/* ========== 全局重置与变量 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1a1a2e;
  --primary-light: #2a2a4e;
  --accent: #f0c040;
  --accent-glow: rgba(240, 192, 64, 0.4);
  --bg: #ffffff;
  --bg-alt: #f4f6fc;
  --text: #2c2c3e;
  --text-light: #6b6b80;
  --card-bg: #ffffff;
  --card-border: rgba(26, 26, 46, 0.08);
  --shadow-sm: 0 2px 12px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 8px 30px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 20px 60px rgba(26, 26, 46, 0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

/* 暗色模式 */
body.dark-mode {
  --primary: #0f0f1a;
  --primary-light: #1a1a30;
  --accent: #ffd700;
  --accent-glow: rgba(255, 215, 0, 0.35);
  --bg: #0b0b14;
  --bg-alt: #12121f;
  --text: #e8e8f0;
  --text-light: #9a9ab0;
  --card-bg: #18182a;
  --card-border: rgba(255, 255, 255, 0.06);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(15, 15, 26, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ========== 基础样式 ========== */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 24px;
  position: relative;
}

/* ========== 标题 ========== */
h1, h2, h3, h4 {
  color: var(--primary);
  font-weight: 700;
  line-height: 1.25;
  transition: color var(--transition);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-align: center;
  margin-bottom: 1.5rem;
  position: relative;
}

h2::after {
  content: '';
  display: block;
  width: 70px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #ff8c00);
  margin: 16px auto 0;
  border-radius: 4px;
  transition: background var(--transition);
}

h3 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.8;
}

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

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

/* ========== 按钮 ========== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--accent), #f5a623);
  color: var(--primary);
  font-weight: 700;
  font-size: 1.05rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 20px var(--accent-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(-1px);
}

/* ========== 导航栏 ========== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.92);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition);
}

body.dark-mode header {
  background: rgba(15, 15, 26, 0.92);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform var(--transition);
}

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

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

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 50px;
  transition: all var(--transition);
  position: relative;
  font-size: 0.95rem;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: translateX(-50%) scaleX(1);
}

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

.nav-actions button {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.nav-actions button:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: scale(1.05);
}

.search-bar {
  padding: 12px 24px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 12px;
  animation: slideDown 0.3s ease;
}

.search-bar input {
  flex: 1;
  padding: 12px 20px;
  border-radius: 50px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 1rem;
  transition: border-color var(--transition);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--accent);
}

.search-bar button {
  padding: 12px 28px;
  background: var(--accent);
  border: none;
  border-radius: 50px;
  color: var(--primary);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.search-bar button:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.mobile-menu-toggle {
  display: none;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== Hero 横幅 ========== */
.hero-banner {
  position: relative;
  height: 92vh;
  min-height: 600px;
  overflow: hidden;
  margin-top: 68px;
  background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 30%, #2a1a4e 60%, #1a2a4e 100%);
}

.hero-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(240, 192, 64, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 80% 30%, rgba(255, 140, 0, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.banner-slider {
  position: relative;
  height: 100%;
}

.banner-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.8s ease, transform 0.8s ease;
  padding: 40px;
  transform: scale(0.98);
}

.banner-slide.active {
  opacity: 1;
  transform: scale(1);
}

.banner-content {
  max-width: 720px;
  text-align: center;
  color: #fff;
  animation: fadeInUp 1s ease;
}

.banner-content h1,
.banner-content h2 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.2rem);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  margin-bottom: 1rem;
}

.banner-content h2::after {
  background: var(--accent);
}

.banner-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: clamp(1rem, 2vw, 1.2rem);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.banner-controls {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 24px;
  pointer-events: none;
}

.banner-controls button {
  pointer-events: auto;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.8rem;
  padding: 14px 22px;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition);
}

.banner-controls button:hover {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
  transform: scale(1.1);
}

.banner-dots {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 14px;
}

.banner-dots button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.banner-dots button[aria-selected="true"] {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.3);
  box-shadow: 0 0 16px var(--accent-glow);
}

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

/* ========== 网格布局 ========== */
.stats-grid,
.culture-grid,
.team-grid,
.products-grid,
.advantages-grid,
.solution-grid,
.data-grid,
.cases-grid,
.testimonials-grid,
.news-grid,
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

/* ========== 卡片通用 ========== */
.stat-item,
.data-item,
.culture-card,
.team-card,
.product-card,
.advantage-item,
.solution-card,
.case-card,
.testimonial-card,
.news-card,
.article-card {
  padding: 36px 28px;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::before,
.data-item::before,
.culture-card::before,
.team-card::before,
.product-card::before,
.advantage-item::before,
.solution-card::before,
.case-card::before,
.testimonial-card::before,
.news-card::before,
.article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.stat-item:hover,
.data-item:hover,
.culture-card:hover,
.team-card:hover,
.product-card:hover,
.advantage-item:hover,
.solution-card:hover,
.case-card:hover,
.testimonial-card:hover,
.news-card:hover,
.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(240, 192, 64, 0.2);
}

