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

:root {
  --primary: #0a4a8a;
  --primary-dark: #07336a;
  --primary-light: #1a6fc4;
  --accent: #e85c1a;
  --accent-light: #f07a40;
  --text-dark: #1a1a2e;
  --text-body: #3d4560;
  --text-light: #6b7280;
  --text-white: #ffffff;
  --bg-white: #ffffff;
  --bg-light: #f5f7fb;
  --bg-dark: #0d1b2a;
  --bg-darker: #060e17;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(10,74,138,0.10);
  --shadow-lg: 0 16px 48px rgba(10,74,138,0.16);
  --radius: 4px;
  --radius-lg: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --navbar-h: 80px;
  --topbar-h: 40px;
}

html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--text-body); background: var(--bg-white); overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
select, input, textarea { font-family: inherit; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 40px; }

/* ===== 顶部信息条 ===== */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  font-size: 12.5px;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 200;
}
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.top-bar-left { display: flex; gap: 24px; align-items: center; }
.top-bar-left span { display: flex; align-items: center; gap: 6px; }
.top-bar-right { display: flex; align-items: center; gap: 16px; }
.social-link { color: rgba(255,255,255,0.7); transition: var(--transition); }
.social-link:hover { color: var(--accent-light); }
.stock-code { font-size: 12px; color: rgba(255,255,255,0.6); }
.lang-btn {
  background: rgba(255,255,255,0.12);
  color: #fff;
  padding: 3px 12px;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: var(--transition);
}
.lang-btn:hover { background: var(--accent); }

/* ===== 主导航 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--navbar-h);
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: var(--transition);
  box-shadow: 0 2px 16px rgba(10,74,138,0.06);
}
.navbar.scrolled {
  box-shadow: var(--shadow);
  height: 68px;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
}

/* Logo */
.logo { display: flex; flex-direction: column; line-height: 1; text-decoration: none; }
.logo-zh { font-size: 22px; font-weight: 900; color: var(--primary); letter-spacing: 2px; }
.logo-en { font-size: 10px; font-weight: 500; color: var(--primary-light); letter-spacing: 3px; margin-top: 3px; }

/* 菜单 */
.nav-menu { display: flex; align-items: center; gap: 0; height: 100%; }
.nav-item { position: relative; height: 100%; display: flex; align-items: center; }
.nav-item > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 18px;
  height: 100%;
  color: var(--text-dark);
  font-size: 14.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
  position: relative;
}
.nav-item > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  right: 50%;
  height: 3px;
  background: var(--accent);
  transition: var(--transition);
}
.nav-item:hover > a { color: var(--primary); }
.nav-item:hover > a::after { left: 18px; right: 18px; }
.arrow { font-size: 10px; transition: var(--transition); }
.nav-item:hover .arrow { transform: rotate(180deg); }

/* 下拉菜单 */
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 160px;
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--primary);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden;
  animation: fadeDown 0.2s ease;
}
.nav-item:hover .dropdown { display: block; }
.dropdown a {
  display: block;
  padding: 11px 20px;
  font-size: 13.5px;
  color: var(--text-body);
  transition: var(--transition);
  border-bottom: 1px solid #f0f4f8;
}
.dropdown a:last-child { border-bottom: none; }
.dropdown a:hover { background: var(--bg-light); color: var(--primary); padding-left: 26px; }

/* Mega Menu */
.mega-menu {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  top: calc(var(--topbar-h) + var(--navbar-h));
  background: #fff;
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--primary);
  z-index: 99;
  padding: 32px 0;
  animation: fadeDown 0.2s ease;
}
.navbar.scrolled ~ .mega-menu,
.nav-item.has-mega:hover .mega-menu {
  top: auto;
}
.nav-item.has-mega:hover .mega-menu { display: block; }
.mega-inner { display: grid; grid-template-columns: repeat(7, 1fr); gap: 16px; }
.mega-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}
.mega-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.mega-item:hover img { transform: scale(1.06); }
.mega-item span {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  padding: 16px 10px 8px;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
}

/* 搜索与右侧操作 */
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-search {
  color: var(--text-body);
  padding: 8px;
  border-radius: 50%;
  transition: var(--transition);
}
.nav-search:hover { background: var(--bg-light); color: var(--primary); }
.btn-contact {
  background: var(--primary);
  color: #fff;
  padding: 9px 22px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-contact:hover { background: var(--accent); transform: translateY(-1px); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.hamburger span { width: 22px; height: 2px; background: var(--text-dark); transition: var(--transition); display: block; }

/* 搜索栏 */
.search-bar {
  display: none;
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 16px 0;
  animation: fadeDown 0.2s ease;
}
.search-bar.active { display: block; }
.search-bar .container { display: flex; gap: 12px; }
.search-bar input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.search-bar input:focus { border-color: var(--primary); }
.search-bar button {
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  transition: var(--transition);
}
.search-bar button:hover { background: var(--primary-dark); }
.close-search { background: transparent !important; color: var(--text-light) !important; padding: 10px 12px !important; font-size: 16px; }

/* ===== Hero 区域 ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease;
}
.hero-slide.active { opacity: 1; }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7,51,106,0.82) 0%, rgba(10,74,138,0.6) 50%, rgba(0,0,0,0.4) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 40px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}
.hero-tagline {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  margin-bottom: 20px;
  animation: slideUp 0.8s ease 0.2s both;
}
.hero-title {
  font-size: clamp(42px, 6vw, 82px);
  font-weight: 900;
  line-height: 1.12;
  color: #fff;
  margin-bottom: 20px;
  animation: slideUp 0.8s ease 0.4s both;
}
.hero-title span { display: block; }
.hero-title span:nth-child(2) { color: var(--accent-light); }
.hero-subtitle {
  font-size: clamp(14px, 1.5vw, 18px);
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
  font-weight: 300;
  letter-spacing: 1px;
  animation: slideUp 0.8s ease 0.6s both;
}
.hero-values {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
  animation: slideUp 0.8s ease 0.7s both;
}
.hero-values span { color: rgba(255,255,255,0.7); font-size: 15px; letter-spacing: 1px; }
.hero-values span:nth-child(2n) { color: rgba(255,255,255,0.35); font-size: 10px; }
.hero-btns {
  display: flex;
  gap: 16px;
  animation: slideUp 0.8s ease 0.8s both;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,92,26,0.4); }
.btn-outline {
  border: 2px solid rgba(255,255,255,0.6);
  color: #fff;
  padding: 13px 32px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.12); }

/* Hero 轮播点 */
.hero-dots {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
}
.dot.active { width: 28px; border-radius: 4px; background: var(--accent); }

/* 向下滚动提示 */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  right: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 3;
  animation: fadeIn 1s ease 1.2s both;
}
.hero-scroll span { font-size: 11px; letter-spacing: 3px; color: rgba(255,255,255,0.5); writing-mode: vertical-rl; text-orientation: mixed; }
.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollDown 1.5s ease-in-out infinite;
}
@keyframes scrollDown { 0%,100% { transform: scaleY(1); transform-origin: top; } 50% { transform: scaleY(0.5); transform-origin: bottom; } }

/* ===== 数据指标 ===== */
.stats-section {
  background: var(--primary);
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 32px 24px;
  border-right: 1px solid rgba(255,255,255,0.12);
  transition: var(--transition);
}
.stat-item:last-child { border-right: none; }
.stat-item:hover { background: rgba(255,255,255,0.06); }
.stat-icon {
  width: 52px;
  height: 52px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
  transition: var(--transition);
}
.stat-item:hover .stat-icon { color: var(--accent-light); }
.stat-icon svg { width: 100%; height: 100%; }
.stat-number {
  font-size: 42px;
  font-weight: 900;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.stat-number em { font-style: normal; font-size: 20px; font-weight: 600; color: var(--accent-light); }
.stat-label { font-size: 13px; color: rgba(255,255,255,0.65); letter-spacing: 0.5px; }

/* ===== 解决方案 ===== */
.solutions-section { padding: 100px 0; background: var(--bg-white); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 16px;
  display: block;
}
.section-tag.light { color: rgba(255,255,255,0.55); }
.section-title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-title.light { color: #fff; }
.section-title em { font-style: normal; color: var(--primary); }
.section-desc { font-size: 15px; color: var(--text-light); max-width: 560px; margin: 0 auto; }
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.solution-card {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
  background: #fff;
}
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card-img {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.solution-card:hover .card-img img { transform: scale(1.06); }
.card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,74,138,0.88);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 24px;
  opacity: 0;
  transition: var(--transition);
  text-align: center;
}
.solution-card:hover .card-overlay { opacity: 1; }
.card-overlay p { color: rgba(255,255,255,0.85); font-size: 14px; line-height: 1.6; margin-bottom: 16px; }
.card-btn {
  background: var(--accent);
  color: #fff;
  padding: 8px 20px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
}
.card-btn:hover { background: var(--accent-light); }
.card-info {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border);
}
.card-num { font-size: 30px; font-weight: 900; color: var(--border); line-height: 1; }
.card-info h3 { font-size: 16px; font-weight: 700; color: var(--text-dark); }
.solution-card:hover .card-num { color: var(--primary-light); }
.section-more { text-align: center; margin-top: 44px; }
.btn-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 12px 32px;
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-more:hover { background: var(--primary); color: #fff; }
.btn-more span { transition: var(--transition); }
.btn-more:hover span { transform: translateX(4px); }

/* ===== 全球布局 ===== */
.global-section {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}
.global-bg {
  position: absolute;
  inset: 0;
  background: var(--bg-dark);
}
.global-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: center;
}
.global-text { color: #fff; }
.global-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: 28px;
}
.global-list { margin-bottom: 36px; }
.global-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.globe-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.global-map { position: relative; }
.world-map { width: 100%; opacity: 0.85; }
.map-stats {
  display: flex;
  gap: 0;
  margin-top: 20px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  overflow: hidden;
}
.map-stat {
  flex: 1;
  text-align: center;
  padding: 16px;
  border-right: 1px solid rgba(255,255,255,0.12);
}
.map-stat:last-child { border-right: none; }
.map-stat span { display: block; font-size: 26px; font-weight: 900; color: var(--accent-light); }
.map-stat p { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 4px; }

/* ===== 新闻动态 ===== */
.news-section { padding: 100px 0; background: var(--bg-light); }
.news-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 24px; }
.news-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.news-img { position: relative; overflow: hidden; }
.news-card.featured .news-img { aspect-ratio: 16/10; }
.news-card:not(.featured) .news-img { aspect-ratio: 16/9; }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-card:hover .news-img img { transform: scale(1.05); }
.news-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--accent);
  color: #fff;
  font-size: 11.5px;
  padding: 4px 12px;
  border-radius: 2px;
  font-weight: 600;
}
.news-content { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-date { font-size: 12px; color: var(--text-light); margin-bottom: 10px; letter-spacing: 0.5px; }
.news-content h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.5;
  margin-bottom: 10px;
  transition: var(--transition);
}
.news-card.featured .news-content h3 { font-size: 20px; }
.news-card:hover h3 { color: var(--primary); }
.news-content p { font-size: 13.5px; color: var(--text-light); line-height: 1.7; flex: 1; }
.news-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 13.5px;
  font-weight: 600;
  margin-top: 16px;
  transition: var(--transition);
}
.news-link:hover { color: var(--accent); gap: 10px; }

/* ===== 服务体系 ===== */
.service-section {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}
.service-bg { position: absolute; inset: 0; }
.service-bg img { width: 100%; height: 100%; object-fit: cover; }
.service-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7,51,106,0.92);
}
.service-inner { position: relative; z-index: 2; }
.section-header.light { text-align: center; margin-bottom: 56px; }
.service-track {
  overflow: hidden;
  position: relative;
  -webkit-mask: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
  mask: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}
.service-items {
  display: flex;
  gap: 24px;
  animation: marquee 28s linear infinite;
  width: max-content;
}
.service-items:hover { animation-play-state: paused; }
.service-item {
  flex-shrink: 0;
  width: 240px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}
.service-item:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.25); transform: translateY(-4px); }
.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}
.service-item:hover .service-icon { color: var(--accent-light); }
.service-icon svg { width: 100%; height: 100%; }
.service-item h4 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.service-item p { font-size: 13px; color: rgba(255,255,255,0.6); line-height: 1.6; margin-bottom: 20px; }
.service-btn {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.4);
  color: rgba(255,255,255,0.8);
  padding: 7px 18px;
  border-radius: var(--radius);
  font-size: 12.5px;
  transition: var(--transition);
}
.service-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== 联系我们 ===== */
.contact-section { padding: 100px 0; background: var(--bg-white); }
.contact-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 60px;
  margin-top: 60px;
}
.contact-info { display: flex; flex-direction: column; gap: 0; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--bg-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}
.contact-icon svg { width: 20px; height: 20px; }
.contact-item h4 { font-size: 13px; color: var(--text-light); margin-bottom: 4px; }
.contact-item p { font-size: 15px; font-weight: 600; color: var(--text-dark); }
.contact-qr { margin-top: 24px; }
.qr-box { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.qr-placeholder {
  width: 100px;
  height: 100px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.qr-box p { font-size: 12px; color: var(--text-light); }
.contact-form { background: var(--bg-light); padding: 40px; border-radius: var(--radius-lg); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full { margin-bottom: 20px; }
.form-group label { font-size: 13.5px; font-weight: 500; color: var(--text-dark); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-dark);
  background: #fff;
  transition: var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10,74,138,0.08); }
.btn-submit {
  background: var(--primary);
  color: #fff;
  padding: 13px 36px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-submit:hover { background: var(--accent); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,92,26,0.35); }

