/* roulang page: index */
:root {
      --color-primary: #0F2B28;
      --color-primary-light: #1A3E3A;
      --color-accent: #00C48C;
      --color-accent-hover: #00aa78;
      --color-surface-subtle: #F4F7F6;
      --color-border: #E2E8F0;
      --color-dark-bg: #0A1A18;
      --color-dark-card: #132A26;
      --color-title: #0D1716;
      --color-text: #475569;
      --color-text-muted: #64748B;
      --color-white: #FFFFFF;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 4px rgba(15, 43, 40, 0.04);
      --shadow-md: 0 4px 6px -1px rgba(15, 43, 40, 0.05), 0 2px 4px -2px rgba(15, 43, 40, 0.03);
      --shadow-lg: 0 12px 24px -4px rgba(15, 43, 40, 0.08), 0 4px 6px -2px rgba(15, 43, 40, 0.04);
      --transition-base: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      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(--color-text);
      background-color: var(--color-white);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    .container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Top Bar */
    .top-bar {
      height: 36px;
      background-color: #081413;
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .top-bar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .indicator-dot {
      width: 8px;
      height: 8px;
      background: var(--color-accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--color-accent);
    }
    .top-bar-links a {
      color: #CBD5E1;
      margin-left: 20px;
    }
    .top-bar-links a:hover {
      color: var(--color-accent);
    }

    /* Sticky Nav */
    .main-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .brand-logo {
      font-size: 22px;
      font-weight: 700;
      color: var(--color-primary);
      display: flex;
      align-items: center;
      gap: 8px;
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 28px;
      height: 28px;
      fill: var(--color-accent);
    }
    .nav-links {
      display: flex;
      gap: 32px;
      list-style: none;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--color-title);
      font-size: 15px;
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--color-accent);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: -6px;
      left: 0;
      background: var(--color-accent);
      transition: var(--transition-base);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-cta-btn {
      background: var(--color-primary);
      color: var(--color-white);
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 14px;
      border: 1px solid var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .nav-cta-btn:hover {
      background: var(--color-accent);
      color: var(--color-primary);
      border-color: var(--color-accent);
    }

    /* Section Styles */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-subtle {
      background-color: var(--color-surface-subtle);
    }
    .section-dark {
      background-color: var(--color-dark-bg);
      color: #CBD5E1;
    }
    .section-header {
      margin-bottom: 56px;
      text-align: center;
    }
    .section-header.text-left {
      text-align: left;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--color-accent);
      background: rgba(0, 196, 140, 0.1);
      padding: 4px 12px;
      border-radius: 30px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--color-title);
      letter-spacing: -0.5px;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-dark .section-title {
      color: var(--color-white);
    }
    .section-desc {
      font-size: 16px;
      color: var(--color-text-muted);
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }
    .text-left .section-desc {
      margin-left: 0;
    }

    /* Hero Section */
    .hero-banner {
      background: linear-gradient(135deg, rgba(10, 26, 24, 0.92) 0%, rgba(15, 43, 40, 0.88) 100%), url('/assets/images/17a76b446a03b32e.jpg') center/cover no-repeat;
      color: var(--color-white);
      padding: 108px 0 120px;
      position: relative;
    }
    .hero-content {
      max-width: 860px;
      position: relative;
      z-index: 2;
    }
    .hero-badge-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 24px;
    }
    .hero-fire-tag {
      background: #E11D48;
      color: #FFF;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      text-transform: uppercase;
    }
    .hero-notice {
      color: #A7F3D0;
      font-size: 14px;
      font-weight: 500;
    }
    .hero-title {
      font-size: 46px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-desc {
      font-size: 18px;
      line-height: 1.75;
      color: #CBD5E1;
      margin-bottom: 40px;
      max-width: 780px;
    }
    .hero-action-group {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-hero-primary {
      background: var(--color-accent);
      color: #06231E;
      font-weight: 700;
      padding: 14px 34px;
      border-radius: var(--radius-sm);
      font-size: 16px;
      border: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 16px rgba(0, 196, 140, 0.35);
    }
    .btn-hero-primary:hover {
      background: #05dfa0;
      transform: translateY(-2px);
    }
    .btn-hero-outline {
      border: 1px solid rgba(255, 255, 255, 0.3);
      color: #FFF;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 600;
    }
    .btn-hero-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #FFF;
    }