.stat-item:hover::before,
.data-item:hover::before,
.culture-card:hover::before,
.team-card:hover::before,
.product-card:hover::before,
.advantage-item:hover::before,
.solution-card:hover::before,
.case-card:hover::before,
.testimonial-card:hover::before,
.news-card:hover::before,
.article-card:hover::before {
  opacity: 1;
}

/* ========== 统计数字 ========== */
.stat-item,
.data-item {
  text-align: center;
  padding: 40px 24px;
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--accent);
  display: inline;
  line-height: 1;
}

.stat-item span:not(.stat-number),
.data-item span:not(.stat-number) {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  margin-left: 2px;
}

.stat-item p,
.data-item p {
  margin-top: 8px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-light);
}

/* ========== 团队卡片 ========== */
.team-avatar {
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
}

.team-avatar svg {
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}

.team-card:hover .team-avatar svg {
  transform: scale(1.05);
}

.team-role {
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 12px;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
}

/* ========== 服务渠道 ========== */
.service-channels {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.channel-item {
  text-align: center;
  padding: 28px 32px;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-sm);
  min-width: 200px;
  transition: all var(--transition);
}

.channel-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.channel-item h3 {
  color: var(--accent);
  margin-bottom: 8px;
}

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

.faq-item {
  margin-bottom: 12px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--card-border);
  transition: border-color var(--transition);
}

.faq-item[open] {
  border-color: var(--accent);
}

summary {
  cursor: pointer;
  font-weight: 600;
  padding: 18px 24px;
  background: var(--card-bg);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--accent);
  transition: transform var(--transition);
}

details[open] summary::after {
  transform: rotate(45deg);
}

summary:hover {
  background: var(--bg-alt);
}

details[open] summary {
  border-bottom: 1px solid var(--card-border);
}

details[open] p {
  padding: 20px 24px;
  background: var(--card-bg);
  animation: fadeIn 0.3s ease;
}

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

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

.howto-list li {
  counter-increment: step;
  padding: 20px 24px 20px 60px;
  position: relative;
  margin-bottom: 16px;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  transition: all var(--transition);
}

.howto-list li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: var(--primary);
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.howto-list li:hover {
  transform: translateX(4px);
  border-color: var(--accent);
}

/* ========== 网站地图 ========== */
.sitemap-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  justify-content: center;
  padding: 0;
}

.sitemap-list a {
  padding: 10px 20px;
  background: var(--card-bg);
  border-radius: 50px;
  border: 1px solid var(--card-border);
  transition: all var(--transition);
  font-weight: 500;
}

.sitemap-list a:hover {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ========== 联系信息 ========== */
.contact-info {
  max-width: 600px;
  margin: 0 auto;
  padding: 32px;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-sm);
}

.contact-info p {
  margin-bottom: 12px;
  display: flex;
  gap: 8px;
}

.contact-info strong {
  color: var(--primary);
  min-width: 120px;
}

/* ========== 引用 ========== */
blockquote {
  border-left: 4px solid var(--accent);
  padding: 20px 28px;
  background: var(--card-bg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 1rem;
  position: relative;
}

blockquote::before {
  content: '"';
  font-size: 3rem;
  color: var(--accent);
  position: absolute;
  top: 8px;
  left: 12px;
  opacity: 0.3;
  line-height: 1;
}

blockquote p {
  font-style: italic;
  margin-bottom: 8px;
}

blockquote footer {
  font-weight: 600;
  color: var(--accent);
}

/* ========== Footer ========== */
footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 80px 24px 40px;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #ff8c00, var(--accent));
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 48px;
}

.footer-container h3 {
  color: #fff;
  margin-bottom: 20px;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  margin-top: 12px;
  font-size: 0.95rem;
}

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

.footer-links li {
  margin-bottom: 10px;
}

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

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

.footer-contact p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.footer-legal {
  grid-column: 1 / -1;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 28px;
  margin-top: 20px;
}

.footer-legal p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

.footer-legal a {
  color: var(--accent);
  transition: opacity var(--transition);
}

.footer-legal a:hover {
  opacity: 0.8;
}

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #f5a623);
  color: var(--primary);
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  box-shadow: 0 4px 20px var(--accent-glow);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.back-to-top:active {
  transform: translateY(-2px);
}

/* ========== 滚动动画 ========== */
.section {
  opacity: 0;
  transform: translateY(40px);
  animation: sectionFadeIn 0.8s ease forwards;
}

.section:nth-child(2) { animation-delay: 0.1s; }
.section:nth-child(3) { animation-delay: 0.2s; }
.section:nth-child(4) { animation-delay: 0.3s; }
.section:nth-child(5) { animation-delay: 0.4s; }
.section:nth-child(6) { animation-delay: 0.5s; }
.section:nth-child(7) { animation-delay: 0.6s; }
.section:nth-child(8) { animation-delay: 0.7s; }
.section:nth-child(9) { animation-delay: 0.8s; }
.section:nth-child(10) { animation-delay: 0.9s; }
.section:nth-child(11) { animation-delay: 1.0s; }
.section:nth-child(12) { animation-delay: 1.1s; }
.section:nth-child(13) { animation-delay: 1.2s; }
.section:nth-child(14) { animation-delay: 1.3s; }
.section:nth-child(15) { animation-delay: 1.4s; }
.section:nth-child(16) { animation-delay: 1.5s; }
.section:nth-child(17) { animation-delay: 1.6s; }
.section:nth-child(18) { animation-delay: 1.7s; }
.section:nth-child(19) { animation-delay: 1.8s; }
.section:nth-child(20) { animation-delay: 1.9s; }
.section:nth-child(21) { animation-delay: 2.0s; }
.section:nth-child(22) { animation-delay: 2.1s; }
.section:nth-child(23) { animation-delay: 2.2s; }
.section:nth-child(24) { animation-delay: 2.3s; }
.section:nth-child(25) { animation-delay: 2.4s; }
.section:nth-child(26) { animation-delay: 2.5s; }
.section:nth-child(27) { animation-delay: 2.6s; }
.section:nth-child(28) { animation-delay: 2.7s; }
.section:nth-child(29) { animation-delay: 2.8s; }

@keyframes sectionFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-links.open {
    display: flex;
    animation: slideDown 0.3s ease;
  }

  .nav-links a {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-banner {
    height: 80vh;
    min-height: 500px;
  }

  .banner-content h1,
  .banner-content h2 {
    font-size: 2rem;
  }

  .section {
    padding: 80px 20px;
  }

  .stats-grid,
  .culture-grid,
  .team-grid,
  .products-grid,
  .advantages-grid,
  .solution-grid,
  .data-grid,
  .cases-grid,
  .testimonials-grid,
  .news-grid,
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-channels {
    flex-direction: column;
    align-items: center;
  }

  .footer-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .nav-container {
    padding: 12px 16px;
  }

  .hero-banner {
    height: 75vh;
    min-height: 450px;
    margin-top: 60px;
  }

  .banner-content h1,
  .banner-content h2 {
    font-size: 1.6rem;
  }

  .banner-content p {
    font-size: 0.95rem;
  }

  .banner-controls button {
    font-size: 1.4rem;
    padding: 10px 16px;
  }

  .banner-dots {
    bottom: 24px;
  }

  .section {
    padding: 60px 16px;
  }

  h2 {
    font-size: 1.6rem;
  }

  .stats-grid,
  .culture-grid,
  .team-grid,
  .products-grid,
  .advantages-grid,
  .solution-grid,
  .data-grid,
  .cases-grid,
  .testimonials-grid,
  .news-grid,
  .articles-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .stat-item,
  .data-item,
  .culture-card,
  .team-card,
  .product-card,
  .advantage-item,
  .solution-card,
  .case-card,
  .testimonial-card,
  .news-card,
  .article-card {
    padding: 28px 20px;
  }

  .btn-primary {
    padding: 12px 28px;
    font-size: 0.95rem;
  }

  .contact-info {
    padding: 24px;
  }

  .contact-info p {
    flex-direction: column;
    gap: 4px;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .footer-links ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .footer-links li {
    margin-bottom: 0;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1.3rem;
  }

  .sitemap-list {
    gap: 8px;
  }

  .sitemap-list a {
    padding: 8px 16px;
    font-size: 0.9rem;
  }
}

@media (max-width: 380px) {
  .hero-banner {
    height: 70vh;
    min-height: 400px;
  }

  .banner-content h1,
  .banner-content h2 {
    font-size: 1.4rem;
  }

  .nav-actions button {
    width: 36px;
    height: 36px;
    padding: 6px;
  }
}

/* ========== 暗色模式微调 ========== */
body.dark-mode .nav-links a {
  color: rgba(255, 255, 255, 0.75);
}

body.dark-mode .nav-links a:hover,
body.dark-mode .nav-links a.active {
  background: rgba(255, 255, 255, 0.06);
}

body.dark-mode .search-bar input {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .stat-item,
body.dark-mode .data-item,
body.dark-mode .culture-card,
body.dark-mode .team-card,
body.dark-mode .product-card,
body.dark-mode .advantage-item,
body.dark-mode .solution-card,
body.dark-mode .case-card,
body.dark-mode .testimonial-card,
body.dark-mode .news-card,
body.dark-mode .article-card,
body.dark-mode .channel-item,
body.dark-mode .contact-info,
body.dark-mode .howto-list li {
  background: var(--card-bg);
  border-color: var(--card-border);
}

body.dark-mode summary {
  background: var(--card-bg);
}

body.dark-mode .banner-controls button {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .banner-dots button {
  border-color: rgba(255, 255, 255, 0.3);
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ========== 打印样式 ========== */
@media print {
  header,
  .back-to-top,
  .banner-controls,
  .banner-dots {
    display: none !important;
  }

  .hero-banner {
    height: auto;
    min-height: auto;
    margin-top: 0;
    padding: 40px 0;
  }

  .banner-slide {
    position: relative;
    opacity: 1 !important;
    transform: none !important;
  }

  .section {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
    page-break-inside: avoid;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card,
  .stat-item,
  .data-item {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}