/* roulang page: index */
:root {
      --bg-main: #0a0d14;
      --bg-card: #121722;
      --bg-card-alt: #161d2b;
      --border-color: #1e2638;
      --border-light: #2c3850;
      --primary: #00f59b;
      --primary-hover: #00d685;
      --secondary: #0066ff;
      --text-main: #ffffff;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --font-base: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
      --font-mono: "Inter", "JetBrains Mono", monospace;
      --container-width: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: var(--font-base);
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      font-size: 15px;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, textarea {
      font-family: inherit;
    }
    
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Top Bar */
    .top-bar {
      background-color: #07090e;
      border-bottom: 1px solid var(--border-color);
      font-size: 12px;
      color: var(--text-dim);
      padding: 6px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--primary);
      box-shadow: 0 0 8px var(--primary);
    }
    .top-bar-right {
      display: flex;
      gap: 16px;
    }

    /* Header Nav */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 13, 20, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: 0.5px;
    }
    .logo-badge {
      background: linear-gradient(135deg, var(--secondary), var(--primary));
      width: 32px;
      height: 32px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #000;
      font-weight: 900;
      font-size: 14px;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      color: var(--text-muted);
      font-weight: 500;
      font-size: 14px;
    }
    .nav-link:hover {
      color: var(--primary);
    }
    .btn-cta {
      background: var(--primary);
      color: #05140c;
      font-weight: 600;
      padding: 9px 20px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      border: none;
      cursor: pointer;
      transition: all 0.25s ease;
      box-shadow: 0 0 16px rgba(0, 245, 155, 0.25);
    }
    .btn-cta:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 0 22px rgba(0, 245, 155, 0.45);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-weight: 600;
      padding: 9px 20px;
      border-radius: 6px;
      font-size: 14px;
      cursor: pointer;
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(0, 245, 155, 0.06);
    }

    /* Section Styles */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-alt {
      background-color: #0e121b;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-darker {
      background-color: #06080d;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-tag {
      font-size: 12px;
      font-family: var(--font-mono);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--primary);
      margin-bottom: 8px;
      display: inline-block;
      background: rgba(0, 245, 155, 0.08);
      padding: 3px 8px;
      border-radius: 4px;
      border: 1px solid rgba(0, 245, 155, 0.2);
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-desc {
      color: var(--text-muted);
      max-width: 680px;
      line-height: 1.7;
    }

    /* Hero Section */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% 20%, rgba(0, 102, 255, 0.12) 0%, transparent 60%),
                  url('/assets/images/ed710ee1a0788a97.png') center center/cover no-repeat;
      position: relative;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(10, 13, 20, 0.85) 0%, rgba(10, 13, 20, 0.96) 100%);
    }
    .hero-container {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: #fff;
      margin-bottom: 20px;
    }
    .hero-highlight {
      color: var(--primary);
      position: relative;
    }
    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
      flex-wrap: wrap;
    }
    .hero-terminal {
      background: #090c13;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
      font-family: var(--font-mono);
      position: relative;
    }
    .terminal-header {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .t-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .t-red { background: #ff5f56; }
    .t-yellow { background: #ffbd2e; }
    .t-green { background: #27c93f; }
    .terminal-title {
      font-size: 12px;
      color: var(--text-dim);
      margin-left: 6px;
    }
    .terminal-code {
      font-size: 13px;
      color: #7dd3fc;
      line-height: 1.6;
      word-break: break-all;
    }
    .code-key { color: #f472b6; }
    .code-str { color: #a7f3d0; }
    .code-num { color: #fbbf24; }

    /* KPI Metrics Board */
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -35px;
      position: relative;
      z-index: 2;
    }
    .kpi-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 24px 20px;
      text-align: center;
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
      transition: transform 0.2s;
    }
    .kpi-card:hover {
      transform: translateY(-3px);
      border-color: var(--border-light);
    }
    .kpi-num {
      font-family: var(--font-mono);
      font-size: 34px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .kpi-label {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* Core Advantages Grid */
    .grid-3col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2col {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 30px 24px;
      transition: all 0.25s ease;
      position: relative;
      overflow: hidden;
    }
    .adv-card:hover {
      border-color: rgba(0, 245, 155, 0.4);
      background: var(--bg-card-alt);
    }
    .adv-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 3px;
      height: 100%;
      background: var(--secondary);
      opacity: 0;
      transition: opacity 0.25s;
    }
    .adv-card:hover::before {
      opacity: 1;
    }
    .adv-icon {
      font-size: 20px;
      font-family: var(--font-mono);
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 14px;
      display: inline-block;
    }
    .adv-title {
      font-size: 18px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 10px;
    }
    .adv-desc {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.65;
    }

    /* Product Matrix Cards */
    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform 0.25s ease;
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-light);
    }
    .matrix-media {
      height: 190px;
      overflow: hidden;
      position: relative;
    }
    .matrix-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .matrix-card:hover .matrix-media img {
      transform: scale(1.05);
    }
    .matrix-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .matrix-title {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .matrix-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .matrix-specs {
      margin-top: auto;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .spec-item {
      font-size: 12px;
    }
    .spec-label {
      color: var(--text-dim);
      margin-bottom: 2px;
    }
    .spec-val {
      color: var(--primary);
      font-family: var(--font-mono);
      font-weight: 600;
    }

    /* Dark Deep Cases */
    .case-banner {
      background: radial-gradient(circle at 80% 50%, rgba(0, 245, 155, 0.08) 0%, transparent 60%),
                  url('/assets/images/b809bb47a4626c7a.jpg') center center/cover no-repeat;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 48px;
      position: relative;
      overflow: hidden;
    }
    .case-banner-inner {
      max-width: 620px;
      position: relative;
      z-index: 2;
    }
    .case-list {
      list-style: none;
      margin: 20px 0 28px;
    }
    .case-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 12px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .case-bullet {
      color: var(--primary);
      font-weight: bold;
      line-height: 1.4;
    }

    /* User Stories */
    .story-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .story-quote {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .story-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #1e2638;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
      font-family: var(--font-mono);
      font-size: 14px;
    }
    .author-name {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
    }
    .author-role {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* Feature Comparison Table */
    .table-container {
      overflow-x: auto;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      background: var(--bg-card);
    }
    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comp-table th, .comp-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .comp-table th {
      background: rgba(255, 255, 255, 0.02);
      color: var(--text-main);
      font-weight: 600;
      font-size: 15px;
    }
    .comp-table td {
      font-size: 14px;
      color: var(--text-muted);
    }
    .col-highlight {
      background: rgba(0, 245, 155, 0.03);
      color: var(--primary) !important;
      font-weight: 600;
    }

    /* News and Reports Grid */
    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-media {
      height: 160px;
      overflow: hidden;
    }
    .news-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 8px;
      font-family: var(--font-mono);
    }
    .news-title {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* FAQ Accordion */
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-arrow {
      font-size: 14px;
      transition: transform 0.25s;
    }
    .faq-answer {
      padding: 0 24px 20px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    /* Security & SLA Badges */
    .sec-badge-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .sec-badge-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 20px;
      text-align: center;
    }
    .sec-badge-icon {
      font-family: var(--font-mono);
      font-size: 24px;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .sec-badge-title {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 6px;
    }
    .sec-badge-desc {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* Integration Section */
    .integ-box {
      background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 245, 155, 0.05) 100%);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

    /* Bottom Final CTA */
    .final-cta {
      background: radial-gradient(circle at 50% 50%, rgba(0, 245, 155, 0.12) 0%, rgba(10, 13, 20, 0.95) 70%),
                  url('/assets/images/20dcd06733e876c3.jpg') center center/cover no-repeat;
      padding: 80px 0;
      text-align: center;
      border-top: 1px solid var(--border-color);
    }
    .final-cta-content {
      max-width: 600px;
      margin: 0 auto;
    }

    /* Floating Sticky Bar */
    .floating-bar {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 999;
      background: rgba(18, 23, 34, 0.94);
      border: 1px solid rgba(0, 245, 155, 0.4);
      border-radius: 40px;
      padding: 10px 24px;
      display: flex;
      align-items: center;
      gap: 20px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(10px);
    }
    .floating-text {
      font-size: 14px;
      color: #fff;
    }
    .floating-text span {
      color: var(--primary);
      font-weight: 600;
    }

    /* Footer */
    footer {
      background-color: #06080d;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      font-size: 14px;
      color: var(--text-dim);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.6;
      margin-bottom: 16px;
      max-width: 320px;
    }
    .footer-col h5 {
      font-size: 15px;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .grid-3col { grid-template-columns: repeat(2, 1fr); }
      .kpi-grid { grid-template-columns: repeat(2, 1fr); margin-top: 0; }
      .sec-badge-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-menu { display: none; }
      .hero-container { grid-template-columns: 1fr; }
      .hero-content h1 { font-size: 30px; }
      .grid-3col, .grid-2col, .integ-box { grid-template-columns: 1fr; }
      .kpi-grid { grid-template-columns: 1fr; }
      .sec-badge-grid { grid-template-columns: 1fr; }
      .case-banner { padding: 24px; }
      .floating-bar { display: none; }
      .footer-grid { grid-template-columns: 1fr; gap: 24px; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }