/*
 * 北环之星 (Beihuanzhixing) 官网 CSS
 * 风格：力鼎的信息组织与采购视角 + 泽邦的工业企业稳重感
 * 禁止：霓虹渐变、毛玻璃、Bento Grid、SaaS 风格、过度动效
 */

/* ==========================================================================
   CSS 变量
   ========================================================================== */
:root {
  --color-primary-dark: #1a3a4a;
  --color-primary: #245568;
  --color-eco-green: #2d7d46;
  --color-eco-green-dark: #236337;
  --color-eco-light: #f0f7f4;
  --color-eco-section: #1e4d3a;

  --color-text: #333333;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-white: #ffffff;
  --color-border: #e0e0e0;
  --color-bg-light: #f5f7f8;

  --font-base: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Helvetica Neue', Arial, sans-serif;
  --header-h: 70px;
  --header-h-m: 56px;
  --max-w: 1200px;
  --transition: 0.25s ease;
}

/* ==========================================================================
   基础重置
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

body.scroll-lock { overflow: hidden; }

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

/* 可访问性跳转链接 */
.skip-link {
  position: absolute; top: -100px; left: 0; z-index: 9999;
  background: var(--color-eco-green); color: #fff; padding: 8px 16px;
}
.skip-link:focus { top: 0; }

/* ==========================================================================
   布局
   ========================================================================== */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.section { padding: 64px 0; }
.section--light { background: var(--color-bg-light); }

.section--eco {
  background: var(--color-eco-light);
}

.section--eco-dark {
  background: var(--color-eco-section);
  color: var(--color-white);
}

/* ==========================================================================
   排版
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600; line-height: 1.3; color: var(--color-text);
}

.section-title {
  font-size: 28px; text-align: center; color: var(--color-primary-dark);
  margin-bottom: 12px; position: relative;
}
.section-title::after {
  content: ''; display: block; width: 48px; height: 3px;
  background: var(--color-eco-green); margin: 12px auto 0;
}
.section-title--light { color: var(--color-white); }
.section-title--light::after { background: rgba(255,255,255,0.5); }

.section-subtitle {
  font-size: 16px; text-align: center; color: var(--color-text-secondary);
  margin-bottom: 40px; max-width: 800px; margin-left: auto; margin-right: auto;
  font-weight: normal; line-height: 1.8;
}

.section-lead {
  font-size: 16px; line-height: 1.8; max-width: 900px;
}
.section-lead--light { color: rgba(255,255,255,0.9); }

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

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 28px; font-size: 15px; font-weight: 500;
  border-radius: 2px; transition: all var(--transition); cursor: pointer;
}
.btn-primary {
  background: var(--color-eco-green); color: #fff; border: 1px solid var(--color-eco-green);
}
.btn-primary:hover { background: var(--color-eco-green-dark); border-color: var(--color-eco-green-dark); color: #fff; }

.btn-outline {
  background: transparent; border: 1px solid var(--color-primary-dark);
  color: var(--color-primary-dark);
}
.btn-outline:hover { background: var(--color-primary-dark); color: #fff; }

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

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%;
  height: var(--header-h); z-index: 1000;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.site-header.is-scrolled { box-shadow: 0 2px 12px rgba(0,0,0,0.08); }

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

/* Logo */
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--color-primary-dark); flex-shrink: 0;
}
.brand-logo { height: 38px; }
.brand-text strong { font-size: 20px; display: block; line-height: 1.2; }
.brand-text small { font-size: 11px; color: var(--color-text-secondary); display: block; }

/* 桌面导航 */
.desktop-nav ul { display: flex; gap: 0; }
.desktop-nav li { position: relative; }
.desktop-nav a {
  display: block; padding: 8px 12px; font-size: 14px; font-weight: 500;
  color: var(--color-text); white-space: nowrap;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--color-eco-green); }
.desktop-nav a::after {
  content: ''; position: absolute; bottom: 0; left: 12px; right: 12px;
  height: 2px; background: var(--color-eco-green);
  transform: scaleX(0); transition: transform var(--transition);
}
.desktop-nav a:hover::after, .desktop-nav a.active::after { transform: scaleX(1); }

/* Header 操作区 */
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-contact-btn { font-size: 13px; padding: 8px 20px; }

/* 汉堡按钮 */
.mobile-toggle {
  display: none; width: 28px; height: 24px; position: relative;
  flex-direction: column; justify-content: space-between;
}
.mobile-toggle span {
  display: block; width: 100%; height: 2px;
  background: var(--color-primary-dark); transition: all var(--transition);
}
.mobile-toggle.is-active span:nth-child(1) { transform: translateY(11px) rotate(45deg); }
.mobile-toggle.is-active span:nth-child(2) { opacity: 0; }
.mobile-toggle.is-active span:nth-child(3) { transform: translateY(-11px) rotate(-45deg); }

/* ==========================================================================
   移动端导航抽屉
   ========================================================================== */
.mobile-drawer {
  position: fixed; top: var(--header-h-m); left: 0; width: 100%;
  background: var(--color-white); z-index: 999;
  transform: translateY(-100%); opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  max-height: calc(100vh - var(--header-h-m)); overflow-y: auto;
}
.mobile-drawer.is-open { transform: translateY(0); opacity: 1; }
.mobile-drawer ul { padding: 8px 0; }
.mobile-drawer li { border-bottom: 1px solid #f0f0f0; }
.mobile-drawer a {
  display: block; padding: 14px 24px; font-size: 15px;
  color: var(--color-text); font-weight: 500;
}
.mobile-drawer a:hover { color: var(--color-eco-green); background: var(--color-eco-light); }
.mobile-drawer-phone { color: var(--color-eco-green) !important; font-weight: 600 !important; }

.drawer-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.3);
  z-index: 998; opacity: 0; visibility: hidden; transition: all 0.3s;
}
.drawer-overlay.is-open { opacity: 1; visibility: visible; }

/* ==========================================================================
   Hero 首屏
   ========================================================================== */
.hero-section {
  position: relative; width: 100%;
  min-height: 90vh; margin-top: var(--header-h);
  background: var(--color-primary-dark); overflow: hidden;
  display: flex; align-items: stretch;
}

