/* ============================================
   杨凌国合跨境贸易有限公司 - 官方网站样式
   Yangling Guohe Cross-border Trade Co., Ltd.
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #1a5e3a;
  --primary-dark: #134a2d;
  --primary-light: #2a7e52;
  --accent: #c8a84e;
  --accent-light: #d4ba6a;
  --bg-cream: #faf8f3;
  --bg-white: #ffffff;
  --text-dark: #1a1a1a;
  --text-body: #444444;
  --text-light: #777777;
  --border: #e8e4dc;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 80px;
}

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

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

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text-body);
  background-color: var(--bg-cream);
  line-height: 1.8;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Noto Serif SC', 'SimSun', serif;
  color: var(--text-dark);
  line-height: 1.4;
  font-weight: 600;
}

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

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

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

ul {
  list-style: none;
}

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

/* ---------- Section Base ---------- */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 2px;
}

.section-header .subtitle {
  font-size: 1rem;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-family: 'Noto Sans SC', sans-serif;
}

.section-header .en-title {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 0.85rem;
  color: var(--text-light);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 4px;
}

/* ---------- Scroll Animation ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* ---------- Header / Navigation ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

.header.transparent {
  background: transparent;
}

.header.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  backdrop-filter: blur(10px);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  font-weight: 700;
}

.header.transparent .logo-icon {
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(4px);
}

.header.scrolled .logo-icon {
  background: var(--primary);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text .cn {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  white-space: nowrap;
}

.logo-text .en {
  font-size: 0.65rem;
  color: var(--text-light);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.header.transparent .logo-text .cn {
  color: #fff;
}

.header.transparent .logo-text .en {
  color: rgba(255,255,255,0.7);
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  padding: 8px 18px;
  font-size: 0.95rem;
  color: var(--text-body);
  border-radius: 6px;
  transition: all var(--transition);
  position: relative;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
  background: rgba(26,94,58,0.06);
}

.header.transparent .nav a {
  color: rgba(255,255,255,0.9);
}

.header.transparent .nav a:hover,
.header.transparent .nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.15);
}

.nav-lang {
  margin-left: 12px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition);
}

.nav-lang:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.header.transparent .nav-lang {
  border-color: rgba(255,255,255,0.4);
  color: rgba(255,255,255,0.8);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

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

.header.transparent .menu-toggle span {
  background: #fff;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Banner ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide .slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 8s ease;
}

.hero-slide.active .slide-bg {
  transform: scale(1);
}

.hero-slide .slide-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(19,74,45,0.85) 0%, rgba(26,94,58,0.6) 50%, rgba(0,0,0,0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  max-width: 800px;
  padding: 0 24px;
}

.hero-content .tag {
  display: inline-block;
  padding: 6px 20px;
  border: 1px solid rgba(200,168,78,0.6);
  border-radius: 30px;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 3px;
  margin-bottom: 24px;
  animation: fadeInDown 0.8s ease 0.3s both;
}

.hero-content h1 {
  font-size: 3.2rem;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 2px;
  animation: fadeInDown 0.8s ease 0.5s both;
}

.hero-content p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 40px;
  line-height: 1.8;
  animation: fadeInDown 0.8s ease 0.7s both;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInDown 0.8s ease 0.9s both;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  font-family: 'Noto Sans SC', sans-serif;
}

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

.btn-primary:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,168,78,0.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.5);
}

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

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

.btn-green:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,94,58,0.3);
}

/* Hero indicators */
.hero-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}

.hero-indicators .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all var(--transition);
}

.hero-indicators .dot.active {
  background: var(--accent);
  transform: scale(1.2);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem;
  letter-spacing: 2px;
}

.hero-scroll-hint .scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
  animation: scrollHint 2s ease infinite;
}

@keyframes scrollHint {
  0% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.5; }
  100% { transform: scaleY(1); opacity: 1; }
}

/* ---------- Antigravity 失重动画 ---------- */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,168,78,0.6) 0%, rgba(200,168,78,0) 70%);
  pointer-events: none;
  will-change: transform, opacity;
}

/* 粒子漂浮轨迹 — 三种变体 */
@keyframes float-particle-1 {
  0%   { transform: translate(0, 0) scale(1);       opacity: 0; }
  10%  { opacity: 1; }
  50%  { transform: translate(80px, -120px) scale(1.2); }
  90%  { opacity: 1; }
  100% { transform: translate(-40px, -250px) scale(0.8); opacity: 0; }
}
@keyframes float-particle-2 {
  0%   { transform: translate(0, 0) scale(1);       opacity: 0; }
  10%  { opacity: 0.8; }
  50%  { transform: translate(-100px, -80px) scale(0.9); }
  90%  { opacity: 0.8; }
  100% { transform: translate(60px, -220px) scale(1.1); opacity: 0; }
}
@keyframes float-particle-3 {
  0%   { transform: translate(0, 0) scale(0.8);     opacity: 0; }
  10%  { opacity: 0.6; }
  50%  { transform: translate(50px, -160px) scale(1.3); }
  90%  { opacity: 0.6; }
  100% { transform: translate(-70px, -300px) scale(1); opacity: 0; }
}

/* 内容元素微浮动动画 */
@keyframes hero-float-slow {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
@keyframes hero-float-mid {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
@keyframes hero-float-fast {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-4px); }
}

/* 给 hero 内容元素附加浮动 — 只在 fadeInDown 完成后生效 */
.hero-content .tag {
  animation: fadeInDown 0.8s ease 0.3s both, hero-float-slow 4s ease-in-out 1.5s infinite;
}
.hero-content h1 {
  animation: fadeInDown 0.8s ease 0.5s both, hero-float-mid 5s ease-in-out 1.8s infinite;
}
.hero-content p {
  animation: fadeInDown 0.8s ease 0.7s both, hero-float-fast 6s ease-in-out 2s infinite;
}
.hero-btns {
  animation: fadeInDown 0.8s ease 0.9s both, hero-float-slow 5.5s ease-in-out 2.2s infinite;
}

/* 视差容器过渡 */
.hero-content {
  transition: transform 0.15s ease-out;
  will-change: transform;
}

/* ---------- Key Numbers ---------- */
.numbers-section {
  padding: 80px 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.number-item {
  padding: 20px;
}

.number-item .icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.number-item .num {
  font-family: 'Noto Serif SC', serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 4px;
}

.number-item .num span {
  font-size: 1.4rem;
  color: var(--accent);
  margin-left: 4px;
}

.number-item .label {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-top: 8px;
}

/* Counter animation */
.number-item .num[data-count] {
  display: inline-block;
}

/* ---------- Growth Highlight Bar ---------- */
.growth-bar {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 40px 0;
  overflow: hidden;
}

.growth-items {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.growth-item {
  text-align: center;
  padding: 8px 16px;
}

.growth-label {
  display: block;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
  letter-spacing: 1px;
}

.growth-value {
  display: block;
  font-family: 'Noto Serif SC', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}

.growth-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .growth-items {
    gap: 16px;
  }
  .growth-divider {
    display: none;
  }
  .growth-item {
    flex: 0 0 calc(50% - 16px);
  }
  .growth-value {
    font-size: 1.2rem;
  }
}

/* ---------- About Preview ---------- */
.about-preview {
  background: var(--bg-cream);
}

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

.about-image {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image .placeholder-img {
  font-size: 6rem;
  opacity: 0.3;
}

.about-image::after {
  content: '';
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 120px;
  height: 120px;
  border: 3px solid var(--accent);
  border-radius: 12px;
  z-index: -1;
}

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

.about-text .en-name {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 8px;
  display: block;
}

.about-text p {
  margin-bottom: 16px;
  line-height: 1.9;
  color: var(--text-body);
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  margin-bottom: 32px;
}

.about-tags .tag {
  padding: 6px 16px;
  background: rgba(26,94,58,0.08);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.85rem;
}

/* ---------- Products Section ---------- */
.products-section {
  background: var(--bg-white);
}

.products-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
}

.products-tabs .tab-btn {
  padding: 10px 28px;
  border: 1px solid var(--border);
  border-radius: 30px;
  background: transparent;
  color: var(--text-body);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'Noto Sans SC', sans-serif;
}

.products-tabs .tab-btn.active,
.products-tabs .tab-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

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

.product-card {
  background: var(--bg-cream);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}

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

.product-card .card-img {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  background: linear-gradient(135deg, #f0ece4, #e8e4dc);
  position: relative;
  overflow: hidden;
}

/* Twemoji 图片替代（兼容 Windows） */
img.emoji-img {
  width: 1em;
  height: 1em;
  max-width: none;
  display: inline;
  flex-shrink: 0;
  object-fit: contain;
}

.product-card .card-img::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.05));
}

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

.product-card .card-body h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.product-card .card-body .origin {
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 4px;
}

.product-card .card-body .origin::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.products-more {
  text-align: center;
  margin-top: 48px;
}

/* ---------- Global Trade Section ---------- */
.global-section {
  background: var(--primary-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.global-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(200,168,78,0.1), transparent 70%);
  border-radius: 50%;
}

.global-section .section-header h2 {
  color: #fff;
}

.global-section .section-header .en-title {
  color: rgba(255,255,255,0.5);
}

.global-map-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto 48px;
  padding: 40px;
}

.map-placeholder {
  background: rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 60px 40px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.1);
}

/* SVG World Map */
.map-svg-container {
  width: 100%;
  margin-bottom: 24px;
  overflow: hidden;
}

.map-svg-container svg {
  width: 100%;
  height: auto;
  display: block;
}

/* 标记悬停效果 */
.map-marker {
  cursor: pointer;
  transition: transform 0.3s ease;
}

.map-marker:hover .marker-star {
  font-size: 18px;
  filter: drop-shadow(0 0 6px rgba(200,168,78,0.8));
}

.map-marker:hover .marker-glow {
  r: 16;
  fill: rgba(200,168,78,0.3);
  transition: all 0.3s ease;
}

.map-marker:hover .marker-label {
  fill: #fff;
  font-size: 10px;
}

.marker-star {
  transition: all 0.3s ease;
}

.marker-label {
  transition: all 0.3s ease;
  font-family: 'Noto Sans SC', 'PingFang SC', sans-serif;
  pointer-events: none;
}

.hq-label {
  font-family: 'Noto Sans SC', 'PingFang SC', sans-serif;
}

/* 杨凌总部脉冲动画 */
.pulse-ring {
  animation: pulseRing 2.5s ease-out infinite;
  transform-origin: center;
}

.pulse-ring-2 {
  animation: pulseRing 2.5s ease-out 0.8s infinite;
  transform-origin: center;
}

@keyframes pulseRing {
  0% {
    r: 14;
    opacity: 0.6;
  }
  100% {
    r: 30;
    opacity: 0;
  }
}

.hq-star {
  animation: hqGlow 2s ease-in-out infinite alternate;
}

@keyframes hqGlow {
  0% { filter: drop-shadow(0 0 4px rgba(200,168,78,0.4)); }
  100% { filter: drop-shadow(0 0 12px rgba(200,168,78,0.9)); }
}

.map-countries {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.map-countries .country-tag {
  padding: 6px 16px;
  background: rgba(200,168,78,0.15);
  border: 1px solid rgba(200,168,78,0.3);
  border-radius: 20px;
  color: var(--accent);
  font-size: 0.85rem;
  transition: all var(--transition);
}

.map-countries .country-tag:hover {
  background: rgba(200,168,78,0.3);
  transform: translateY(-2px);
}

/* Section subheader */
.section-subheader {
  text-align: center;
  margin-top: 60px;
  margin-bottom: 32px;
}

.section-subheader h3 {
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 8px;
}

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

.global-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.global-stats.logistics-grid {
  grid-template-columns: repeat(4, 1fr);
  max-width: 1100px;
}

.global-stats.warehouse-grid {
  grid-template-columns: repeat(3, 1fr);
  max-width: 1000px;
}

.global-stat-item {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
}

.global-stat-item:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-4px);
}

.global-stat-item .stat-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.global-stat-item .stat-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 8px;
}

.global-stat-item .stat-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}

/* ---------- News Section ---------- */
.news-section {
  background: var(--bg-cream);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.news-card {
  background: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition);
  border: 1px solid var(--border);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.news-card .card-img {
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  position: relative;
}

.news-card .card-img .date-badge {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: var(--accent);
  color: #fff;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

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

.news-card .card-body .category {
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.news-card .card-body h4 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .card-body p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .card-body .read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 500;
}

.news-card .card-body .read-more::after {
  content: '\2192';
  transition: transform var(--transition);
}

.news-card:hover .card-body .read-more::after {
  transform: translateX(4px);
}

.news-more {
  text-align: center;
  margin-top: 48px;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 80px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(200,168,78,0.15), transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -80px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(255,255,255,0.05), transparent 70%);
  border-radius: 50%;
}

.cta-section h2 {
  color: #fff;
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ---------- Footer ---------- */
.footer {
  background: #0f0f0f;
  color: rgba(255,255,255,0.6);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand .logo-text .cn {
  color: #fff;
}

.footer-brand .logo-text .en {
  color: rgba(255,255,255,0.4);
}

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

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

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition);
  font-size: 0.9rem;
}

.footer-social a:hover {
  background: var(--accent);
  color: #fff;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 20px;
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 600;
}

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

.footer-col ul li a {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  transition: all var(--transition);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.footer-contact li .icon {
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
}

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

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(26,94,58,0.3);
}

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

.back-to-top:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

/* ---------- Responsive Design ---------- */
@media (max-width: 1024px) {
  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-grid {
    gap: 40px;
  }

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

  .global-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }

  /* Mobile nav */
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    padding: 100px 32px 32px;
    gap: 4px;
    transition: right var(--transition);
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    color: var(--text-body) !important;
    width: 100%;
    padding: 12px 16px;
  }

  .nav a:hover,
  .nav a.active {
    background: rgba(26,94,58,0.06) !important;
    color: var(--primary) !important;
  }

  .nav-lang {
    margin-left: 0;
    margin-top: 12px;
    text-align: center;
    color: var(--text-light) !important;
    border-color: var(--border) !important;
  }

  .mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .mobile-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  /* Hero */
  .hero {
    min-height: 500px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1rem;
  }

  .hero-scroll-hint {
    display: none;
  }

  /* 移动端：粒子减少（JS控制）+ 禁用内容微浮动避免分散注意力 */
  .hero-content .tag,
  .hero-content h1,
  .hero-content p,
  .hero-btns {
    animation: fadeInDown 0.8s ease 0.3s both !important;
  }

  /* Numbers */
  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .number-item .num {
    font-size: 2.2rem;
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-image::after {
    display: none;
  }

  /* Products */
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .products-tabs {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .products-tabs .tab-btn {
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* Global */
  .global-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .map-svg-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .map-svg-container svg {
    min-width: 600px;
  }

  .map-placeholder {
    padding: 24px 16px;
  }

  .marker-label {
    font-size: 7px !important;
  }

  .hq-label {
    font-size: 8px !important;
  }

  /* News */
  .news-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  /* CTA */
  .cta-section h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.6rem;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .numbers-grid {
    grid-template-columns: 1fr 1fr;
  }

  .number-item .num {
    font-size: 1.8rem;
  }

  .products-grid {
    grid-template-columns: 1fr 1fr;
  }

  .logo-text .cn {
    font-size: 0.95rem;
  }

  .logo-text .en {
    font-size: 0.55rem;
  }
}

/* ---------- Page-specific styles (for inner pages) ---------- */
.page-banner {
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding-top: var(--header-height);
}

.page-banner h1 {
  color: #fff;
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.page-banner .breadcrumb {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}

.page-banner .breadcrumb a {
  color: rgba(255,255,255,0.6);
}

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

/* ---------- Loading placeholder ---------- */
.loading-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--text-light);
  font-size: 0.9rem;
}

/* ---------- Language Switcher ---------- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 16px;
  background: rgba(255,255,255,0.12);
  border-radius: 20px;
  padding: 3px 4px;
}
.lang-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: 'Noto Sans SC', sans-serif;
  white-space: nowrap;
}
.lang-btn:hover {
  color: #fff;
  background: rgba(255,255,255,0.15);
}
.lang-btn.active {
  color: var(--primary-dark);
  background: #fff;
  font-weight: 600;
}
.header.scrolled .lang-btn {
  color: rgba(0,0,0,0.5);
}
.header.scrolled .lang-btn:hover {
  color: var(--primary);
  background: rgba(26,94,58,0.08);
}
.header.scrolled .lang-btn.active {
  color: #fff;
  background: var(--primary);
}
.header.scrolled .lang-switcher {
  background: rgba(0,0,0,0.06);
}
.nav-lang { display: none; } /* 隐藏旧占位符 */

@media (max-width: 768px) {
  .lang-switcher {
    margin: 16px auto 0;
    justify-content: center;
  }
  .lang-btn {
    color: rgba(0,0,0,0.5);
  }
  .lang-btn.active {
    color: #fff;
    background: var(--primary);
  }
}