/* ============================================================
   绿能科技 — 主样式表 (Green Energy Theme)
   设计系统：深绿(#065F46) + 亮绿(#10B981) + 白 + 浅灰
   风格：大留白 / 大圆角 / 未来感 / 绿色科技
   断点：768px (平板), 480px (手机)
   ============================================================ */

/* ===== CSS 变量 (Design Tokens) ===== */
:root {
  /* 品牌色 */
  --primary:        #065F46;
  --primary-dark:   #064E3B;
  --primary-darker: #033D2C;
  --primary-light:  #10B981;
  --primary-lighter: #D1FAE5;
  --primary-bg:     #ECFDF5;

  /* 中性色 */
  --white:      #FFFFFF;
  --gray-50:    #F9FAFB;
  --gray-100:   #F3F4F6;
  --gray-200:   #E5E7EB;
  --gray-300:   #D1D5DB;
  --gray-400:   #9CA3AF;
  --gray-500:   #6B7280;
  --gray-600:   #4B5563;
  --gray-700:   #374151;
  --gray-800:   #1F2937;
  --gray-900:   #111827;

  /* 语义色 */
  --text-primary:   var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted:     var(--gray-400);
  --text-light:     rgba(255,255,255,0.9);
  --text-light-muted: rgba(255,255,255,0.6);

  /* 边框和背景 */
  --border:       var(--gray-200);
  --border-light: var(--gray-100);
  --bg-page:      var(--white);
  --bg-card:      var(--white);
  --bg-section:   var(--gray-50);

  /* 圆角系统 (大圆角偏好) */
  --radius-xs:  4px;
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  20px;
  --radius-2xl: 24px;

  /* 阴影系统 */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl:  0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(6,95,70,0.06);
  --shadow-card-hover: 0 4px 20px rgba(6,95,70,0.12);

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition:      0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* 字体 — 中文优先，更佳渲染 */
  --font-sans: 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Hiragino Sans GB', 'Helvetica Neue', Helvetica, 'Segoe UI', Arial, sans-serif;
  --font-heading: 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, sans-serif;

  /* 间距 */
  --section-padding: 80px;
  --header-height: 72px;

  /* 导航下拉 z-index (13.3) */
  --z-dropdown: 100;
  --z-header: 50;
  --z-mobile-nav: 200;
  --z-modal: 300;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-page);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

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

img[data-src] {
  opacity: 0;
  transition: opacity 0.5s ease;
  min-width: 1px;
  min-height: 1px;
}

img[data-src].loaded {
  opacity: 1;
}

/* 确保懒加载图片容器有可见尺寸 */
.product-card__image img[data-src],
.featured-card__image img[data-src],
.news-item__image img[data-src],
.case-card__image img[data-src],
.search-result-item__thumb img[data-src],
.install-card__image img[data-src] {
  min-height: 60px;
  min-width: 60px;
}

ul, ol { list-style: none; }

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Section 通用 ===== */
.section {
  padding: var(--section-padding) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header--light {
  color: var(--white);
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-light);
  background: var(--primary-lighter);
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
}

.section-tag--light {
  color: var(--primary-lighter);
  background: rgba(255,255,255,0.15);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.section-title--light {
  color: var(--white);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

.section-subtitle--light {
  color: var(--text-light-muted);
}

.section-footer {
  text-align: center;
  margin-top: 40px;
}

/* ===== Button 系统 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn--primary {
  background: var(--primary);
  color: var(--white);
  border: 2px solid var(--primary);
}

.btn--primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(6,95,70,0.3);
}

.btn--outline-primary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn--outline-primary:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-1px);
}

.btn--outline-white {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.4);
}

.btn--outline-white:hover {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}

.btn--white {
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--white);
}

.btn--white:hover {
  background: var(--primary-lighter);
  color: var(--primary-dark);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 15px 32px;
  font-size: 1rem;
}

.btn--block {
  width: 100%;
  justify-content: center;
  padding: 14px;
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition);
  height: var(--header-height);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255,255,255,0.97);
}

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

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
}

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

.header__logo-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.header__logo-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--primary);
  background: var(--primary-bg);
}

.nav-arrow {
  font-size: 0.55rem;
  transition: transform var(--transition);
}

/* 下拉菜单 (13.3: z-index=100) */
.header__nav-item {
  position: relative;
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__nav-item:hover .nav-arrow {
  transform: rotate(180deg);
}

.header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 8px;
  min-width: 180px;
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.header__dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.header__dropdown a:hover {
  background: var(--primary-bg);
  color: var(--primary);
}

/* 右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header__search-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.header__search-btn:hover {
  background: var(--gray-100);
  color: var(--primary);
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.header__cta:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(6,95,70,0.3);
}

/* 搜索下拉 */
.search-dropdown {
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition);
}

.search-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-form {
  display: flex;
  gap: 10px;
}

.search-input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  border-color: var(--primary);
}

.search-submit {
  padding: 12px 20px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-submit:hover {
  background: var(--primary-dark);
}

/* 汉堡菜单 (独立于 header__actions, 13.4) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  z-index: calc(var(--z-mobile-nav) + 1);
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 4px;
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100vh;
  background: var(--white);
  z-index: var(--z-mobile-nav);
  overflow-y: auto;
  transition: right var(--transition-slow);
  box-shadow: var(--shadow-xl);
}

.mobile-nav.active { right: 0; }

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: calc(var(--z-mobile-nav) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

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

.mobile-nav__inner {
  padding: 24px;
}

.mobile-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
  font-weight: 700;
  font-size: 1.05rem;
}

.mobile-nav__link {
  display: block;
  padding: 14px 0;
  font-size: 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
  font-weight: 500;
}

.mobile-nav__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  font-size: 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  font-weight: 500;
}

.mobile-nav__sub {
  display: none;
  padding: 4px 0 4px 16px;
}

.mobile-nav__sub.open { display: block; }

.mobile-nav__sub a {
  display: block;
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.mobile-nav__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  padding: 14px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-md);
  font-weight: 600;
}

/* ===== Hero/Banner ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 800px;
  overflow: hidden;
}

.hero-swiper {
  height: 100%;
}

.hero__slide {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero__slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 8s ease;
}

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

.hero__slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(6, 95, 70, 0.75) 0%,
    rgba(6, 95, 70, 0.45) 40%,
    rgba(0, 0, 0, 0.2) 100%
  );
}

.hero__slide-content {
  position: absolute;
  bottom: 20%;
  left: 0;
  right: 0;
  z-index: 2;
}

.hero__slide-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-lighter);
  background: rgba(255,255,255,0.12);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
  backdrop-filter: blur(10px);
}

.hero__slide-title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  max-width: 700px;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero__controls {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 24px;
  z-index: 5;
}

.hero-pagination {
  display: flex;
  gap: 8px;
}

.hero-pagination .swiper-pagination-bullet {
  width: 10px;
  height: 10px;
  background: rgba(255,255,255,0.4);
  border-radius: 50px;
  transition: all 0.4s ease;
  opacity: 1;
}

.hero-pagination .swiper-pagination-bullet-active {
  width: 32px;
  background: var(--white);
}

.hero-navigation {
  display: flex;
  gap: 8px;
}

.hero-prev,
.hero-next {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.hero-prev:hover,
.hero-next:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.6);
}

/* ===== Stats 数据滚动 ===== */
.stats-section {
  padding: 64px 0;
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--border-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
}

.stat-item__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--primary-bg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
}

.stat-item__number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat-item__unit {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-light);
}

.stat-item__label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ===== 产品分类卡片 ===== */
.product-cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.product-cat-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  cursor: pointer;
}

.product-cat-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.product-cat-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--primary);
  flex-shrink: 0;
  transition: all var(--transition);
}

.product-cat-card:hover .product-cat-card__icon {
  background: var(--primary);
  color: var(--white);
}

.product-cat-card__info { flex: 1; }

.product-cat-card__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.product-cat-card__sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.product-cat-card__arrow {
  color: var(--gray-300);
  font-size: 0.8rem;
  transition: all var(--transition);
}

.product-cat-card:hover .product-cat-card__arrow {
  color: var(--primary);
  transform: translateX(3px);
}

/* ===== 主推产品 ===== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.featured-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.featured-card__image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--gray-100);
}

.featured-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.featured-card:hover .featured-card__image img {
  transform: scale(1.05);
}

.featured-card__body {
  padding: 20px 24px 24px;
}

.featured-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.featured-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.featured-card__specs {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--border-light);
  margin-bottom: 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.featured-card__specs i {
  color: var(--primary-light);
  margin-right: 4px;
}

.featured-card__cta {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.featured-card:hover .featured-card__cta {
  gap: 10px;
}

/* ===== 解决方案 ===== */
.solutions-section {
  color: var(--white);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.solution-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition);
}

.solution-card:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-4px);
}

.solution-card__visual {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: rgba(255,255,255,0.9);
  position: relative;
  overflow: hidden;
}

.solution-card__visual::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.3;
}

.solution-card__visual--home {
  background: linear-gradient(135deg, #065F46 0%, #10B981 100%);
}

.solution-card__visual--commercial {
  background: linear-gradient(135deg, #064E3B 0%, #059669 100%);
}

.solution-card__visual--public {
  background: linear-gradient(135deg, #047857 0%, #34D399 100%);
}

.solution-card__body {
  padding: 24px;
}

.solution-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--white);
}

.solution-card__desc {
  font-size: 0.88rem;
  color: var(--text-light-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.solution-card__features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solution-card__features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.solution-card__features i {
  color: var(--primary-light);
  font-size: 0.75rem;
}

/* ===== 工程案例 ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.case-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.case-card__image {
  width: 100%;
  height: 100%;
}

.case-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.case-card:hover .case-card__image img {
  transform: scale(1.08);
}

.case-card__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  background: linear-gradient(to top, rgba(6,95,70,0.85) 0%, rgba(6,95,70,0.3) 50%, transparent 100%);
  transition: background var(--transition);
}

.case-card:hover .case-card__overlay {
  background: linear-gradient(to top, rgba(6,95,70,0.95) 0%, rgba(6,95,70,0.4) 50%, transparent 100%);
}

.case-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}

.case-card__info {
  font-size: 0.82rem;
  color: var(--text-light-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.case-card__divider {
  margin: 0 4px;
  color: rgba(255,255,255,0.3);
}

/* ===== 绿色承诺 ===== */
.commitment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.commitment-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition);
}

.commitment-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.commitment-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary);
}

.commitment-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.commitment-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 新闻模块 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-item {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.news-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.news-item__image {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--gray-100);
}

.news-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.news-item:hover .news-item__image img {
  transform: scale(1.05);
}

.news-item__body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.news-item__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.news-item__more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.news-item:hover .news-item__more { gap: 10px; }

/* 列表页新闻样式 */
.news-item--list {
  flex-direction: row;
}

.news-item--list .news-item__image {
  width: 220px;
  aspect-ratio: 4/3;
  flex-shrink: 0;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-darker) 0%, var(--primary) 50%, var(--primary-light) 100%);
}

.cta-card {
  text-align: center;
  padding: 60px 40px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
}

.cta-card__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-lighter);
  margin-bottom: 16px;
}

.cta-card__title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.cta-card__desc {
  font-size: 1rem;
  color: var(--text-light-muted);
  margin-bottom: 32px;
}

.cta-card__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  background: var(--primary-darker);
  color: var(--text-light);
}

.footer__main {
  padding: 64px 0 40px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr 1fr;
  gap: 40px;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer__brand-icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--primary-light);
  flex-shrink: 0;
}

.footer__brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  display: block;
}

.footer__brand-sub {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-light);
}

.footer__desc {
  font-size: 0.85rem;
  color: var(--text-light-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer__social {
  display: flex;
  gap: 10px;
}

.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-light-muted);
  transition: all var(--transition);
}

.footer__social a:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.3);
  color: var(--primary-light);
}

.footer__col-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: 0.03em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 0.88rem;
  color: var(--text-light-muted);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--primary-light);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-light-muted);
  line-height: 1.5;
}

.footer__contact-item i {
  color: var(--primary-light);
  margin-top: 3px;
  width: 14px;
  flex-shrink: 0;
}

.footer__qrcode {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
}

.footer__qrcode-placeholder {
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--primary-light);
  flex-shrink: 0;
}

.footer__qrcode span {
  font-size: 0.78rem;
  color: var(--text-light-muted);
  line-height: 1.6;
}

/* 合作伙伴 */
.footer__partners {
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.partner-bar {
  display: flex;
  align-items: center;
  gap: 16px;
}

.partner-bar__label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-light-muted);
  white-space: nowrap;
}

.partner-bar__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.partner-bar__links a {
  font-size: 0.82rem;
  color: var(--text-light-muted);
  transition: color var(--transition-fast);
}

.partner-bar__links a:hover {
  color: var(--primary-light);
}

/* 版权栏 */
.footer__bottom {
  padding: 20px 0;
}

.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-light-muted);
}

.footer__bottom-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer__bottom-links a {
  color: var(--text-light-muted);
}

.footer__bottom-links a:hover {
  color: var(--primary-light);
}

.footer__divider {
  color: rgba(255,255,255,0.15);
}

/* ===== 返回顶部 ===== */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--shadow-lg);
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
}

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

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

/* ===== 在线客服 ===== */
.online-service {
  position: fixed;
  right: 24px;
  bottom: 88px;
  z-index: 90;
}

.online-service__btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 4px 16px rgba(6,95,70,0.35);
  cursor: pointer;
  transition: all var(--transition);
}

.online-service__btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(6,95,70,0.5);
}

.online-service__popup {
  position: absolute;
  bottom: 64px;
  right: 0;
  width: 260px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}

.online-service__popup.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.online-service__popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
}

.online-service__close {
  color: var(--white);
  font-size: 0.9rem;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.online-service__close:hover { opacity: 1; }

.online-service__popup-body {
  padding: 18px;
}

.online-service__popup-body p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.online-service__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 8px;
  transition: background var(--transition-fast);
}

.online-service__link:hover {
  background: var(--primary-bg);
  color: var(--primary);
}

/* ===== 内页通用 ===== */
.inner-banner {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: var(--header-height);
}

.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: var(--primary-darker);
}

.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(6, 95, 70, 0.85) 0%,
    rgba(6, 78, 59, 0.7) 100%
  );
}

.inner-banner__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.inner-banner__tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-lighter);
  margin-bottom: 12px;
}

.inner-banner__title {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.inner-banner__subtitle {
  font-size: 1rem;
  color: var(--text-light-muted);
  margin-top: 8px;
}

/* 面包屑 */
.breadcrumb-bar {
  padding: 14px 0;
  background: var(--gray-50);
  border-bottom: 1px solid var(--border-light);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { margin: 0 6px; font-size: 0.65rem; }

/* ===== 过滤栏 ===== */
.filter-bar-wrapper {
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: var(--header-height);
  z-index: 40;
}

.filter-bar {
  display: flex;
  gap: 4px;
  padding: 12px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.filter-bar__item {
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 50px;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.filter-bar__item:hover,
.filter-bar__item.active {
  background: var(--primary-bg);
  color: var(--primary);
}

/* ===== 产品网格 (列表页) ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.product-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.product-card__image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--gray-100);
  min-height: 80px;
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  display: block;
  min-height: 80px;
}

.product-card:hover .product-card__image img {
  transform: scale(1.05);
}

.product-card__body {
  padding: 16px 18px 18px;
}

.product-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.product-card__desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
}

.product-card__specs {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.product-card__spec i {
  color: var(--primary-light);
  margin-right: 3px;
}

/* ===== 产品详情页 ===== */
.product-detail__top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.product-detail__gallery {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--gray-100);
}

.product-gallery-swiper {
  border-radius: var(--radius-xl);
}

.product-gallery-swiper img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.product-detail__info {
  display: flex;
  flex-direction: column;
}

.product-detail__title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.product-detail__subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

.product-detail__params {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}

.param-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
}

.param-item__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.param-item__label i { color: var(--primary-light); }

.param-item__value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.product-detail__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* 产品详情 Tabs */
.product-detail__tabs {
  margin-bottom: 48px;
}

.tabs-nav {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border-light);
  margin-bottom: 28px;
}

.tabs-nav__btn {
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
}

.tabs-nav__btn:hover { color: var(--text-primary); }

.tabs-nav__btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tabs-panel {
  display: none;
}

.tabs-panel.active { display: block; }

/* 技术参数表 */
.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table td {
  padding: 12px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-light);
}

.specs-table td:first-child {
  font-weight: 600;
  color: var(--text-secondary);
  width: 30%;
  background: var(--gray-50);
}

/* 安装案例网格 */
.install-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.install-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.install-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.install-card__image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.install-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.install-card:hover .install-card__image img { transform: scale(1.05); }

.install-card__title {
  padding: 10px 14px;
  font-size: 0.88rem;
  font-weight: 600;
}

/* ===== 案例详情页 ===== */
.case-detail__hero {
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: 32px;
}

.case-detail__hero img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.case-detail__header {
  margin-bottom: 32px;
}

.case-detail__title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.case-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.case-detail__meta i {
  color: var(--primary-light);
  margin-right: 4px;
}

/* ===== 新闻详情 ===== */
.news-detail__header {
  margin-bottom: 32px;
}

.news-detail__title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  line-height: 1.4;
}

.news-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.news-detail__meta i {
  margin-right: 4px;
}

.news-detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 32px 0;
  padding-top: 28px;
  border-top: 1px solid var(--border-light);
}

.tag {
  display: inline-block;
  padding: 5px 14px;
  font-size: 0.8rem;
  color: var(--primary);
  background: var(--primary-bg);
  border-radius: 50px;
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--primary);
  color: var(--white);
}

/* ===== 新闻列表 ===== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ===== 联系我们 ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.contact-info__intro {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.7;
}

.contact-info__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-info__card {
  display: flex;
  gap: 14px;
  padding: 18px;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}

.contact-info__card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.contact-info__card-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-info__card-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-info__card-value {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-map {
  min-height: 380px;
}

.contact-map__container {
  width: 100%;
  height: 380px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.contact-map__container .leaflet-container {
  height: 100%;
  border-radius: var(--radius-xl);
}

/* ===== 留言询价 ===== */
.inquiry-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.inquiry-intro__features {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.inquiry-intro__feature {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius-md);
}

.inquiry-intro__feature i {
  font-size: 1.2rem;
  color: var(--primary);
  margin-top: 2px;
}

.inquiry-intro__feature strong {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 2px;
}

.inquiry-intro__feature p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.inquiry-form-card {
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.inquiry-form-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 24px;
}

/* ===== 表单通用 ===== */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group {
  margin-bottom: 16px;
  flex: 1;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.required {
  color: #EF4444;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(6,95,70,0.08);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

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

.captcha-img {
  height: 44px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.form-notice {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 12px;
}

.form-notice a {
  color: var(--primary);
}

/* ===== 搜索页 ===== */
.search-hero {
  padding: 120px 0 48px;
  background: linear-gradient(135deg, var(--primary-bg), var(--white));
  border-bottom: 1px solid var(--border-light);
  margin-top: var(--header-height);
}

.search-hero__inner {
  max-width: 600px;
  margin: 0 auto;
}

.search-hero__title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.search-hero__form {
  display: flex;
  gap: 10px;
}

.search-hero__input-wrap {
  flex: 1;
  position: relative;
}

.search-hero__icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-hero__input {
  width: 100%;
  padding: 13px 16px 13px 42px;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-hero__input:focus {
  border-color: var(--primary);
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.search-result-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.search-result-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.search-result-item__thumb {
  width: 120px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--gray-100);
}

.search-result-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result-item__info { flex: 1; }

.search-result-item__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.search-result-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 6px;
}

.search-result-item__desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== 详情页通用 ===== */
.detail__body {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--text-primary);
}

.detail__body h2,
.detail__body h3 {
  margin: 28px 0 14px;
  font-weight: 700;
}

.detail__body p {
  margin-bottom: 16px;
}

.detail__body img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 20px 0;
}

.detail__body ul,
.detail__body ol {
  padding-left: 1.5em;
  margin-bottom: 16px;
  list-style: disc;
}

.detail__body ol { list-style: decimal; }

.detail__body li { margin-bottom: 6px; }

.detail__body table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.detail__body td,
.detail__body th {
  padding: 10px 14px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

/* 上下篇导航 */
.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  margin-top: 40px;
  border-top: 1px solid var(--border-light);
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 10px;
}

.detail__pager a {
  color: var(--primary);
  font-weight: 600;
}

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

/* 推荐/相关标题 */
.related-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.pagination a {
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.pagination a:hover,
.pagination a.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.pagination__btn {
  padding: 8px 12px !important;
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 16px;
  display: block;
  color: var(--gray-300);
}

.empty-state p {
  font-size: 1rem;
}

/* ===== 响应式 (768px 断点) ===== */
@media (max-width: 1024px) {
  :root {
    --section-padding: 64px;
  }

  .header__nav { display: none; }
  .header__actions .header__cta { display: none; }
  .hamburger { display: flex; }

  /* Hero */
  .hero__slide-title { font-size: 2rem; max-width: 100%; }
  .hero__controls { bottom: 28px; }

  /* Grids —— 保持多列，只收紧间距。
     原先在这里压成单列，导致平板/小笔记本上页面过长。 */
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .product-cat-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-grid { gap: 20px; }
  .solutions-grid { gap: 20px; }
  .case-grid { gap: 16px; }
  .commitment-grid { gap: 20px; }
  .news-grid { gap: 20px; }

  /* Footer */
  .footer__grid { grid-template-columns: repeat(2, 1fr); }

  /* 产品列表 */
  .product-grid { grid-template-columns: repeat(2, 1fr); }

  /* 内页布局 */
  .product-detail__top { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .inquiry-layout { grid-template-columns: 1fr; max-width: 550px; margin: 0 auto; }

  /* 分页 */
  .detail__pager { justify-content: center; text-align: center; }

  .section-title { font-size: 1.7rem; }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 40px;
  }

  .container { padding: 0 16px; }

  /* 区块标题紧凑化 */
  .section-header { margin-bottom: 24px; }
  .section-title { font-size: 1.45rem; }
  .section-subtitle { font-size: 0.88rem; line-height: 1.6; }
  .section-tag { font-size: 0.62rem; padding: 3px 10px; margin-bottom: 0.5rem; }

  .hero {
    height: 72vh;
    min-height: 420px;
  }

  .hero__slide-title { font-size: 1.6rem; }
  .hero__controls { bottom: 20px; }
  .hero-prev, .hero-next { width: 36px; height: 36px; }

  /* 数字实力 */
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 22px 12px; }
  .stat-item__number { font-size: 1.8rem; }

  /* ★ 核心产品分类：紧凑单列 */
  .product-cat-grid { grid-template-columns: 1fr; gap: 10px; }
  .product-cat-card { gap: 12px; padding: 14px 16px; }
  .product-cat-card__icon { width: 40px; height: 40px; font-size: 1rem; }
  .product-cat-card__name { font-size: 0.92rem; }
  .product-cat-card__sub { font-size: 0.76rem; }

  /* ★ 主推产品：单列大卡 → 两列紧凑网格 */
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: none;
    margin: 0;
  }
  .featured-card__image { aspect-ratio: 1 / 1; }
  .featured-card__body { padding: 12px 12px 14px; }
  .featured-card__title { font-size: 0.86rem; line-height: 1.35; margin-bottom: 6px; }
  .featured-card__specs {
    gap: 8px;
    padding: 8px 0;
    margin-bottom: 8px;
    font-size: 0.68rem;
    flex-wrap: wrap;
  }
  .featured-card__cta { font-size: 0.76rem; gap: 4px; }

  /* ★ 解决方案：压缩视觉区与内边距 */
  .solutions-grid { grid-template-columns: 1fr; gap: 12px; max-width: none; margin: 0; }
  .solution-card__visual { height: 68px; font-size: 1.6rem; }
  .solution-card__body { padding: 16px; }
  .solution-card__title { font-size: 1rem; margin-bottom: 6px; }
  .solution-card__desc { font-size: 0.8rem; line-height: 1.6; margin-bottom: 12px; }
  .solution-card__features { gap: 6px; }
  .solution-card__features li { font-size: 0.78rem; }

  /* ★ 工程案例：大图卡 → 横向紧凑卡（保留绿色品牌底） */
  .case-grid { grid-template-columns: 1fr; gap: 10px; max-width: none; margin: 0; }
  .case-card {
    aspect-ratio: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: linear-gradient(135deg, #065F46 0%, #047857 100%);
  }
  .case-card__image {
    position: static;
    width: 88px;
    height: 68px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
  }
  .case-card__overlay {
    position: static;
    inset: auto;
    flex: 1;
    min-width: 0;
    padding: 0;
    background: none;
    justify-content: center;
  }
  .case-card__title { font-size: 0.92rem; line-height: 1.35; margin-bottom: 4px; }
  .case-card__info { font-size: 0.72rem; }

  /* ★ 绿色承诺：图标左 + 内容右 */
  .commitment-grid { grid-template-columns: 1fr; gap: 10px; max-width: none; margin: 0; }
  .commitment-card {
    display: grid;
    grid-template-columns: 44px 1fr;
    column-gap: 14px;
    align-items: start;
    text-align: left;
    padding: 16px 14px;
  }
  .commitment-card__icon {
    grid-column: 1;
    grid-row: 1 / span 2;
    width: 44px;
    height: 44px;
    margin: 0;
    font-size: 1.15rem;
  }
  .commitment-card__title { grid-column: 2; font-size: 0.95rem; margin-bottom: 6px; }
  .commitment-card__desc { grid-column: 2; font-size: 0.78rem; line-height: 1.6; }

  /* ★ 新闻：大图卡 → 缩略图列表 */
  .news-grid { grid-template-columns: 1fr; gap: 10px; max-width: none; margin: 0; }
  .news-item { flex-direction: row; gap: 12px; padding: 12px; align-items: center; }
  .news-item__image { width: 96px; aspect-ratio: 4 / 3; flex-shrink: 0; }
  .news-item__date { font-size: 0.68rem; }
  .news-item__title { font-size: 0.88rem; line-height: 1.4; }
  .news-item__desc { font-size: 0.76rem; -webkit-line-clamp: 2; }

  /* 空状态与区块尾部按钮 */
  .empty-state { padding: 28px 16px; }
  .empty-state i { font-size: 2rem; margin-bottom: 10px; }
  .empty-state p { font-size: 0.85rem; }
  .section-footer { margin-top: 24px; }

  /* 列表页 / 详情页 */
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .install-grid { grid-template-columns: 1fr; }
  .news-item--list { flex-direction: row; }
  .news-item--list .news-item__image { width: 96px; aspect-ratio: 4 / 3; }

  /* 内页 */
  .inner-banner { height: 200px; }
  .inner-banner__title { font-size: 1.5rem; }
  .inner-banner__subtitle { font-size: 0.9rem; }

  /* 搜索 */
  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 140px; }

  /* 表单 */
  .form-row { grid-template-columns: 1fr; }

  .tabs-nav { overflow-x: auto; }
  .tabs-nav__btn { white-space: nowrap; padding: 10px 16px; font-size: 0.85rem; }

  /* CTA */
  .cta-card { padding: 36px 20px; }
  .cta-card__title { font-size: 1.4rem; }

  /* Footer：品牌通栏 + 2 列 */
  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 22px 16px; }
  .footer__grid > div:first-child { grid-column: 1 / -1; }
  /* 二维码列在窄栏里会把文字挤成三行，改成整行横排 */
  .footer__grid > div:last-child { grid-column: 1 / -1; }
  .footer__qrcode { padding: 12px 14px; gap: 12px; }
  .footer__qrcode-placeholder { width: 54px; height: 54px; font-size: 1.4rem; }
  .footer__qrcode span { font-size: 0.74rem; line-height: 1.45; }
  .footer__desc { font-size: 0.8rem; line-height: 1.6; margin-bottom: 16px;
                  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
                  overflow: hidden; }
  .footer__social a { width: 32px; height: 32px; }
  .footer__partners { padding: 16px 0; }
  .partner-bar { flex-direction: column; align-items: flex-start; gap: 8px; }
  .partner-bar__links { gap: 6px 14px; }
  .partner-bar__links a { font-size: 0.75rem; }
  .footer__brand-desc { font-size: 0.82rem; }
  .footer__col-title { font-size: 0.9rem; margin-bottom: 10px; }
  .footer__contact-item { font-size: 0.78rem; }
  .footer__bottom { padding: 14px 0; }
  .footer__bottom-inner { flex-direction: column; text-align: center; gap: 6px; font-size: 0.72rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  /* "50000+" 这类数字在窄屏 min-content 超过列宽，
     会把整页撑出横向滚动（320/360px 尤其明显） */
  .stat-item { min-width: 0; padding: 14px 8px; }
  .stat-item__number { font-size: 1.5rem; }
  .stat-item__unit { font-size: 0.85rem; }
  .stat-item__label { font-size: 0.72rem; margin-top: 6px; }
  .hero__slide-title { font-size: 1.3rem; }
  .section-title { font-size: 1.3rem; }
  .cta-card__title { font-size: 1.2rem; }
  .cta-card__actions { flex-direction: column; }
}