.hero-bg {
  position: absolute; inset: 0; z-index: 1;
}
.hero-bg img {
  width: 100%; height: 100%; object-fit: cover; opacity: 0.35;
}

.hero-content {
  position: relative; z-index: 2; width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 40px; padding-top: 60px; padding-bottom: 60px;
}

/* 左侧主文案 */
.hero-main { flex: 1; max-width: 600px; color: var(--color-white); }

.hero-title {
  font-size: 36px; color: var(--color-white); margin-bottom: 16px;
  line-height: 1.25; text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.hero-subtitle {
  font-size: 20px; margin-bottom: 8px; color: rgba(255,255,255,0.9);
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}
.hero-capacity {
  font-size: 17px; color: rgba(255,255,255,0.85); margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-actions .btn-outline {
  border-color: rgba(255,255,255,0.7); color: #fff;
}
.hero-actions .btn-outline:hover {
  background: rgba(255,255,255,0.15); border-color: #fff;
}

/* 右侧证据区 */
.hero-evidence { flex: 0 0 440px; }

.evidence-card {
  background: rgba(0,0,0,0.55); backdrop-filter: blur(2px);
  border-left: 4px solid var(--color-eco-green);
  padding: 28px 24px; color: var(--color-white);
}
.evidence-title {
  font-size: 18px; color: #fff; margin-bottom: 16px;
  font-weight: 600; line-height: 1.4;
}
.evidence-list { margin-bottom: 20px; }
.evidence-list li {
  font-size: 14px; line-height: 1.7; padding: 4px 0;
  padding-left: 16px; position: relative; color: rgba(255,255,255,0.92);
}
.evidence-list li::before {
  content: '✓'; position: absolute; left: 0;
  color: var(--color-eco-green); font-weight: bold;
}

/* 检测报告缩略入口 */
.evidence-report { margin-top: 16px; }
.report-thumbnail {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.25);
  padding: 10px 16px; color: #fff; font-size: 14px;
  transition: background var(--transition);
}
.report-thumbnail:hover { background: rgba(255,255,255,0.2); color: #fff; }
.report-icon { font-size: 20px; }
.report-label { text-decoration: underline; text-underline-offset: 3px; }

/* ==========================================================================
   第二屏：水科园是如何做到的
   ========================================================================== */
.section--eco .section-lead { margin-bottom: 32px; }

/* 统计行 */
.stats-row {
  display: flex; gap: 20px; margin-bottom: 40px; flex-wrap: wrap;
}
.stat-item {
  flex: 1; min-width: 200px;
  background: var(--color-white); border: 1px solid var(--color-border);
  padding: 24px; text-align: center; border-radius: 2px;
}
.stat-number {
  display: block; font-size: 36px; font-weight: 700;
  color: var(--color-eco-green); margin-bottom: 4px;
}
.stat-label {
  font-size: 14px; color: var(--color-text-secondary);
}

/* 核心引述 */
.quote-block {
  background: var(--color-white); border-left: 4px solid var(--color-eco-green);
  padding: 24px 28px; margin: 32px 0; font-size: 16px;
  line-height: 1.9; color: var(--color-primary-dark); font-weight: 500;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

/* 详细说明 */
.eco-details {
  display: flex; gap: 24px; margin: 24px 0; flex-wrap: wrap;
}
.eco-detail-item {
  flex: 1; min-width: 280px; padding: 16px 20px;
  border: 1px solid var(--color-border); background: var(--color-white);
  border-radius: 2px; font-size: 15px; color: var(--color-text);
}

/* CTA 提问 */
.cta-question { text-align: center; margin-top: 40px; }
.cta-question-text {
  font-size: 22px; font-weight: 600; color: var(--color-primary-dark);
  margin-bottom: 20px;
}

/* ==========================================================================
   解决方案卡片
   ========================================================================== */
.solution-cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 32px;
}
.solution-card {
  display: flex; flex-direction: column; align-items: center;
  padding: 32px 20px; border: 1px solid var(--color-border);
  background: var(--color-white); text-align: center;
  transition: all var(--transition); border-radius: 2px;
}
.solution-card:hover {
  border-color: var(--color-eco-green);
  box-shadow: 0 4px 16px rgba(45,125,70,0.1);
  transform: translateY(-2px);
}
.solution-card-icon { font-size: 32px; margin-bottom: 12px; }
.solution-card h3 { font-size: 16px; color: var(--color-text); font-weight: 500; margin: 0; }

/* ==========================================================================
   案例网格
   ========================================================================== */
.case-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.case-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  overflow: hidden; transition: all var(--transition); border-radius: 2px;
  display: block; color: inherit;
}
.case-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.case-card--featured {
  grid-column: span 2; border-color: var(--color-eco-green);
  border-width: 2px;
}

.case-card-img {
  width: 100%; height: 180px; overflow: hidden; position: relative;
  border-bottom: 1px solid var(--color-border);
}
.case-card-img img { width: 100%; height: 100%; object-fit: cover; }
.case-card--featured .case-card-img { height: 240px; }

.case-badge {
  position: absolute; top: 8px; left: 8px;
  background: var(--color-eco-green); color: #fff;
  font-size: 12px; padding: 4px 10px; font-weight: 500;
}
.case-card-body { padding: 14px 16px; }
.case-card-body h3 { font-size: 15px; margin-bottom: 6px; font-weight: 600; color: var(--color-primary-dark); }
.case-specs { font-size: 13px; color: var(--color-eco-green); margin-bottom: 4px; font-weight: 500; }
.case-process { font-size: 13px; color: var(--color-text-secondary); }
.case-highlight {
  font-size: 13px; color: var(--color-eco-green); font-weight: 500; margin-top: 4px;
}

