/* roulang page: index */
:root {
      --primary: #F59E0B;
      --primary-dark: #D97706;
      --secondary: #1F2937;
      --dark-surface: #111827;
      --light-bg: #F9FAFB;
      --light-alt: #F3F4F6;
      --border-color: #E5E7EB;
      --text-main: #1F2937;
      --text-muted: #4B5563;
      --text-light: #9CA3AF;
      --accent: #10B981;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--light-bg);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, border-color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select {
      font-family: inherit;
      font-size: inherit;
    }
    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    @media (min-width: 640px) { .container { padding-left: 1.5rem; padding-right: 1.5rem; } }
    @media (min-width: 1024px) { .container { padding-left: 2rem; padding-right: 2rem; } }

    /* Top Utility Bar */
    .top-bar {
      background-color: #111827;
      color: #9CA3AF;
      font-size: 0.75rem;
      border-bottom: 1px solid #374151;
      padding: 0.4rem 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-badge-list {
      display: flex;
      gap: 1.25rem;
      align-items: center;
    }
    .top-badge-list span {
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }
    .top-badge-dot {
      width: 6px;
      height: 6px;
      background-color: var(--primary);
      border-radius: 50%;
      display: inline-block;
    }

    /* Main Navigation */
    .site-header {
      background-color: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 50;
      box-shadow: 0 2px 4px rgba(0,0,0,0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-weight: 800;
      font-size: 1.35rem;
      color: #111827;
      letter-spacing: -0.02em;
    }
    .logo-mark {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #ffffff;
      width: 38px;
      height: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 900;
      box-shadow: 0 2px 4px rgba(217, 119, 6, 0.3);
    }
    .nav-menu {
      display: flex;
      gap: 1.75rem;
      list-style: none;
      align-items: center;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: #4B5563;
      padding: 0.5rem 0.25rem;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: #111827;
      font-weight: 600;
    }
    .nav-link:hover::after, .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--primary);
    }
    .header-cta {
      display: inline-flex;
      align-items: center;
      background-color: #111827;
      color: #ffffff;
      padding: 0.6rem 1.25rem;
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid #1f2937;
      transition: all 0.2s ease;
    }
    .header-cta:hover {
      background-color: var(--primary-dark);
      border-color: var(--primary-dark);
      color: #ffffff;
    }

    /* Section Global Utility */
    section {
      padding-top: 5rem;
      padding-bottom: 5rem;
    }
    .section-head {
      margin-bottom: 3.5rem;
    }
    .section-head.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--primary-dark);
      background-color: #FEF3C7;
      padding: 0.3rem 0.75rem;
      border-radius: var(--radius-sm);
      margin-bottom: 0.75rem;
      border: 1px solid #FDE68A;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.3;
      color: #111827;
      margin-bottom: 1rem;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 1. Hero Section (资源下载站版式：居中搜索 + 快捷分类) */
    .hero-search-station {
      background: linear-gradient(rgba(17, 24, 39, 0.85), rgba(17, 24, 39, 0.92)), url('/assets/images/8a51133cd8106a6c.webp') center/cover no-repeat;
      color: #ffffff;
      padding-top: 6rem;
      padding-bottom: 6.5rem;
      text-align: center;
      position: relative;
    }
    .hero-container {
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-headline {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-headline span {
      color: var(--primary);
    }
    .hero-summary {
      font-size: 1.05rem;
      line-height: 1.85;
      color: #D1D5DB;
      margin-bottom: 2.5rem;
      max-width: 860px;
      margin-left: auto;
      margin-right: auto;
    }
    .search-console {
      background: #ffffff;
      padding: 0.5rem;
      border-radius: var(--radius-md);
      box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
      display: flex;
      gap: 0.5rem;
      max-width: 720px;
      margin: 0 auto 1.75rem;
    }
    .search-console input {
      flex: 1;
      border: none;
      outline: none;
      padding: 0.85rem 1.25rem;
      font-size: 1rem;
      color: #1F2937;
    }
    .search-btn {
      background-color: var(--primary);
      color: #111827;
      font-weight: 700;
      border: none;
      padding: 0.85rem 1.75rem;
      border-radius: var(--radius-sm);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: background 0.2s ease;
    }
    .search-btn:hover {
      background-color: #FBBF24;
    }
    .hero-hot-tags {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 0.6rem;
      font-size: 0.875rem;
      color: #9CA3AF;
    }
    .hot-badge {
      background-color: rgba(255, 255, 255, 0.1);
      color: #F3F4F6;
      padding: 0.3rem 0.85rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.15);
      transition: all 0.2s ease;
    }
    .hot-badge:hover {
      background-color: var(--primary);
      color: #111827;
      border-color: var(--primary);
    }

    /* 2. 已上线能力 (Launched Capabilities) */
    .section-launched {
      background-color: #ffffff;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .feature-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      background: #ffffff;
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #FCD34D;
    }
    .feature-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      font-size: 0.75rem;
      color: var(--accent);
      background-color: #ECFDF5;
      padding: 0.25rem 0.6rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      margin-bottom: 1.25rem;
    }
    .feature-badge-live::before {
      content: '';
      width: 6px;
      height: 6px;
      background-color: var(--accent);
      border-radius: 50%;
    }
    .feature-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 0.75rem;
    }
    .feature-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .feature-specs {
      border-top: 1px dashed var(--border-color);
      padding-top: 1rem;
      font-size: 0.85rem;
      color: #4B5563;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }

    /* 3. 进行中模块 (In-Progress Capabilities) */
    .section-progress {
      background-color: var(--light-alt);
    }
    .progress-banner-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
      align-items: center;
    }
    .progress-info {
      padding-right: 1.5rem;
    }
    .progress-steps {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      margin-top: 2rem;
    }
    .step-item {
      display: flex;
      gap: 1.25rem;
      background: #ffffff;
      padding: 1.25rem;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1;
    }
    .step-body h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 0.35rem;
    }
    .step-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .progress-media {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .progress-media img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    /* 4. 规划中能力 (Roadmap Capabilities) */
    .section-roadmap {
      background-color: #ffffff;
    }
    .roadmap-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .roadmap-item {
      background-color: #FAFAFA;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem 1.5rem;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .roadmap-stage {
      font-size: 0.75rem;
      font-weight: 700;
      color: #6366F1;
      background-color: #EEF2FF;
      display: inline-block;
      align-self: flex-start;
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
    }
    .roadmap-item h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 0.65rem;
    }
    .roadmap-item p {
      font-size: 0.885rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. 核心制造标准对照 (#about) */
    .section-about {
      background-color: #F8FAFC;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .about-visual {
      position: relative;
    }
    .about-visual img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      height: 440px;
      width: 100%;
      object-fit: cover;
    }
    .about-stat-overlay {
      position: absolute;
      bottom: -1.5rem;
      right: 1.5rem;
      background-color: #111827;
      color: #ffffff;
      padding: 1.25rem 1.75rem;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--primary);
      box-shadow: var(--shadow-lg);
    }
    .about-stat-overlay .stat-val {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
    }
    .about-stat-overlay .stat-lbl {
      font-size: 0.8rem;
      color: #9CA3AF;
    }
    .about-content h2 {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.35;
      color: #111827;
      margin-bottom: 1.25rem;
    }
    .about-content p {
      font-size: 0.985rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 1.5rem;
    }
    .about-metrics-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
      margin-top: 1.5rem;
    }
    .about-metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 1rem;
      border-radius: var(--radius-sm);
    }
    .about-metric-card strong {
      display: block;
      color: #111827;
      font-size: 1.1rem;
      margin-bottom: 0.25rem;
    }
    .about-metric-card span {
      font-size: 0.825rem;
      color: #6B7280;
    }

    /* 6. 工程核心优势矩阵 (#advantages) */
    .section-advantages {
      background-color: #ffffff;
    }
    .adv-grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .adv-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: all 0.25s ease;
    }
    .adv-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .adv-icon {
      width: 48px;
      height: 48px;
      background-color: #FFFBEB;
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 800;
      font-size: 1.25rem;
      margin-bottom: 1.25rem;
      border: 1px solid #FDE68A;
    }
    .adv-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 0.65rem;
    }
    .adv-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 7. 核心设备精选 (#products) */
    .section-products {
      background-color: var(--light-alt);
    }
    .product-deck {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .product-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .product-thumb {
      height: 230px;
      overflow: hidden;
      position: relative;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.04);
    }
    .product-tag-float {
      position: absolute;
      top: 0.75rem;
      left: 0.75rem;
      background: rgba(17, 24, 39, 0.85);
      color: #ffffff;
      font-size: 0.75rem;
      padding: 0.25rem 0.6rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .product-body {
      padding: 1.75rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .product-model {
      font-size: 0.8rem;
      color: #9CA3AF;
      font-weight: 600;
      margin-bottom: 0.35rem;
    }
    .product-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 0.75rem;
    }
    .product-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex: 1;
    }
    .product-param-table {
      background: #F9FAFB;
      border-radius: var(--radius-sm);
      padding: 0.75rem 1rem;
      font-size: 0.85rem;
      color: #374151;
      margin-bottom: 1.25rem;
      display: flex;
      justify-content: space-between;
    }
    .product-action-btn {
      display: block;
      text-align: center;
      background: #F3F4F6;
      color: #111827;
      font-weight: 600;
      font-size: 0.9rem;
      padding: 0.65rem 0;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      transition: all 0.2s ease;
    }
    .product-action-btn:hover {
      background: var(--primary);
      border-color: var(--primary);
      color: #111827;
    }

    /* 8. 深色工况极端测试 (#dark-cases) */
    .section-dark-cases {
      background-color: var(--dark-surface);
      color: #ffffff;
    }
    .dark-headline {
      color: #ffffff;
    }
    .dark-desc {
      color: #9CA3AF;
    }
    .dark-test-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      margin-top: 3rem;
    }
    .test-box {
      background-color: var(--secondary);
      border: 1px solid #374151;
      border-radius: var(--radius-md);
      padding: 2.25rem 1.75rem;
      position: relative;
    }
    .test-box::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--primary);
    }
    .test-metric {
      font-size: 2.25rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 0.5rem;
    }
    .test-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 0.75rem;
    }
    .test-detail {
      font-size: 0.92rem;
      color: #D1D5DB;
      line-height: 1.7;
    }

    /* 9. 施工工长应用故事 (#stories) */
    .section-stories {
      background-color: #ffffff;
    }
    .stories-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
    }
    .story-card {
      background: #F9FAFB;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .story-img-wrap {
      height: 240px;
      overflow: hidden;
    }
    .story-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 2rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .story-role {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary-dark);
      text-transform: uppercase;
      margin-bottom: 0.5rem;
    }
    .story-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: #111827;
      margin-bottom: 0.85rem;
    }
    .story-quote {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 1.25rem;
      position: relative;
      font-style: normal;
    }
    .story-meta {
      margin-top: auto;
      padding-top: 1rem;
      border-top: 1px solid var(--border-color);
      font-size: 0.85rem;
      color: #6B7280;
      display: flex;
      justify-content: space-between;
    }

    /* 10. 硬核制造与工效数据统计条 (Metrics Bar) */
    .section-metrics-bar {
      background: linear-gradient(135deg, #111827 0%, #1F2937 100%);
      color: #ffffff;
      padding: 4rem 0;
      border-top: 1px solid #374151;
      border-bottom: 1px solid #374151;
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item {
      padding: 1rem;
      position: relative;
    }
    .metric-item:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(255, 255, 255, 0.12);
    }
    .metric-number {
      font-size: 3rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 0.4rem;
      letter-spacing: -0.03em;
    }
    .metric-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #F9FAFB;
      margin-bottom: 0.35rem;
    }
    .metric-sub {
      font-size: 0.825rem;
      color: #9CA3AF;
    }

    /* 11. 施工装企与监理综合评价墙 (Testimonials) */
    .section-testimonials {
      background-color: #ffffff;
    }
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .testi-card {
      background: #FAFAFA;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.2s ease;
    }
    .testi-card:hover {
      background: #ffffff;
      border-color: #FCD34D;
      box-shadow: var(--shadow-md);
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 0.9rem;
      letter-spacing: 2px;
      margin-bottom: 0.85rem;
    }
    .testi-text {
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 1.25rem;
    }
    .testi-person {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      padding-top: 1rem;
      border-top: 1px solid var(--border-color);
    }
    .testi-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #E5E7EB;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #374151;
      font-size: 0.9rem;
    }
    .testi-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: #111827;
      line-height: 1.3;
    }
    .testi-role {
      font-size: 0.8rem;
      color: #6B7280;
    }

    /* 12. 全场景施工配套方案推荐 (Solutions Matrix) */
    .section-solutions {
      background-color: #F8FAFC;
    }
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .sol-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem 1.5rem;
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .sol-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .sol-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: #1E40AF;
      background: #DBEAFE;
      display: inline-block;
      align-self: flex-start;
      padding: 0.25rem 0.6rem;
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
    }
    .sol-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 0.75rem;
    }
    .sol-card p {
      font-size: 0.885rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
    }
    .sol-items {
      list-style: none;
      margin-bottom: 1.5rem;
      flex: 1;
    }
    .sol-items li {
      font-size: 0.85rem;
      color: #374151;
      padding: 0.35rem 0;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .sol-items li::before {
      content: '✔';
      color: var(--accent);
      font-size: 0.8rem;
    }
    .sol-btn {
      text-align: center;
      background: #111827;
      color: #ffffff;
      font-size: 0.85rem;
      font-weight: 600;
      padding: 0.65rem 0;
      border-radius: var(--radius-sm);
      transition: background 0.2s ease;
    }
    .sol-btn:hover {
      background: var(--primary);
      color: #111827;
    }

    /* 13. 施工维保资讯与工艺手册 (#news) */
    .section-news {
      background-color: #ffffff;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .news-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }
    .news-img {
      height: 200px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .news-card:hover .news-img img {
      transform: scale(1.05);
    }
    .news-content {
      padding: 1.5rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.785rem;
      color: #9CA3AF;
      margin-bottom: 0.5rem;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #111827;
      line-height: 1.45;
      margin-bottom: 0.75rem;
    }
    .news-summary {
      font-size: 0.885rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
      flex: 1;
    }
    .news-link-btn {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary-dark);
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
    }
    .news-link-btn:hover {
      color: #111827;
    }

    /* 14. 选型手风琴 FAQ (Accordion) */
    .section-faq {
      background-color: var(--light-alt);
    }
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .faq-header {
      padding: 1.25rem 1.5rem;
      font-size: 1.05rem;
      font-weight: 700;
      color: #111827;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      transition: background 0.2s ease;
    }
    .faq-header:hover {
      background: #F9FAFB;
    }
    .faq-icon-cross {
      font-size: 1.25rem;
      font-weight: 400;
      color: var(--text-light);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon-cross {
      transform: rotate(45deg);
      color: var(--primary-dark);
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FFFFFF;
    }
    .faq-body-inner {
      padding: 0 1.5rem 1.5rem;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.8;
      border-top: 1px solid #F3F4F6;
    }

    /* 15. 底部订阅与工效测试报告预约 (Subscribe & CTA) */
    .section-cta {
      background: linear-gradient(135deg, var(--primary-dark) 0%, #B45309 100%);
      color: #ffffff;
      padding: 5rem 0;
    }
    .cta-box {
      max-width: 880px;
      margin: 0 auto;
      text-align: center;
    }
    .cta-box h2 {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1rem;
    }
    .cta-box p {
      font-size: 1.05rem;
      color: #FEF3C7;
      line-height: 1.75;
      margin-bottom: 2rem;
    }
    .cta-form {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      justify-content: center;
      max-width: 720px;
      margin: 0 auto;
    }
    .cta-input, .cta-select {
      flex: 1;
      min-width: 180px;
      padding: 0.85rem 1.15rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.4);
      background: #ffffff;
      color: #111827;
      outline: none;
    }
    .cta-submit {
      background: #111827;
      color: #ffffff;
      border: none;
      font-weight: 700;
      padding: 0.85rem 2rem;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: background 0.2s ease;
    }
    .cta-submit:hover {
      background: #000000;
    }

    /* Footer */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      font-size: 0.875rem;
      padding-top: 4.5rem;
      padding-bottom: 3rem;
      border-top: 1px solid #1E293B;
    }
    .footer-columns {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-brand p {
      font-size: 0.885rem;
      line-height: 1.75;
      color: #64748B;
      margin-bottom: 1.5rem;
    }
    .footer-col h5 {
      color: #F8FAFC;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-contact-info p {
      margin-bottom: 0.5rem;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.825rem;
      color: #64748B;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .grid-3, .dark-test-grid, .adv-grid-6, .product-deck, .testi-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .roadmap-grid, .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item:nth-child(2)::after {
        display: none;
      }
      .footer-columns {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .header-inner { height: 60px; }
      .nav-menu { display: none; }
      .hero-headline { font-size: 1.85rem; }
      .section-title { font-size: 1.65rem; }
      .grid-3, .dark-test-grid, .adv-grid-6, .product-deck, .testi-grid, .news-grid, .roadmap-grid, .solutions-grid, .progress-banner-grid, .about-split, .stories-container, .metrics-row {
        grid-template-columns: 1fr;
      }
      .metric-item::after { display: none !important; }
      .cta-form { flex-direction: column; }
      .search-console { flex-direction: column; }
      .search-btn { width: 100%; justify-content: center; }
      .footer-columns { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }