/* ============================================
   川壹智能科技｜官网设计系统 v1.0
   科技工业风 · 蓝灰主色调 · 轻量化响应式
   ============================================ */

/* ---------- 1. CSS 变量（设计令牌） ---------- */
:root {
  /* 品牌色 */
  --brand-deep: #0E2A47;          /* 深蓝灰（主背景、标题） */
  --brand-primary: #1E6BFF;       /* 科技蓝（主色/CTA） */
  --brand-primary-dark: #0A4AC9;
  --brand-light: #4A9EFF;         /* 浅蓝（辅助） */
  --brand-accent: #00C896;        /* 节能绿（点缀/数据） */
  --brand-orange: #FF7A45;        /* 警示橙（强调） */

  /* 中性色 */
  --gray-50: #F5F7FA;
  --gray-100: #E8ECF2;
  --gray-200: #D0D7E2;
  --gray-300: #A4B0C2;
  --gray-500: #6B7A93;
  --gray-700: #344659;
  --gray-900: #1A2333;

  /* 文字 */
  --text-primary: #1A2333;
  --text-secondary: #6B7A93;
  --text-on-dark: #FFFFFF;
  --text-on-dark-muted: rgba(255, 255, 255, 0.72);

  /* 背景 */
  --bg-body: #FFFFFF;
  --bg-section: #F5F7FA;
  --bg-dark: #0E2A47;
  --bg-darker: #081A30;
  --bg-gradient: linear-gradient(135deg, #0E2A47 0%, #16407A 100%);
  --bg-gradient-blue: linear-gradient(135deg, #1E6BFF 0%, #4A9EFF 100%);
  --bg-tech: linear-gradient(135deg, #0A4AC9 0%, #00C896 200%);

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(14, 42, 71, 0.06);
  --shadow-md: 0 8px 24px rgba(14, 42, 71, 0.08);
  --shadow-lg: 0 16px 48px rgba(14, 42, 71, 0.12);
  --shadow-blue: 0 8px 24px rgba(30, 107, 255, 0.24);

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;
  --space-11: 160px;

  /* 画廊左右大留白（参考 SU7 风格）：移动 20px / 平板 40px / 桌面 100px */
  --gallery-side-pad: clamp(20px, 5vw, 100px);
  --space-10: 128px;

  /* 容器 */
  --container: 1280px;
  --container-narrow: 960px;

  /* 过渡 */
  --t-fast: 0.18s ease;
  --t-base: 0.28s ease;
  --t-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 字体 */
  --font-base: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, Menlo, monospace;
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: 22px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea { font-family: inherit; font-size: inherit; }

/* ---------- 3. 通用排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(32px, 4.5vw, 56px); letter-spacing: -0.02em; }
h2 { font-size: clamp(42px, 4.8vw, 62px); }
h3 { font-size: clamp(22px, 2.5vw, 28px); }
h4 { font-size: 20px; }
h5 { font-size: 22px; }
h6 { font-size: 16px; }

p { color: var(--text-secondary); line-height: 1.75; }

.text-gradient {
  background: var(--bg-gradient-blue);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  /* 修复：让 background-clip: text 的行内 span 在断行时按字符正常换行，
     不再被当作"一个图形 token"整块推到下一行（修"25 年"被拆开的问题） */
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  padding: 0 2px;
  margin: 0 -2px;
}

/* ---------- 4. 容器 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container--narrow { max-width: var(--container-narrow); }

/* ---------- 5. 头部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  transition: all var(--t-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-logo__mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  color: var(--brand-deep);
  font-weight: 800; font-size: 20px;
  letter-spacing: -0.04em;
}

.brand-logo__text {
  display: flex; flex-direction: column;
  line-height: 1.15;
}

.brand-logo__name {
  font-size: 17px; font-weight: 700; color: var(--brand-deep);
  letter-spacing: -0.01em;
}

.brand-logo__sub {
  font-size: 11px; color: var(--text-secondary);
  letter-spacing: 0.06em;
}

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

.main-nav__item {
  position: relative;
}

.main-nav__link {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--t-fast);
}

.main-nav__link:hover,
.main-nav__link.is-active {
  color: var(--brand-primary);
  background: rgba(30, 107, 255, 0.06);
}

.main-nav__item--has-children > .main-nav__link::after {
  content: '';
  display: inline-block;
  width: 0; height: 0;
  margin-left: 6px;
  vertical-align: middle;
  border: 4px solid transparent;
  border-top-color: currentColor;
  border-bottom: 0;
}

/* 二级菜单 */
.main-nav__sub {
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 200px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0; visibility: hidden;
  transition: all var(--t-base);
  border: 1px solid var(--gray-100);
}

.main-nav__item--has-children:hover .main-nav__sub,
.main-nav__item--has-children.is-open .main-nav__sub {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.main-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--t-fast);
}

.main-nav__sub a:hover {
  background: rgba(30, 107, 255, 0.08);
  color: var(--brand-primary);
}

/* 导航右侧 */
.header-cta {
  display: flex; align-items: center; gap: 12px;
}

/* 移动端汉堡 */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  position: relative;
  z-index: 100;
}

.nav-toggle span {
  position: absolute;
  left: 8px; right: 8px;
  height: 2px;
  background: var(--brand-deep);
  border-radius: 1px;
  transition: all var(--t-base);
}
.nav-toggle span:nth-child(1) { top: 13px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 25px; }
.nav-toggle.is-open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: all var(--t-base);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1;
}

.btn--primary {
  background: var(--brand-primary);
  color: white;
  box-shadow: var(--shadow-blue);
}
.btn--primary:hover {
  background: var(--brand-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(30, 107, 255, 0.32);
}

.btn--ghost {
  background: transparent;
  color: var(--brand-deep);
  border-color: var(--gray-200);
}
.btn--ghost:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(30, 107, 255, 0.04);
}

.btn--ghost-light {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.4);
}
.btn--ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: white;
}

/* 深色描边胶囊（参考美的产品卡：了解详情 按钮） */
.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--gray-700);
}
.btn--outline:hover {
  background: var(--text-primary);
  color: white;
  border-color: var(--text-primary);
}

.btn--lg { padding: 16px 36px; font-size: 16px; }
.btn--sm { padding: 10px 20px; font-size: 14px; }

.btn-arrow::after {
  content: '→';
  transition: transform var(--t-fast);
}
.btn-arrow:hover::after { transform: translateX(4px); }

/* ---------- 7. 区块通用 ---------- */
.section { padding: var(--space-9) 0; }
.section--tight { padding: var(--space-8) 0; }
.section--dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 {
  color: var(--text-on-dark);
}
.section--dark p { color: var(--text-on-dark-muted); }
.section--gray { background: var(--bg-section); }

.section-header {
  text-align: center;
  max-width: 960px;
  margin: 0 auto var(--space-8);
}

.section-header__eyebrow {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-primary);
  background: rgba(30, 107, 255, 0.1);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-4);
  letter-spacing: 0.04em;
}

.section--dark .section-header__eyebrow {
  color: var(--brand-accent);
  background: rgba(0, 200, 150, 0.15);
}

.section-header__title { margin-bottom: var(--space-4); white-space: nowrap; }
.section-header__desc { font-size: 25px; }

.section-header--left {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}

/* ---------- 8. Hero 三 Banner 轮播（图片+文字一体） ---------- */
.hero {
  position: relative;
  width: 100%;
  aspect-ratio: 1920 / 823;       /* 21:9，固定比例 */
  max-height: 88vh;
  overflow: hidden;
  background: var(--bg-gradient);
  margin-top: 76px;                /* 顶部导航高度 */
}

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

.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
  display: block;
  z-index: 1;
}

.hero__slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

/* 左右切换箭头 */
.hero__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  font-size: 28px;
  font-weight: 300;
  line-height: 1;
  display: grid;
  place-items: center;
  transition: all var(--t-base);
  cursor: pointer;
  font-family: inherit;
}

.hero__arrow:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--brand-accent);
  color: var(--brand-accent);
}

.hero__arrow--prev { left: 24px; }
.hero__arrow--next { right: 24px; }

/* 指示器 */
.hero__indicators {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.hero__indicators button {
  width: 36px;
  height: 7px;
  padding: 0;
  background: rgba(255, 255, 255, 0.35);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--t-base), width var(--t-base);
  font: inherit;
}

.hero__indicators button:hover { background: rgba(255, 255, 255, 0.6); }

.hero__indicators button.is-active {
  background: var(--brand-accent);
  width: 64px;
}

/* ---------- 9. 数据快览 ---------- */
.data-strip {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-7);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  position: relative;
  z-index: 10;
  margin-top: -80px;
  border: 1px solid var(--gray-100);
}

.data-strip__item {
  text-align: center;
  padding: 0 var(--space-3);
  position: relative;
}

.data-strip__item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -16px; top: 20%; bottom: 20%;
  width: 1px;
  background: var(--gray-100);
}

.data-strip__num {
  font-size: 44px;
  font-weight: 800;
  background: var(--bg-gradient-blue);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.data-strip__num .unit { font-size: 22px; color: var(--brand-primary); margin-left: 4px; -webkit-text-fill-color: var(--brand-primary); }

.data-strip__label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ---------- 10. 卡片 ---------- */
.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  transition: all var(--t-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 107, 255, 0.2);
}

.card__icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  display: grid; place-items: center;
  font-size: 24px; font-weight: 700;
  background: rgba(30, 107, 255, 0.1);
  color: var(--brand-primary);
  margin-bottom: var(--space-4);
}

.card__title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.card__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-primary);
  font-weight: 600;
  font-size: 14px;
  transition: gap var(--t-fast);
}

.card__link:hover { gap: 10px; }

/* 产品卡 */
.product-card {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  transition: all var(--t-base);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 107, 255, 0.3);
}

.product-card__visual {
  position: relative;
  height: 220px;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: var(--bg-gradient);
  color: white;
}

.product-card--blue .product-card__visual { background: var(--bg-gradient); }
.product-card--green .product-card__visual { background: linear-gradient(135deg, #00805F 0%, #00C896 100%); }
.product-card--cyan .product-card__visual { background: linear-gradient(135deg, #0A4AC9 0%, #00C8B0 100%); }

.product-card__visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.product-card__visual-icon {
  font-size: 64px;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.product-card__tag {
  position: absolute;
  top: 16px; left: 16px;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  z-index: 3;
}

.product-card__body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card__name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-card__sub {
  font-size: 13px;
  color: var(--brand-primary);
  font-weight: 600;
  margin-bottom: var(--space-3);
  letter-spacing: 0.02em;
}

.product-card__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  flex: 1;
}

.product-card__meta {
  display: flex;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
}

.product-card__meta-item {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
}

.product-card__meta-item strong {
  display: block;
  font-size: 22px;
  color: var(--brand-primary);
  font-weight: 800;
  margin-bottom: 2px;
}

/* 产品图片墙（首页 7 大产品横向滚动，无轮播；卡片样式：上图 + 下描述） */
.product-wall { position: relative; padding: 0 22px; }
.product-wall__track {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 4px 0 var(--space-3);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--gray-200) transparent;
}
.product-wall__track::-webkit-scrollbar { height: 6px; }
.product-wall__track::-webkit-scrollbar-track { background: transparent; }
.product-wall__track::-webkit-scrollbar-thumb { background: var(--gray-200); border-radius: 3px; }
.product-wall__item {
  flex: 0 0 calc((100% - var(--space-4) * 2) / 3);
  min-width: 300px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--t-base);
  position: relative;
}
.product-wall__item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(30, 107, 255, 0.2); }
.product-wall__visual {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-gradient);
  flex-shrink: 0;
}
.product-wall__img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--t-base);
}
.product-wall__item:hover .product-wall__img { transform: scale(1.05); }
.product-wall__tag {
  position: absolute; top: 12px; left: 12px;
  padding: 4px 12px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-pill);
  font-size: 12px; font-weight: 600;
  color: white;
  z-index: 2;
}
.product-wall__body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-wall__name {
  font-size: 22px; font-weight: 700;
  margin-bottom: 4px;
  line-height: 1.3;
  color: var(--text-primary);
}
.product-wall__sub {
  font-size: 12px; color: var(--brand-primary);
  font-family: var(--font-mono);
  margin-bottom: var(--space-3);
  font-weight: 600;
}
.product-wall__desc {
  font-size: 13px; color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-wall__meta {
  display: flex; gap: var(--space-3);
  padding-top: var(--space-3);
  margin-top: var(--space-3);
  border-top: 1px dashed var(--gray-200);
}
.product-wall__meta-item {
  flex: 1; text-align: center;
  font-size: 11px; color: var(--text-secondary);
}
.product-wall__meta-item strong {
  display: block;
  font-size: 16px; color: var(--brand-primary);
  font-weight: 800;
  margin-bottom: 2px;
}
/* 左右按钮（对着图区中心：visual 高度 200px / 2 = 100px） */
.product-wall__nav {
  position: absolute; top: 100px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: white;
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow-md);
  display: grid; place-items: center;
  cursor: pointer;
  z-index: 5;
  transition: all var(--t-fast);
  color: var(--text-primary);
  font-size: 22px; line-height: 1;
  transform: translateY(-50%);
}
.product-wall__nav:hover { background: var(--brand-primary); color: white; border-color: var(--brand-primary); }
.product-wall__nav--prev { left: 0; }
.product-wall__nav--next { right: 0; }
.product-wall__nav:disabled { opacity: 0.3; cursor: not-allowed; pointer-events: none; }

/* 隐藏滚动条（仅限带 product-wall--no-scrollbar 的区块，不影响首页轮播） */
.product-wall--no-scrollbar .product-wall__track { scrollbar-width: none; -ms-overflow-style: none; }
.product-wall--no-scrollbar .product-wall__track::-webkit-scrollbar { display: none; height: 0; }

/* 移动端：单列显示 + 按钮变小 */
@media (max-width: 768px) {
  .product-wall { padding: 0 12px; }
  .product-wall__item { flex: 0 0 80%; min-width: 0; }
  .product-wall__nav { width: 36px; height: 36px; font-size: 16px; }
}

/* ---------- 10b. 产品矩阵（参考美的：浅灰大圆角卡 + 1:1 边缘对齐） ---------- */
.pmatrix {
  display: flex;
  flex-direction: column;
  gap: var(--space-7);
}
.pmatrix__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
  background: #EFF1F4;
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: box-shadow var(--t-base);
}
.pmatrix__row:hover { box-shadow: var(--shadow-md); }
.pmatrix__row--reverse { grid-template-columns: 1fr 1fr; }
.pmatrix__row--reverse .pmatrix__visual { order: 2; }
.pmatrix__row--reverse .pmatrix__body { order: 1; }

/* 视觉区：图占一半，铺满整块（无内边距、无圆角） */
.pmatrix__visual {
  position: relative;
  min-height: 460px;
  overflow: hidden;
}
.pmatrix__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--t-slow);
}
.pmatrix__row:hover .pmatrix__img { transform: scale(1.04); }

/* 文字区：自带内边距，垂直居中 */
.pmatrix__body {
  padding: 64px 72px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.pmatrix__title {
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.pmatrix__tagline {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}
.pmatrix__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}
/* 特性：单列竖排，配色更克制（参考美的不放 4 个勾，用 3-4 行小字描述） */
.pmatrix__features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: var(--space-6);
}
.pmatrix__feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-primary);
}
.pmatrix__feature::before {
  content: '';
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-accent);
}
/* CTA：参考美的"价格 + 按钮"两段式 */
.pmatrix__cta {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.pmatrix__price {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.pmatrix__price-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}
.pmatrix__price-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.pmatrix__price-value small {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-left: 4px;
}

/* 移动端：上下堆叠 */
@media (max-width: 768px) {
  .pmatrix__row,
  .pmatrix__row--reverse {
    grid-template-columns: 1fr;
  }
  .pmatrix__row--reverse .pmatrix__visual { order: -1; }
  .pmatrix__visual { min-height: 300px; }
  .pmatrix__body { padding: 36px 24px; }
  .pmatrix__title { font-size: 26px; }
  .pmatrix__cta { gap: 20px; }
}

/* ---------- 10c. 关键数据 KPI 横幅图（比 container 略宽） ---------- */
.kpi-wrap {
  max-width: 1800px;       /* 比 .container 的 1280px 宽出 520px（左右各 260px） */
  margin: 0 auto;
  padding: 0 var(--space-3);
}
.kpi-banner {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* ---------- 11. 优势栏 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.feature-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  transition: all var(--t-base);
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 200, 150, 0.3);
  transform: translateX(4px);
}

.feature-item__icon {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: grid; place-items: center;
  background: rgba(0, 200, 150, 0.15);
  color: var(--brand-accent);
  font-size: 22px;
}

.feature-item__title {
  color: white;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-item__desc {
  color: var(--text-on-dark-muted);
  font-size: 13px;
  line-height: 1.65;
}

/* ---------- 12. 场景标签云 ---------- */
.scenario-cloud {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-3);
}

.scenario-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 18px 16px;
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  transition: all var(--t-base);
  text-align: center;
  cursor: default;
}

.scenario-tag:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(30, 107, 255, 0.04);
  transform: translateY(-2px);
}

.scenario-tag__icon { font-size: 22px; }

/* ---------- 13. 新闻卡 ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.news-card {
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  transition: all var(--t-base);
}

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

.news-card__cover {
  height: 180px;
  position: relative;
  overflow: hidden;
  background: var(--bg-section);
}

.news-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.news-card:hover .news-card__cover img {
  transform: scale(1.05);
}

.news-card__body { padding: var(--space-4); }

.news-card__meta {
  display: flex; align-items: center;
  gap: var(--space-2);
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--text-secondary);
}

.news-card__cat {
  padding: 2px 10px;
  background: rgba(30, 107, 255, 0.1);
  color: var(--brand-primary);
  border-radius: var(--radius-pill);
  font-weight: 600;
}

.news-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card__excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 14. CTA 转化区 ---------- */
.cta-block {
  position: relative;
  background: var(--bg-gradient);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-7);
  color: white;
  overflow: hidden;
  text-align: center;
}

.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0, 200, 150, 0.2), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(74, 158, 255, 0.3), transparent 50%);
}

.cta-block > * { position: relative; z-index: 2; }

.cta-block__title {
  font-size: clamp(26px, 3vw, 36px);
  color: white;
  margin-bottom: var(--space-4);
  font-weight: 800;
  white-space: nowrap;
}

.cta-block__desc {
  color: var(--text-on-dark-muted);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto var(--space-6);
}

.cta-block__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.cta-block__contact {
  display: flex;
  justify-content: center;
  gap: var(--space-7);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  flex-wrap: wrap;
}

.cta-block__contact-item {
  text-align: center;
}

.cta-block__contact-label {
  font-size: 12px;
  color: var(--text-on-dark-muted);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.cta-block__contact-value {
  font-size: 22px;
  font-weight: 800;
  color: white;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  background: var(--bg-darker);
  color: var(--text-on-dark);
  padding-top: var(--space-7);
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1.1fr 0.9fr 0.9fr 1.1fr;
  gap: var(--space-6);
  padding-bottom: 0;
  /* 默认 stretch：让所有列等高（= 最高列），左右底部齐平 */
}

/* 左列：flex 列布局，"介绍" 用 margin-bottom: auto 把"联系方式"推到底部
   这样"标题+介绍"组紧贴顶部，"联系方式"贴底，中间留白自然分布 */
.footer-brand {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.footer-brand__desc {
  margin-bottom: auto;
}

.footer-brand__contact {
  padding-top: 8px;
}

/* 品牌名 / 列标题共用：统一字号 + 左侧节能绿短竖线，视觉拉齐 */
.footer-brand__name,
.footer-col__title {
  position: relative;
  color: white;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: var(--space-5);
  letter-spacing: 0.04em;
  padding-left: 12px;
  line-height: 1.4;
}

.footer-brand__name::before,
.footer-col__title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: var(--brand-accent);
}

.footer-brand__desc {
  color: var(--text-on-dark-muted);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: var(--space-5);
  max-width: 320px;
}

/* 联系方式：放大字号 + 放大图标，不加卡片/背景 */
.footer-brand__contact {
  font-size: 15px;
  color: var(--text-on-dark-muted);
  line-height: 2.2;
}

/* 联系方式：每行前面用伪元素画小图标（手机/电话/信封/定位） */
.footer-brand__contact > div {
  position: relative;
  padding-left: 32px;
}

.footer-brand__contact > div::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 20px;
  height: 20px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 20px 20px;
  opacity: 0.95;
}

.footer-brand__contact > div:nth-child(1)::before {
  /* 联系方式：手机图标 */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='%2300C896' d='M17 1H7a2 2 0 0 0-2 2v18a2 2 0 0 0 2 2h10a2 2 0 0 0 2-2V3a2 2 0 0 0-2-2zm-5 21a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3zM17 18H7V4h10v14z'/></svg>");
}

.footer-brand__contact > div:nth-child(2)::before {
  /* 服务热线：座机/电话图标 */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='%2300C896' d='M20 15.5a11.36 11.36 0 0 1-2.57-.29 1 1 0 0 0-1.02.24l-2.2 2.2a15.07 15.07 0 0 1-6.59-6.58l2.2-2.21a1 1 0 0 0 .25-1.02A11.36 11.36 0 0 1 8.5 4a1 1 0 0 0-1-1H4a1 1 0 0 0-1 1 17 17 0 0 0 17 17 1 1 0 0 0 1-1v-3.5a1 1 0 0 0-1-1z'/></svg>");
}

.footer-brand__contact > div:nth-child(3)::before {
  /* 商务邮箱：信封图标 */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='%2300C896' d='M20 4H4a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h16a2 2 0 0 0 2-2V6a2 2 0 0 0-2-2zm0 4-8 5-8-5V6l8 5 8-5z'/></svg>");
}

.footer-brand__contact > div:nth-child(4)::before {
  /* 公司地址：定位图标 */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='%2300C896' d='M12 2a8 8 0 0 0-8 8c0 5.25 7 11.5 7.3 11.76a1 1 0 0 0 1.4 0C13 21.5 20 15.25 20 10a8 8 0 0 0-8-8zm0 11a3 3 0 1 1 0-6 3 3 0 0 1 0 6z'/></svg>");
}

.footer-brand__contact strong { color: white; font-weight: 700; margin-right: 4px; }

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }

.footer-col a {
  position: relative;
  display: inline-block;
  color: var(--text-on-dark-muted);
  font-size: 14px;
  line-height: 1.5;
  padding-left: 0;
  transition: color var(--t-fast), padding-left var(--t-fast);
}

.footer-col a::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--brand-accent);
  transition: width var(--t-fast);
}

.footer-col a:hover { color: var(--brand-accent); padding-left: 14px; }
.footer-col a:hover::before { width: 8px; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-5) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: 13px;
  color: var(--text-on-dark-muted);
}

.footer-bottom a { color: var(--text-on-dark-muted); }
.footer-bottom a:hover { color: var(--brand-accent); }

.footer-bottom__legal { display: flex; gap: var(--space-5); }

/* ---------- 16. 通用工具类 ---------- */
.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-7 { margin-top: var(--space-7); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-7 { margin-bottom: var(--space-7); }

.text-center { text-align: center; }
.flex { display: flex; }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

/* 滚动显隐动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

/* 右侧悬浮客服工具栏 */
.side-tools {
  position: fixed;
  right: 20px;
  bottom: 80px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 52px;
  background: var(--brand-primary);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(15, 33, 68, 0.18);
  /* 整体默认隐藏，滚动后由 JS 加 .is-visible 显示 */
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--t-base), transform var(--t-base), visibility var(--t-base);
}

.side-tools.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.side-tools__btn {
  width: 100%;
  height: 52px;
  display: grid;
  place-items: center;
  background: transparent;
  color: #fff;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  transition: background var(--t-base);
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.side-tools__btn svg {
  width: 22px;
  height: 22px;
  display: block;
}

.side-tools__btn:hover,
.side-tools__btn:focus-visible {
  background: var(--brand-primary-dark);
}

/* 按钮之间 1px 浅色分隔线（被容器 overflow:hidden 裁掉两端） */
.side-tools__btn + .side-tools__btn,
.side-tools__wechat {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

/* 微信按钮容器（现在不再需要 relative，弹层已 portal 到 body） */
.side-tools__wechat {
  position: relative;
}

/* 微信二维码弹层：fixed 定位，由 JS 写入 top/right */
.side-tools__popover {
  position: fixed;
  z-index: 95;
  width: 180px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(15, 33, 68, 0.18);
  padding: 16px 14px 14px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px) scale(0.96);
  transform-origin: right center;
  transition: opacity var(--t-base), transform var(--t-base), visibility var(--t-base);
  pointer-events: none;
}

/* 弹层小三角（朝右指向工具栏） */
.side-tools__popover::after {
  content: "";
  position: absolute;
  right: -6px;
  top: 24px;
  width: 12px;
  height: 12px;
  background: #fff;
  transform: rotate(45deg);
  box-shadow: 2px -2px 4px rgba(15, 33, 68, 0.04);
  border-radius: 2px;
}

.side-tools__popover.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateX(0) scale(1);
  pointer-events: auto;
}

.side-tools__qr {
  width: 140px;
  height: 140px;
  margin: 0 auto 10px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--border-light, #E6EBF2);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.side-tools__qr img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.side-tools__qr-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary, #1A2A4A);
  margin-bottom: 2px;
}

.side-tools__qr-sub {
  font-size: 12px;
  color: var(--text-secondary, #5A6A85);
  line-height: 1.5;
}

/* 移动端：缩小并贴近边距，避免挡住正文 */
@media (max-width: 768px) {
  .side-tools { right: 12px; bottom: 60px; width: 46px; border-radius: 12px; }
  .side-tools__btn { height: 46px; }
  .side-tools__btn svg { width: 20px; height: 20px; }
  .side-tools__popover { width: 160px; padding: 12px 10px 10px; }
  .side-tools__qr { width: 120px; height: 120px; }
}

/* 兼容：保留旧 .back-to-top 类名兜底（如果其他页面还在用） */
.back-to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: white;
  display: grid; place-items: center;
  box-shadow: var(--shadow-blue);
  opacity: 0; visibility: hidden;
  transform: translateY(20px);
  transition: all var(--t-base);
  z-index: 99;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--brand-primary-dark); transform: translateY(-4px); }

/* ---------- 17. 内页 Hero（图片 banner） ---------- */
.page-hero {
  position: relative;
  min-height: 380px;
  aspect-ratio: 16 / 5;
  background: var(--bg-gradient);
  overflow: hidden;
}

/* 整张 banner 图铺满 */
.page-hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}

.breadcrumb a { color: var(--text-secondary); transition: color var(--t-fast); }
.breadcrumb a:hover { color: var(--brand-primary); }
.breadcrumb__sep { color: var(--gray-300); }
.breadcrumb__current { color: var(--text-primary); font-weight: 500; }

/* 深色 page-hero 内的面包屑：提亮文字以保证对比度 */
.page-hero .breadcrumb { color: rgba(255, 255, 255, 0.78); }
.page-hero .breadcrumb a { color: rgba(255, 255, 255, 0.78); }
.page-hero .breadcrumb a:hover { color: var(--brand-accent); }
.page-hero .breadcrumb__sep { color: rgba(255, 255, 255, 0.42); }
.page-hero .breadcrumb__current { color: #fff; font-weight: 500; }

/* ---------- 18. 时间线（发展历程） ---------- */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-7);
}

.timeline__item:last-child { padding-bottom: 0; }

.timeline__dot {
  position: absolute;
  left: -40px; top: 6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: white;
  border: 3px solid var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(30, 107, 255, 0.12);
}

.timeline__item--accent .timeline__dot {
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 4px rgba(0, 200, 150, 0.12);
}

.timeline__year {
  font-size: 28px;
  font-weight: 800;
  color: var(--brand-primary);
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.timeline__item--accent .timeline__year { color: var(--brand-accent); }

.timeline__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.timeline__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

/* ---------- 19. 手风琴（FAQ） ---------- */
.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}

.faq-item {
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  overflow: hidden;
  transition: all var(--t-base);
}

.faq-item:hover { border-color: rgba(30, 107, 255, 0.3); }
.faq-item.is-open { border-color: var(--brand-primary); box-shadow: var(--shadow-sm); }

.faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

.faq-item__q-tag {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 6px;
  background: rgba(30, 107, 255, 0.1);
  color: var(--brand-primary);
  display: grid; place-items: center;
  font-size: 12px;
  font-weight: 800;
}

.faq-item__q-text { flex: 1; }

.faq-item__q-icon {
  flex-shrink: 0;
  width: 24px; height: 24px;
  display: grid; place-items: center;
  color: var(--brand-primary);
  transition: transform var(--t-base);
  font-size: 22px;
}

.faq-item.is-open .faq-item__q-icon { transform: rotate(45deg); }

.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-base);
}

.faq-item__a-inner {
  padding: 0 24px 22px 60px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

@media (max-width: 768px) {
  .faq-list { grid-template-columns: 1fr; gap: 12px; }
  .faq-item__a-inner { padding: 0 20px 20px 52px; font-size: 14px; }
}

/* ---------- 20. 表单 ---------- */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-label__req { color: var(--brand-orange); }

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-primary);
  background: white;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: all var(--t-fast);
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(30, 107, 255, 0.1);
}

.form-control--textarea { min-height: 120px; resize: vertical; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

/* ---------- 21. 参数表 ---------- */
.param-table {
  width: 100%;
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--gray-100);
  border-collapse: separate;
  border-spacing: 0;
}

.param-table th,
.param-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--gray-100);
  font-size: 15px;
}

.param-table tr:last-child th,
.param-table tr:last-child td { border-bottom: none; }

.param-table th {
  background: var(--bg-section);
  color: var(--text-primary);
  font-weight: 700;
  width: 40%;
}

.param-table td { color: var(--text-secondary); }

.param-table tr:hover td { background: rgba(30, 107, 255, 0.02); }

/* ---------- 22. 标签页（Tabs） ---------- */
.tabs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--gray-100);
  padding-bottom: 0;
}

.tabs-nav__item {
  padding: 14px 24px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--t-fast);
  background: none;
  border-radius: 0;
  font-family: inherit;
}

.tabs-nav__item:hover { color: var(--brand-primary); }
.tabs-nav__item.is-active {
  color: var(--brand-primary);
  border-bottom-color: var(--brand-primary);
}

.tabs-panel { display: none; }
.tabs-panel.is-active { display: block; }

/* ---------- 23. 内页通用工具 ---------- */
.content-block { max-width: var(--container-narrow); margin: 0 auto; }

.content-block p { margin-bottom: var(--space-4); line-height: 1.85; }
.content-block h2 { margin: var(--space-7) 0 var(--space-4); }
.content-block h3 { margin: var(--space-5) 0 var(--space-3); font-size: 22px; }
.content-block ul, .content-block ol { margin-bottom: var(--space-4); padding-left: 24px; list-style: disc; }
.content-block li { margin-bottom: 8px; color: var(--text-secondary); line-height: 1.75; }

/* 案例详情卡 */
.case-detail {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  margin-bottom: var(--space-5);
  transition: all var(--t-base);
}
.case-detail:hover { box-shadow: var(--shadow-md); }
.case-detail__head { padding: var(--space-5); border-bottom: 1px solid var(--gray-100); }
.case-detail__cat { display: inline-block; padding: 4px 12px; background: rgba(30, 107, 255, 0.1); color: var(--brand-primary); border-radius: var(--radius-pill); font-size: 12px; font-weight: 600; margin-bottom: var(--space-3); }
.case-detail__title { font-size: 22px; font-weight: 700; margin-bottom: var(--space-2); }
.case-detail__meta { display: flex; gap: var(--space-4); color: var(--text-secondary); font-size: 13px; }
.case-detail__body { padding: var(--space-5); }
.case-detail__challenge { margin-bottom: var(--space-4); padding: var(--space-4); background: var(--bg-section); border-left: 3px solid var(--brand-orange); border-radius: 4px; }
.case-detail__challenge-label { font-size: 12px; color: var(--brand-orange); font-weight: 700; margin-bottom: 4px; letter-spacing: 0.04em; }
.case-detail__solution { margin-bottom: var(--space-4); padding: var(--space-4); background: rgba(30, 107, 255, 0.04); border-left: 3px solid var(--brand-primary); border-radius: 4px; }
.case-detail__solution-label { font-size: 12px; color: var(--brand-primary); font-weight: 700; margin-bottom: 4px; letter-spacing: 0.04em; }
.case-detail__metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--space-3); margin-top: var(--space-4); }
.case-detail__metric { padding: var(--space-3); background: var(--bg-section); border-radius: var(--radius-sm); text-align: center; }
.case-detail__metric strong { display: block; font-size: 24px; font-weight: 800; color: var(--brand-accent); margin-bottom: 4px; }
.case-detail__metric span { font-size: 12px; color: var(--text-secondary); }

/* 行业分类网格 */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.industry-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  transition: all var(--t-base);
  cursor: pointer;
}
.industry-card:hover { border-color: var(--brand-primary); background: rgba(30, 107, 255, 0.04); transform: translateY(-2px); }
.industry-card__icon { font-size: 28px; }
.industry-card__name { font-weight: 600; }
.industry-card__count { font-size: 12px; color: var(--text-secondary); }

/* 资讯列表样式（用于 news.html 列表） */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.news-list__item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  transition: all var(--t-base);
}
.news-list__item:hover { border-color: var(--brand-primary); transform: translateX(4px); }

.news-list__cover {
  flex-shrink: 0;
  width: 200px;
  height: 130px;
  border-radius: var(--radius-sm);
  display: grid; place-items: center;
  font-size: 36px;
  color: white;
  background: var(--bg-gradient);
  overflow: hidden;
}
.news-list__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.news-list__body { flex: 1; min-width: 0; }
.news-list__meta { display: flex; gap: var(--space-3); align-items: center; margin-bottom: 8px; font-size: 12px; color: var(--text-secondary); }
.news-list__cat { padding: 2px 10px; background: rgba(30, 107, 255, 0.1); color: var(--brand-primary); border-radius: var(--radius-pill); font-weight: 600; }
.news-list__cat--green { background: rgba(0, 200, 150, 0.12); color: var(--brand-accent); }
.news-list__cat--orange { background: rgba(255, 122, 69, 0.12); color: var(--brand-orange); }
.news-list__title { font-size: 22px; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; line-height: 1.4; }
.news-list__excerpt { font-size: 14px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 服务区块（技术支持） */
.service-block {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  padding: var(--space-6);
  margin-bottom: var(--space-4);
  transition: all var(--t-base);
}
.service-block:hover { box-shadow: var(--shadow-md); border-color: rgba(30, 107, 255, 0.2); }
.service-block__head { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-4); padding-bottom: var(--space-4); border-bottom: 1px solid var(--gray-100); }
.service-block__num { flex-shrink: 0; width: 56px; height: 56px; border-radius: 50%; background: var(--bg-gradient-blue); color: white; display: grid; place-items: center; font-size: 22px; font-weight: 800; box-shadow: var(--shadow-blue); }
.service-block__title { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.service-block__sub { font-size: 14px; color: var(--text-secondary); }
.service-block__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 16px; }
.service-block__list li { display: flex; align-items: flex-start; gap: 8px; color: var(--text-secondary); font-size: 14px; line-height: 1.7; }
.service-block__list li::before { content: '✓'; color: var(--brand-accent); font-weight: 700; flex-shrink: 0; }

/* 产品线卡片网格（3 大核心产品 span 4 / 4 大改造服务 span 3，12 列精准对齐） */
.product-line-grid > .card:nth-child(-n+3) { grid-column: span 4; padding: var(--space-5); }
.product-line-grid > .card:nth-child(n+4) { grid-column: span 3; padding: var(--space-4); }

/* 联系页布局 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-6);
  align-items: start;
}

.contact-info-card {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  transition: all var(--t-base);
}
.contact-info-card:hover { border-color: var(--brand-primary); }
.contact-info-card__icon { flex-shrink: 0; width: 48px; height: 48px; border-radius: var(--radius-sm); background: rgba(30, 107, 255, 0.1); color: var(--brand-primary); display: grid; place-items: center; font-size: 22px; }
.contact-info-card__label { font-size: 13px; color: var(--text-secondary); margin-bottom: 4px; }
.contact-info-card__value { font-size: 22px; font-weight: 700; color: var(--text-primary); }
.contact-info-card__sub { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

.contact-form-card { background: white; border: 1px solid var(--gray-100); border-radius: var(--radius-lg); padding: var(--space-6); box-shadow: var(--shadow-sm); }

/* 价值观卡（4 格） */
.value-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
.value-card { padding: var(--space-5); background: white; border: 1px solid var(--gray-100); border-radius: var(--radius-md); transition: all var(--t-base); }
.value-card:hover { border-color: var(--brand-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.value-card__icon { width: 48px; height: 48px; border-radius: var(--radius-sm); background: rgba(30, 107, 255, 0.1); color: var(--brand-primary); display: grid; place-items: center; font-size: 22px; margin-bottom: var(--space-3); }
.value-card__name { font-size: 22px; font-weight: 800; color: var(--brand-primary); margin-bottom: 4px; letter-spacing: 0.05em; }
.value-card__title { font-size: 16px; font-weight: 700; margin-bottom: var(--space-2); }
.value-card__desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* 企业文化（左图 + 右编号列表，参考"我们的优势"版式） */
.culture-block { display: grid; grid-template-columns: 1fr 1.15fr; gap: var(--space-8); align-items: stretch; }
.culture-block__media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); min-height: 480px; }
.culture-block__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.culture-block__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(11, 28, 56, 0.45)); pointer-events: none; }
.culture-block__media-tag { position: absolute; left: 24px; bottom: 24px; z-index: 1; padding: 6px 14px; border-radius: 999px; background: rgba(255, 255, 255, 0.92); color: var(--brand-primary); font-size: 13px; font-weight: 600; letter-spacing: 0.05em; }
.culture-block__content { display: flex; flex-direction: column; justify-content: center; }
.culture-block__head { margin-bottom: var(--space-7); padding-bottom: var(--space-6); border-bottom: 1px solid var(--gray-100); }
.culture-block__title { font-size: 30px; font-weight: 800; color: var(--text-primary); letter-spacing: 0.02em; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.culture-block__sub { font-size: 13px; font-weight: 500; color: var(--gray-300); letter-spacing: 0.25em; font-family: var(--font-mono); }
.culture-block__desc { margin-top: var(--space-4); font-size: 22px; line-height: 1.85; color: var(--text-secondary); }
.culture-list { list-style: none; margin: 0; padding: 0; }
.culture-list__item { display: grid; grid-template-columns: 120px 1fr; gap: var(--space-4); padding: var(--space-2) 0; border-bottom: 1px solid var(--gray-100); }
.culture-list__item:last-child { border-bottom: none; padding-bottom: 0; }
.culture-list__item:first-child { padding-top: 0; }
.culture-list__num { font-size: 64px; font-weight: 800; line-height: 1; color: var(--gray-100); font-family: var(--font-mono); transition: color var(--t-base); }
.culture-list__item:hover .culture-list__num { color: var(--brand-primary); }
.culture-list__body { padding-top: 4px; }
.culture-list__label { font-size: 20px; font-weight: 800; color: var(--brand-primary); letter-spacing: 0.18em; margin-bottom: 4px; }
.culture-list__title { font-size: 22px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; line-height: 1.5; }
.culture-list__text { font-size: 17px; line-height: 1.8; color: var(--text-secondary); }
@media (max-width: 900px) {
  .culture-block { grid-template-columns: 1fr; gap: var(--space-5); }
  .culture-block__media { min-height: 280px; }
  .culture-block__title { font-size: 24px; }
  .culture-block__desc { font-size: 16px; }
  .culture-list__num { font-size: 52px; }
  .culture-list__title { font-size: 19px; }
  .culture-list__text { font-size: 15px; }
  .culture-list__label { font-size: 17px; }
}
@media (max-width: 520px) {
  .culture-list__item { grid-template-columns: 64px 1fr; gap: var(--space-3); padding: var(--space-2) 0; }
  .culture-list__num { font-size: 38px; }
  .culture-list__title { font-size: 17px; }
  .culture-list__text { font-size: 14px; }
  .culture-list__label { font-size: 15px; letter-spacing: 0.15em; }
}

/* 实力维度（5 格） */
.capability-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-3); }
.capability-card { padding: var(--space-4); background: white; border: 1px solid var(--gray-100); border-radius: var(--radius-md); text-align: center; transition: all var(--t-base); }
.capability-card:hover { border-color: var(--brand-primary); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.capability-card__icon { font-size: 44px; margin-bottom: 12px; line-height: 1; }
.capability-card__name { font-weight: 700; font-size: 22px; margin-bottom: 6px; }
.capability-card__desc { font-size: 15px; color: var(--text-secondary); line-height: 1.5; }

/* 品牌实力（4×2 卡片，参照"整套解决方案"样式） */
.strength-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }
.strength-card { background: white; border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: var(--space-6) var(--space-5); text-align: center; transition: all var(--t-base); display: flex; flex-direction: column; align-items: center; }
.strength-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(30, 107, 255, 0.25); }
.strength-card__icon { width: 56px; height: 56px; color: var(--brand-primary); margin-bottom: var(--space-3); display: grid; place-items: center; }
.strength-card__icon svg { width: 100%; height: 100%; }
.strength-card__name { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-bottom: 10px; }
.strength-card__desc { font-size: 14.5px; line-height: 1.75; color: var(--text-secondary); }

/* 荣誉资质：图片墙（5 列 × 2 行，真实证书风格） */
.honor-badges { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-3); margin-top: var(--space-5); }
.honor-badge { background: white; border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: var(--space-2); transition: all var(--t-base); overflow: hidden; }
.honor-badge:hover { border-color: var(--brand-primary); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.honor-badge img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; display: block; border-radius: var(--radius-sm); transition: transform var(--t-slow); }
.honor-badge:hover img { transform: scale(1.05); }

/* 产品化学药剂卡（5 张并列） */
.chemical-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.chemical-card { background: white; border-radius: var(--radius-md); border: 1px solid var(--gray-100); padding: var(--space-5); transition: all var(--t-base); }
.chemical-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(30, 107, 255, 0.2); }
.chemical-card__head { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-3); padding-bottom: var(--space-3); border-bottom: 1px dashed var(--gray-200); }
.chemical-card__num { width: 36px; height: 36px; border-radius: 8px; background: var(--bg-gradient-blue); color: white; display: grid; place-items: center; font-weight: 800; font-size: 16px; }
.chemical-card__name { font-size: 16px; font-weight: 700; }
.chemical-card__model { font-size: 12px; color: var(--text-secondary); font-family: var(--font-mono); margin-top: 2px; }
.chemical-card__desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* 首页"关于川壹"区块：左文案 + 右 2×2 图位 + 底部 4 实力卡 */
.about-top { display: grid; grid-template-columns: 1.2fr 1fr; gap: var(--space-7); align-items: start; }
.about-top__text { font-size: 16px; line-height: 2; color: var(--text-secondary); }
.about-top__lead { margin-bottom: var(--space-5); color: var(--text-primary); font-size: 19px; font-weight: 500; line-height: 1.7; }
.about-top__p { margin-bottom: var(--space-5); }
.about-top__cta { margin-bottom: var(--space-6); }

/* 单张图片展示位：等真图到位后，给 .gallery-slot 加 background-image: url(...) center/cover 即可 */
.about-gallery { display: block; }
.gallery-slot {
  position: relative;
  width: 100%;
  aspect-ratio: 5 / 3;
  border-radius: var(--radius-md);
  border: 2px dashed var(--gray-200);
  background: var(--bg-section);
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
  transition: all var(--t-base);
}
.gallery-slot::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(30, 107, 255, 0.04), rgba(0, 200, 150, 0.04));
  z-index: 0;
}
.gallery-slot__inner { position: relative; z-index: 1; padding: var(--space-3); }
.gallery-slot__icon { font-size: 32px; margin-bottom: 6px; }
.gallery-slot__label { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 2px; }
.gallery-slot__hint { font-size: 12px; color: var(--text-secondary); opacity: 0.7; }
.gallery-slot:hover { border-color: var(--brand-primary); transform: translateY(-2px); }

/* 底部 4 实力卡（横排） */
.about-strengths {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-7);
  padding-top: var(--space-6);
  border-top: 1px dashed var(--gray-200);
}
.about-strengths__item {
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
  padding: var(--space-5);
  text-align: center;
  transition: all var(--t-base);
}
.about-strengths__item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(30, 107, 255, 0.2); }
.about-strengths__icon { font-size: 28px; margin-bottom: 6px; }
.about-strengths__name { font-weight: 700; margin-bottom: 4px; }
.about-strengths__desc { font-size: 13px; color: var(--text-secondary); }

/* ---------- 24. Banner 编辑器（运营工具） ---------- */
.editor-page {
  min-height: 100vh;
  background: var(--bg-section);
  padding: 88px 0 0;
}

.editor-shell {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  align-items: start;
}

.editor-form {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  padding: var(--space-5);
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 108px);
  overflow-y: auto;
}

.editor-form__head {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--gray-100);
}

.editor-form__title {
  font-size: 22px;
  font-weight: 700;
  display: flex; align-items: center; gap: 8px;
}

.editor-form__title::before {
  content: '🎨';
  font-size: 22px;
}

.editor-form__hint {
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-section);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.editor-section { margin-bottom: var(--space-5); }
.editor-section__title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.editor-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.editor-thumb {
  position: relative;
  aspect-ratio: 21/9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--t-fast);
}

.editor-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

.editor-thumb__label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 4px 6px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: white;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
}

.editor-thumb.is-active {
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgba(0, 200, 150, 0.2);
}

.editor-upload {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-section);
  border-radius: var(--radius-sm);
  border: 1.5px dashed var(--gray-200);
  cursor: pointer;
  transition: all var(--t-fast);
}

.editor-upload:hover { border-color: var(--brand-primary); background: rgba(30, 107, 255, 0.04); }

.editor-upload input[type="file"] { display: none; }

.editor-upload__icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-gradient-blue);
  color: white;
  display: grid; place-items: center;
  font-size: 16px;
  flex-shrink: 0;
}

.editor-upload__text { flex: 1; min-width: 0; }
.editor-upload__text strong { display: block; font-size: 13px; }
.editor-upload__text small { font-size: 11px; color: var(--text-secondary); }

.editor-field { margin-bottom: var(--space-3); }
.editor-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.editor-field input,
.editor-field textarea,
.editor-field select {
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-primary);
  background: white;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: inherit;
  transition: all var(--t-fast);
}

.editor-field input:focus,
.editor-field textarea:focus,
.editor-field select:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(30, 107, 255, 0.1);
}

.editor-field textarea { min-height: 56px; resize: vertical; }

.editor-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.editor-radio-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: var(--bg-section);
  padding: 4px;
  border-radius: var(--radius-sm);
}

.editor-radio-group label {
  display: flex; align-items: center; justify-content: center;
  padding: 6px 4px;
  font-size: 12px; font-weight: 500;
  color: var(--text-secondary);
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--t-fast);
  text-align: center;
  margin: 0;
}

.editor-radio-group input { display: none; }

.editor-radio-group label.is-active {
  background: white;
  color: var(--brand-primary);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.editor-actions {
  display: flex; flex-direction: column; gap: 8px;
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
  margin-top: var(--space-4);
}

.editor-preview {
  position: sticky;
  top: 88px;
}

.editor-preview__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-3);
}

.editor-preview__title {
  font-size: 16px;
  font-weight: 700;
  display: flex; align-items: center; gap: 8px;
}

.editor-preview__title::before { content: '👁'; font-size: 20px; }

.editor-preview__hint {
  font-size: 12px;
  color: var(--text-secondary);
}

.editor-canvas-wrap {
  position: relative;
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
  padding: var(--space-3);
  box-shadow: var(--shadow-md);
}

.editor-canvas {
  position: relative;
  aspect-ratio: 21/9;
  width: 100%;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-gradient);
  background-size: cover;
  background-position: center;
  isolation: isolate;
}

.editor-canvas__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.editor-canvas__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(14, 42, 71, 0.92) 0%, rgba(14, 42, 71, 0.75) 50%, rgba(14, 42, 71, 0.5) 100%),
              linear-gradient(180deg, rgba(14, 42, 71, 0.4) 0%, rgba(14, 42, 71, 0.6) 100%);
  z-index: 1;
}

.editor-canvas__content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 6%;
}

.editor-canvas__content--center {
  justify-content: center;
  text-align: center;
}

.editor-canvas__content--left { justify-content: flex-start; }
.editor-canvas__content--right { justify-content: flex-end; text-align: right; }

.editor-canvas__inner { max-width: 60%; }

.editor-canvas__content--center .editor-canvas__inner { max-width: 75%; }

.editor-canvas__eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 200, 150, 0.15);
  border: 1px solid rgba(0, 200, 150, 0.3);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  color: #00C896;
  margin-bottom: 16px;
}

.editor-canvas__title {
  color: white;
  font-size: clamp(20px, 3.2vw, 42px);
  line-height: 1.18;
  font-weight: 800;
  margin-bottom: 14px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.editor-canvas__title .accent {
  background: linear-gradient(135deg, #4A9EFF 0%, #00C896 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.editor-canvas__desc {
  color: rgba(255, 255, 255, 0.85);
  font-size: clamp(11px, 1.2vw, 16px);
  line-height: 1.65;
  margin-bottom: 18px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
}

.editor-canvas__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.editor-canvas__content--center .editor-canvas__actions { justify-content: center; }
.editor-canvas__content--right .editor-canvas__actions { justify-content: flex-end; }

.editor-canvas__btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.editor-canvas__btn--primary { background: var(--brand-primary); color: white; }
.editor-canvas__btn--ghost { background: transparent; color: white; border: 1.5px solid rgba(255, 255, 255, 0.4); }

.editor-info {
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: rgba(0, 200, 150, 0.08);
  border: 1px solid rgba(0, 200, 150, 0.2);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.editor-info strong { color: var(--brand-accent); }

.editor-info code {
  background: white;
  padding: 1px 6px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brand-primary);
  border: 1px solid var(--gray-200);
}

/* 响应式：编辑器 */
@media (max-width: 1024px) {
  .editor-shell {
    grid-template-columns: 1fr;
  }
  .editor-form { position: static; max-height: none; }
  .editor-preview { position: static; }
}

/* ---------- 25. 响应式 ---------- */

/* 兜底：所有用 inline style 写的 grid（PC 多列布局）在窄屏下收为单列。
   原因：HTML 里大量 `<div style="display:grid;grid-template-columns:repeat(N,1fr)">` 直接写死列数，
   媒体查询的 class 选择器压不住 inline style，所以用 attribute selector + !important 兜底。
   真正干净的做法是把这些 inline 改成 class，但工作量较大，等静态设计阶段结束后再统一重构。 */
@media (max-width: 1024px) {
  [style*="repeat(3, 1fr)"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="repeat(4, 1fr)"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="repeat(5, 1fr)"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="repeat(6, 1fr)"] { grid-template-columns: repeat(3, 1fr) !important; }
  [style*="grid-template-columns: 1.1fr 1fr"] { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns: 1.2fr 1fr"] { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns: 1fr 1.2fr"] { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns: 1fr 1fr"] { grid-template-columns: 1fr !important; }
}

@media (max-width: 768px) {
  [style*="repeat(2, 1fr)"] { grid-template-columns: 1fr !important; }
  [style*="repeat(3, 1fr)"] { grid-template-columns: 1fr !important; }
  [style*="repeat(4, 1fr)"] { grid-template-columns: 1fr !important; }
  [style*="repeat(5, 1fr)"] { grid-template-columns: 1fr !important; }
  [style*="repeat(6, 1fr)"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="grid-template-columns: 1.1fr 1fr"] { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns: 1.2fr 1fr"] { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns: 1fr 1.2fr"] { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns: 1fr 1fr"] { grid-template-columns: 1fr !important; }
}

@media (max-width: 480px) {
  [style*="repeat(6, 1fr)"] { grid-template-columns: 1fr !important; }
}


@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-cloud { grid-template-columns: repeat(4, 1fr); }
  .data-strip { grid-template-columns: repeat(2, 1fr); padding: var(--space-5); }
  .data-strip__item:not(:last-child)::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: var(--space-7) 0; }

  /* nav-toggle 改 fixed 定位，避免被 .site-header 的 backdrop-filter
     + 0.96 白色背景遮住（之前是 position: relative，在 .header-inner flex
     容器内，被父级 stacking context 压在背景之下） */
  .nav-toggle {
    display: block;
    position: fixed;
    top: 18px;
    right: 16px;
    z-index: 1100;          /* > .site-header 的 1000，确保汉堡按钮永远可见 */
    width: 40px;
    height: 40px;
  }

  /* main-nav 显式 width/height 撑满视口（之前用 inset 简写，在某些
     浏览器下 flex column + 没有内容时高度会塌缩，菜单点开只看到顶部一小条） */
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    width: 100vw;
    height: calc(100vh - 76px);
    background: white;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-5);
    transform: translateX(100%);
    transition: transform var(--t-base);
    overflow-y: auto;
    z-index: 99;
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav__item { width: 100%; }
  .main-nav__link { padding: 14px 16px; font-size: 16px; border-bottom: 1px solid var(--gray-100); border-radius: 0; }
  .main-nav__sub {
    position: static;
    transform: none;
    box-shadow: none;
    background: var(--gray-50);
    margin-top: 4px;
    border-radius: var(--radius-sm);
    max-height: 0;
    padding: 0;
    overflow: hidden;
    transition: max-height var(--t-base), padding var(--t-base);
  }
  .main-nav__item--has-children.is-open .main-nav__sub {
    max-height: 500px;
    padding: 8px;
    opacity: 1; visibility: visible;
  }
  .header-cta { display: none; }

  /* hero 移动端改 4:5 比例 + 去掉 min-height，让 banner 图按容器比例
     缩放而不是被强行拉成 560px 高（之前 1920:823 横图在窄屏被严重裁切） */
  .hero {
    aspect-ratio: 4 / 5;
    max-height: none;
    min-height: 360px;
    margin-top: 76px;  /* 在 header 下方 */
  }
  .hero__img {
    object-position: center;  /* 居中显示，避免关键文字被边缘裁切 */
  }
  .hero__inner { padding: var(--space-7) 0; }
  .hero__title { font-size: 28px; }
  .hero__desc { font-size: 16px; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
  .hero__stat-num { font-size: 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .scenario-cloud { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .data-strip { grid-template-columns: 1fr 1fr; margin-top: -60px; }
  .cta-block__contact { flex-direction: column; gap: var(--space-4); }

  /* 首页"关于川壹"：窄屏左文案 + 右图位 → 上下堆叠；底部 4 实力卡 → 2×2 */
  .about-top { grid-template-columns: 1fr; }
  .about-strengths { grid-template-columns: repeat(2, 1fr); }

  /* 荣誉资质：768 窄屏图片墙 4 列 → 2 列 */
  .honor-badges { grid-template-columns: repeat(2, 1fr); }

  /* 品牌实力 4 列卡片：窄屏 → 2×2 */
  .strength-grid { grid-template-columns: repeat(2, 1fr); }

  /* 移动端允许标题自然换行，避免溢出屏幕 */
  .section-header__title { white-space: normal; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  .data-strip { grid-template-columns: 1fr; }
  .data-strip__item { padding: var(--space-3) 0; }
  .scenario-cloud { grid-template-columns: repeat(2, 1fr); }
  .hero__stats { grid-template-columns: 1fr; text-align: left; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }

  /* 首页"关于川壹"：超窄屏底部实力卡也单列展示 */
  .about-strengths { grid-template-columns: 1fr; }

  /* 荣誉资质：超窄屏 2 列 → 单列，让每张图更大 */
  .honor-badges { grid-template-columns: 1fr; }

  /* 品牌实力：超窄屏 2 列 → 单列 */
  .strength-grid { grid-template-columns: 1fr; }

  /* 超窄屏 CTA 标题也允许换行 */
  .cta-block__title { white-space: normal; }
}

/* =====================================================
   客户案例页：分类 Tab + 卡片网格 + 翻页器
   ===================================================== */
.cases-section { padding-top: var(--space-8); padding-bottom: var(--space-9); }

/* 强制 [hidden] 生效：避免被 .case-card{display:flex} 覆盖 */
.cases-grid [hidden] { display: none !important; }

/* 分类 Tab 条 */
.cases-tabs {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  margin: 0 auto var(--space-7);
  padding: var(--space-2);
  background: #EFF1F4;
  border-radius: var(--radius-pill);
  max-width: 760px;
  flex-wrap: wrap;
}
.cases-tab {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 10px 28px;
  border-radius: var(--radius-pill);
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
  font-family: inherit;
}
.cases-tab:hover { color: var(--brand-deep); }
.cases-tab.is-active {
  background: #ffffff;
  color: var(--brand-deep);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(14, 42, 71, 0.06);
}

/* 卡片网格：4 列 × 2 行 = 8 / 页 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-7);
}

/* 卡片 */
.case-card {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--gray-100);
  border-radius: 6px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}
.case-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(14, 42, 71, 0.08);
  border-color: var(--brand-light);
}
.case-card__cover {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #e8ecf2;
  overflow: hidden;
}
.case-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.case-card:hover .case-card__cover img {
  transform: scale(1.04);
}
/* 占位（图片加载失败/未生成）的兜底 */
.case-card__cover--placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(14, 42, 71, 0.5);
  font-size: 13px;
  font-weight: 500;
}

.case-card__body {
  padding: var(--space-4) var(--space-4) var(--space-5);
  flex: 1;
}
.case-card__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-deep);
  margin: 0 0 6px;
  line-height: 1.4;
  /* 单行省略：标题长也不撑高 */
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
.case-card__desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 空状态 */
.cases-empty {
  grid-column: 1 / -1;
  padding: var(--space-9) 0;
  text-align: center;
  color: var(--text-secondary);
}
.cases-empty__icon { font-size: 48px; margin-bottom: var(--space-3); opacity: 0.6; }
.cases-empty__text { font-size: 15px; }

/* 翻页器 */
.cases-pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}
.cases-pager__btn {
  appearance: none;
  min-width: 44px;
  height: 38px;
  padding: 0 14px;
  border: 1px solid var(--gray-200);
  background: #ffffff;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.cases-pager__btn:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}
.cases-pager__btn.is-active {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  background: #ffffff;
  font-weight: 700;
}
.cases-pager__btn:disabled {
  color: var(--gray-300);
  border-color: var(--gray-100);
  cursor: not-allowed;
  background: #fafbfc;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .cases-grid { grid-template-columns: repeat(3, 1fr); }
  .cases-tabs { max-width: 640px; }
}
@media (max-width: 768px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
  .cases-tab { padding: 8px 18px; font-size: 14px; }
  .case-card__title { font-size: 14px; }
}
@media (max-width: 480px) {
  .cases-grid { grid-template-columns: 1fr; }
  .cases-tabs { gap: 4px; padding: 4px; }
  .cases-tab { padding: 8px 14px; font-size: 13px; }
  .cases-pager__btn { min-width: 38px; height: 34px; font-size: 13px; }
}

/* ===== 地图区域（联系我们页） ===== */
.map-wrap {
  position: relative;
  height: 380px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--bg-gradient);
}
.map-wrap__canvas {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
}

@media (max-width: 768px) {
  .map-wrap { height: 340px; }
}

/* ===== 案例详情页（精简版：单列正文流） ===== */
/* case-hero 复用 .page-hero 的图片 banner 样式，这里只留占位 */
.case-hero { /* 让 case-hero 继承 page-hero */ }

/* 案例头部：标题 + 行业标签 + 元数据（移到正文头部） */
.case-meta {
  margin-bottom: var(--space-5);
}
.case-meta__industry {
  display: inline-block;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-accent);
  background: rgba(0, 200, 150, 0.12);
  border: 1px solid rgba(0, 200, 150, 0.3);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-3);
  letter-spacing: 0.04em;
}
.case-meta__title {
  color: var(--text-primary);
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 800;
  margin: 0 0 var(--space-4);
  line-height: 1.3;
}
.case-meta__info {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
}
.case-meta__info span { display: inline-flex; align-items: center; gap: 6px; }
}

/* 文章主体 */
.case-article { max-width: 100%; }
.case-article__cover {
  margin: 0 0 var(--space-6);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #e8ecf2;
  aspect-ratio: 16 / 9;
  box-shadow: var(--shadow-md);
}
.case-article__cover img { width: 100%; height: 100%; object-fit: cover; display: block; }

.case-article__summary {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-primary);
  background: linear-gradient(135deg, rgba(30, 107, 255, 0.06) 0%, rgba(0, 200, 150, 0.05) 100%);
  border-left: 4px solid var(--brand-primary);
  padding: 18px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 0 0 var(--space-7);
}

.case-article__h2 {
  font-size: 21px;
  font-weight: 700;
  color: var(--brand-deep);
  margin: var(--space-7) 0 var(--space-4);
  position: relative;
  padding-left: 14px;
}
.case-article__h2::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 4px; height: 18px;
  background: var(--brand-primary);
  border-radius: 2px;
}

.case-article__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.case-article__list li {
  position: relative;
  padding: 14px 18px 14px 44px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 15px;
}
.case-article__list li::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 22px;
  width: 14px;
  height: 14px;
  background: var(--brand-accent);
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M9 16.2l-3.5-3.5a1 1 0 0 0-1.4 1.4l4.2 4.2a1 1 0 0 0 1.4 0l9.2-9.2a1 1 0 0 0-1.4-1.4z'/></svg>") no-repeat center / contain;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M9 16.2l-3.5-3.5a1 1 0 0 0-1.4 1.4l4.2 4.2a1 1 0 0 0 1.4 0l9.2-9.2a1 1 0 0 0-1.4-1.4z'/></svg>") no-repeat center / contain;
}
.case-article__list--num { counter-reset: cnum; }
.case-article__list--num li {
  counter-increment: cnum;
  padding-left: 50px;
}
.case-article__list--num li::before {
  background: var(--brand-primary);
  -webkit-mask: none;
          mask: none;
  width: 22px;
  height: 22px;
  left: 14px;
  top: 16px;
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  content: counter(cnum);
}

.case-article__p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-primary);
  margin: 0 0 var(--space-4);
}

.case-article__back {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--gray-100);
  text-align: center;
}

/* 404 占位 */
.case-detail__empty {
  text-align: center;
  padding: var(--space-9) var(--space-5);
}
.case-detail__empty h2 {
  font-size: 22px;
  color: var(--brand-deep);
  margin-bottom: var(--space-3);
}
.case-detail__empty p { color: var(--text-secondary); margin-bottom: var(--space-5); }

@media (max-width: 640px) {
  .case-article__h2 { font-size: 19px; }
  .case-article__summary { font-size: 16px; padding: 14px 16px; }
  .case-meta__title { font-size: 24px; }
}

/* ============================================
   案例详情页（case-detail.html）补充组件
   - 完全静态版：metrics / related products / tags / 面包屑
   - 全部沿用 var(--xxx) 设计令牌
   ============================================ */

/* 案例面包屑浅色带（hero 下方） */
.case-crumb {
  background: var(--bg-section);
  border-bottom: 1px solid var(--gray-100);
  padding: var(--space-3) 0;
  font-size: 13px;
}

/* 4 指标卡（节能率 / 年节电 / 回收期 / 面积） */
.case-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin: var(--space-6) 0;
}
.case-metric {
  text-align: center;
  padding: var(--space-4) var(--space-3);
  background: var(--bg-section);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
  transition: all var(--t-base);
}
.case-metric:hover {
  border-color: var(--brand-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.case-metric__value {
  font-size: 32px;
  font-weight: 800;
  color: var(--brand-accent);
  line-height: 1.1;
  margin-bottom: 6px;
}
.case-metric__unit {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-deep);
  margin-left: 4px;
}
.case-metric__label {
  font-size: 13px;
  color: var(--text-secondary);
}
@media (max-width: 640px) {
  .case-metrics { grid-template-columns: repeat(2, 1fr); }
  .case-metric__value { font-size: 24px; }
}

/* 关联产品区 */
.case-related { margin-top: var(--space-7); }
.case-products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.case-product {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-5) var(--space-4);
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--t-base);
}
.case-product:hover {
  border-color: var(--brand-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.case-product__icon {
  font-size: 36px;
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  background: rgba(30, 107, 255, 0.08);
  color: var(--brand-primary);
  border-radius: 50%;
  margin-bottom: var(--space-3);
}
.case-product__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-deep);
  margin-bottom: 8px;
}
.case-product__arrow {
  font-size: 13px;
  color: var(--brand-primary);
  font-weight: 500;
}
.case-product:hover .case-product__arrow { color: var(--brand-primary-dark); }
@media (max-width: 640px) {
  .case-products { grid-template-columns: 1fr; }
}

/* 案例标签 */
.case-tags-wrap { margin-top: var(--space-7); }
.case-tags {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.case-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(30, 107, 255, 0.06);
  color: var(--brand-primary);
  border: 1px solid rgba(30, 107, 255, 0.12);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  transition: all .2s;
  cursor: pointer;
}
.case-tag:hover {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(30, 107, 255, .25);
}

/* ============================================
   案例详情页（EyouCMS 文章型）
   - 浅色文章头 + 居中标题 + 元信息
   - 正文：摘要 + 段落 + 配图
   - 底部：标签 + 上一篇/下一篇 + 返回
   - 完全静态，沿用 var(--xxx) 设计令牌
   ============================================ */

/* ---------- 1. 浅色文章头 ---------- */
.article-head {
  padding: 56px 0 40px;
  background: var(--bg-section);
  border-bottom: 1px solid var(--gray-100);
}
.article-head__cat {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(30, 107, 255, .08);
  color: var(--brand-primary);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: .04em;
}
.article-head__title {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.35;
  margin: 0 0 16px;
}
.article-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  color: var(--text-secondary);
  font-size: 13px;
  margin: 0;
}
.article-head__meta span { display: inline-flex; align-items: center; gap: 4px; }
@media (max-width: 640px) {
  .article-head { padding: 36px 0 28px; }
  .article-head__title { font-size: 22px; }
  .article-head__meta { gap: 4px 12px; font-size: 12px; }
}

/* 全局兜底：防止 img / 长内容撑破视口 */
.article-body img,
.article-head img {
  max-width: 100%;
  height: auto;
  display: block;
}
.article-body,
.article-head { overflow-wrap: break-word; word-break: break-word; }

/* ---------- 2. 正文 ---------- */
.article-main { padding: 56px 0 72px; }
.article-body { font-size: 16px; line-height: 1.9; color: var(--text-primary); }
.article-body__summary {
  font-size: 15.5px;
  line-height: 1.85;
  padding: 16px 20px;
  background: var(--bg-section);
  border-left: 4px solid var(--brand-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 0 0 28px;
  color: var(--text-secondary);
}
.article-body__summary strong { color: var(--text-primary); }
.article-body p { margin: 0 0 16px; }
.article-body p strong { color: var(--text-primary); font-weight: 600; }
.article-body h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--brand-deep);
  margin: 36px 0 14px;
  padding-left: 12px;
  position: relative;
}
.article-body h2::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 4px; height: 18px;
  background: var(--brand-primary);
  border-radius: 2px;
}
.article-body__figure {
  margin: 28px 0;
}
.article-body__figure img {
  width: 100%;
  border-radius: var(--radius-md);
  display: block;
}
.article-body__figure figcaption {
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 10px;
}

/* ---------- 3. 标签 / 上一篇下一篇 / 返回 ---------- */
.article-body__tags {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.article-body__tags-label {
  color: var(--text-secondary);
  font-size: 14px;
  margin-right: 4px;
}
.article-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-section);
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  font-size: 12px;
  text-decoration: none;
  transition: all .2s;
  border: 1px solid var(--gray-100);
}
.article-tag:hover {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}

.article-body__prevnext {
  margin-top: 32px;
  padding: 20px 0;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.article-body__prevnext a {
  display: block;
  padding: 14px 18px;
  background: var(--bg-section);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: all .2s;
  border: 1px solid transparent;
}
.article-body__prevnext a:hover {
  background: rgba(30, 107, 255, .06);
  border-color: rgba(30, 107, 255, .18);
  color: var(--brand-primary);
}
.article-body__prevnext .article-body__next { text-align: right; }
.article-body__prevnext span {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.article-body__prevnext strong {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}
@media (max-width: 640px) {
  .article-body__prevnext { grid-template-columns: 1fr; }
  .article-body__prevnext .article-body__next { text-align: left; }
}

.article-body__back { text-align: center; margin-top: 32px; }
.article-body__back a {
  display: inline-block;
  padding: 10px 28px;
  border: 1px solid var(--gray-200);
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  font-size: 14px;
  text-decoration: none;
  transition: all .2s;
}
.article-body__back a:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(30, 107, 255, .04);
}

/* ============================================
   蒸发冷换热模块 v2（product-evap-v2.html）
   - 新版产品页：Banner 固定 / 轮播 / 细节可展开 / 详情 / 底图
   - 与首页 .hero 轮播解耦，组件命名空间 .gallery-carousel
   - 沿用 var(--xxx) 设计令牌
   ============================================ */

/* ---------- 1. 全屏 Banner（首屏大图） ---------- */
.evap-banner {
  position: relative;
  width: 100%;
  height: 80vh;
  min-height: 560px;
  max-height: 820px;
  overflow: hidden;
  background: var(--bg-darker);
}
.evap-banner__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.62) saturate(1.05);
}
.evap-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 26, 48, 0.35) 0%, rgba(8, 26, 48, 0.78) 100%);
  display: flex;
  align-items: flex-end;
}
.evap-banner__content {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5) var(--space-9);
  color: #fff;
}
.evap-banner__eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 200, 150, 0.18);
  color: var(--brand-accent);
  border: 1px solid rgba(0, 200, 150, 0.4);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
  backdrop-filter: blur(6px);
}
.evap-banner__title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 var(--space-3);
  color: #fff;
  letter-spacing: -0.01em;
}
.evap-banner__desc {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.7;
  color: var(--text-on-dark-muted);
  max-width: 760px;
  margin: 0 0 var(--space-5);
}
.evap-banner__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  margin-top: var(--space-4);
}
.evap-banner__meta-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--text-on-dark-muted);
  font-size: 14px;
}
.evap-banner__meta-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--brand-accent);
  line-height: 1;
}
.evap-banner__meta-unit {
  font-size: 14px;
  color: var(--text-on-dark-muted);
  margin-left: 2px;
}

/* ---------- 2. 产品页轮播 .gallery-carousel（画廊式：通栏撑满页宽，主图 70% + 左右各露 15% 邻图） ---------- */
.gallery-carousel {
  position: relative;
  width: 100vw;              /* 通栏：撑满整个视口宽度 */
  margin-left: calc(50% - 50vw); /* 突破 .container 的 max-width 限制 */
  margin-right: calc(50% - 50vw);
  user-select: none;
}

/* 通栏 section：去掉 .section 默认的上下 padding */
.section--flush {
  padding: 0;
  background: transparent;
}
.gallery-carousel__viewport {
  position: relative;
  width: 100%;
  padding: 0 var(--gallery-side-pad);   /* 左右大留白：参考 SU7 风格 */
  box-sizing: border-box;
  overflow: hidden;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
}
.gallery-carousel__track {
  display: flex;
  gap: var(--gallery-peek-gap, 24px);
  transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}
.gallery-carousel__slide {
  flex: 0 0 auto;            /* 宽度由 JS 写入 inline style：viewport * 0.6 */
  position: relative;
  aspect-ratio: 21 / 9;       /* SU7 风格的超宽比例（约 2.33:1） */
  background: #0E2A47;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(8, 26, 48, 0.22);
}
.gallery-carousel__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* caption 区域：左对齐，左文字 + 右下翻页按钮（与画廊同 padding，左右对齐主图） */
.gallery-carousel__caption {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5);
  margin-top: 80px;          /* 文字描述与主图之间留出明显呼吸距离 */
  padding: 0 var(--gallery-side-pad);
  text-align: left;
}
.gallery-carousel__caption-body {
  flex: 1;
  min-width: 0;
}
.gallery-carousel__caption-index {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-accent);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  display: none;             /* SU7 风格：不需要 01/03 序号，留给标题更干净 */
}
.gallery-carousel__caption-title {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin: 0 0 6px;
}
.gallery-carousel__caption-desc {
  font-size: clamp(13px, 1.1vw, 15px);
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
  max-width: 720px;
}
.gallery-carousel__caption-nav {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
/* 翻页圆按钮（描边风，右下角） */
.gallery-carousel__round {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid var(--text-primary);
  color: var(--text-primary);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all var(--t-base);
  padding: 0;
}
.gallery-carousel__round:hover {
  background: var(--text-primary);
  color: #fff;
  transform: scale(1.05);
}
.gallery-carousel__round svg { width: 18px; height: 18px; }

/* 底部单条进度条（替代圆点指示器，与画廊同 padding） */
.gallery-carousel__dots {
  margin-top: var(--space-4);
  padding: 0 var(--gallery-side-pad);
}
.gallery-carousel__progress {
  width: 100%;
  height: 2px;
  background: var(--gray-200);
  border-radius: 1px;
  overflow: hidden;
}
.gallery-carousel__progress-fill {
  height: 100%;
  width: 33.33%;
  background: var(--brand-primary);
  border-radius: 1px;
  transition: width 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
/* 圆点指示器 */
.gallery-carousel__dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: var(--space-4);
}
.gallery-carousel__dot {
  width: 32px;
  height: 4px;
  background: var(--gray-200);
  border: none;
  border-radius: 2px;
  cursor: pointer;
  padding: 0;
  transition: all var(--t-base);
}
.gallery-carousel__dot:hover { background: var(--gray-300); }
.gallery-carousel__dot.is-active {
  background: var(--brand-primary);
  width: 48px;
}

/* ---------- 3. 细节可展开 .detail-feature ---------- */
.detail-feature {
  padding: var(--space-9) 0 var(--space-11);
}
.detail-feature + .detail-feature { padding-top: 0; }
.detail-feature__row {
  display: grid;
  grid-template-columns: 1.5fr 1fr;            /* 图 60% / 文 40%（参考 SU7 风格 6:4） */
  gap: var(--space-7);
  align-items: start;                          /* 文字顶部对齐图片顶端（持平） */
}
.detail-feature__row--reverse {
  grid-template-columns: 1fr 1.5fr;            /* 文 40% / 图 60%（reverse 也保持 6:4） */
  align-items: start;                          /* reverse 也让文字从顶部开始 */
}
.detail-feature__row--reverse .detail-feature__visual { order: 2; }
.detail-feature__row--reverse .detail-feature__body   { order: 1; }
.detail-feature__visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--bg-section);
  min-height: 460px;
}
.detail-feature__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.detail-feature__visual:hover .detail-feature__img { transform: scale(1.04); }
.detail-feature__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-3) 0;
}
.detail-feature__eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.detail-feature__heading {
  font-size: clamp(32px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.005em;
}
.detail-feature__intro {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin: 0 0 var(--space-7);
}
.detail-feature__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--gray-100);
}
.detail-feature__item {
  border-bottom: 1px solid var(--gray-100);
}
.detail-feature__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 28px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--t-base);
}
.detail-feature__q:hover { color: var(--brand-primary); }
.detail-feature__q-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  color: var(--brand-primary);
  transition: transform var(--t-base);
}
.detail-feature__item.is-open .detail-feature__q-icon { transform: rotate(180deg); }
.detail-feature__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}
.detail-feature__a-inner {
  padding: 0 0 28px;
}

/* ---------- 4. 详情 3 张 .detail-section ---------- */
.detail-section {
  padding: var(--space-9) 0;
  text-align: center;
  background: var(--bg-section);
}
.detail-section--alt { background: #fff; }
.detail-section__head {
  max-width: 760px;
  margin: 0 auto var(--space-7);
}
.detail-section__eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.detail-section__title {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.01em;
}
.detail-section__desc {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin: 0;
}
.detail-section__visual {
  max-width: 1240px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.detail-section__img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- 5. 底图 .evap-bottom ---------- */
.evap-bottom {
  position: relative;
  width: 100%;
  height: 56vh;
  min-height: 380px;
  max-height: 520px;
  overflow: hidden;
}
.evap-bottom__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.7) saturate(1.05);
}

/* ---------- 6. 响应式 ---------- */
@media (max-width: 1024px) {
  .evap-banner { height: 64vh; min-height: 460px; }
  .detail-feature__row,
  .detail-feature__row--reverse { grid-template-columns: 1fr; gap: var(--space-5); }
  .detail-feature__row--reverse .detail-feature__visual,
  .detail-feature__row--reverse .detail-feature__body { order: initial; }
  .detail-feature__visual { min-height: 320px; }
  .gallery-carousel__track { --gallery-peek-gap: 0px; }
}
@media (max-width: 640px) {
  .evap-banner { height: 70vh; min-height: 420px; }
  .evap-banner__content { padding: 0 var(--space-4) var(--space-7); }
  .evap-banner__meta { gap: var(--space-3) var(--space-4); }
  .evap-banner__meta-num { font-size: 22px; }
  .gallery-carousel__caption { padding: var(--space-5) var(--space-4) var(--space-4); flex-wrap: wrap; }
  .gallery-carousel__caption-nav { order: 2; }
  .gallery-carousel__dots { padding: 0 4px; }
  .detail-feature { padding: var(--space-7) 0; }
  .detail-section { padding: var(--space-7) 0; }
  .evap-bottom { height: 38vh; min-height: 260px; }
}