/* ========================================
   德菲世纪仪表(.com.cn) — 环保监测站样式
   配色: 深蓝科技 / 青绿环保 / 白底卡片
   ======================================== */

/* ---------- @font-face ---------- */
@font-face {
  font-family: 'Inter';
  src: url('../fonts/Inter-Regular.woff2') format('woff2');
  font-weight: 300 800;
  font-display: swap;
}

/* ---------- SVG Icon Sprite ---------- */
.icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  fill: currentColor;
  stroke: currentColor;
  flex-shrink: 0;
}
/* 当 icon 内部使用 stroke 路径时，去除 fill */
.icon-stroke-only {
  fill: none;
}

/* ---------- CSS Variables ---------- */
:root {
  --env-primary: #0a1628;      /* 深蓝 */
  --env-primary-mid: #122640;  /* 中蓝 */
  --env-teal: #00b894;         /* 青绿-环保主色 */
  --env-teal-light: #55efc4;   /* 青绿浅 */
  --env-teal-dark: #00a381;    /* 青绿深 */
  --env-blue: #0984e3;         /* 亮蓝 */
  --env-blue-light: #74b9ff;   /* 浅蓝 */
  --env-accent: #fdcb6e;       /* 金黄点缀 */
  --env-white: #ffffff;
  --env-light: #f8fafc;        /* 近白背景 */
  --env-gray-50: #f1f5f9;
  --env-gray-100: #e2e8f0;
  --env-gray-200: #cbd5e1;
  --env-gray-300: #94a3b8;
  --env-gray-400: #64748b;
  --env-gray-500: #475569;
  --env-gray-600: #334155;
  --env-gray-700: #1e293b;
  --env-gray-800: #0f172a;
  --env-gray-900: #020617;
  --env-gradient-hero: linear-gradient(135deg, #0a1628 0%, #122640 40%, #0a3d62 100%);
  --env-gradient-teal: linear-gradient(135deg, #00b894 0%, #00cec9 50%, #0984e3 100%);
  --env-gradient-card: linear-gradient(180deg, rgba(0,184,148,0.08) 0%, rgba(9,132,227,0.04) 100%);
  --env-radius-sm: 8px;
  --env-radius: 12px;
  --env-radius-lg: 20px;
  --env-radius-xl: 28px;
  --env-shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --env-shadow: 0 4px 20px rgba(0,0,0,0.08);
  --env-shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --env-shadow-teal: 0 8px 30px rgba(0,184,148,0.15);
  --env-font-sans: Inter, "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  --env-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--env-font-sans);
  color: var(--env-gray-700);
  background: var(--env-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--env-teal); text-decoration: none; transition: color var(--env-transition); }
a:hover { color: var(--env-teal-dark); }
img { max-width: 100%; height: auto; display: block; }
h1,h2,h3,h4 { line-height: 1.3; color: var(--env-gray-800); }

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

/* ---------- HEADER ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--env-transition);
}
.site-header.scrolled {
  border-bottom-color: var(--env-gray-100);
  box-shadow: var(--env-shadow-sm);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--env-gray-800); font-weight: 700; font-size: 18px;
}
.logo:hover { color: var(--env-teal); }
.logo-sub { font-size: 11px; color: var(--env-gray-400); font-weight: 400; letter-spacing: 1px; }
.logo-icon { color: var(--env-teal); display: flex; }
.main-nav { display: flex; gap: 32px; align-items: center; }
.main-nav a {
  color: var(--env-gray-600); font-size: 14px; font-weight: 500;
  padding: 4px 0; position: relative;
}
.main-nav a:hover { color: var(--env-teal); }
.main-nav a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--env-teal);
  transform: scaleX(0); transition: transform var(--env-transition);
}
.main-nav a:hover::after { transform: scaleX(1); }
.nav-btn {
  background: var(--env-teal); color: var(--env-white) !important;
  padding: 8px 36px; border-radius: var(--env-radius-sm);
  font-weight: 600 !important;
}
.nav-btn:hover { background: var(--env-teal-dark); color: var(--env-white) !important; }
.nav-btn::after { display: none; }
.menu-toggle {
  display: none; background: none; border: none;
  color: var(--env-gray-600); cursor: pointer; padding: 20px;
}

/* ---------- HERO ---------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: var(--env-gradient-hero);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,184,148,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,184,148,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute; border-radius: 50%; filter: blur(80px);
}
.glow-1 {
  width: 500px; height: 500px;
  background: rgba(0,184,148,0.15);
  top: -10%; right: 10%;
  animation: glowFloat 8s ease-in-out infinite;
}
.glow-2 {
  width: 400px; height: 400px;
  background: rgba(9,132,227,0.12);
  bottom: -5%; left: 5%;
  animation: glowFloat 10s ease-in-out infinite reverse;
}
@keyframes glowFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px;
  align-items: center; width: 100%;
}
.hero-text { max-width: 600px; }
.hero-badge {
  display: inline-block;
  background: rgba(0,184,148,0.15); color: var(--env-teal-light);
  padding: 6px 16px; border-radius: var(--env-radius-sm);
  font-size: 13px; font-weight: 600; letter-spacing: 0.5px;
  margin-bottom: 24px; border: 1px solid rgba(0,184,148,0.3);
}
.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  color: var(--env-white); font-weight: 800;
  margin-bottom: 20px; letter-spacing: -1px;
}
.hero-title .accent { color: var(--env-teal-light); }
.hero-desc {
  font-size: 18px; color: var(--env-gray-300);
  max-width: 560px; margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; margin-bottom: 48px; flex-wrap: wrap; }
.hero-visual {
  display: flex; justify-content: center; align-items: center;
  position: relative;
}
.hero-image-frame {
  position: relative;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--env-radius-xl);
  padding: 24px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.25), 0 0 60px rgba(0,184,148,0.1);
  animation: floatDevice 6s ease-in-out infinite;
}
.hero-image-frame img {
  width: 100%; max-width: 360px; height: auto;
  border-radius: var(--env-radius-lg);
  background: var(--env-white);
  display: block;
}
.hero-image-tag {
  position: absolute; bottom: -16px; left: 50%; transform: translateX(-50%);
  background: var(--env-teal); color: var(--env-white);
  padding: 10px 20px; border-radius: var(--env-radius);
  text-align: center; min-width: 200px;
  box-shadow: 0 8px 24px rgba(0,184,148,0.3);
}
.hero-image-tag span { display: block; font-weight: 800; font-size: 15px; }
.hero-image-tag small { display: block; font-size: 12px; opacity: 0.9; }
@keyframes floatDevice {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.hero-metrics {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  max-width: 500px;
}
.metric {
  text-align: center;
}
.metric-num {
  font-size: 32px; font-weight: 800; color: var(--env-teal-light);
  display: inline;
}
.metric-unit {
  font-size: 16px; font-weight: 600; color: var(--env-teal-light);
}
.metric-label {
  font-size: 12px; color: var(--env-gray-400);
  display: block; margin-top: 4px;
}

/* ---------- SOLUTIONS ---------- */
.solution-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.solution-card {
  background: var(--env-white); border-radius: var(--env-radius-lg);
  padding: 32px; position: relative;
  border: 1px solid var(--env-gray-100);
  transition: all var(--env-transition);
  overflow: hidden;
}
.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--env-shadow);
  border-color: var(--env-teal);
}
.solution-img {
  position: absolute; top: 0; right: 0; width: 180px; height: 120px;
  overflow: hidden; border-radius: 0 0 0 var(--env-radius-lg);
  opacity: 0.85;
}
.solution-img img {
  width: 100%; height: 100%; object-fit: contain;
  padding: 8px;
  filter: grayscale(20%);
  transition: all var(--env-transition);
}
.solution-card:hover .solution-img img {
  filter: grayscale(0%);
  transform: scale(1.05);
}
.solution-icon {
  width: 48px; height: 48px;
  background: var(--env-gradient-card);
  border-radius: var(--env-radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--env-teal); margin-bottom: 16px;
  position: relative; z-index: 1;
  overflow: hidden;
}
.solution-icon svg {
  width: 48px; height: 48px;
  transform: scale(2);
}
.solution-card h3 {
  font-size: 20px; font-weight: 700; margin-bottom: 12px;
  position: relative; z-index: 1;
}
.solution-card p {
  font-size: 14px; color: var(--env-gray-500); line-height: 1.7;
  margin-bottom: 16px; position: relative; z-index: 1;
  max-width: 70%;
}
.solution-tags {
  display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap;
  position: relative; z-index: 1;
}
.solution-tags span {
  background: var(--env-gray-50); color: var(--env-gray-600);
  padding: 4px 12px; border-radius: 20px;
  font-size: 12px; font-weight: 500;
}
.solution-link {
  font-size: 14px; font-weight: 600;
  color: var(--env-teal);
  position: relative; z-index: 1;
}
.solution-title-link {
  color: inherit;
  text-decoration: none;
  transition: color var(--env-transition);
}
.solution-title-link:hover {
  color: var(--env-teal);
}

/* ---------- PRODUCTS ---------- */
.product-category { margin-bottom: 48px; }
.cat-title {
  font-size: 18px; font-weight: 700;
  margin-bottom: 24px; display: flex; align-items: center; gap: 12px;
}
.cat-badge {
  display: inline-block; padding: 4px 12px;
  border-radius: 20px; font-size: 12px; font-weight: 700;
  letter-spacing: 1px;
}
.cat-badge.self { background: var(--env-teal); color: var(--env-white); }
.cat-badge.agent { background: var(--env-blue); color: var(--env-white); }

.product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.product-card {
  background: var(--env-white); border-radius: var(--env-radius-lg);
  padding: 0 0 28px; position: relative;
  border: 1px solid var(--env-gray-100);
  transition: all var(--env-transition);
  overflow: hidden;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--env-shadow);
}
.product-card.featured {
  border-color: var(--env-teal);
  background: linear-gradient(180deg, rgba(0,184,148,0.04) 0%, var(--env-white) 100%);
}
.product-badge {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  background: var(--env-teal); color: var(--env-white);
  padding: 4px 12px; border-radius: 20px;
  font-size: 11px; font-weight: 700;
}
.product-img {
  height: 220px;
  background: linear-gradient(180deg, var(--env-gray-50) 0%, var(--env-white) 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--env-gray-100);
  overflow: hidden;
}
.product-img img {
  max-height: 100%; max-width: 100%;
  object-fit: contain;
  transition: transform var(--env-transition);
}
.product-card:hover .product-img img {
  transform: scale(1.08);
}
.product-card h4, .product-card .product-name, .product-card .product-desc, .product-card .product-specs {
  padding: 0 28px;
}
.product-card h4 {
  font-size: 22px; font-weight: 800; margin-bottom: 4px;
  color: var(--env-gray-800);
}
.product-name {
  font-size: 14px; color: var(--env-teal); font-weight: 600;
  margin-bottom: 12px;
}
.product-desc {
  font-size: 13px; color: var(--env-gray-500); line-height: 1.7;
  margin-bottom: 16px;
}
.product-specs {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.product-specs span {
  background: var(--env-gray-50); color: var(--env-gray-600);
  padding: 4px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 600;
}

/* Brand grid */
.brand-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.brand-card {
  background: var(--env-white); border-radius: var(--env-radius);
  padding: 24px; border: 1px solid var(--env-gray-100);
  transition: all var(--env-transition);
  display: flex; flex-direction: column;
}
.brand-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--env-shadow-sm);
  border-color: var(--env-blue-light);
}
.brand-logo-img {
  height: 48px; margin-bottom: 12px;
  display: flex; align-items: center; justify-content: flex-start;
}
.brand-logo-img img {
  max-height: 40px; max-width: 120px;
  object-fit: contain;
  filter: grayscale(30%);
  transition: all var(--env-transition);
}
.brand-card:hover .brand-logo-img img {
  filter: grayscale(0%);
}
.brand-name {
  font-size: 13px; color: var(--env-gray-400); font-weight: 500;
  margin-bottom: 12px;
}
.brand-card p {
  font-size: 13px; color: var(--env-gray-600); line-height: 1.6;
}

/* ---------- SECTIONS (通用) ---------- */
.section {
  padding: 80px 0;
}
.section-header {
  text-align: center; margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  color: var(--env-teal); background: rgba(0,184,148,0.1);
  padding: 6px 16px; border-radius: 20px;
  margin-bottom: 16px;
}
.section-title {
  font-size: 36px; font-weight: 800; color: var(--env-gray-800);
  margin-bottom: 16px; letter-spacing: -0.5px;
}
.section-desc {
  font-size: 16px; color: var(--env-gray-400); max-width: 560px;
  margin: 0 auto; line-height: 1.6;
}

/* ---------- BUTTONS ---------- */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--env-teal); color: var(--env-white);
  padding: 12px 32px; border-radius: var(--env-radius-sm);
  font-weight: 600; font-size: 14px;
  transition: all var(--env-transition);
  box-shadow: 0 4px 16px rgba(0,184,148,0.25);
}
.btn-primary:hover {
  background: var(--env-teal-dark); color: var(--env-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,184,148,0.35);
}
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.1); color: var(--env-white);
  padding: 12px 32px; border-radius: var(--env-radius-sm);
  font-weight: 600; font-size: 14px;
  border: 1px solid rgba(255,255,255,0.2);
  transition: all var(--env-transition);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.35);
}
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--env-teal);
  padding: 12px 32px; border-radius: var(--env-radius-sm);
  font-weight: 600; font-size: 14px;
  border: 1px solid var(--env-teal);
  transition: all var(--env-transition);
}
.btn-outline:hover {
  background: var(--env-teal); color: var(--env-white);
}

/* ---------- TECH RESOURCES ---------- */
.tech {
  background: var(--env-primary);
  position: relative; overflow: hidden;
}
.tech::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,184,148,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,184,148,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.tech .section-tag {
  background: rgba(0,184,148,0.2); color: var(--env-teal-light);
}
.tech .section-title { color: var(--env-white); }
.tech .section-desc { color: var(--env-gray-300); }
.tech-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  position: relative; z-index: 1;
}
.tech-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--env-radius);
  padding: 28px;
  transition: all var(--env-transition);
  display: flex; flex-direction: column;
}
.tech-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--env-teal);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,184,148,0.15);
}
.tech-type {
  display: inline-block;
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  color: var(--env-teal-light); background: rgba(0,184,148,0.2);
  padding: 4px 12px; border-radius: 20px;
  margin-bottom: 16px;
}
.tech-card h4 {
  color: var(--env-white); font-size: 15px; font-weight: 700;
  margin-bottom: 12px; line-height: 1.5;
}
.tech-card p {
  color: var(--env-gray-300); font-size: 13px; line-height: 1.7;
  margin-bottom: 20px; flex: 1;
}
.tech-download {
  font-size: 13px; font-weight: 600; color: var(--env-teal-light);
  display: inline-flex; align-items: center; gap: 6px;
  transition: all var(--env-transition);
}
.tech-download:hover { color: var(--env-teal); }
.tech-more {
  text-align: center; margin-top: 32px;
  position: relative; z-index: 1;
}
.tech .btn-outline {
  color: var(--env-teal-light); border-color: var(--env-teal-light);
}
.tech .btn-outline:hover {
  background: var(--env-teal); color: var(--env-white);
}

/* ---------- INDUSTRIES ---------- */
.industries {
  margin-top: 48px; padding-top: 48px;
  border-top: 1px solid var(--env-gray-100);
  text-align: center;
}
.ind-title {
  font-size: 18px; font-weight: 700; color: var(--env-gray-700);
  margin-bottom: 24px;
}
.ind-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.ind-tag {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--env-gray-50);
  border: 1px solid var(--env-gray-100);
  border-radius: var(--env-radius);
  padding: 14px 16px;
  font-size: 14px; font-weight: 600; color: var(--env-gray-600);
  transition: all var(--env-transition);
  cursor: default;
}
.ind-tag svg {
  color: var(--env-gray-400);
  transition: color var(--env-transition);
}
.ind-tag:hover {
  background: rgba(0,184,148,0.08);
  border-color: var(--env-teal);
  color: var(--env-teal);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,184,148,0.1);
}
.ind-tag:hover svg { color: var(--env-teal); }
.ind-desc {
  font-size: 14px; color: var(--env-gray-400); margin-bottom: 24px;
}
.company-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: start;
}
.intro-text {
  font-size: 15px; line-height: 1.8; color: var(--env-gray-600);
  margin-bottom: 16px;
}
.intro-text strong { color: var(--env-teal); }

.company-gallery {
  display: grid; gap: 16px;
}
.gallery-main {
  border-radius: var(--env-radius-lg); overflow: hidden;
  border: 1px solid var(--env-gray-100);
  box-shadow: var(--env-shadow-sm);
  height: 220px;
}
.gallery-main img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--env-transition);
}
.gallery-main:hover img { transform: scale(1.03); }
.gallery-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.gallery-grid img {
  width: 100%; height: 120px; object-fit: cover;
  border-radius: var(--env-radius); border: 1px solid var(--env-gray-100);
  transition: all var(--env-transition);
}
.gallery-grid img:hover {
  transform: translateY(-2px);
  box-shadow: var(--env-shadow-sm);
  border-color: var(--env-teal);
}
/* ---------- NEWS / 新闻资讯 ---------- */
.news {
  background: var(--env-light);
}
.news-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.news-card {
  background: var(--env-white); border-radius: var(--env-radius-lg);
  overflow: hidden; border: 1px solid var(--env-gray-100);
  transition: all var(--env-transition);
  display: flex; flex-direction: column;
  position: relative;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--env-shadow);
  border-color: var(--env-teal);
}
.news-card.featured {
  border-color: var(--env-teal);
  background: linear-gradient(180deg, rgba(0,184,148,0.04) 0%, var(--env-white) 100%);
}
.news-badge {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  padding: 4px 12px; border-radius: 20px;
  font-size: 11px; font-weight: 700;
  background: var(--env-teal); color: var(--env-white);
}
.news-card.featured .news-badge {
  background: var(--env-accent); color: var(--env-gray-800);
}
.news-img {
  height: 180px; overflow: hidden;
  position: relative;
}
.news-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--env-transition);
}
.news-card:hover .news-img img {
  transform: scale(1.05);
}
.news-body {
  padding: 24px;
  flex: 1;
  display: flex; flex-direction: column;
}
.news-body h4 {
  font-size: 16px; font-weight: 700; margin-bottom: 12px;
  color: var(--env-gray-800); line-height: 1.4;
}
.news-body p {
  font-size: 13px; color: var(--env-gray-500); line-height: 1.7;
  margin-bottom: 16px; flex: 1;
}
.news-meta {
  display: flex; justify-content: space-between; align-items: center;
}
.news-date {
  font-size: 12px; color: var(--env-gray-400);
  background: var(--env-gray-50); padding: 4px 10px; border-radius: 6px;
}
.news-link {
  font-size: 13px; font-weight: 600; color: var(--env-teal);
}
.news-link:hover { color: var(--env-teal-dark); }
.news-more {
  text-align: center; margin-top: 32px;
}

/* ---------- FOOTER ---------- */
.footer-main {
  background: var(--env-gray-800);
  padding: 48px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px;
}
.footer-col { color: var(--env-gray-300); }
.footer-col h4 {
  color: var(--env-white); font-size: 15px; font-weight: 700;
  margin-bottom: 20px;
  position: relative; padding-bottom: 12px;
}
.footer-col h4::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 32px; height: 2px; background: var(--env-teal);
  border-radius: 1px;
}
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--env-white); font-size: 18px; font-weight: 700;
  margin-bottom: 16px;
}
.footer-logo .logo-icon { color: var(--env-teal); display: flex; }
.footer-desc {
  font-size: 14px; color: var(--env-gray-400); line-height: 1.8;
  margin-bottom: 12px;
}
.footer-cert {
  font-size: 12px; color: var(--env-teal); font-weight: 600;
  letter-spacing: 0.5px;
}
.footer-col a {
  display: block; color: var(--env-gray-400); font-size: 13px;
  padding: 6px 0; transition: color var(--env-transition);
}
.footer-col a:hover { color: var(--env-teal-light); padding-left: 4px; }
.footer-col p { font-size: 13px; color: var(--env-gray-400); margin-bottom: 8px; }
.contact-col p { font-size: 14px; }
.btn-contact {
  display: inline-block;
  background: var(--env-teal); color: var(--env-white);
  padding: 10px 24px; border-radius: var(--env-radius-sm);
  font-weight: 600; font-size: 13px;
  margin-top: 12px;
  transition: all var(--env-transition);
}
.btn-contact:hover { background: var(--env-teal-dark); color: var(--env-white); }
.footer-bottom {
  background: var(--env-gray-900); padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-bar {
  display: flex; justify-content: space-between;
  font-size: 12px; color: var(--env-gray-500);
}

/* ---------- SCROLL REVEAL ---------- */
.scroll-reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.scroll-reveal.visible {
  opacity: 1; transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .ind-grid { grid-template-columns: repeat(3, 1fr); }
  .company-layout { grid-template-columns: 1fr; }
  .company-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); max-width: 280px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .hero { padding: 80px 0 60px; min-height: auto; }
  .hero-title { font-size: 32px; }
  .hero-desc { font-size: 15px; }
  .section-title { font-size: 28px; }
  .solution-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics { gap: 16px; }
  .metric-num { font-size: 24px; }

  /* Mobile nav */
  .main-nav {
    position: fixed; top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: var(--env-white);
    flex-direction: column; padding: 80px 32px 32px;
    gap: 24px; z-index: 200;
    transition: right var(--env-transition);
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  }
  .main-nav.open { right: 0; }
  .main-nav a { font-size: 16px; padding: 8px 0; }
  .menu-toggle { display: block; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 28px; }
  .section-title { font-size: 24px; }
  .brand-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-bar { flex-direction: column; gap: 8px; text-align: center; }
  .company-stats { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); }
}

/* ========================================
   联系我们页 — Contact Page
   ======================================== */

/* ---------- PAGE HERO (sub-page banner) ---------- */
.page-hero {
  position: relative;
  padding: 140px 0 60px;
  background: var(--env-gradient-hero);
  overflow: hidden;
}
.page-hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,184,148,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,184,148,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero-glow {
  position: absolute; border-radius: 50%; filter: blur(80px);
  width: 400px; height: 400px;
  background: rgba(0,184,148,0.12);
  top: -10%; right: 5%;
}
.page-hero-content {
  position: relative; z-index: 2;
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  text-align: center;
}
.page-hero-badge {
  display: inline-block;
  background: rgba(0,184,148,0.15); color: var(--env-teal-light);
  padding: 6px 16px; border-radius: var(--env-radius-sm);
  font-size: 13px; font-weight: 600; letter-spacing: 0.5px;
  margin-bottom: 20px; border: 1px solid rgba(0,184,148,0.3);
}
.page-hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  color: var(--env-white); font-weight: 800;
  margin-bottom: 16px; letter-spacing: -0.5px;
}
.page-hero p {
  font-size: 16px; color: var(--env-gray-300);
  max-width: 560px; margin: 0 auto; line-height: 1.8;
}

/* ---------- CONTACT CARDS ---------- */
.contact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.contact-card {
  background: var(--env-white);
  border: 1px solid var(--env-gray-100);
  border-radius: var(--env-radius-lg);
  padding: 36px 24px;
  text-align: center;
  transition: all var(--env-transition);
}
.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--env-shadow);
  border-color: var(--env-teal);
}
.contact-card-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  background: var(--env-gradient-card);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--env-teal);
}
.contact-card h4 {
  font-size: 15px; font-weight: 700;
  color: var(--env-gray-600);
  margin-bottom: 8px;
}
.contact-card .contact-value {
  font-size: 20px; font-weight: 800;
  color: var(--env-gray-800);
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}
.contact-card .contact-value a {
  color: var(--env-gray-800);
}
.contact-card .contact-value a:hover {
  color: var(--env-teal);
}
.contact-card .contact-sub {
  font-size: 12px; color: var(--env-gray-400);
}

/* ---------- CONTACT LAYOUT ---------- */
.contact-layout {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px;
  align-items: start;
}

/* Contact form */
.contact-form {
  background: var(--env-white);
  border: 1px solid var(--env-gray-100);
  border-radius: var(--env-radius-lg);
  padding: 40px;
}
.contact-form h3 {
  font-size: 20px; font-weight: 700;
  margin-bottom: 8px; color: var(--env-gray-800);
}
.contact-form .form-desc {
  font-size: 14px; color: var(--env-gray-400);
  margin-bottom: 28px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 14px; font-weight: 600;
  color: var(--env-gray-700);
  margin-bottom: 8px;
}
.form-group label .required {
  color: var(--env-accent);
  margin-left: 2px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--env-gray-200);
  border-radius: var(--env-radius-sm);
  font-size: 14px;
  font-family: var(--env-font-sans);
  color: var(--env-gray-700);
  background: var(--env-gray-50);
  transition: all var(--env-transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--env-teal);
  background: var(--env-white);
  box-shadow: 0 0 0 3px rgba(0,184,148,0.1);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}
.form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.form-submit {
  width: 100%;
  background: var(--env-teal); color: var(--env-white);
  padding: 14px 32px; border: none;
  border-radius: var(--env-radius-sm);
  font-weight: 700; font-size: 15px;
  font-family: var(--env-font-sans);
  cursor: pointer;
  transition: all var(--env-transition);
  box-shadow: 0 4px 16px rgba(0,184,148,0.25);
}
.form-submit:hover {
  background: var(--env-teal-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,184,148,0.35);
}
.form-note {
  font-size: 12px; color: var(--env-gray-400);
  margin-top: 16px; text-align: center;
}

/* Contact info sidebar */
.contact-info-list {
  background: var(--env-white);
  border: 1px solid var(--env-gray-100);
  border-radius: var(--env-radius-lg);
  padding: 32px;
}
.contact-info-list h4 {
  font-size: 18px; font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--env-gray-100);
  color: var(--env-gray-800);
}
.contact-info-item {
  display: flex; align-items: flex-start; gap: 12px;
  margin-bottom: 20px;
}
.contact-info-item:last-child { margin-bottom: 0; }
.contact-info-item .info-icon {
  width: 36px; height: 36px;
  background: var(--env-gradient-card);
  border-radius: var(--env-radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--env-teal);
  flex-shrink: 0;
}
.contact-info-item .info-label {
  font-size: 12px; color: var(--env-gray-400);
  margin-bottom: 2px;
}
.contact-info-item .info-value {
  font-size: 15px; color: var(--env-gray-700); font-weight: 600;
  line-height: 1.5;
}
.contact-info-item .info-value a {
  color: var(--env-gray-700);
}
.contact-info-item .info-value a:hover {
  color: var(--env-teal);
}

/* Map */
.map-container {
  margin-top: 24px;
  border-radius: var(--env-radius);
  overflow: hidden;
  border: 1px solid var(--env-gray-100);
  height: 180px;
  background: var(--env-gray-50);
  position: relative;
}
.map-container iframe {
  width: 100%; height: 100%; border: 0;
}
.map-placeholder {
  display: flex; align-items: center; justify-content: center;
  height: 100%;
  flex-direction: column;
  gap: 8px;
  color: var(--env-gray-400);
  text-decoration: none;
  transition: color var(--env-transition);
}
.map-placeholder:hover {
  color: var(--env-teal);
}
.map-placeholder svg {
  margin-bottom: 4px;
}

/* ---------- SERVICE COMMITMENT ---------- */
.service-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.service-card {
  background: var(--env-white);
  border: 1px solid var(--env-gray-100);
  border-radius: var(--env-radius-lg);
  padding: 32px;
  transition: all var(--env-transition);
}
.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--env-shadow);
  border-color: var(--env-teal);
}
.service-card-icon {
  width: 48px; height: 48px;
  background: var(--env-gradient-card);
  border-radius: var(--env-radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--env-teal);
  margin-bottom: 16px;
}
.service-card h4 {
  font-size: 16px; font-weight: 700;
  margin-bottom: 8px;
}
.service-card p {
  font-size: 13px; color: var(--env-gray-500);
  line-height: 1.7;
}

/* ---------- RESPONSIVE (contact page) ---------- */
@media (max-width: 1024px) {
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .service-grid { grid-template-columns: 1fr; }
  .page-hero { padding: 120px 0 40px; }
}

/* ========================================
   新闻动态页 — News Page
   ======================================== */

/* ---------- FILTER BAR ---------- */
.news-filter-bar {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.news-filter-btn {
  background: var(--env-white);
  border: 1px solid var(--env-gray-200);
  color: var(--env-gray-500);
  padding: 8px 20px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--env-font-sans);
  cursor: pointer;
  transition: all var(--env-transition);
}
.news-filter-btn:hover {
  border-color: var(--env-teal);
  color: var(--env-teal);
  transform: translateY(-1px);
}
.news-filter-btn.active {
  background: var(--env-teal);
  border-color: var(--env-teal);
  color: var(--env-white);
  box-shadow: 0 4px 12px rgba(0,184,148,0.25);
}

/* ---------- 新闻动态 + 历史动态 并列板块 ---------- */
.news-layout-section {
  background: var(--env-light);
}
.news-layout-flex {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}
.news-layout-panel {
  background: var(--env-white);
  border-radius: var(--env-radius-lg);
  padding: 32px 28px;
  box-shadow: var(--env-shadow-sm);
}
.news-panel-main {
  flex: 1 1 58%;
  min-width: 0;
}
.news-panel-aside {
  flex: 1 1 42%;
  min-width: 0;
}
/* 面板内 section-header 缩小间距 */
.news-layout-panel .section-header {
  margin-bottom: 28px;
}
.news-layout-panel .section-desc {
  max-width: none;
}

/* ---------- NEWS GRID (page) ---------- */
.news-page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.news-page-grid .news-card {
  cursor: pointer;
}
.news-page-grid .news-card .news-img {
  height: 200px;
}
.news-page-grid .news-card .news-img-placeholder {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--env-gradient-hero);
  color: var(--env-gray-400);
}
.news-page-grid .news-card .news-img-placeholder svg {
  width: 48px; height: 48px;
  opacity: 0.4;
}

/* Category badge colors */
.news-badge.cat-展会 { background: var(--env-blue); }
.news-badge.cat-新品 { background: var(--env-teal); }
.news-badge.cat-认证 { background: var(--env-accent); color: var(--env-gray-800); }
.news-badge.cat-代理 { background: #a29bfe; }
.news-badge.cat-活动 { background: var(--env-gray-400); }

/* Image count badge */
.news-img-count {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.6);
  color: var(--env-white);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ---------- TIMELINE ---------- */
.timeline-section {
  /* 兼容：单独使用时仍保留背景 */
  background: var(--env-light);
}
.timeline {
  position: relative;
  width: 100%;
  padding-left: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 0; bottom: 0;
  width: 2px;
  background: var(--env-gray-200);
}
.timeline-item {
  position: relative;
  padding: 12px 0 12px 24px;
  cursor: pointer;
  transition: all var(--env-transition);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px; top: 18px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--env-white);
  border: 2px solid var(--env-gray-300);
  transition: all var(--env-transition);
}
.timeline-item:hover::before {
  border-color: var(--env-teal);
  background: var(--env-teal-light);
}
.timeline-item.expanded::before {
  background: var(--env-teal);
  border-color: var(--env-teal);
}
.timeline-item-date {
  font-size: 12px; color: var(--env-gray-400);
  font-weight: 600;
  margin-bottom: 2px;
}
.timeline-item-title {
  font-size: 14px; color: var(--env-gray-700);
  font-weight: 600;
  line-height: 1.5;
}
.timeline-item:hover .timeline-item-title {
  color: var(--env-teal);
}
.timeline-item-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 10px;
  font-weight: 700;
  margin-left: 6px;
  vertical-align: middle;
}
.timeline-item-badge.cat-展会 { background: rgba(9,132,227,0.15); color: var(--env-blue); }
.timeline-item-badge.cat-新品 { background: rgba(0,184,148,0.15); color: var(--env-teal); }
.timeline-item-badge.cat-认证 { background: rgba(253,203,110,0.2); color: #d4a017; }
.timeline-item-badge.cat-代理 { background: rgba(162,155,254,0.15); color: #6c5ce7; }
.timeline-item-badge.cat-活动 { background: rgba(100,116,139,0.15); color: var(--env-gray-500); }
.timeline-item-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.timeline-item.expanded .timeline-item-content {
  max-height: 600px;
}
.timeline-item-content-inner {
  padding: 12px 0 4px;
  font-size: 13px;
  color: var(--env-gray-500);
  line-height: 1.7;
}
.timeline-item-images {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.timeline-item-images img {
  width: 80px; height: 60px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--env-gray-200);
  cursor: pointer;
  transition: all var(--env-transition);
}
.timeline-item-images img:hover {
  border-color: var(--env-teal);
  transform: scale(1.05);
}

/* ---------- MODAL ---------- */
.news-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,22,40,0.8);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 60px 20px;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--env-transition);
}
.news-modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.news-modal {
  background: var(--env-white);
  border-radius: var(--env-radius-lg);
  max-width: 720px;
  width: 100%;
  box-shadow: 0 24px 80px rgba(0,0,0,0.3);
  transform: translateY(20px);
  transition: transform var(--env-transition);
  overflow: hidden;
}
.news-modal-overlay.open .news-modal {
  transform: translateY(0);
}
.news-modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--env-gray-600);
  font-size: 20px;
  z-index: 10;
  transition: all var(--env-transition);
}
.news-modal-close:hover {
  background: var(--env-white);
  color: var(--env-gray-800);
  transform: rotate(90deg);
}
.news-modal-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  background: var(--env-gray-50);
}
.news-modal-img-placeholder {
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--env-gradient-hero);
  color: var(--env-gray-400);
}
.news-modal-img-placeholder svg {
  width: 56px; height: 56px;
  opacity: 0.4;
}
.news-modal-body {
  padding: 32px;
  max-height: 60vh;
  overflow-y: auto;
}
.news-modal-date {
  font-size: 13px;
  color: var(--env-gray-400);
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.news-modal-date .news-badge {
  position: static;
}
.news-modal-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--env-gray-800);
  margin-bottom: 16px;
  line-height: 1.4;
}
.news-modal-text {
  font-size: 15px;
  color: var(--env-gray-600);
  line-height: 1.8;
  white-space: pre-wrap;
  margin-bottom: 20px;
}
.news-modal-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}
.news-modal-gallery img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: var(--env-radius-sm);
  border: 1px solid var(--env-gray-200);
  cursor: pointer;
  transition: all var(--env-transition);
}
.news-modal-gallery img:hover {
  border-color: var(--env-teal);
  transform: translateY(-2px);
  box-shadow: var(--env-shadow-sm);
}

/* ---------- LIGHTBOX (image zoom) ---------- */
.news-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--env-transition);
}
.news-lightbox.open {
  opacity: 1;
  pointer-events: auto;
}
.news-lightbox img {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--env-radius);
  box-shadow: 0 12px 60px rgba(0,0,0,0.5);
}
.news-lightbox-close {
  position: absolute;
  top: 20px; right: 20px;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: none;
  cursor: pointer;
  color: var(--env-white);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--env-transition);
}
.news-lightbox-close:hover {
  background: rgba(255,255,255,0.3);
}

/* ---------- NEWS PAGE RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .news-layout-flex { flex-direction: column; }
  .news-layout-panel { flex: none; }
  .news-page-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .news-page-grid { grid-template-columns: repeat(2, 1fr); }
  .news-modal-body { padding: 20px; }
  .news-modal-title { font-size: 18px; }
  .news-filter-bar { gap: 6px; }
  .news-filter-btn { padding: 6px 14px; font-size: 13px; }
}
@media (max-width: 480px) {
  .news-page-grid { grid-template-columns: 1fr; }
  .news-layout-panel { padding: 20px 16px; }
}

/* ========================================
   产品中心页 — Products Page
   ======================================== */

/* ---------- 搜索框 ---------- */
.product-search-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
  max-width: 600px;
}
.product-search-box {
  position: relative;
  flex: 1;
}
.product-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--env-gray-400);
  pointer-events: none;
}
.product-search-input {
  width: 100%;
  padding: 12px 16px 12px 48px;
  border: 1px solid var(--env-gray-200);
  border-radius: var(--env-radius-sm);
  font-size: 14px;
  font-family: var(--env-font-sans);
  color: var(--env-gray-700);
  background: var(--env-white);
  transition: all var(--env-transition);
}
.product-search-input:focus {
  outline: none;
  border-color: var(--env-teal);
  box-shadow: 0 0 0 3px rgba(0,184,148,0.1);
}
.product-search-input::placeholder {
  color: var(--env-gray-400);
}
.product-result-count {
  font-size: 13px;
  color: var(--env-gray-400);
  white-space: nowrap;
  font-weight: 600;
}

/* ---------- 子分类筛选栏 ---------- */
.product-sub-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  margin-bottom: 8px;
  padding-left: 4px;
}
.product-sub-filter-btn {
  background: var(--env-gray-50);
  border: 1px solid var(--env-gray-100);
  color: var(--env-gray-500);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--env-font-sans);
  cursor: pointer;
  transition: all var(--env-transition);
}
.product-sub-filter-btn:hover {
  border-color: var(--env-teal);
  color: var(--env-teal);
}
.product-sub-filter-btn.active {
  background: rgba(0,184,148,0.1);
  border-color: var(--env-teal);
  color: var(--env-teal);
  font-weight: 700;
}

/* ---------- 产品卡片（链接版） ---------- */
.product-card {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.product-card:visited,
.product-card:active {
  color: inherit;
  text-decoration: none;
}
.product-card h4 {
  transition: color var(--env-transition);
}
.product-card:hover h4 {
  color: var(--env-teal);
}
.product-card-sub {
  background: rgba(0,184,148,0.08);
  color: var(--env-teal);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  margin-left: 8px;
}
.product-pdf-tag {
  background: rgba(253,203,110,0.15) !important;
  color: #d4a017 !important;
  font-weight: 700 !important;
}

/* ---------- 分页 ---------- */
.product-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.page-btn {
  background: var(--env-white);
  border: 1px solid var(--env-gray-200);
  color: var(--env-gray-600);
  padding: 8px 16px;
  border-radius: var(--env-radius-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--env-font-sans);
  cursor: pointer;
  transition: all var(--env-transition);
  min-width: 40px;
  text-align: center;
}
.page-btn:hover {
  border-color: var(--env-teal);
  color: var(--env-teal);
  transform: translateY(-1px);
}
.page-btn.active {
  background: var(--env-teal);
  border-color: var(--env-teal);
  color: var(--env-white);
  box-shadow: 0 4px 12px rgba(0,184,148,0.25);
}
.page-ellipsis {
  color: var(--env-gray-400);
  padding: 0 4px;
  font-weight: 600;
}

/* ---------- 产品列表页响应式 ---------- */
@media (max-width: 768px) {
  .product-search-wrap {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .product-result-count {
    text-align: right;
  }
  .page-btn {
    padding: 6px 12px;
    font-size: 13px;
  }
}

/* ========================================
   产品详情页 — Product Detail Page
   ======================================== */

/* ---------- 布局 ---------- */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 60px;
}

/* ---------- 图片区 ---------- */
.product-detail-gallery {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.product-detail-img-wrap {
  background: var(--env-gray-50);
  border: 1px solid var(--env-gray-100);
  border-radius: var(--env-radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.product-detail-img-wrap.main {
  min-height: 350px;
}
.product-detail-img-wrap:not(.main) {
  min-height: 120px;
  max-width: 200px;
}
.product-detail-img-wrap img {
  max-width: 100%;
  max-height: 350px;
  object-fit: contain;
}
.product-detail-img-wrap:not(.main) img {
  max-height: 100px;
}

/* ---------- 信息区 ---------- */
.product-detail-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.product-detail-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--env-gray-100);
}
.product-detail-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--env-gray-400);
  min-width: 60px;
  letter-spacing: 1px;
}
.product-detail-value {
  font-size: 15px;
  color: var(--env-gray-600);
}
.product-detail-value.model {
  font-size: 20px;
  font-weight: 800;
  color: var(--env-teal);
  letter-spacing: -0.5px;
}

/* ---------- 描述区 ---------- */
.product-detail-desc-section h3,
.product-detail-features-section h3,
.product-detail-apps-section h3,
.product-detail-related h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--env-gray-800);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--env-teal);
  display: inline-block;
}
.product-detail-desc-text {
  font-size: 14px;
  color: var(--env-gray-600);
  line-height: 1.9;
  white-space: pre-wrap;
}

/* ---------- 特点列表 ---------- */
.product-detail-features {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}
.product-detail-features li {
  font-size: 14px;
  color: var(--env-gray-600);
  padding-left: 20px;
  position: relative;
  line-height: 1.6;
}
.product-detail-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--env-teal);
}

/* ---------- 应用标签 ---------- */
.product-detail-apps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.product-detail-app-tag {
  background: var(--env-gray-50);
  border: 1px solid var(--env-gray-100);
  color: var(--env-gray-600);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--env-transition);
}
.product-detail-app-tag:hover {
  border-color: var(--env-teal);
  color: var(--env-teal);
  background: rgba(0,184,148,0.05);
}

/* ---------- PDF下载 ---------- */
.product-detail-pdf-section {
  margin-top: 8px;
}
.product-detail-pdf-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.product-detail-action-section {
  display: flex;
  gap: 0;
  padding-top: 16px;
  border-top: 1px solid var(--env-gray-100);
}

/* ---------- 相关产品 ---------- */
.product-detail-related {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--env-gray-100);
}
.product-detail-related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}
.product-detail-related-card {
  background: var(--env-white);
  border: 1px solid var(--env-gray-100);
  border-radius: var(--env-radius);
  padding: 16px;
  transition: all var(--env-transition);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.product-detail-related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--env-shadow-sm);
  border-color: var(--env-teal);
}
.product-detail-related-card h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--env-gray-800);
  line-height: 1.4;
}
.product-detail-related-card:hover h4 {
  color: var(--env-teal);
}
.product-detail-related-img {
  height: 100px;
  background: var(--env-gray-50);
  border-radius: var(--env-radius-sm);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.product-detail-related-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.product-detail-related-cat {
  font-size: 12px;
  color: var(--env-gray-400);
  font-weight: 600;
}

/* ---------- 详情页响应式 ---------- */
@media (max-width: 1024px) {
  .product-detail-layout {
    grid-template-columns: 1fr;
  }
  .product-detail-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .product-detail-features {
    grid-template-columns: 1fr;
  }
  .product-detail-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 480px) {
  .product-detail-related-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   解决方案页 — 应用方案文档卡片
   ======================================== */
.solution-doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.solution-doc-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--env-gray-200);
  transition: all 0.3s ease;
}
.solution-doc-card:hover {
  border-color: var(--env-primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}
.solution-doc-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--env-primary-50, #eef4ff);
  color: var(--env-primary);
  border-radius: 10px;
}
.solution-doc-body {
  flex: 1;
  min-width: 0;
}
.solution-doc-body h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--env-gray-800);
  line-height: 1.4;
}
.solution-doc-desc {
  font-size: 13px;
  color: var(--env-gray-500);
  line-height: 1.5;
  margin-bottom: 8px;
}
.solution-doc-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.solution-doc-cat {
  font-size: 11px;
  padding: 2px 8px;
  background: var(--env-gray-100);
  color: var(--env-gray-500);
  border-radius: 4px;
}
.solution-doc-size {
  font-size: 11px;
  color: var(--env-gray-400);
}
.solution-doc-download {
  font-size: 12px;
  color: var(--env-primary);
  font-weight: 500;
  margin-left: auto;
}

/* ========================================
   技术资料页 — 文档列表
   ======================================== */
/* ---- 技术资料页：暗色主题适配 ---- */
.tech-search-wrap {
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
}
.tech-search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 480px;
  padding: 10px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 24px;
  transition: all 0.3s ease;
}
.tech-search-box:focus-within {
  border-color: var(--env-teal);
  box-shadow: 0 0 0 3px rgba(0,184,148,0.15);
}
.tech-search-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 14px;
  background: transparent;
  color: var(--env-white);
}
.tech-search-input::placeholder {
  color: var(--env-gray-400);
}
.tech-result-count {
  font-size: 13px;
  color: var(--env-gray-400);
}
/* 暗色主题下的筛选按钮 */
.tech .news-filter-btn {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--env-gray-300);
}
.tech .news-filter-btn:hover {
  border-color: var(--env-teal);
  color: var(--env-teal-light);
  background: rgba(0,184,148,0.1);
}
.tech .news-filter-btn.active {
  background: var(--env-teal);
  border-color: var(--env-teal);
  color: var(--env-white);
  box-shadow: 0 4px 12px rgba(0,184,148,0.25);
}
/* 技术资料卡片 footer（文件大小 + 下载链接） */
a.tech-card {
  text-decoration: none;
  color: inherit;
}
.tech-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
}
.tech-card-size {
  font-size: 12px;
  color: var(--env-gray-400);
}
/* ---- 旧 tech-doc 样式保留兼容 ---- */
.tech-doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 16px;
}
.tech-doc-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--env-gray-200);
  transition: all 0.3s ease;
}
.tech-doc-card:hover {
  border-color: var(--env-primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}
.tech-doc-card-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--env-primary-50, #eef4ff);
  color: var(--env-primary);
  border-radius: 10px;
}
.tech-doc-card-body {
  flex: 1;
  min-width: 0;
}
.tech-doc-card-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.tech-doc-cat {
  font-size: 11px;
  padding: 2px 8px;
  background: var(--env-gray-100);
  color: var(--env-gray-500);
  border-radius: 4px;
}
.tech-doc-ext {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.tech-doc-ext.pdf {
  background: #fce8e6;
  color: #c5221f;
}
.tech-doc-ext.doc,
.tech-doc-ext.docx {
  background: #e8f0fe;
  color: #1967d2;
}
.tech-doc-card-body h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--env-gray-800);
  line-height: 1.4;
}
.tech-doc-card-body p {
  font-size: 13px;
  color: var(--env-gray-500);
  line-height: 1.5;
  margin-bottom: 8px;
}
.tech-doc-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.tech-doc-size {
  font-size: 11px;
  color: var(--env-gray-400);
}
.tech-doc-download {
  font-size: 12px;
  color: var(--env-primary);
  font-weight: 500;
  margin-left: auto;
}
@media (max-width: 480px) {
  .solution-doc-grid,
  .tech-doc-grid {
    grid-template-columns: 1fr;
  }
}

/* ====== Enriched Solution Cards ====== */
.solution-cat-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}
.solution-cat-btn {
  padding: 6px 16px;
  border: 1px solid var(--env-gray-200, #e2e5e9);
  border-radius: 20px;
  background: #fff;
  color: var(--env-gray-600, #6c757d);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.solution-cat-btn:hover {
  border-color: var(--env-primary, #2c5f88);
  color: var(--env-primary, #2c5f88);
}
.solution-cat-btn.active {
  background: var(--env-primary, #2c5f88);
  border-color: var(--env-primary, #2c5f88);
  color: #fff;
}

/* ---- 解决方案页应用方案卡片补充样式（基于首页 .solution-card） ---- */

/* 分类徽标行 */
.solution-card .solution-cat-row {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 10px; position: relative; z-index: 1;
}
.solution-cat-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 11px; font-weight: 600;
  background: var(--env-teal); color: var(--env-white);
}
.solution-cat-badge.sub {
  background: var(--env-gray-50); color: var(--env-gray-600);
  font-weight: 500;
}

/* 卡片底部链接区 */
.solution-card-links {
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap;
  position: relative; z-index: 1;
}

/* 产品关联链接 */
.solution-product-ref {
  display: flex; align-items: center; gap: 4px;
  font-size: 13px; font-weight: 500;
  color: var(--env-gray-500);
  transition: color var(--env-transition);
}
.solution-product-ref:hover {
  color: var(--env-teal);
}

/* 首页 solution-card 中的 p 宽度调整 — 解决方案页描述更短，可放宽 */
#solutionAppGrid .solution-card p {
  max-width: 100%;
}

@media (max-width: 768px) {
  #solutionAppGrid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  #solutionAppGrid { grid-template-columns: 1fr; }
  #solutionAppGrid .solution-img { width: 120px; height: 90px; }
}