* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: #F4F8FB;
  color: #1A2A33;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 28px; }

/* ============================================================
   顶部导航（透明融入 Banner + 移动端折叠 + 语言常驻右侧）
   ============================================================ */
.top-bar {
  background: linear-gradient(180deg, rgba(6, 20, 35, 0.75) 0%, rgba(6, 20, 35, 0.25) 70%, transparent 100%);
  color: #ffffff;
  padding: 18px 0 14px;
  border-bottom: none;
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  box-shadow: none;
  transition: background 0.35s ease, box-shadow 0.35s ease;
}
.top-bar.scrolled {
  background: rgba(6, 20, 35, 0.92);
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

/* Logo */
.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-link {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(6px);
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  padding: 4px 10px;
}
.logo-img {
  height: 36px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  display: block;
}
.logo-text {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.3px;
  color: #ffffff;
  white-space: nowrap;
}
.logo-text span { color: #B3E0FF; }
.logo-text small {
  font-weight: 400;
  font-size: 0.65rem;
  color: #D0E8F8;
  margin-left: 6px;
  letter-spacing: 0.5px;
}

/* 汉堡按钮：PC 端隐藏 */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background 0.2s;
}
.mobile-menu-toggle:hover {
  background: rgba(255,255,255,0.12);
}

/* 折叠容器（PC端是菜单区域） */
.nav-collapse {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
  justify-content: flex-start;
}

/* 导航菜单 */
.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 28px;
  font-weight: 500;
  font-size: 0.92rem;
  align-items: center;
}
.nav-menu > a {
  transition: 0.2s;
  padding: 6px 2px;
  color: #ffffff;
  border-bottom: 2px solid transparent;
}
.nav-menu > a:hover { color: #B3E0FF; border-bottom-color: #B3E0FF; }

.nav-dropdown { position: relative; }
.nav-dropdown > a {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 2px;
  color: #ffffff;
  border-bottom: 2px solid transparent;
  transition: 0.2s;
}
.nav-dropdown > a:hover { color: #B3E0FF; border-bottom-color: #B3E0FF; }
.nav-dropdown > a i.fa-chevron-down {
  font-size: 0.55rem;
  transition: transform 0.3s ease;
}
.nav-dropdown:hover > a i.fa-chevron-down { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  transform: translateY(6px);
  background: rgba(13, 122, 213, 0.96);
  border-radius: 14px;
  padding: 8px 0;
  min-width: 170px;
  border: 1px solid #4ca6ef50;
  box-shadow: 0 20px 48px -8px rgba(0,40,80,0.3);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 1001;
  backdrop-filter: blur(8px);
}
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -7px;
  left: 20px;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 7px solid #4ca6ef50;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: 8px 22px;
  color: #ffffff;
  font-weight: 400;
  font-size: 0.85rem;
  transition: 0.2s;
  border-left: 3px solid transparent;
}
.dropdown-menu a:hover {
  background: #4ca6ef20;
  color: #B3E0FF;
  border-left-color: #B3E0FF;
}
.dropdown-menu a i {
  margin-right: 10px;
  color: #B3E0FF;
  width: 18px;
  text-align: center;
}

/* 语言区域：PC端在菜单右侧 */
.lang-region {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
  margin-left: auto;
}
.lang-region .divider {
  width: 1px;
  height: 24px;
  background: #4ca6ef;
}
.lang-group {
  display: flex;
  align-items: center;
  gap: 6px;
}
.lang-group .lang-label {
  font-size: 0.7rem;
  color: #D0E8F8;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.lang-group a {
  padding: 4px 12px;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 500;
  color: #ffffff;
  border: 1px solid transparent;
  transition: 0.2s;
}
.lang-group a:hover { color: #B3E0FF; border-color: #4ca6ef; }
.lang-group a.active-lang {
  background: #ffffff;
  color: #0d7ad5;
  border-color: #ffffff;
  font-weight: 600;
}
.region-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: #D0E8F8;
}
.region-info i { color: #B3E0FF; font-size: 0.85rem; }

/* ============================================================
   Hero Banner
   ============================================================ */
.hero {
  background: url('/images/natural-rubber.jpg') center/cover no-repeat;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  margin-top: 0;
  padding-top: 80px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 65%; height: 100%;
  background: linear-gradient(90deg, rgba(6, 20, 35, 0.95) 0%, rgba(6, 20, 35, 0.7) 50%, transparent 100%);
  z-index: 1;
}
.hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.hero-text { max-width: 600px; color: #ffffff; }
.hero-text h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.hero-text p {
  font-size: 1.1rem;
  color: #d0e4f0;
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 500px;
}
.btn-red {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #529138;
  color: #ffffff;
  padding: 14px 40px;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  transition: 0.3s;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 15% 100%, 0 80%);
}
.btn-red:hover {
  background: #4ca6ef;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(13, 122, 213, 0.3);
}
.btn-red i { transition: 0.2s; }
.btn-red:hover i { transform: translateX(5px); }

.hero-circle-wrapper {
  position: relative;
  width: 500px;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 40px;
}
.hero-circle-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(40, 50, 45, 0.4);
  backdrop-filter: blur(4px);
  box-shadow: inset 0 0 80px rgba(0,0,0,0.5), 0 20px 50px rgba(0,0,0,0.4);
  border: 2px solid rgba(255,255,255,0.15);
  z-index: 1;
}
.hero-circle-img {
  position: relative;
  width: 75%;
  height: 75%;
  border-radius: 50%;
  overflow: hidden;
  z-index: 2;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.hero-circle-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

@media (max-width: 1200px) {
  .hero-circle-wrapper { width: 400px; height: 400px; margin-right: 0; }
}
@media (max-width: 992px) {
  .hero::before { width: 100%; background: linear-gradient(90deg, rgba(6, 20, 35, 0.95) 0%, rgba(6, 20, 35, 0.7) 100%); }
  .hero .container { flex-direction: column; justify-content: center; text-align: center; padding-top: 50px; padding-bottom: 50px; }
  .hero-text { margin-bottom: 40px; }
  .hero-text p { margin: 0 auto 30px auto; }
  .hero-circle-wrapper { width: 320px; height: 320px; }
}
@media (max-width: 576px) {
  .hero-circle-wrapper { width: 260px; height: 260px; }
  .hero-text h1 { font-size: 2rem; }
  .btn-red { padding: 12px 30px; font-size: 0.9rem; }
}

/* ============================================================
   通用板块
   ============================================================ */
section { padding: 80px 0; border-bottom: 1px solid #D0E8F8; }
.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: #1A2A33;
}
.section-title i { color: #0d7ad5; margin-right: 10px; font-size: 0.7em; }
.section-sub {
  color: #4d7080;
  max-width: 640px;
  margin-bottom: 44px;
  font-size: 1.05rem;
  border-left: 4px solid #0d7ad5;
  padding-left: 20px;
}

/* ============================================================
   关于
   ============================================================ */
#about {
  background: #ffffff;
  padding: 100px 0;
  overflow: hidden;
  position: relative;
}
#about::before {
  content: '';
  position: absolute;
  top: -15%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(13, 122, 213, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
#about::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(76, 166, 239, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
#about .container { position: relative; z-index: 1; }
#about .container::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 122, 213, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 122, 213, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
}
.about-text { position: relative; }
.about-text .section-title { position: relative; padding-left: 18px; }
.about-text .section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: linear-gradient(180deg, #0d7ad5, #4ca6ef);
  border-radius: 4px;
}
.about-text .section-title i { display: none; }
.about-text p { margin-bottom: 20px; color: #4a5a66; font-size: 1.05rem; line-height: 1.8; }
.about-text p strong { color: #1A2A33; font-size: 1.15rem; }

.cert-badge {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  margin-bottom: 40px;
}
.cert-badge span {
  background: linear-gradient(135deg, #F4F8FB 0%, #E8F3FC 100%);
  color: #0d7ad5;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(13, 122, 213, 0.15);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.cert-badge span::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
  transition: left 0.6s ease;
}
.cert-badge span:hover::after { left: 100%; }
.cert-badge span:hover {
  background: #0d7ad5;
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 10px 24px -6px rgba(13, 122, 213, 0.35);
  border-color: #0d7ad5;
}
.cert-badge span i { margin-right: 8px; }

.about-stats-row {
  display: flex;
  gap: 40px;
  border-top: 1px solid #E8F3FC;
  padding-top: 30px;
  position: relative;
}
.astat-item {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 18px;
}
.astat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: linear-gradient(180deg, #0d7ad5, #4ca6ef);
  border-radius: 3px;
  opacity: 0.6;
}
.astat-num {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #0d7ad5, #4ca6ef);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -1px;
}
.astat-num span {
  font-size: 1rem;
  font-weight: 600;
  margin-left: 4px;
  -webkit-text-fill-color: #1A2A33;
  color: #1A2A33;
}
.astat-label { font-size: 0.9rem; color: #6a7a86; font-weight: 500; }

.about-image { position: relative; }
.about-image::before {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 120px;
  height: 120px;
  border: 2px solid rgba(13, 122, 213, 0.15);
  border-radius: 20px;
  z-index: 0;
  animation: floatBox 6s ease-in-out infinite;
}
.about-image::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, rgba(13, 122, 213, 0.08), rgba(76, 166, 239, 0.12));
  border-radius: 50%;
  z-index: 0;
  animation: floatBox 8s ease-in-out infinite reverse;
}
@keyframes floatBox {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(8px, -8px); }
}
.image-wrapper {
  position: relative;
  width: 100%;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 24px 60px -12px rgba(13, 122, 213, 0.25);
  border: 6px solid #ffffff;
  background: #F4F8FB;
  z-index: 1;
}
.image-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.6) 100%);
  pointer-events: none;
}
.image-wrapper img {
  width: 100%;
  height: 100%;
  min-height: 480px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.about-image:hover .image-wrapper img { transform: scale(1.03); }

.image-badge {
  position: absolute;
  bottom: 3px;
  left: 24px;
  right: 24px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 1px 24px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: #ffffff;
  z-index: 2;
  transition: all 0.35s ease;
}
.about-image:hover .image-badge {
  background: rgba(13, 122, 213, 0.85);
  border-color: rgba(255,255,255,0.5);
  box-shadow: 0 12px 32px rgba(13, 122, 213, 0.4);
}
.image-badge i { font-size: 2rem; color: #4ca6ef; transition: color 0.35s; }
.about-image:hover .image-badge i { color: #ffffff; }
.image-badge strong { display: block; font-size: 1.1rem; font-weight: 700; letter-spacing: 0.5px; }
.image-badge span { font-size: 0.85rem; opacity: 0.9; }

@media (max-width: 992px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image { order: -1; }
  .image-wrapper img { min-height: 300px; }
}
@media (max-width: 600px) {
  #about { padding: 60px 0; }
  .about-stats-row { gap: 20px; }
  .astat-num { font-size: 2rem; }
  .about-text .section-title { padding-left: 14px; }
}

/* ============================================================
   核心产品 + 全球供应链
   ============================================================ */
#products-supply {
  background: #0a2a4a;
  background-image:
    radial-gradient(ellipse at 20% 30%, rgba(13, 122, 213, 0.25) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(76, 166, 239, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(6, 20, 35, 0.6) 0%, transparent 70%);
  border-bottom: 3px solid #4ca6ef;
  position: relative;
  overflow: hidden;
}
#products-supply::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(76, 166, 239, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(76, 166, 239, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}
.ps-wrapper { position: relative; z-index: 1; }
#products-supply .section-title { color: #ffffff; }
#products-supply .section-title i { color: #4ca6ef; }
#products-supply .section-sub { color: #a8c8e0; border-left-color: #4ca6ef; }

.product-grid-ps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-bottom: 60px; }
.product-item-ps {
  text-align: center;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
  border-radius: 20px;
  padding: 28px 16px 22px;
  border: 1px solid rgba(76, 166, 239, 0.20);
  transition: all 0.35s ease;
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
  position: relative;
  overflow: hidden;
}
.product-item-ps::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, #4ca6ef, transparent);
  opacity: 0;
  transition: 0.4s;
}
.product-item-ps:hover::before { opacity: 1; }
.product-item-ps:hover {
  transform: translateY(-8px);
  border-color: #4ca6ef;
  background: rgba(255, 255, 255, 0.10);
  box-shadow: 0 16px 40px -12px rgba(76, 166, 239, 0.35);
}
.product-item-ps img {
  width: 100%;
  max-width: 130px;
  height: auto;
  aspect-ratio: 1/1;
  object-fit: contain;
  display: block;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.08);
  padding: 10px;
  transition: 0.3s;
}
.product-item-ps:hover img { transform: scale(1.04); background: rgba(255,255,255,0.12); }
.product-item-ps .prod-name { font-weight: 700; font-size: 1.05rem; color: #ffffff; display: block; margin-top: 4px; }
.product-item-ps .prod-name a { color: #ffffff; transition: 0.2s; }
.product-item-ps .prod-name a:hover { color: #4ca6ef; }
.product-item-ps .prod-tag {
  display: inline-block;
  background: rgba(76, 166, 239, 0.20);
  color: #a8c8e0;
  padding: 3px 16px;
  border-radius: 40px;
  font-size: 0.7rem;
  font-weight: 500;
  border: 1px solid rgba(76, 166, 239, 0.15);
  margin-top: 10px;
}

.ps-divider { display: flex; align-items: center; gap: 20px; margin: 10px 0 50px; }
.ps-divider .line { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, rgba(76, 166, 239, 0.40), transparent); }
.ps-divider .icon-wrap { color: #4ca6ef; font-size: 1.2rem; opacity: 0.8; }

.supply-stats-ps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 30px; }
.stat-card-ps {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
  border: 1px solid rgba(76, 166, 239, 0.20);
  transition: 0.3s;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.stat-card-ps:hover { transform: translateY(-4px); border-color: #4ca6ef; background: rgba(255, 255, 255, 0.10); box-shadow: 0 8px 24px rgba(76, 166, 239, 0.25); }
.stat-card-ps .num { font-size: 2.4rem; font-weight: 700; color: #4ca6ef; line-height: 1.2; }
.stat-card-ps .num i { font-size: 0.6em; margin-right: 4px; color: #4ca6ef; }
.stat-card-ps .label { color: #a8c8e0; font-size: 0.85rem; letter-spacing: 0.3px; margin-top: 4px; }

@media (max-width: 1024px) { .product-grid-ps { grid-template-columns: repeat(3, 1fr); gap: 16px; } }
@media (max-width: 768px) {
  .product-grid-ps { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .supply-stats-ps { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}
@media (max-width: 480px) {
  .product-grid-ps { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .product-item-ps { padding: 18px 10px 16px; }
  .product-item-ps img { max-width: 100px; }
  .stat-card-ps .num { font-size: 1.8rem; }
}

/* ============================================================
   为什么选择我们
   ============================================================ */
#why-choose { background: #ffffff; padding: 80px 0; border-bottom: 1px solid #D0E8F8; }
.why-header { text-align: center; margin-bottom: 50px; }
.why-header .section-title { margin-bottom: 6px; }
.why-header .section-title i { color: #0d7ad5; }
.why-subtitle { color: #4ca6ef; font-size: 0.85rem; letter-spacing: 4px; text-transform: uppercase; font-weight: 500; }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.why-item {
  background: #F4F8FB;
  border-radius: 24px;
  padding: 32px 30px;
  transition: all 0.4s ease;
  border: 1px solid transparent;
  display: flex;
  align-items: flex-start;
  gap: 20px;
}
.why-item:hover {
  border-color: #0d7ad540;
  box-shadow: 0 12px 40px -12px rgba(13, 122, 213, 0.12);
  transform: translateY(-4px);
  background: #ffffff;
}
.why-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: rgba(13, 122, 213, 0.10);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: #0d7ad5;
  transition: 0.3s;
}
.why-item:hover .why-icon { background: #0d7ad5; color: #ffffff; }
.why-text { flex: 1; display: flex; flex-direction: column; }
.why-text h3 { font-size: 1.2rem; font-weight: 700; color: #1A2A33; margin-bottom: 8px; }
.why-divider { width: 40px; height: 3px; background: #0d7ad5; border-radius: 4px; margin-bottom: 14px; }
.why-text p { color: #405a6a; font-size: 0.95rem; line-height: 1.7; margin: 0; }

/* ============================================================
   新闻动态
   ============================================================ */
#news { background: #ffffff; border-bottom: 1px solid #D0E8F8; }
.news-header { margin-bottom: 44px; }
#news .section-title { color: #1A2A33; }
#news .section-title i { color: #0d7ad5; }
#news .section-sub { color: #4d7080; border-left-color: #0d7ad5; margin-bottom: 0; }

.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.news-card {
  background: #ffffff;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid #D0E8F8;
  transition: all 0.4s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 16px rgba(13,122,213,0.04);
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: #0d7ad5;
  box-shadow: 0 20px 48px -12px rgba(13, 122, 213, 0.20);
}
.news-thumb {
  position: relative;
  display: block;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #E8F3FC;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.news-card:hover .news-thumb img { transform: scale(1.08); }
.news-cat {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(13, 122, 213, 0.92);
  color: #ffffff;
  padding: 5px 14px;
  border-radius: 30px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(13, 122, 213, 0.35);
}
.news-cat i { font-size: 0.65rem; }
.news-body { padding: 24px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.news-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #0d7ad5;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  margin-bottom: 10px;
}
.news-date i { font-size: 0.75rem; }
.news-body h4 { font-size: 1.2rem; font-weight: 700; color: #1A2A33; margin-bottom: 10px; line-height: 1.35; }
.news-body h4 a { color: #1A2A33; transition: 0.2s; }
.news-body h4 a:hover { color: #0d7ad5; }
.news-body p { color: #4d7080; font-size: 0.94rem; line-height: 1.7; margin-bottom: 18px; flex: 1; }
.news-card .read-more {
  color: #0d7ad5;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: 0.2s;
  align-self: flex-start;
}
.news-card .read-more i { transition: 0.2s; }
.news-card .read-more:hover { color: #1A2A33; }
.news-card .read-more:hover i { transform: translateX(4px); }

@media (max-width: 768px) {
  .news-grid { grid-template-columns: 1fr; gap: 20px; }
  .news-thumb { height: 180px; }
  .news-body { padding: 20px 20px 22px; }
  .news-body h4 { font-size: 1.1rem; }
}
@media (max-width: 480px) {
  .news-thumb { height: 160px; }
  .news-body { padding: 18px 16px 20px; }
  .news-body p { font-size: 0.85rem; }
}

/* ============================================================
   产品应用
   ============================================================ */
#application {
  background: url('/images/blog-bg-1.jpg') center/cover no-repeat;
  padding: 80px 0;
  border-bottom: 1px solid #D0E8F8;
  position: relative;
}
#application::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(244, 248, 251, 0.82);
  z-index: 0;
}
#application .container { position: relative; z-index: 1; }
.app-header { text-align: center; margin-bottom: 50px; }
.app-header .section-title { color: #1A2A33; margin-bottom: 6px; }
.app-header .section-title i { color: #0d7ad5; }
.app-subtitle { color: #4ca6ef; font-size: 0.85rem; letter-spacing: 4px; text-transform: uppercase; font-weight: 500; }
.app-wrapper { display: flex; justify-content: center; align-items: center; gap: 40px; position: relative; z-index: 1; }
.app-text-left, .app-text-right { display: flex; flex-direction: column; gap: 30px; flex-shrink: 0; }
.app-text-item { display: flex; flex-direction: column; align-items: flex-start; position: relative; padding: 12px 0; }
.app-text-left .app-text-item { align-items: flex-end; text-align: right; }
.app-text-right .app-text-item { align-items: flex-start; text-align: left; }
.app-text-item h4 { font-size: 1.1rem; font-weight: 700; color: #1A2A33; margin-bottom: 2px; }
.app-text-item p { font-size: 0.8rem; color: #4d7080; text-transform: uppercase; letter-spacing: 1px; }
.app-num {
  font-size: 2.2rem;
  font-weight: 700;
  color: rgba(13, 122, 213, 0.15);
  line-height: 1;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}
.app-text-left .app-num { left: -50px; }
.app-text-right .app-num { right: -50px; }

.app-hexagon { position: relative; width: 420px; height: 420px; flex-shrink: 0; }
.hex-item {
  position: absolute;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid #D0E8F8;
  transition: all 0.4s ease;
  background: #ffffff;
  box-shadow: 0 4px 16px rgba(13,122,213,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
}
.hex-item:hover { border-color: #0d7ad5; transform: scale(1.10); box-shadow: 0 8px 32px rgba(13, 122, 213, 0.15); }
.hex-item a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: #1A2A33;
  font-size: 0.7rem;
  font-weight: 500;
  text-align: center;
  padding: 8px;
}
.hex-item img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 50%;
  margin-bottom: 4px;
  background: #F4F8FB;
  padding: 6px;
  transition: 0.3s;
}
.hex-item:hover img { background: rgba(13, 122, 213, 0.08); }
.hex-item span { font-size: 0.6rem; color: #4d7080; line-height: 1.2; }
.hex-item:hover span { color: #0d7ad5; }
.hex-center { top: 50%; left: 50%; transform: translate(-50%, -50%); width: 120px; height: 120px; border-color: #0d7ad5; background: #E8F3FC; }
.hex-center:hover { transform: translate(-50%, -50%) scale(1.05); }
.hex-center img { width: 56px; height: 56px; background: #ffffff; }
.hex-center span { font-size: 0.7rem; color: #0d7ad5; font-weight: 600; }
.hex-top-left { top: 0; left: 50%; transform: translateX(-50%) translateY(-20px); }
.hex-top-right { top: 0; right: 0; transform: translateX(20px); }
.hex-mid-left { top: 50%; left: 0; transform: translateY(-50%) translateX(-20px); }
.hex-mid-right { top: 50%; right: 0; transform: translateY(-50%) translateX(20px); }
.hex-bottom-left { bottom: 0; left: 0; transform: translateX(20px); }
.hex-bottom-right { bottom: 0; right: 50%; transform: translateX(50%) translateY(20px); }
.hex-top-left:hover { transform: translateX(-50%) translateY(-20px) scale(1.10); }
.hex-top-right:hover { transform: translateX(20px) scale(1.10); }
.hex-mid-left:hover { transform: translateY(-50%) translateX(-20px) scale(1.10); }
.hex-mid-right:hover { transform: translateY(-50%) translateX(20px) scale(1.10); }
.hex-bottom-left:hover { transform: translateX(20px) scale(1.10); }
.hex-bottom-right:hover { transform: translateX(50%) translateY(20px) scale(1.10); }

@media (max-width: 1024px) {
  .app-wrapper { gap: 20px; }
  .app-hexagon { width: 340px; height: 340px; }
  .hex-item { width: 80px; height: 80px; }
  .hex-item img { width: 36px; height: 36px; }
  .hex-center { width: 100px; height: 100px; }
  .hex-center img { width: 46px; height: 46px; }
  .app-num { font-size: 1.6rem; }
  .app-text-left .app-num { left: -38px; }
  .app-text-right .app-num { right: -38px; }
}
@media (max-width: 768px) {
  .app-wrapper { flex-direction: column; gap: 30px; }
  .app-text-left, .app-text-right {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 30px;
  }
  .app-text-left .app-text-item, .app-text-right .app-text-item {
    align-items: center;
    text-align: center;
    padding: 8px 0;
  }
  .app-num { display: none; }
  .app-text-item h4 { font-size: 0.95rem; }
  .app-text-item p { font-size: 0.7rem; }
  .app-hexagon { width: 280px; height: 280px; }
  .hex-item { width: 66px; height: 66px; }
  .hex-item img { width: 30px; height: 30px; }
  .hex-item span { font-size: 0.5rem; }
  .hex-center { width: 82px; height: 82px; }
  .hex-center img { width: 38px; height: 38px; }
  .hex-center span { font-size: 0.6rem; }
  .hex-top-left { transform: translateX(-50%) translateY(-12px); }
  .hex-top-right { transform: translateX(12px); }
  .hex-mid-left { transform: translateY(-50%) translateX(-12px); }
  .hex-mid-right { transform: translateY(-50%) translateX(12px); }
  .hex-bottom-left { transform: translateX(12px); }
  .hex-bottom-right { transform: translateX(50%) translateY(12px); }
  .hex-top-left:hover { transform: translateX(-50%) translateY(-12px) scale(1.10); }
  .hex-top-right:hover { transform: translateX(12px) scale(1.10); }
  .hex-mid-left:hover { transform: translateY(-50%) translateX(-12px) scale(1.10); }
  .hex-mid-right:hover { transform: translateY(-50%) translateX(12px) scale(1.10); }
  .hex-bottom-left:hover { transform: translateX(12px) scale(1.10); }
  .hex-bottom-right:hover { transform: translateX(50%) translateY(12px) scale(1.10); }
}
@media (max-width: 480px) {
  #application { padding: 50px 0; }
  .app-hexagon { width: 220px; height: 220px; }
  .hex-item { width: 54px; height: 54px; }
  .hex-item img { width: 24px; height: 24px; padding: 4px; }
  .hex-item span { font-size: 0.4rem; }
  .hex-center { width: 68px; height: 68px; }
  .hex-center img { width: 32px; height: 32px; }
  .hex-center span { font-size: 0.5rem; }
  .hex-top-left { transform: translateX(-50%) translateY(-8px); }
  .hex-top-right { transform: translateX(8px); }
  .hex-mid-left { transform: translateY(-50%) translateX(-8px); }
  .hex-mid-right { transform: translateY(-50%) translateX(8px); }
  .hex-bottom-left { transform: translateX(8px); }
  .hex-bottom-right { transform: translateX(50%) translateY(8px); }
  .hex-top-left:hover { transform: translateX(-50%) translateY(-8px) scale(1.10); }
  .hex-top-right:hover { transform: translateX(8px) scale(1.10); }
  .hex-mid-left:hover { transform: translateY(-50%) translateX(-8px) scale(1.10); }
  .hex-mid-right:hover { transform: translateY(-50%) translateX(8px) scale(1.10); }
  .hex-bottom-left:hover { transform: translateX(8px) scale(1.10); }
  .hex-bottom-right:hover { transform: translateX(50%) translateY(8px) scale(1.10); }
  .app-text-left, .app-text-right { gap: 10px 20px; }
  .app-text-item h4 { font-size: 0.8rem; }
  .app-text-item p { font-size: 0.6rem; }
}

/* ============================================================
   底部
   ============================================================ */
footer { background: #1A2A33; color: #a8c8b8; padding: 50px 0 30px; border-top: 4px solid #0d7ad5; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 30px; margin-bottom: 30px; }
.footer-grid h4 { color: #ffffff; margin-bottom: 14px; font-weight: 600; }
.footer-grid a { display: block; margin-bottom: 8px; transition: 0.2s; }
.footer-grid a:hover { color: #4ca6ef; }
.footer-bottom {
  border-top: 1px solid #2a3a4a;
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  font-size: 0.9rem;
}
.footer-bottom i { color: #4ca6ef; }

/* ============================================================
   浮动联系
   ============================================================ */
.float-contact { position: fixed; right: 24px; bottom: 120px; display: flex; flex-direction: column; gap: 12px; z-index: 999; }
.float-contact a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #ffffff;
  color: #1A2A33;
  font-size: 1.4rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: all 0.3s ease;
  border: 1px solid #D0E8F8;
  position: relative;
}
.float-contact a:hover {
  transform: scale(1.10);
  background: #0d7ad5;
  color: #ffffff;
  border-color: #0d7ad5;
  box-shadow: 0 8px 28px rgba(13, 122, 213, 0.25);
}
.float-contact a .tooltip {
  position: absolute;
  right: 66px;
  background: #1A2A33;
  color: #ffffff;
  padding: 6px 16px;
  border-radius: 40px;
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  border: 1px solid #0d7ad540;
  pointer-events: none;
}
.float-contact a:hover .tooltip { opacity: 1; visibility: visible; right: 72px; }
.float-contact a .tooltip::after {
  content: '';
  position: absolute;
  right: -8px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 8px solid #1A2A33;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
}
.wechat-qr-wrapper { position: relative; }
.wechat-qr-wrapper .qr-popup {
  position: absolute;
  right: 66px;
  bottom: 0;
  background: #ffffff;
  border-radius: 16px;
  padding: 12px;
  border: 1px solid #D0E8F8;
  box-shadow: 0 12px 32px rgba(0,0,0,0.06);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  width: 140px;
  text-align: center;
  transform: translateY(10px);
}
.wechat-qr-wrapper:hover .qr-popup { opacity: 1; visibility: visible; transform: translateY(0); }
.wechat-qr-wrapper .qr-popup img { width: 100%; border-radius: 8px; display: block; background: #fff; padding: 4px; }
.wechat-qr-wrapper .qr-popup .qr-label { color: #4d7080; font-size: 0.7rem; margin-top: 6px; }
@media (max-width: 768px) {
  .float-contact { right: 16px; bottom: 100px; gap: 10px; }
  .float-contact a { width: 44px; height: 44px; font-size: 1.2rem; }
  .float-contact a .tooltip { display: none; }
  .wechat-qr-wrapper .qr-popup { right: 54px; width: 110px; padding: 8px; }
}

/* ============================================================
   响应式适配：移动端折叠导航 + 语言常驻右上角
   ============================================================ */
@media (max-width: 1024px) {
  .nav-menu { gap: 6px 18px; font-size: 0.85rem; }
  .region-info .region-phone { display: none; }
}
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .region-info .region-location { display: none; }

  /* 顶部导航折叠 + 语言常驻 */
  .top-bar .container {
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
  }
  .logo-area { flex-shrink: 0; }
  .logo-img { height: 30px; }
  .logo-text { font-size: 1.1rem; }
  .logo-text small { display: none; }

  /* 汉堡按钮：第二行靠右 */
  .mobile-menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    order: 2;
  }

  /* 语言区域：常驻右上角，与汉堡按钮并排 */
  .lang-region {
    flex-direction: row;
    align-items: center;
    gap: 6px;
    padding: 0;
    margin-top: 0;
    border-top: none;
    margin-left: 4px;
    order: 3;
  }
  .lang-region .divider { display: none; }
  .region-info { display: none; }
  .lang-group { flex-wrap: nowrap; gap: 4px; }
  .lang-group .lang-label { display: none; }
  .lang-group a {
    padding: 4px 10px;
    font-size: 0.72rem;
    border: 1px solid rgba(255,255,255,0.25);
  }
  .lang-group a.active-lang {
    background: #ffffff;
    color: #0d7ad5;
    border-color: #ffffff;
  }

  /* 折叠菜单：占满下一行 */
  .nav-collapse {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    background: rgba(6, 20, 35, 0.96);
    border-top: 1px solid rgba(255,255,255,0.15);
    padding: 12px 0 16px;
    margin-top: 8px;
    border-radius: 0 0 12px 12px;
    order: 4;
    flex: none;
  }
  .nav-collapse.open { display: flex; }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 8px;
  }
  .nav-menu > a,
  .nav-dropdown > a {
    display: block;
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    color: #ffffff;
    font-size: 0.95rem;
  }
  .nav-menu > a:last-child,
  .nav-dropdown:last-child > a { border-bottom: none; }

  .nav-dropdown { position: static; }
  .nav-dropdown > a i.fa-chevron-down { float: right; transition: transform 0.3s ease; }
  .nav-dropdown.open > a i.fa-chevron-down { transform: rotate(180deg); }
  .dropdown-menu {
    position: static;
    transform: none;
    background: rgba(255,255,255,0.08);
    border: none;
    border-radius: 8px;
    box-shadow: none;
    padding: 4px 0;
    margin: 0 8px 8px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
  }
  .nav-dropdown.open .dropdown-menu { display: block; }
  .dropdown-menu::before { display: none; }
  .dropdown-menu a {
    padding: 10px 20px;
    color: #D0E8F8;
    font-size: 0.88rem;
    border-left: none;
  }
  .dropdown-menu a:hover { background: rgba(255,255,255,0.1); color: #ffffff; }

  .why-grid { grid-template-columns: 1fr; gap: 20px; }
  .why-item { padding: 24px 20px; }
  .why-text h3 { font-size: 1.1rem; }
}
@media (max-width: 600px) {
  .logo-img { height: 26px; }
  .logo-text { font-size: 1rem; }
  .mobile-menu-toggle { font-size: 1.3rem; padding: 4px 8px; }
  .lang-group a { padding: 3px 8px; font-size: 0.68rem; }

  #why-choose { padding: 50px 0; }
  .why-item { padding: 18px 16px; flex-direction: column; align-items: center; text-align: center; }
  .why-divider { margin-left: auto; margin-right: auto; }
  .why-icon { width: 48px; height: 48px; font-size: 1.3rem; }
  .region-info { display: none; }
}

/* ============================================================
   左侧垂直锚点导航
   ============================================================ */
.side-nav {
  position: fixed;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 998;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: rgba(10, 42, 74, 0.88);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  border: 1px solid rgba(76, 166, 239, 0.25);
  box-shadow: 0 8px 32px rgba(0, 20, 40, 0.25);
  transition: all 0.3s ease;
}
.side-nav:hover { background: rgba(10, 42, 74, 0.95); border-color: rgba(76, 166, 239, 0.45); }
.side-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 10px;
  border-radius: 12px;
  color: #a8c8e0;
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  transition: all 0.3s ease;
  position: relative;
}
.side-nav-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(168, 200, 224, 0.45);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.side-nav-label { opacity: 0.85; transition: all 0.3s ease; }
.side-nav-item:hover { color: #ffffff; background: rgba(76, 166, 239, 0.15); }
.side-nav-item:hover .side-nav-dot { background: #4ca6ef; box-shadow: 0 0 10px rgba(76, 166, 239, 0.7); }
.side-nav-item:hover .side-nav-label { opacity: 1; }
.side-nav-item.active { color: #ffffff; background: rgba(76, 166, 239, 0.18); }
.side-nav-item.active .side-nav-dot {
  background: #4ca6ef;
  box-shadow: 0 0 12px rgba(76, 166, 239, 0.9);
  animation: dotBounce 1.8s ease-in-out infinite;
}
.side-nav-item.active .side-nav-label { opacity: 1; color: #4ca6ef; font-weight: 600; }
@keyframes dotBounce {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-3px) scale(1.15); }
}
@media (max-width: 1100px) { .side-nav { display: none; } }