/* ===== 页脚 ===== */
.footer { background: var(--bg-darker); color: rgba(255,255,255,0.65); }
.footer-subscribe {
  background: var(--primary);
  padding: 40px 0;
}
.subscribe-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.subscribe-inner h3 { font-size: 20px; font-weight: 700; color: #fff; white-space: nowrap; }
.subscribe-inner p { font-size: 14px; color: rgba(255,255,255,0.75); white-space: nowrap; }
.subscribe-form { display: flex; gap: 12px; flex: 1; min-width: 280px; }
.subscribe-form input {
  flex: 1;
  padding: 11px 16px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 14px;
  outline: none;
}
.subscribe-form input::placeholder { color: rgba(255,255,255,0.4); }
.subscribe-form input:focus { border-color: rgba(255,255,255,0.7); }
.subscribe-form button {
  background: var(--accent);
  color: #fff;
  padding: 11px 28px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: var(--transition);
}
.subscribe-form button:hover { background: var(--accent-light); }
.footer-main { padding: 64px 0; }
.footer-grid { display: grid; grid-template-columns: 280px 1fr; gap: 60px; }
.footer-logo { display: flex; flex-direction: column; margin-bottom: 12px; }
.footer-logo .logo-zh { font-size: 24px; font-weight: 900; color: #fff; letter-spacing: 2px; }
.footer-logo .logo-en { font-size: 10px; font-weight: 500; color: rgba(255,255,255,0.4); letter-spacing: 3px; margin-top: 3px; }
.footer-slogan { font-size: 13px; color: rgba(255,255,255,0.45); margin-bottom: 20px; letter-spacing: 0.5px; }
.footer-contact { margin-bottom: 20px; }
.footer-contact p { font-size: 13px; margin-bottom: 6px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  padding: 5px 12px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  transition: var(--transition);
}
.footer-social a:hover { color: #fff; border-color: rgba(255,255,255,0.4); }
.footer-links { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.footer-col h5 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: rgba(255,255,255,0.85); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 12.5px; }
.footer-bottom-links { display: flex; align-items: center; gap: 10px; font-size: 12.5px; }
.footer-bottom-links a { transition: var(--transition); }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.85); }
.footer-bottom-links span { color: rgba(255,255,255,0.2); }

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(16px);
  transition: var(--transition);
  z-index: 50;
  pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--accent); transform: translateY(-2px); }
.back-to-top svg { width: 22px; height: 22px; }

/* ===== 动画 ===== */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .mega-inner { grid-template-columns: repeat(4, 1fr); }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .stat-item:nth-child(3) { border-right: none; }
}
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .news-card.featured { grid-column: 1 / -1; }
  .news-card.featured { flex-direction: row; }
  .news-card.featured .news-img { flex: 0 0 55%; aspect-ratio: auto; }
  .global-inner { grid-template-columns: 1fr; }
  .global-map { order: -1; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .top-bar { display: none; }
  .nav-menu { display: none; position: fixed; top: var(--navbar-h); left: 0; right: 0; bottom: 0; background: #fff; flex-direction: column; overflow-y: auto; padding: 16px; align-items: flex-start; gap: 0; height: auto; }
  .nav-menu.open { display: flex; }
  .nav-item { height: auto; width: 100%; }
  .nav-item > a { padding: 12px 8px; height: auto; font-size: 16px; }
  .nav-item > a::after { display: none; }
  .dropdown { position: static; box-shadow: none; border: none; background: var(--bg-light); display: none; }
  .nav-item.open .dropdown { display: block; }
  .mega-menu { position: static; border: none; box-shadow: none; display: none; }
  .nav-item.has-mega.open .mega-menu { display: block; }
  .mega-inner { grid-template-columns: repeat(2, 1fr); }
  .hamburger { display: flex; }
  .btn-contact { display: none; }
  .hero-content { padding: 0 24px; }
  .hero-btns { flex-direction: column; gap: 12px; }
  .stats-section { padding: 40px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(255,255,255,0.12); }
  .stat-item { border-right: none; background: var(--primary); }
  .solutions-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card.featured { flex-direction: column; }
  .news-card.featured .news-img { flex: none; aspect-ratio: 16/9; }
  .form-row { grid-template-columns: 1fr; }
  .subscribe-inner { flex-direction: column; text-align: center; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .hero-scroll { display: none; }
  .back-to-top { bottom: 24px; right: 24px; }
  .solutions-section, .news-section, .service-section, .contact-section { padding: 64px 0; }
  .global-section { padding: 64px 0; }
}
@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr; }
  .mega-inner { grid-template-columns: repeat(2, 1fr); }
  .stat-number { font-size: 32px; }
}