/* ==========================================================================
   产品预览网格
   ========================================================================== */
.product-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.product-card {
  display: flex; border: 1px solid var(--color-border);
  background: var(--color-white); overflow: hidden;
  transition: all var(--transition); border-radius: 2px; color: inherit;
}
.product-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.product-card-img {
  flex: 0 0 220px; height: 200px; overflow: hidden;
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; }
.product-card-body { padding: 20px; flex: 1; }
.product-card-body h3 {
  font-size: 16px; margin-bottom: 10px; color: var(--color-primary-dark);
  font-weight: 600; line-height: 1.4;
}
.product-card-body p {
  font-size: 14px; color: var(--color-text-secondary); line-height: 1.7;
}

/* ==========================================================================
   荣誉网格
   ========================================================================== */
.honor-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.honor-item {
  border: 1px solid var(--color-border); background: var(--color-white);
  padding: 12px; text-align: center;
}
.honor-item img { width: 100%; height: auto; }

/* ==========================================================================
   技改维修 CTA
   ========================================================================== */
.retrofit-cta-inner {
  display: flex; align-items: center; gap: 48px;
}
.retrofit-cta-text { flex: 1; }
.retrofit-cta-text .section-title { text-align: left; }
.retrofit-cta-text .section-title::after { margin: 12px 0 0; }
.retrofit-cta-text .section-lead { margin-bottom: 16px; }

.retrofit-cta-actions { flex: 0 0 auto; text-align: center; }
.retrofit-phone {
  margin-top: 16px; font-size: 15px; color: rgba(255,255,255,0.85);
}
.retrofit-phone a { color: #fff; font-weight: 600; text-decoration: underline; }

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  background: var(--color-primary-dark); color: rgba(255,255,255,0.85);
  border-top: 3px solid var(--color-eco-green);
}
.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 32px; padding: 48px 20px 36px;
}
.footer-col h4 {
  color: #fff; font-size: 16px; margin-bottom: 16px;
  padding-bottom: 10px; position: relative;
}
.footer-col h4::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 28px; height: 2px; background: var(--color-eco-green);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col a { color: rgba(255,255,255,0.7); font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 14px; margin-bottom: 6px; color: rgba(255,255,255,0.7); }

/* Logo 区域 */
.footer-brand {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.footer-logo { height: 36px; filter: brightness(10); }
.footer-brand strong { font-size: 18px; color: #fff; display: block; }
.footer-brand p { font-size: 12px; color: rgba(255,255,255,0.7); margin: 0; }
.footer-desc { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.65); }

.footer-phone a { color: rgba(255,255,255,0.9); font-weight: 600; }

.footer-bottom {
  text-align: center; padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.5); }

/* ==========================================================================
   全局悬浮联系面板（桌面端）
   ========================================================================== */
.floating-panel {
  position: fixed; right: 0; top: 50%; transform: translateY(-50%);
  z-index: 1001; display: flex; flex-direction: column; gap: 2px;
}

.floating-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 52px; padding: 14px 0;
  background: var(--color-primary-dark); color: #fff;
  text-decoration: none; cursor: pointer;
  transition: background var(--transition);
  border-left: 3px solid transparent;
}
.floating-btn:hover {
  background: var(--color-eco-green); color: #fff;
  border-left-color: var(--color-eco-green-dark);
}
.floating-btn-icon { font-size: 20px; margin-bottom: 6px; }
.floating-btn-text {
  writing-mode: vertical-lr; font-size: 13px;
  letter-spacing: 2px; font-weight: 500;
}

/* 联系菜单弹出 */
.floating-contact-wrapper { position: relative; }
.floating-menu {
  position: absolute; right: 56px; top: 0;
  width: 140px; background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  opacity: 0; visibility: hidden;
  transform: translateX(8px);
  transition: all 0.25s ease;
}
.floating-menu.is-open { opacity: 1; visibility: visible; transform: translateX(0); }

.floating-menu-item {
  display: block; padding: 12px 16px;
  font-size: 14px; color: var(--color-text);
  border-bottom: 1px solid #f0f0f0;
  transition: all var(--transition);
}
.floating-menu-item:hover { background: var(--color-eco-light); color: var(--color-eco-green); }
.floating-menu-item:last-of-type { border-bottom: none; }

.floating-menu-phone {
  padding: 10px 16px; background: var(--color-bg-light);
}
.floating-menu-phone a {
  font-size: 13px; color: var(--color-eco-green); font-weight: 600;
}

/* ==========================================================================
   移动端底部联系栏
   ========================================================================== */
.mobile-contact-bar {
  display: none; position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 1001; background: var(--color-white);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -2px 12px rgba(0,0,0,0.08);
}
.mobile-contact-bar {
  grid-template-columns: repeat(3, 1fr);
}
.mobile-bar-btn {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 10px 0; gap: 2px;
  font-size: 12px; color: var(--color-text); background: none;
  border: none; cursor: pointer; text-decoration: none;
}
.mobile-bar-btn span:first-child { font-size: 18px; }
.mobile-bar-phone { color: var(--color-eco-green); font-weight: 500; }

/* 移动端展开菜单 */
.mobile-contact-expand {
  display: none; position: fixed; bottom: 54px; left: 0; right: 0;
  z-index: 1000; background: var(--color-white);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 16px rgba(0,0,0,0.1);
  transform: translateY(100%); transition: transform 0.25s ease;
}
.mobile-contact-expand.is-open { transform: translateY(0); }
.mobile-expand-item {
  display: block; padding: 14px 24px;
  border-bottom: 1px solid #f0f0f0; font-size: 15px;
  color: var(--color-text);
}
.mobile-expand-item:hover { color: var(--color-eco-green); background: var(--color-eco-light); }

/* ==========================================================================
   淡入动效（克制）
   ========================================================================== */
.fade-in {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.is-visible { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   响应式
   ========================================================================== */

/* 大屏 1200+ */
@media (min-width: 1200px) {
  .hero-title { font-size: 42px; }
  .section-title { font-size: 30px; }
}

/* 平板 768-1199 */
@media (max-width: 1199px) {
  .desktop-nav a { padding: 8px 8px; font-size: 13px; }
  .case-grid { grid-template-columns: repeat(3, 1fr); }
  .case-card--featured { grid-column: span 3; }
  .product-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-evidence { flex: 0 0 380px; }
}

@media (max-width: 991px) {
  .hero-content { flex-direction: column; align-items: flex-start; }
  .hero-evidence { flex: none; width: 100%; max-width: 500px; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .case-card--featured { grid-column: span 2; }
  .solution-cards { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .retrofit-cta-inner { flex-direction: column; text-align: center; }
  .retrofit-cta-text .section-title { text-align: center; }
  .retrofit-cta-text .section-title::after { margin: 12px auto 0; }
}

/* 手机 <768 */
@media (max-width: 767px) {
  .site-header { height: var(--header-h-m); }
  .hero-section { min-height: auto; margin-top: var(--header-h-m); }
  .hero-content { padding-top: 36px; padding-bottom: 36px; }
  .hero-title { font-size: 26px; }
  .hero-subtitle { font-size: 16px; }
  .hero-capacity { font-size: 14px; }

  .desktop-nav, .header-contact-btn { display: none; }
  .mobile-toggle { display: flex; }

  .section { padding: 40px 0; }
  .section-title { font-size: 22px; }
  .section-subtitle { font-size: 14px; margin-bottom: 24px; }

  .stats-row { flex-direction: column; }
  .stat-item { min-width: auto; }

  .solution-cards { grid-template-columns: 1fr 1fr; gap: 12px; }
  .solution-card { padding: 20px 12px; }

  .case-grid { grid-template-columns: 1fr; }
  .case-card--featured { grid-column: span 1; }

  .product-card { flex-direction: column; }
  .product-card-img { flex: none; width: 100%; height: 180px; }

  .honor-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .footer-inner { grid-template-columns: 1fr; gap: 24px; }

  /* 桌面悬浮面板隐藏，显示移动端底栏 */
  .floating-panel { display: none; }
  .mobile-contact-bar { display: grid; }
  .mobile-contact-expand { display: block; }

  /* 给底栏留出空间 */
  .site-footer { padding-bottom: 56px; }

  .quote-block { font-size: 15px; padding: 16px 20px; }
  .cta-question-text { font-size: 18px; }
}

@media (max-width: 400px) {
  .solution-cards { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}

/* ==========================================================================
   内容补全组件（2026-09 定稿素材）
   ========================================================================== */
.content-intro {
  max-width: 820px;
  margin: 0 auto 32px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  font-size: 16px;
}

.page-header {
  margin-top: var(--header-h);
  padding: 56px 0;
  background: var(--color-bg-light);
}
.page-title { margin: 0; font-size: 2.5rem; color: var(--color-primary-dark); }
.page-lead { margin-top: 12px; color: var(--color-text-secondary); }

.product-section {
  padding: 64px 0;
}
.product-section:nth-of-type(even) { background: var(--color-bg-light); }
.product-section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 28px;
}
.product-section-head h2 { color: var(--color-primary-dark); font-size: 28px; }
.product-section-head p { max-width: 680px; color: var(--color-text-secondary); line-height: 1.9; }
.product-section-note {
  margin-top: 18px;
  padding-left: 16px;
  border-left: 3px solid var(--color-eco-green);
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.media-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.media-card {
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  border-radius: 2px;
}
.media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.media-card figcaption {
  padding: 10px 12px 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-secondary);
}
.media-grid--compact { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.media-grid--report { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.media-grid--report .media-card img { aspect-ratio: 3 / 4; object-fit: contain; background: #f7f8f6; }

.case-story {
  padding: 64px 0;
}
.case-story:nth-of-type(even) { background: var(--color-bg-light); }
.case-story-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 20px;
}
.case-story-head h2 { color: var(--color-primary-dark); font-size: 27px; }
.case-story-meta { color: var(--color-eco-green); font-size: 14px; font-weight: 600; white-space: nowrap; }
.case-story p { max-width: 900px; line-height: 1.9; color: var(--color-text-secondary); margin-bottom: 14px; }
.case-story .media-grid { margin-top: 26px; }
.case-story--dark { background: var(--color-eco-light); }
.case-story--dark .case-story-head h2 { color: var(--color-primary-dark); }
.story-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 26px 0;
}
.story-fact { padding: 16px; background: var(--color-white); border: 1px solid var(--color-border); }
.story-fact strong { display: block; color: var(--color-eco-green); font-size: 22px; line-height: 1.2; margin-bottom: 4px; }
.story-fact span { color: var(--color-text-secondary); font-size: 13px; }
.case-index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 46px;
}
.case-index-grid a {
  display: block;
  padding: 14px 16px;
  border-left: 3px solid var(--color-eco-green);
  background: var(--color-eco-light);
  color: var(--color-primary-dark);
  font-size: 14px;
}
.case-index-grid a:hover { background: #e0efe7; color: var(--color-eco-green-dark); }

.qr-row {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 20px;
}
.qr-card {
  width: 156px;
  padding: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  text-align: center;
}
.qr-card img { width: 132px; height: 132px; margin: 0 auto 8px; }
.qr-card span { display: block; font-size: 13px; color: var(--color-text-secondary); }
.contact-number-list { display: grid; gap: 8px; margin-top: 18px; }
.contact-number-list a { color: var(--color-eco-green); font-weight: 600; }

.retrofit-gallery { margin-top: 26px; }
.retrofit-gallery .media-card img { aspect-ratio: 4 / 3; }

@media (max-width: 991px) {
  .media-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .media-grid--compact, .media-grid--report { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .story-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-index-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
  .page-header { margin-top: var(--header-h-m); padding: 42px 0; }
  .page-title { font-size: 2rem; }
  .product-section, .case-story { padding: 44px 0; }
  .product-section-head, .case-story-head { display: block; }
  .product-section-head h2, .case-story-head h2 { font-size: 23px; margin-bottom: 12px; }
  .case-story-meta { white-space: normal; }
  .media-grid, .media-grid--compact, .media-grid--report { grid-template-columns: 1fr 1fr; gap: 10px; }
  .story-facts, .case-index-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .story-fact { padding: 13px; }
  .story-fact strong { font-size: 19px; }
  .qr-card { width: 146px; }
  .qr-card img { width: 120px; height: 120px; }
}

/* ==========================================================================\n+   子页面 UI 精修（2026-09-15）\n+   保持水科园的深青绿 + 生态浅绿品牌基调，强化层级、节奏与内容阅读。\n+   ========================================================================== */
.page {
  --page-paper: #fbfcfa;
  --page-panel: #ffffff;
  --page-line: #dce8df;
  --page-ink: #12353a;
  --page-muted: #61736d;
  background: var(--page-paper);
}

.page .container { max-width: 1240px; padding-left: 28px; padding-right: 28px; }
.page main { overflow: hidden; }
.page .site-header {
  background: rgba(251, 253, 250, 0.96);
  border-bottom-color: rgba(18, 53, 58, 0.12);
  box-shadow: 0 1px 0 rgba(18, 53, 58, 0.03);
}
.page .site-header.is-scrolled { box-shadow: 0 8px 26px rgba(18, 53, 58, 0.12); }
.page .brand-text strong { letter-spacing: -0.04em; }

/* 统一页首：用深色建立页面入口，细线圆环是水循环的装饰隐喻。 */
.page .page-header,
.page .page-banner {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  min-height: 246px;
  margin-top: var(--header-h);
  padding: 92px 0 76px !important;
  overflow: hidden;
  background: var(--color-primary-dark) !important;
  color: var(--color-white);
}
.page .page-header::before,
.page .page-banner::before {
  content: '';
  position: absolute;
  z-index: -1;
  width: 420px;
  height: 420px;
  right: -116px;
  top: -214px;
  border: 1px solid rgba(191, 226, 201, 0.24);
  border-radius: 50%;
  box-shadow: 0 0 0 34px rgba(191, 226, 201, 0.05), 0 0 0 68px rgba(191, 226, 201, 0.035);
}
.page .page-header::after,
.page .page-banner::after {
  content: '';
  position: absolute;
  z-index: -1;
  left: 9%;
  bottom: 22px;
  width: 92px;
  height: 4px;
  background: var(--color-eco-green);
}
.page .page-header > .container,
.page .page-banner > .container { position: relative; z-index: 1; width: 100%; }
.page .page-header > .container::before,
.page .page-banner > .container::before {
  content: '水科园 · 北环之星';
  display: block;
  margin-bottom: 16px;
  color: rgba(210, 235, 216, 0.78);
  font-size: 12px;
  letter-spacing: 0.22em;
}
.page .page-title,
.page .page-banner-title {
  margin: 0 !important;
  color: #fff !important;
  font-size: clamp(2.35rem, 5vw, 4.45rem) !important;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.065em;
  text-wrap: balance;
}
.page .page-lead,
.page .page-banner-subtitle {
  max-width: 720px;
  margin-top: 18px;
  color: rgba(241, 248, 243, 0.78);
  font-size: 16px;
  line-height: 1.8;
}

.page .section { padding: 88px 0 96px; }
.page .section-title {
  margin-bottom: 18px;
  color: var(--page-ink);
  font-size: clamp(1.85rem, 3.2vw, 2.55rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.045em;
  text-align: left;
  text-wrap: balance;
}
.page .section-title::after { width: 52px; height: 4px; margin: 16px 0 0; border-radius: 0; }
.page .section-title--light { color: #fff; }
.page .section-title--light::after { background: rgba(255,255,255,0.62); }
.page .section-subtitle,
.page .section-lead,
.page main p { color: var(--page-muted); }
.page .section-lead { max-width: 760px; line-height: 1.95; }
.page a:focus-visible,
.page button:focus-visible,
.page input:focus-visible,
.page select:focus-visible,
.page textarea:focus-visible {
  outline: 3px solid rgba(45, 125, 70, 0.32);
  outline-offset: 3px;
}
.page .btn { border-radius: 4px; box-shadow: 0 8px 18px rgba(30, 77, 58, 0.09); }
.page .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 22px rgba(30, 77, 58, 0.18); }
.page .btn:active { transform: translateY(1px) scale(0.985); }

/* 产品页：每个系列拥有明确的标题栏与图片主次。 */
.page-products .content-intro {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 36px;
  background: #edf5ef;
  border: 1px solid var(--page-line);
  border-top: 0;
  border-bottom: 3px solid var(--color-eco-green);
  color: var(--page-ink);
  font-size: 18px;
  line-height: 1.9;
}
.page-products .product-section {
  position: relative;
  padding: 92px 0 104px;
  border-top: 1px solid rgba(18, 53, 58, 0.08);
}
.page-products .product-section:nth-of-type(odd) { background: #f0f5f1; }
.page-products .product-section-head {
  display: grid;
  grid-template-columns: minmax(250px, 0.8fr) minmax(0, 1.2fr);
  align-items: end;
  gap: 68px;
  margin-bottom: 42px;
}
.page-products .product-section-head > div {
  padding-left: 22px;
  border-left: 4px solid var(--color-eco-green);
}
.page-products .product-section-head h2 {
  color: var(--page-ink);
  font-size: clamp(1.8rem, 3.4vw, 2.65rem);
  line-height: 1.16;
  letter-spacing: -0.055em;
  text-wrap: balance;
}
.page-products .product-section-head p {
  max-width: 630px;
  margin: 0;
  color: var(--page-muted);
  font-size: 16px;
  line-height: 1.95;
}
.page-products .media-grid {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}
.page-products .media-card {
  grid-column: span 2;
  border: 1px solid rgba(18, 53, 58, 0.12);
  border-radius: 10px;
  box-shadow: 0 10px 28px rgba(18, 53, 58, 0.06);
  transition: transform 280ms ease, box-shadow 280ms ease, border-color 280ms ease;
}
.page-products .media-card:first-child { grid-column: span 6; }
.page-products .media-card:hover {
  transform: translateY(-6px);
  border-color: rgba(45, 125, 70, 0.48);
  box-shadow: 0 16px 32px rgba(18, 53, 58, 0.12);
}
.page-products .media-card img { aspect-ratio: 4 / 3; transition: transform 420ms ease; }
.page-products .media-card:first-child img { aspect-ratio: 16 / 10; }
.page-products .media-card:hover img { transform: scale(1.035); }
.page-products .media-card figcaption { padding: 13px 15px 15px; color: var(--page-ink); font-weight: 600; }
.page-products .media-card figcaption::before {
  content: '— ';
  color: var(--color-eco-green);
}
.page-products .product-section-note {
  max-width: 780px;
  margin-top: 28px;
  padding: 18px 20px;
  border: 1px solid var(--page-line);
  border-left: 4px solid var(--color-eco-green);
  background: rgba(255, 255, 255, 0.72);
  color: var(--page-muted);
}

/* 解决方案页：左侧说明 + 右侧四格能力卡，减少长文本的平铺感。 */
.page-solutions main > .section { border-top: 1px solid rgba(18, 53, 58, 0.08); }
.page-solutions main > .section:nth-of-type(even) { background: #f1f6f2; }
.page-solutions .solution-content { display: grid; grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr); gap: 52px; align-items: start; }
.page-solutions .solution-intro {
  margin: 0;
  padding: 26px 28px;
  background: var(--page-panel);
  border-top: 4px solid var(--color-eco-green);
  box-shadow: 0 12px 30px rgba(18, 53, 58, 0.07);
  color: var(--page-ink);
  font-size: 16px;
  line-height: 1.95;
}
.page-solutions .spec-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
.page-solutions .spec-card {
  position: relative;
  min-height: 158px;
  padding: 24px 22px 22px 24px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--page-line);
  border-radius: 8px;
  transition: transform 260ms ease, border-color 260ms ease, box-shadow 260ms ease;
}
.page-solutions .spec-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 38px;
  height: 3px;
  background: var(--color-eco-green);
}
.page-solutions .spec-card:hover { transform: translateY(-4px); border-color: rgba(45, 125, 70, 0.42); box-shadow: 0 12px 24px rgba(18, 53, 58, 0.09); }
.page-solutions .spec-card h4 { margin-bottom: 10px; color: var(--page-ink); font-size: 17px; letter-spacing: -0.02em; }
.page-solutions .spec-card h4::before { content: '↳'; margin-right: 8px; color: var(--color-eco-green); font-weight: 700; }
.page-solutions .spec-card p { margin: 0; color: var(--page-muted); font-size: 14px; line-height: 1.8; }
.page-solutions #black-water { background: #eaf3ec; }
.page-solutions #black-water .solution-intro { background: #1f5140; color: #f5fbf6; }
.page-solutions #black-water .solution-intro p,
.page-solutions #black-water .solution-intro { color: #f5fbf6; }
.page-solutions .section-cta { margin-top: 28px; text-align: left; }

/* 案例页：目录像项目索引，长篇案例用细线与卡片建立阅读节奏。 */
.page-cases #caseStudies { padding-top: 56px; padding-bottom: 42px; background: #f1f6f2; }
.page-cases .case-index-grid {
  position: sticky;
  top: calc(var(--header-h) + 14px);
  z-index: 5;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 10px;
  background: rgba(251, 252, 250, 0.94);
  border: 1px solid var(--page-line);
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(18, 53, 58, 0.08);
}
.page-cases .case-index-grid a {
  min-height: 62px;
  display: flex;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-left: 0;
  border-top: 3px solid var(--color-eco-green);
  border-radius: 6px;
  background: #edf5ef;
  color: var(--page-ink);
  font-weight: 600;
  line-height: 1.45;
}
.page-cases .case-index-grid a:hover { background: #dfece2; color: var(--color-eco-green-dark); transform: translateY(-2px); }
.page-cases .case-story { position: relative; padding: 96px 0 104px; border-top: 1px solid rgba(18, 53, 58, 0.08); }
.page-cases .case-story--dark { background: #eaf3ec; }
.page-cases .case-story-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: start; gap: 34px; margin-bottom: 24px; }
.page-cases .case-story-head h2 { color: var(--page-ink); font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.13; letter-spacing: -0.055em; text-wrap: balance; }
.page-cases .case-story-meta { margin-top: 5px; padding: 8px 12px; border-left: 3px solid var(--color-eco-green); background: rgba(255, 255, 255, 0.7); color: var(--color-eco-green-dark); font-size: 13px; line-height: 1.5; }
.page-cases .case-story p { max-width: 840px; margin-bottom: 16px; color: var(--page-muted); font-size: 16px; line-height: 2; }
.page-cases .case-story .media-grid { margin-top: 34px; gap: 18px; }
.page-cases .case-story .media-card { border: 1px solid rgba(18, 53, 58, 0.12); border-radius: 10px; box-shadow: 0 9px 24px rgba(18, 53, 58, 0.07); transition: transform 260ms ease, box-shadow 260ms ease; }
.page-cases .case-story .media-card:hover { transform: translateY(-5px); box-shadow: 0 16px 30px rgba(18, 53, 58, 0.13); }
.page-cases .story-facts { gap: 15px; margin: 30px 0 8px; }
.page-cases .story-fact { min-height: 126px; padding: 20px 18px; border: 1px solid var(--page-line); border-radius: 8px; box-shadow: 0 7px 18px rgba(18, 53, 58, 0.05); }
.page-cases .story-fact strong { font-variant-numeric: tabular-nums; font-size: 28px; letter-spacing: -0.04em; }

/* 临江村详情：把检测数据与现场见证做成一条证据链。 */
.page-linjiang .story-facts { margin: 0 auto 48px; }
.page-linjiang .story-fact { min-height: 132px; padding: 22px 18px; border: 1px solid var(--page-line); border-radius: 8px; background: #fff; box-shadow: 0 10px 24px rgba(18, 53, 58, 0.06); }
.page-linjiang .story-fact strong { font-size: 29px; font-variant-numeric: tabular-nums; }
.page-linjiang .case-detail { max-width: 900px !important; font-size: 1.06rem !important; line-height: 2 !important; }
.page-linjiang .case-detail > p { max-width: 760px; }
.page-linjiang .case-detail .section-title { margin-top: 64px !important; }
.page-linjiang .case-detail > div[style*="border-left"] {
  margin: 28px 0 !important;
  padding: 20px 24px !important;
  border: 1px solid var(--page-line) !important;
  border-left: 4px solid var(--color-eco-green) !important;
  border-radius: 8px;
  background: #edf5ef !important;
}
.page-linjiang .case-detail > div[style*="border-left"] a { color: var(--color-eco-green-dark) !important; }
.page-linjiang .media-grid--report { padding: 16px; border: 1px solid var(--page-line); border-radius: 10px; background: #f3f7f3; }
.page-linjiang .media-grid--report .media-card { border-radius: 7px; box-shadow: 0 7px 18px rgba(18, 53, 58, 0.07); }

/* 技改页与联系页：统一信息卡、二维码与表单的触感。 */
.page-retrofit .notice-banner {
  padding: 24px 28px !important;
  margin-bottom: 42px !important;
  border: 1px solid var(--page-line);
  border-left: 4px solid var(--color-eco-green);
  border-radius: 8px !important;
  background: #edf5ef !important;
  box-shadow: 0 10px 24px rgba(18, 53, 58, 0.05);
}
.page-retrofit .notice-banner p { margin: 0; color: var(--page-ink); font-size: 17px; line-height: 1.85; }
.page-retrofit .section-lead { max-width: 860px; font-size: 17px; }
.page-retrofit .content-block { margin-bottom: 58px !important; }
.page-retrofit .content-block > p:first-child { max-width: 760px; margin-bottom: 24px; color: var(--page-ink); font-size: 17px; font-weight: 600; }
.page-retrofit .form-container {
  max-width: 700px !important;
  padding: 36px !important;
  border: 1px solid var(--page-line);
  border-top: 4px solid var(--color-eco-green);
  border-radius: 10px !important;
  background: #fff !important;
  box-shadow: 0 16px 34px rgba(18, 53, 58, 0.09) !important;
}
.page-retrofit form input,
.page-retrofit form textarea,
.page-retrofit form select,
.page-contact form input,
.page-contact form textarea,
.page-contact form select {
  min-height: 46px;
  padding: 12px 14px !important;
  border: 1px solid #cddbd1 !important;
  border-radius: 5px !important;
  background: #fbfdfb;
  color: var(--page-ink);
  transition: border-color 200ms ease, box-shadow 200ms ease, background 200ms ease;
}
.page-retrofit form textarea,
.page-contact form textarea { min-height: 110px; resize: vertical; }
.page-retrofit form input:focus,
.page-retrofit form textarea:focus,
.page-retrofit form select:focus,
.page-contact form input:focus,
.page-contact form textarea:focus,
.page-contact form select:focus { border-color: var(--color-eco-green) !important; background: #fff; box-shadow: 0 0 0 4px rgba(45, 125, 70, 0.11); }

.page-contact .section > .container {
  display: grid !important;
  grid-template-columns: minmax(0, 0.92fr) minmax(340px, 1.08fr);
  gap: 58px !important;
  align-items: start;
}
.page-contact .section > .container > div:first-child { min-width: 0 !important; }
.page-contact .section > .container > div:first-child > h2 { margin-bottom: 26px !important; color: var(--page-ink); font-size: clamp(1.8rem, 3vw, 2.35rem); letter-spacing: -0.045em; }
.page-contact .section > .container > div:first-child > p { padding: 14px 0; border-bottom: 1px solid var(--page-line); }
.page-contact .section > .container > div:first-child > p strong { display: inline-block; min-width: 118px; color: var(--page-ink); }
.page-contact .section > .container > div:last-child {
  min-width: 0 !important;
  padding: 36px !important;
  border: 1px solid var(--page-line);
  border-top: 4px solid var(--color-eco-green);
  border-radius: 10px !important;
  background: #fff !important;
  box-shadow: 0 16px 34px rgba(18, 53, 58, 0.09);
}
.page-contact .section > .container > div:last-child h3 { margin-bottom: 24px !important; color: var(--page-ink); font-size: 1.55rem; }
.page-contact .qr-row { gap: 16px; }
.page-contact .qr-card,
.page-about .qr-card,
.page-retrofit .qr-card { border-color: var(--page-line); border-radius: 8px; box-shadow: 0 8px 18px rgba(18, 53, 58, 0.06); transition: transform 240ms ease, box-shadow 240ms ease; }
.page-contact .qr-card:hover,
.page-about .qr-card:hover,
.page-retrofit .qr-card:hover { transform: translateY(-4px); box-shadow: 0 14px 25px rgba(18, 53, 58, 0.12); }

/* 关于页：公司介绍、核心能力、标杆项目分成三层内容卡。 */
.page-about .about-vision {
  margin-bottom: 46px !important;
  padding: 32px 36px !important;
  border: 1px solid var(--page-line);
  border-left: 5px solid var(--color-eco-green) !important;
  border-radius: 8px;
  background: #edf5ef !important;
  box-shadow: 0 10px 24px rgba(18, 53, 58, 0.05);
}
.page-about .about-vision p { color: var(--page-ink) !important; font-size: clamp(1.35rem, 2.7vw, 1.85rem) !important; letter-spacing: -0.035em; }
.page-about .section > .container > div:nth-of-type(2) { max-width: 920px; }
.page-about .section > .container > div:nth-of-type(2) p { margin-bottom: 18px; font-size: 16px; line-height: 2; }
.page-about .section > .container > ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 20px; margin-bottom: 64px !important; }
.page-about .section > .container > ul li { padding: 17px 18px 17px 22px; border: 1px solid var(--page-line); border-left: 3px solid var(--color-eco-green); border-radius: 6px; background: #fff; color: var(--page-muted); }
.page-about .section > .container > h2:nth-of-type(2) { margin-top: 16px; }
.page-about .section > .container > div[style*="background:#f9f9f9"] {
  padding: 34px !important;
  border: 1px solid var(--page-line);
  border-top: 4px solid var(--color-eco-green);
  border-radius: 10px !important;
  background: #fff !important;
  box-shadow: 0 14px 30px rgba(18, 53, 58, 0.07);
}
.page-about .section > .container > div[style*="background:#f9f9f9"] h3 { color: var(--page-ink); font-size: 1.55rem; }
.page-about .section > .container > div[style*="background:#f9f9f9"] > div { gap: 16px !important; }
.page-about .section > .container > div[style*="background:#f9f9f9"] img { max-width: 340px !important; border-radius: 7px !important; }

/* 新闻页与标准页：没有虚构新闻内容，但给页面一个完整、克制的内容容器。 */
.page-news .news-list-container {
  min-height: 260px;
  display: grid !important;
  place-items: center;
  padding: 42px;
  border: 1px dashed #b8cdbd;
  border-radius: 10px;
  background: #f1f6f2;
}
.page-news .news-list-container::before {
  content: '项目动态与技术资讯';
  display: block;
  color: var(--page-ink);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.page-standards .standards-section { margin-bottom: 34px; padding: 28px 30px; border: 1px solid var(--page-line); border-radius: 10px; background: #fff; box-shadow: 0 9px 22px rgba(18, 53, 58, 0.05); }
.page-standards .standards-section h3 { margin-bottom: 20px; padding-left: 16px; border-left: 4px solid var(--color-eco-green); color: var(--page-ink); font-size: 1.45rem; }
.page-standards .standards-table { overflow: hidden; border: 1px solid var(--page-line); border-radius: 7px; border-collapse: separate; border-spacing: 0; }
.page-standards .standards-table th,
.page-standards .standards-table td { padding: 15px 16px; border: 0; border-bottom: 1px solid var(--page-line); line-height: 1.65; }
.page-standards .standards-table th { background: #edf5ef; color: var(--page-ink); font-size: 14px; letter-spacing: 0.04em; }
.page-standards .standards-table tbody tr:last-child td { border-bottom: 0; }
.page-standards .standards-table tbody tr:hover td { background: #f7fbf7; }
.page-standards .standards-note { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--page-line); color: var(--page-muted); }

@media (max-width: 991px) {
  .page-products .product-section-head,
  .page-solutions .solution-content,
  .page-contact .section > .container { grid-template-columns: 1fr; gap: 28px !important; }
  .page-products .product-section-head { align-items: start; }
  .page-cases .case-index-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-cases .case-index-grid { position: static; }
  .page-contact .section > .container > div:last-child { width: 100%; }
}

@media (max-width: 767px) {
  .page .container { padding-left: 20px; padding-right: 20px; }
  .page .page-header,
  .page .page-banner { min-height: 208px; margin-top: var(--header-h-m); padding: 66px 0 54px !important; }
  .page .page-header::after,
  .page .page-banner::after { left: 20px; bottom: 16px; width: 64px; }
  .page .page-header > .container::before,
  .page .page-banner > .container::before { margin-bottom: 11px; font-size: 10px; }
  .page .page-title,
  .page .page-banner-title { font-size: clamp(2rem, 10vw, 3rem) !important; }
  .page .page-lead,
  .page .page-banner-subtitle { margin-top: 13px; font-size: 14px; }
  .page .section { padding: 60px 0 68px; }
  .page .section-title { font-size: 1.8rem; }
  .page-products .content-intro { margin: 0 20px; padding: 22px 20px; font-size: 15px; }
  .page-products .product-section { padding: 60px 0 68px; }
  .page-products .product-section-head { gap: 20px; margin-bottom: 28px; }
  .page-products .product-section-head > div { padding-left: 16px; }
  .page-products .product-section-head h2 { font-size: 1.78rem; }
  .page-products .product-section-head p { font-size: 15px; }
  .page-products .media-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .page-products .media-card,
  .page-products .media-card:first-child { grid-column: span 1; border-radius: 7px; }
  .page-products .media-card:first-child img { aspect-ratio: 4 / 3; }
  .page-products .media-card figcaption { padding: 10px; font-size: 12px; }
  .page-solutions .solution-intro { padding: 20px; font-size: 15px; }
  .page-solutions .spec-grid { gap: 10px; }
  .page-solutions .spec-card { min-height: 0; padding: 18px 15px; }
  .page-solutions .spec-card h4 { font-size: 15px; }
  .page-solutions .spec-card p { font-size: 13px; }
  .page-cases .case-index-grid { grid-template-columns: 1fr 1fr; gap: 8px; padding: 8px; }
  .page-cases .case-index-grid a { min-height: 54px; padding: 10px; font-size: 13px; }
  .page-cases .case-story { padding: 60px 0 68px; }
  .page-cases .case-story-head { display: block; margin-bottom: 18px; }
  .page-cases .case-story-head h2 { font-size: 1.85rem; }
  .page-cases .case-story-meta { display: inline-block; margin-top: 15px; }
  .page-cases .case-story p { font-size: 15px; line-height: 1.9; }
  .page-cases .case-story .media-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .page-cases .story-facts { grid-template-columns: 1fr 1fr; gap: 10px; }
  .page-cases .story-fact { min-height: 112px; padding: 15px 13px; }
  .page-cases .story-fact strong { font-size: 22px; }
  .page-linjiang .case-detail { font-size: 1rem !important; }
  .page-linjiang .media-grid--report { padding: 8px; gap: 8px; }
  .page-retrofit .notice-banner { padding: 18px 20px !important; }
  .page-retrofit .form-container,
  .page-contact .section > .container > div:last-child { padding: 24px 20px !important; }
  .page-about .section > .container > ul { grid-template-columns: 1fr; gap: 10px; }
  .page-about .about-vision { padding: 24px 20px !important; }
  .page-about .section > .container > div[style*="background:#f9f9f9"] { padding: 24px 20px !important; }
  .page-about .section > .container > div[style*="background:#f9f9f9"] img { max-width: 100% !important; }
  .page-news .news-list-container { min-height: 210px; padding: 30px 20px; }
  .page-standards .standards-section { padding: 22px 16px; }
  .page-standards .standards-list { overflow-x: auto; }
  .page-standards .standards-table { min-width: 620px; font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  .page *, .page *::before, .page *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}