    /* KPI Bar */
    .kpi-strip {
      background: var(--color-white);
      margin-top: -48px;
      position: relative;
      z-index: 10;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--color-border);
      padding: 32px 40px;
    }
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .kpi-item {
      border-right: 1px solid var(--color-border);
      padding-right: 16px;
    }
    .kpi-item:last-child {
      border-right: none;
    }
    .kpi-num {
      font-size: 36px;
      font-weight: 900;
      color: var(--color-primary);
      font-family: Consolas, "PingFang SC", sans-serif;
      line-height: 1.1;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .kpi-num span {
      font-size: 16px;
      font-weight: 600;
      color: var(--color-accent);
    }
    .kpi-label {
      font-size: 14px;
      color: var(--color-text);
      font-weight: 600;
      margin-top: 8px;
    }
    .kpi-sub {
      font-size: 12px;
      color: var(--color-text-muted);
      margin-top: 4px;
    }

    /* Grid & Cards */
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      align-items: center;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    /* Feature Cards */
    .feature-card {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 32px;
      transition: var(--transition-base);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .feature-card:hover {
      border-color: var(--color-accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: rgba(0, 196, 140, 0.12);
      color: var(--color-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }
    .card-icon svg {
      width: 24px;
      height: 24px;
      fill: currentColor;
    }
    .card-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--color-title);
      margin-bottom: 12px;
    }
    .card-text {
      font-size: 14px;
      color: var(--color-text);
      line-height: 1.7;
    }

    /* Hardware Cards */
    .hw-card {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition-base);
    }
    .hw-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .hw-img-wrap {
      height: 200px;
      position: relative;
      overflow: hidden;
      background: #E2E8F0;
    }
    .hw-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition-base);
    }
    .hw-card:hover .hw-img-wrap img {
      transform: scale(1.05);
    }
    .hw-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .hw-tag {
      font-size: 12px;
      color: var(--color-accent);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .hw-spec-list {
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px dashed var(--color-border);
      list-style: none;
      font-size: 13px;
      color: var(--color-text-muted);
    }
    .hw-spec-list li {
      margin-bottom: 6px;
      display: flex;
      justify-content: space-between;
    }

    /* Benchmarking Table */
    .compare-container {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .compare-row {
      display: grid;
      grid-template-columns: 240px 1fr 1fr;
      padding: 20px 24px;
      border-bottom: 1px solid var(--color-border);
      align-items: center;
    }
    .compare-row:last-child {
      border-bottom: none;
    }
    .compare-header {
      background: var(--color-surface-subtle);
      font-weight: 700;
      color: var(--color-title);
      font-size: 15px;
    }
    .compare-cell-dim {
      font-weight: 600;
      color: var(--color-title);
      font-size: 15px;
    }
    .compare-cell-trad {
      color: #64748B;
      font-size: 14px;
    }
    .compare-cell-smart {
      color: #065F46;
      font-size: 14px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* Process Flow */
    .flow-card {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      position: relative;
    }
    .flow-num {
      width: 36px;
      height: 36px;
      background: var(--color-primary);
      color: var(--color-accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
      margin-bottom: 16px;
    }

    /* Testimonials */
    .testimonial-card {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 15px;
      line-height: 1.7;
      color: var(--color-text);
      margin-bottom: 20px;
      font-style: normal;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 16px;
      border-top: 1px solid var(--color-surface-subtle);
    }
    .author-info h4 {
      font-size: 15px;
      color: var(--color-title);
    }
    .author-info p {
      font-size: 12px;
      color: var(--color-text-muted);
    }

    /* Milestones Timeline */
    .timeline {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    .timeline::after {
      content: '';
      position: absolute;
      width: 2px;
      background: var(--color-border);
      top: 0;
      bottom: 0;
      left: 50%;
      margin-left: -1px;
    }
    .timeline-item {
      padding: 10px 40px;
      position: relative;
      width: 50%;
    }
    .timeline-left {
      left: 0;
      text-align: right;
    }
    .timeline-right {
      left: 50%;
    }
    .timeline-item::after {
      content: '';
      position: absolute;
      width: 14px;
      height: 14px;
      right: -7px;
      background: var(--color-white);
      border: 3px solid var(--color-accent);
      top: 18px;
      border-radius: 50%;
      z-index: 1;
    }
    .timeline-right::after {
      left: -7px;
    }
    .timeline-box {
      padding: 20px 24px;
      background: var(--color-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
    }
    .timeline-date {
      font-weight: 800;
      color: var(--color-accent);
      font-size: 16px;
      margin-bottom: 6px;
    }

    /* News Insight */
    .news-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 32px;
    }
    .news-featured {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-featured-img {
      height: 260px;
      overflow: hidden;
    }
    .news-featured-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-featured-body {
      padding: 28px;
    }
    .news-list-col {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .news-item-sm {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: var(--transition-base);
    }
    .news-item-sm:hover {
      border-color: var(--color-accent);
      transform: translateX(4px);
    }
    .news-date-tag {
      font-size: 12px;
      color: var(--color-text-muted);
      margin-bottom: 6px;
    }

    /* FAQ Details */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    details.faq-item {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 18px 24px;
      transition: var(--transition-base);
    }
    details.faq-item[open] {
      border-color: var(--color-accent);
      box-shadow: var(--shadow-sm);
    }
    summary.faq-question {
      font-weight: 700;
      font-size: 16px;
      color: var(--color-title);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    summary.faq-question::-webkit-details-marker {
      display: none;
    }
    summary.faq-question::after {
      content: '+';
      font-size: 20px;
      color: var(--color-accent);
      font-weight: 400;
      transition: transform 0.2s ease;
    }
    details[open] summary.faq-question::after {
      content: '−';
    }
    .faq-answer {
      margin-top: 12px;
      font-size: 14px;
      color: var(--color-text);
      line-height: 1.7;
      padding-top: 12px;
      border-top: 1px solid var(--color-surface-subtle);
    }

    /* Action Form Section */
    .form-container {
      background: var(--color-dark-bg);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: var(--color-white);
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-lg);
    }
    .form-grid-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .form-left h3 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .form-left p {
      color: #94A3B8;
      font-size: 15px;
      margin-bottom: 24px;
    }
    .form-feature-point {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .form-feature-point svg {
      width: 18px;
      height: 18px;
      fill: var(--color-accent);
    }
    .booking-form {
      background: #112623;
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: #CBD5E1;
    }
    .form-control {
      width: 100%;
      height: 44px;
      background: #0A1A18;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      color: #FFF;
      padding: 0 14px;
      transition: var(--transition-base);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--color-accent);
      box-shadow: 0 0 0 2px rgba(0, 196, 140, 0.2);
    }
    .btn-submit {
      width: 100%;
      height: 48px;
      background: var(--color-accent);
      color: #081C19;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 15px;
      cursor: pointer;
      transition: var(--transition-base);
      margin-top: 8px;
    }
    .btn-submit:hover {
      background: #05dfa0;
    }

    /* Footer */
    .site-footer {
      background: #061311;
      color: #94A3B8;
      padding: 64px 0 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 20px;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      max-width: 320px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--color-accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #CBD5E1;
    }

    /* Mobile Drawer */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--color-primary);
    }

    /* Responsive Queries */
    @media (max-width: 1024px) {
      .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .kpi-item:nth-child(2) {
        border-right: none;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .news-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .section-wrap {
        padding: 56px 0;
      }
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 32px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
      .grid-3 {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: 1fr;
      }
      .compare-row {
        grid-template-columns: 1fr;
        gap: 8px;
      }
      .compare-header {
        display: none;
      }
      .timeline::after {
        left: 20px;
      }
      .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
        text-align: left;
      }
      .timeline-left {
        left: 0;
      }
      .timeline-right {
        left: 0;
      }
      .timeline-item::after {
        left: 13px;
      }
      .faq-grid {
        grid-template-columns: 1fr;
      }
      .form-grid-inner {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }