/* ========== 色彩变量（森林+科技配色） ========== */
:root {
  /* 主色：深森林墨绿 */
  --primary: #1b5e4f;
  --primary-light: #26a69a;
  --primary-dark: #0d3b32;
  --primary-darker: #06231d;
  /* 辅助色：科技青绿 */
  --tech: #00bcd4;
  --tech-light: #4dd0e1;
  --tech-dark: #00838f;
  /* 强调色：阳光琥珀金 */
  --accent: #ffa726;
  --accent-light: #ffcc80;
  --accent-dark: #ef6c00;
  /* 背景色 */
  --primary-bg: #e0f2f1;
  --primary-bg2: #b2dfdb;
  --primary-bg3: #f0faf8;
  --warm-bg: #fff8e1;
  /* 文字色 */
  --text-main: #1a2a25;
  --text-sub: #546e63;
  --text-light: #90a49e;
  --border: #cfd8d5;
  --white: #fff;
}

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

/* ========== 通用按钮 ========== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(46,125,50,0.3);
}
.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 40px;
  background: #fff;
  color: var(--primary);
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s;
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}
.btn-outline-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 40px;
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 4px;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s;
}
.btn-outline-white:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}

/* ========== 通用板块标题 ========== */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-sub);
  letter-spacing: 1px;
}
.section-subtitle span {
  color: var(--primary);
  font-weight: 600;
}

/* ========== 滚动进度条 ========== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
  z-index: 9999;
  width: 0;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(46,125,50,0.5);
}

/* ========== 多种入场动画 ========== */
.animate-on-scroll {
  opacity: 0;
  transition: all 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

/* 从下方淡入 */
.animate-up {
  transform: translateY(50px);
}
.animate-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 从上方淡入 */
.animate-down {
  transform: translateY(-50px);
}
.animate-down.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 从左侧滑入 */
.animate-left {
  transform: translateX(-60px);
}
.animate-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 从右侧滑入 */
.animate-right {
  transform: translateX(60px);
}
.animate-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 缩放淡入 */
.animate-zoom {
  transform: scale(0.85);
}
.animate-zoom.visible {
  opacity: 1;
  transform: scale(1);
}

/* 旋转淡入 */
.animate-rotate {
  transform: rotate(-5deg) scale(0.9);
}
.animate-rotate.visible {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* 翻转进入 */
.animate-flip {
  transform: perspective(800px) rotateY(30deg);
}
.animate-flip.visible {
  opacity: 1;
  transform: perspective(800px) rotateY(0);
}

/* 兼容旧类名 */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Stagger 延迟（子元素依次入场） ========== */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }

/* 手动延迟类 */
.delay-1 { transition-delay: 0.1s !important; }
.delay-2 { transition-delay: 0.2s !important; }
.delay-3 { transition-delay: 0.3s !important; }
.delay-4 { transition-delay: 0.4s !important; }
.delay-5 { transition-delay: 0.5s !important; }
.delay-6 { transition-delay: 0.6s !important; }

/* ========== 持续浮动动画 ========== */
.float-animation {
  animation: floatY 3s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.float-slow {
  animation: floatY 5s ease-in-out infinite;
}

/* 脉冲发光 */
.pulse-glow {
  animation: pulseGlow 2s ease-in-out infinite;
}
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(27,94,79,0.4); }
  50% { box-shadow: 0 0 0 15px rgba(27,94,79,0); }
}

/* 渐变文字流动 */
.gradient-text-flow {
  background: linear-gradient(90deg, var(--primary-dark), var(--primary), var(--tech), var(--primary-light), var(--primary));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientFlow 5s ease infinite;
}
@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ========== 3D 卡片倾斜 ========== */
.tilt-card {
  transform-style: preserve-3d;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  perspective: 1000px;
}
.tilt-card:hover {
  box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}

/* ========== 图片揭示动画（从左到右扫光） ========== */
.image-reveal {
  position: relative;
  overflow: hidden;
}
.image-reveal::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.8s ease;
}
.image-reveal:hover::after {
  left: 100%;
}

/* ========== 下划线展开动画 ========== */
.underline-expand {
  position: relative;
}
.underline-expand::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: all 0.4s ease;
  transform: translateX(-50%);
}
.underline-expand:hover::after {
  width: 100%;
}

/* ========== 视差容器 ========== */
.parallax-container {
  overflow: hidden;
  position: relative;
}
.parallax-bg {
  will-change: transform;
  transition: transform 0.1s linear;
}

/* ========== 数字跳动增强 ========== */
.count-up {
  font-variant-numeric: tabular-nums;
}

/* ========== 滚动时板块标题装饰线动画 ========== */
.section-title-animate {
  position: relative;
  display: inline-block;
}
.section-title-animate::before,
.section-title-animate::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.8s ease 0.3s;
}
.section-title-animate::before { right: 100%; margin-right: 20px; }
.section-title-animate::after { left: 100%; margin-left: 20px; }
.visible .section-title-animate::before,
.visible .section-title-animate::after {
  width: 60px;
}

/* ========== 渐变背景工具类 ========== */
.gradient-bg-green {
  background: linear-gradient(135deg, #e0f2f1 0%, #f0faf8 50%, #fff 100%);
}
.gradient-bg-soft {
  background: linear-gradient(180deg, #fff 0%, #e0f2f1 100%);
}
.gradient-bg-warm {
  background: linear-gradient(135deg, #fff8e1 0%, #fffde7 50%, #fff 100%);
}
.gradient-bg-deep {
  background: linear-gradient(135deg, #0d3b32 0%, #1b5e4f 50%, #00838f 100%);
}
.gradient-text {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--tech));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-warm {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-border {
  position: relative;
  background: #fff;
}
.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(135deg, var(--primary-light), transparent, var(--primary));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.gradient-border:hover::before {
  opacity: 1;
}

/* ========== 持续呼吸/浮动动画 ========== */
.breath {
  animation: breath 3s ease-in-out infinite;
}
@keyframes breath {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.breath-glow {
  animation: breathGlow 2.5s ease-in-out infinite;
}
@keyframes breathGlow {
  0%, 100% { text-shadow: 0 0 8px rgba(255,255,255,0.3); }
  50% { text-shadow: 0 0 25px rgba(165,214,167,0.8), 0 0 50px rgba(102,187,106,0.4); }
}

.slow-spin {
  animation: slowSpin 20s linear infinite;
}
@keyframes slowSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.float-delayed {
  animation: floatY 4s ease-in-out infinite;
  animation-delay: 1s;
}

/* ========== 渐变流动背景 ========== */
.gradient-flow-bg {
  background: linear-gradient(-45deg, #0d3b32, #1b5e4f, #00838f, #26a69a, #1b5e4f);
  background-size: 400% 400%;
  animation: gradientFlowBg 12s ease infinite;
}
@keyframes gradientFlowBg {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ========== 光效装饰 ========== */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  pointer-events: none;
  animation: orbFloat 8s ease-in-out infinite;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.1); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ========== Ken Burns 背景缩放 ========== */
.ken-burns {
  animation: kenBurns 20s ease-in-out infinite alternate;
}
@keyframes kenBurns {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.12) translate(-1%, -1%); }
}

/* ========== 图片揭示遮罩 ========== */
.reveal-mask {
  position: relative;
  overflow: hidden;
}
.reveal-mask::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(46,125,50,0.1), rgba(27,94,32,0.05));
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.5s;
}
.reveal-mask:hover::before {
  opacity: 0;
}

/* ========== 选中文字样式 ========== */
::selection {
  background: rgba(38,166,154,0.2);
  color: var(--primary-dark);
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #e0f2f1;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--tech), var(--primary));
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* ========== 粒子背景容器 ========== */
.particles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.particle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(38,166,154,0.6), transparent);
  animation: particleFloat linear infinite;
}
@keyframes particleFloat {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-10vh) scale(1);
    opacity: 0;
  }
}

/* ========== 板块间渐变分隔 ========== */
.section-divider {
  height: 80px;
  background: linear-gradient(180deg, transparent, var(--primary-bg), transparent);
  opacity: 0.5;
}

/* ========== 右侧悬浮工具 ========== */
.float-tools {
  position: fixed;
  right: 24px;
  bottom: 80px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.float-tool {
  width: 48px;
  height: 48px;
  background: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  cursor: pointer;
  transition: all 0.3s;
  font-size: 20px;
  color: var(--primary);
}
.float-tool:hover {
  background: var(--primary);
  color: #fff;
  transform: scale(1.1);
}
.back-to-top {
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

/* ========== 响应式 ========== */
@media (max-width: 968px) {
  .main-menu { display: none; }
  .mobile-menu-btn { display: block; }
  .hero-title { font-size: 36px; }
  .hero-data { gap: 30px; }
  .hero-data-num { font-size: 32px; }
  .about-wrap { grid-template-columns: 1fr; gap: 40px; }
  .products-grid { grid-template-columns: 1fr; }
  .solution-slide { grid-template-columns: 1fr; padding: 40px 24px; gap: 30px; }
  .solution-nav { grid-template-columns: repeat(3, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .news-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .data-bar-inner { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
}
@media (max-width: 576px) {
  .hero-title { font-size: 28px; letter-spacing: 2px; }
  .hero-subtitle { font-size: 15px; }
  .hero-data { flex-direction: column; gap: 20px; }
  .solution-nav { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-btns { flex-direction: column; align-items: center; }
  .about-features { grid-template-columns: 1fr; }
}