
}

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

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--color-text-light);
}

/* ---------- CTA ---------- */
.cta {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: pulse 6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

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

.cta h2 {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 20px;
}

.cta p {
  font-size: 1.15rem;
  opacity: 0.9;
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

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

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--color-primary);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.footer-col a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
}

/* ---------- 页面通用 Banner ---------- */
.page-banner {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #16213e 100%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(255, 71, 87, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(55, 66, 250, 0.2) 0%, transparent 50%);
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.page-banner p {
  opacity: 0.9;
  font-size: 1.05rem;
}

.breadcrumb {
  margin-top: 16px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.breadcrumb a {
  color: rgba(255,255,255,0.9);
}

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

/* ---------- 新闻列表页 ---------- */
.news-list {
  padding: 80px 0;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
}

.news-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.news-card .thumb {
  height: 200px;
  overflow: hidden;
}

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

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

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

.news-card .meta-info {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.news-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.5;
  transition: var(--transition);
}

.news-card:hover h3 {
  color: var(--color-primary);
}

.news-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

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

.article-content {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-sm);
}

.article-content .article-meta {
  display: flex;
  gap: 24px;
  color: var(--color-text-light);
  font-size: 0.9rem;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
}

.article-content .article-featured-img {
  width: 100%;
  border-radius: var(--radius-md);
  margin-bottom: 32px;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--color-text);
}

.article-content p {
  color: var(--color-text);
  line-height: 1.9;
  margin-bottom: 20px;
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: #f8f9fa;
  padding: 20px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-light);
  font-style: italic;
}

/* ---------- Products 产品页 ---------- */
.products-section {
  padding: 80px 0;
}

.product-filters {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: 50px;
  background: #fff;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9rem;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  border-color: transparent;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

/* ---------- About 页面 ---------- */
.about-section {
  padding: 80px 0;
}

.about-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px;
}

.about-intro h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.about-intro p {
  color: var(--color-text-light);
  line-height: 1.9;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.team-card {
  text-align: center;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 20px;
  overflow: hidden;
}

.team-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-card .role {
  color: var(--color-primary);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

/* ---------- Contact 页面 ---------- */
.contact-section {
  padding: 80px 0;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255,71,87,0.1);
}

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

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

.info-item {
  display: flex;
  gap: 16px;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.info-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(255,71,87,0.1), rgba(55,66,250,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.info-item h4 {
  font-weight: 600;
  margin-bottom: 4px;
}

.info-item p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  color: #fff;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-content h1 { font-size: 2.8rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .content-wrapper { grid-template-columns: 1fr; }
  .hero-bg-images { display: none; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }
  .main-nav.active { transform: translateY(0); }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { display: block; padding: 14px; }
  .menu-toggle { display: flex; }

  .hero-content h1 { font-size: 2.2rem; }
  .hero-content p { font-size: 1rem; }
  .hero { min-height: auto; padding: 120px 0 80px; }

  .section-title h2 { font-size: 1.8rem; }
  .content-wrapper { grid-template-columns: 1fr; gap: 36px; }
  .contact-wrapper { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .stats-grid { gap: 24px; }
  .stat-item h3 { font-size: 2.2rem; }
  .cta h2 { font-size: 1.8rem; }
  .article-content { padding: 24px; }
  .page-banner h1 { font-size: 2rem; }

  .features, .services, .content-section, .faq, .cta, .stats { padding: 60px 0; }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { justify-content: center; }
  .news-grid { grid-template-columns: 1fr; }
}

/* ---------- 动画显示 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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