/* roulang page: index */
:root {
      --bg-base: #F4F6F9;
      --bg-surface: #FFFFFF;
      --bg-dark: #1A1F2C;
      --bg-dark-card: #232938;
      --primary: #00A896;
      --primary-hover: #028090;
      --accent-green: #2DC653;
      --accent-amber: #F4A261;
      --text-main: #1A1F2C;
      --text-muted: #5A6578;
      --text-light: #F4F6F9;
      --border-color: #E2E8F0;
      --border-dark: #2F374A;
      --shadow-sm: 0 2px 8px rgba(26, 31, 44, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(26, 31, 44, 0.07);
      --shadow-lg: 0 10px 30px -5px rgba(26, 31, 44, 0.12);
      --radius-sm: 4px;
      --radius-md: 8px;
      --font-mono: "JetBrains Mono", Consolas, Monaco, monospace;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, background-color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    input, button, select, textarea {
      font: inherit;
    }
    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .top-bar {
      background-color: var(--bg-dark);
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid var(--border-dark);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 8px;
      padding-bottom: 8px;
    }
    .top-bar-links {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .top-bar-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #CBD5E1;
    }
    .top-bar-badge {
      display: inline-block;
      padding: 2px 8px;
      background-color: rgba(0, 168, 150, 0.2);
      color: var(--primary);
      border-radius: var(--radius-sm);
      font-family: var(--font-mono);
      font-size: 0.75rem;
      font-weight: 600;
    }
    .main-header {
      background-color: rgba(255, 255, 255, 0.95);
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text-main);
    }
    .brand-mark {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--primary-hover));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 900;
      font-size: 1.1rem;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 28px;
      align-items: center;
    }
    .nav-item a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 0;
      position: relative;
    }
    .nav-item a:hover {
      color: var(--primary);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 12px rgba(0, 168, 150, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(0, 168, 150, 0.35);
    }
    .btn-outline {
      background-color: transparent;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      background-color: rgba(0, 168, 150, 0.05);
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-dark {
      background-color: var(--bg-dark);
      color: #FFF;
      border-color: var(--border-dark);
    }
    .btn-dark:hover {
      background-color: #2D3748;
    }
    .section-sp {
      padding-top: 88px;
      padding-bottom: 88px;
    }
    .section-alt {
      background-color: var(--bg-surface);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-light);
    }
    .section-heading-wrap {
      margin-bottom: 48px;
    }
    .section-heading-wrap.center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-eyebrow {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--primary);
      margin-bottom: 12px;
      background: rgba(0, 168, 150, 0.08);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
    }
    .section-heading {
      font-size: 2.125rem;
      font-weight: 700;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .section-dark .section-heading {
      color: #FFF;
    }
    .section-lead {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-lead {
      color: #94A3B8;
    }
    .hero-banner {
      position: relative;
      background: linear-gradient(135deg, rgba(26, 31, 44, 0.94) 0%, rgba(26, 31, 44, 0.86) 100%), url('/assets/images/dda90a080d3bea97.gif') center/cover no-repeat;
      color: #FFF;
      padding-top: 80px;
      padding-bottom: 96px;
      border-bottom: 1px solid var(--border-dark);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }
    .hero-title {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
    }
    .hero-title .highlight {
      color: var(--primary);
    }
    .hero-description {
      font-size: 1.125rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .fission-box {
      background: rgba(35, 41, 56, 0.85);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 28px;
      backdrop-filter: blur(12px);
      box-shadow: var(--shadow-lg);
    }
    .fission-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }
    .fission-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: #FFF;
    }
    .fission-status {
      font-family: var(--font-mono);
      font-size: 0.875rem;
      color: var(--accent-green);
    }
    .progress-bar-wrap {
      width: 100%;
      height: 8px;
      background: #374151;
      border-radius: 4px;
      margin-bottom: 16px;
      overflow: hidden;
    }
    .progress-bar-fill {
      width: 78%;
      height: 100%;
      background: linear-gradient(90deg, var(--primary), var(--accent-green));
      border-radius: 4px;
    }
    .fission-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-bottom: 24px;
    }
    .fission-actions {
      display: flex;
      gap: 12px;
    }
    .global-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .stat-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.25s ease;
    }
    .stat-card:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .stat-num {
      font-family: var(--font-mono);
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .stat-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .scene-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .scene-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .scene-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .scene-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .scene-card:hover .scene-thumb img {
      transform: scale(1.05);
    }
    .scene-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .scene-tag {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .scene-title {
      font-size: 1.1875rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .scene-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      flex: 1;
    }
    .local-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .local-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      position: relative;
      transition: all 0.25s ease;
    }
    .local-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .local-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(0, 168, 150, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }
    .local-title {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .local-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .matrix-table-wrap {
      overflow-x: auto;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-dark);
      background: var(--bg-dark-card);
    }
    .matrix-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9375rem;
    }
    .matrix-table th, .matrix-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-dark);
    }
    .matrix-table th {
      background: #151922;
      color: #94A3B8;
      font-weight: 600;
    }
    .matrix-table tr:last-child td {
      border-bottom: none;
    }
    .matrix-table td:nth-child(2) {
      color: #94A3B8;
    }
    .matrix-table td:nth-child(3) {
      color: var(--primary);
      font-weight: 600;
    }
    .matrix-badge-pass {
      color: var(--accent-green);
      font-weight: 600;
    }
    .case-container {
      display: flex;
      flex-direction: column;
      gap: 32px;
    }
    .case-card {
      display: grid;
      grid-template-columns: 420px 1fr;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-surface);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .case-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .case-image {
      height: 100%;
      min-height: 280px;
    }
    .case-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 36px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-client {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .case-title {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 14px;
      line-height: 1.35;
    }
    .case-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .case-data-row {
      display: flex;
      gap: 28px;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
    }
    .case-data-item {
      font-family: var(--font-mono);
    }
    .case-data-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .case-data-lbl {
      font-size: 0.75rem;
      color: var(--text-muted);
      font-family: var(--font-sans);
    }
    .timeline-wrap {
      position: relative;
      padding: 32px 0;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 0;
      bottom: 0;
      width: 2px;
      background: var(--border-color);
      transform: translateX(-50%);
    }
    .timeline-node {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-node:nth-child(even) {
      flex-direction: row-reverse;
    }
    .timeline-content {
      width: 44%;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .timeline-dot {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 14px;
      height: 14px;
      background: var(--primary);
      border: 3px solid #FFF;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
    }
    .timeline-date {
      font-family: var(--font-mono);
      font-weight: 700;
      color: var(--primary);
      font-size: 0.875rem;
      margin-bottom: 6px;
    }
    .timeline-title {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .timeline-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--bg-surface);
      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 {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .news-thumb {
      height: 180px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: #94A3B8;
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.0625rem;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .news-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 48px;
    }
    .guarantee-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }
    .guarantee-icon {
      font-size: 1.5rem;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .guarantee-title {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .guarantee-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-trigger:hover {
      color: var(--primary);
    }
    .faq-content {
      padding: 0 24px 20px;
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .contact-form-wrap {
      max-width: 760px;
      margin: 0 auto;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9375rem;
      color: var(--text-main);
      background: #FFF;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .form-privacy {
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-top: 14px;
      line-height: 1.5;
      text-align: center;
    }
    .site-footer {
      background-color: var(--bg-dark);
      color: #94A3B8;
      border-top: 1px solid var(--border-dark);
      padding-top: 64px;
      padding-bottom: 32px;
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand-desc {
      line-height: 1.7;
      color: #94A3B8;
      font-size: 0.875rem;
      margin-bottom: 20px;
    }
    .footer-heading {
      font-size: 0.9375rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 16px;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-contact-item {
      margin-bottom: 10px;
      display: flex;
      align-items: flex-start;
      gap: 8px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-dark);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #CBD5E1;
    }
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .global-stats-grid, .scene-grid, .local-grid, .news-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-card {
        grid-template-columns: 1fr;
      }
      .case-image {
        min-height: 220px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .section-sp {
        padding-top: 56px;
        padding-bottom: 56px;
      }
      .section-heading {
        font-size: 1.75rem;
      }
      .timeline-wrap::before {
        left: 20px;
      }
      .timeline-node, .timeline-node:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 44px;
      }
      .timeline-dot {
        left: 20px;
      }
      .timeline-content {
        width: 100%;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }
    @media (max-width: 520px) {
      .global-stats-grid, .scene-grid, .local-grid, .news-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .fission-actions {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }