/* roulang page: index */
:root {
      --primary-dark: #0B0F17;
      --surface-dark: #111622;
      --surface-card: #182030;
      --accent-green: #00E599;
      --accent-orange: #FF9F1C;
      --text-main: #FFFFFF;
      --text-muted: #94A3B8;
      --text-dark: #0F172A;
      --bg-light: #F4F6F9;
      --bg-white: #FFFFFF;
      --border-dark: rgba(255, 255, 255, 0.12);
      --border-light: rgba(15, 23, 42, 0.08);
      --font-mono: "DIN Alternate", "Chakra Petch", "Inter", monospace;
      --container-width: 1200px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, "PingFang SC", "Noto Sans SC", "Helvetica Neue", sans-serif;
      background-color: var(--primary-dark);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部元信息栏 */
    .top-meta-bar {
      background-color: #070A0F;
      border-bottom: 1px solid var(--border-dark);
      height: 34px;
      font-size: 12px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
    }
    .top-meta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .pulse-dot {
      width: 6px;
      height: 6px;
      background-color: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-green);
    }

    /* 主导航栏 */
    .main-nav-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 15, 23, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-dark);
    }
    .main-nav {
      height: 72px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: #FFF;
    }
    .logo-box span.tag {
      background: rgba(0, 229, 153, 0.15);
      color: var(--accent-green);
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 2px;
      font-weight: 600;
      border: 1px solid rgba(0, 229, 153, 0.3);
    }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 28px;
    }
    .nav-links a {
      font-size: 14px;
      color: #CBD5E1;
      font-weight: 500;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--accent-green);
    }
    .btn-nav-demo {
      background: var(--accent-green);
      color: #070A0F;
      padding: 10px 20px;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-nav-demo:hover {
      background: #00ca86;
      box-shadow: 0 0 16px rgba(0, 229, 153, 0.3);
    }

    /* 移动端菜单按钮 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-dark);
      color: #FFF;
      font-size: 20px;
      padding: 6px 12px;
      border-radius: 4px;
      cursor: pointer;
    }

    /* 板块基类 */
    section {
      padding: 80px 0;
      position: relative;
    }
    .sec-light {
      background-color: var(--bg-light);
      color: var(--text-dark);
    }
    .sec-white {
      background-color: var(--bg-white);
      color: var(--text-dark);
    }
    .sec-dark {
      background-color: var(--surface-dark);
      color: var(--text-main);
    }
    .sec-black {
      background-color: var(--primary-dark);
      color: var(--text-main);
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-header.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      font-weight: 700;
      color: var(--accent-green);
      margin-bottom: 8px;
      display: inline-block;
    }
    .sec-light .section-tag, .sec-white .section-tag {
      color: #059669;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .sec-light .section-desc, .sec-white .section-desc {
      color: #64748B;
    }

    /* 板块 1: Hero */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, rgba(11, 15, 23, 0.75) 0%, rgba(11, 15, 23, 0.95) 100%), url('/assets/images/0a26560eae3e0999.webp') center/cover no-repeat;
      padding: 90px 0 100px;
      border-bottom: 1px solid var(--border-dark);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 24px;
      letter-spacing: -0.02em;
    }
    .hero-h1 span.hl {
      color: var(--accent-green);
    }
    .hero-intro {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .hero-btn-row {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
    }
    .btn-primary {
      background: var(--accent-green);
      color: #070A0F;
      font-size: 15px;
      font-weight: 700;
      padding: 14px 30px;
      border-radius: 4px;
      border: 1px solid var(--accent-green);
    }
    .btn-primary:hover {
      background: #00ca86;
      box-shadow: 0 0 20px rgba(0, 229, 153, 0.4);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      color: #FFF;
      font-size: 15px;
      font-weight: 600;
      padding: 14px 28px;
      border-radius: 4px;
      border: 1px solid var(--border-dark);
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.3);
    }
    .hero-specs-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-dark);
      padding-top: 24px;
    }
    .hero-spec-item strong {
      display: block;
      font-family: var(--font-mono);
      font-size: 20px;
      color: var(--accent-green);
    }
    .hero-spec-item span {
      font-size: 13px;
      color: var(--text-muted);
    }
    .hero-board {
      background: rgba(17, 22, 34, 0.85);
      border: 1px solid rgba(0, 229, 153, 0.25);
      border-radius: 8px;
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .board-header {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-dark);
      padding-bottom: 12px;
      margin-bottom: 16px;
      font-size: 13px;
      color: var(--accent-green);
      font-family: var(--font-mono);
    }
    .board-radar-mock {
      position: relative;
      background: #080C13;
      border: 1px solid var(--border-dark);
      border-radius: 6px;
      padding: 20px;
      height: 220px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      margin-bottom: 16px;
      overflow: hidden;
    }
    .radar-circle {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 180px;
      height: 180px;
      border: 1px dashed rgba(0, 229, 153, 0.2);
      border-radius: 50%;
    }
    .target-track {
      position: absolute;
      top: 35%;
      left: 65%;
      font-size: 11px;
      font-family: var(--font-mono);
      color: var(--accent-orange);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .target-ping {
      width: 8px;
      height: 8px;
      background: var(--accent-orange);
      border-radius: 50%;
      animation: ping 1.5s infinite;
    }
    @keyframes ping {
      0% { transform: scale(1); opacity: 1; }
      100% { transform: scale(2.4); opacity: 0; }
    }
    .board-log {
      font-family: var(--font-mono);
      font-size: 12px;
      color: #94A3B8;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .board-log div {
      display: flex;
      justify-content: space-between;
      padding: 4px 0;
      border-bottom: 1px dashed rgba(255,255,255,0.05);
    }

    /* 板块 2: 空域痛点 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: 6px;
      padding: 32px 24px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.03);
    }
    .pain-num {
      font-family: var(--font-mono);
      font-size: 28px;
      color: #DC2626;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .pain-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #0F172A;
    }
    .pain-text {
      font-size: 14px;
      color: #64748B;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .pain-solution {
      background: #F1F5F9;
      border-left: 3px solid #059669;
      padding: 12px;
      font-size: 13px;
      color: #0F172A;
      font-weight: 500;
    }

    /* 板块 3: 架构说明 */
    .about-flex {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .about-thumb {
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--border-dark);
      box-shadow: 0 16px 32px rgba(0,0,0,0.4);
    }
    .about-points {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .about-points li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 14px;
      color: #CBD5E1;
    }
    .about-points li strong {
      color: #FFF;
      display: block;
      margin-bottom: 2px;
    }
    .bullet-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-green);
      margin-top: 7px;
      flex-shrink: 0;
      border-radius: 1px;
    }

    /* 板块 4: 六大优势 */
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--surface-card);
      border: 1px solid var(--border-dark);
      padding: 32px 24px;
      border-radius: 6px;
      transition: var(--transition);
    }
    .adv-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 229, 153, 0.4);
    }
    .adv-icon {
      width: 44px;
      height: 44px;
      background: rgba(0, 229, 153, 0.1);
      border: 1px solid rgba(0, 229, 153, 0.3);
      color: var(--accent-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      font-weight: 700;
      border-radius: 4px;
      margin-bottom: 20px;
    }
    .adv-h3 {
      font-size: 18px;
      margin-bottom: 12px;
      font-weight: 700;
      color: #FFF;
    }
    .adv-p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 5: 终端产品簇 */
    .prod-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .prod-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: 6px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .prod-img {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .prod-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .prod-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .prod-title {
      font-size: 18px;
      font-weight: 700;
      color: #0F172A;
      margin-bottom: 8px;
    }
    .prod-spec-list {
      list-style: none;
      margin: 16px 0;
      padding-top: 16px;
      border-top: 1px solid #E2E8F0;
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 13px;
      color: #475569;
    }
    .prod-spec-list li {
      display: flex;
      justify-content: space-between;
    }
    .prod-btn {
      margin-top: auto;
      text-align: center;
      padding: 10px;
      background: #0F172A;
      color: #FFF;
      font-size: 13px;
      font-weight: 600;
      border-radius: 4px;
    }
    .prod-btn:hover {
      background: #1E293B;
    }

    /* 板块 6: 处置流程 */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .flow-card {
      background: #0D131D;
      border: 1px solid var(--border-dark);
      padding: 24px;
      border-radius: 6px;
      position: relative;
    }
    .flow-step {
      font-family: var(--font-mono);
      font-size: 13px;
      color: var(--accent-green);
      margin-bottom: 8px;
      display: block;
    }
    .flow-card h3 {
      font-size: 17px;
      margin-bottom: 10px;
      color: #FFF;
    }
    .flow-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 7: 行业实战故事 */
    .story-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: 6px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .story-img {
      height: 220px;
      overflow: hidden;
    }
    .story-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-content {
      padding: 28px;
    }
    .story-badge {
      display: inline-block;
      font-size: 12px;
      background: #E2E8F0;
      color: #0F172A;
      padding: 2px 8px;
      border-radius: 3px;
      margin-bottom: 12px;
      font-weight: 600;
    }
    .story-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #0F172A;
    }
    .story-text {
      font-size: 14px;
      color: #64748B;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .story-result {
      background: #F8FAFC;
      border-radius: 4px;
      padding: 12px 16px;
      font-size: 13px;
      color: #0F172A;
      font-weight: 500;
      border-left: 3px solid #059669;
    }

    /* 板块 8: 核心指标条 */
    .metrics-bar {
      background: #080C13;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-num {
      font-family: var(--font-mono);
      font-size: 44px;
      font-weight: 800;
      color: var(--accent-green);
      line-height: 1;
      margin-bottom: 8px;
    }
    .metric-label {
      font-size: 15px;
      color: #FFF;
      font-weight: 600;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 9: 客户证言评价 */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: var(--surface-card);
      border: 1px solid var(--border-dark);
      padding: 28px;
      border-radius: 6px;
    }
    .testi-stars {
      color: var(--accent-orange);
      font-size: 14px;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }
    .testi-quote {
      font-size: 14px;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .testi-author {
      display: flex;
      flex-direction: column;
      border-top: 1px solid var(--border-dark);
      padding-top: 12px;
      font-size: 13px;
    }
    .testi-author strong {
      color: #FFF;
    }
    .testi-author span {
      color: var(--text-muted);
      font-size: 12px;
    }

    /* 板块 10: 行业矩阵 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .solution-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: 6px;
      padding: 24px;
      transition: var(--transition);
    }
    .solution-card:hover {
      box-shadow: 0 10px 25px rgba(0,0,0,0.06);
    }
    .solution-tag {
      font-size: 12px;
      font-weight: 700;
      color: #059669;
      margin-bottom: 8px;
      display: block;
    }
    .solution-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      color: #0F172A;
    }
    .solution-desc {
      font-size: 13px;
      color: #64748B;
      line-height: 1.6;
    }

    /* 板块 11: 动态摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--surface-card);
      border: 1px solid var(--border-dark);
      border-radius: 6px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-card img {
      height: 160px;
      width: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      font-family: var(--font-mono);
      color: var(--accent-green);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 16px;
      color: #FFF;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .news-link {
      margin-top: auto;
      font-size: 13px;
      color: var(--accent-green);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 12: 技术问答 FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: 6px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: #0F172A;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-toggle-icon {
      font-size: 18px;
      color: #64748B;
      transition: var(--transition);
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: #475569;
      line-height: 1.7;
      display: block;
    }

    /* 板块 13: 申请演示与转化表单 */
    .contact-wrapper {
      background: linear-gradient(135deg, #0B0F17 0%, #151D2C 100%);
      border: 1px solid var(--border-dark);
      border-radius: 8px;
      padding: 48px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
    }
    .contact-info h3 {
      font-size: 28px;
      margin-bottom: 16px;
      color: #FFF;
      font-weight: 700;
    }
    .contact-info p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .contact-spec-box {
      border: 1px dashed var(--border-dark);
      padding: 16px;
      border-radius: 4px;
      background: rgba(0,0,0,0.2);
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .form-box {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      color: #CBD5E1;
      font-weight: 500;
    }
    .form-input {
      background: #0B0F17;
      border: 1px solid var(--border-dark);
      padding: 12px 16px;
      border-radius: 4px;
      color: #FFF;
      font-size: 14px;
      outline: none;
    }
    .form-input:focus {
      border-color: var(--accent-green);
    }
    .btn-submit {
      background: var(--accent-green);
      color: #070A0F;
      padding: 14px;
      border-radius: 4px;
      border: none;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      margin-top: 8px;
      transition: var(--transition);
    }
    .btn-submit:hover {
      background: #00ca86;
      box-shadow: 0 0 16px rgba(0, 229, 153, 0.4);
    }

    /* 页脚系统 */
    footer {
      background: #06090E;
      border-top: 1px solid var(--border-dark);
      padding: 70px 0 30px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      font-size: 14px;
      color: #FFF;
      margin-bottom: 20px;
      font-weight: 700;
      letter-spacing: 0.05em;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent-green);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .about-flex { grid-template-columns: 1fr; }
      .adv-grid { grid-template-columns: repeat(2, 1fr); }
      .prod-grid { grid-template-columns: repeat(2, 1fr); }
      .solution-grid { grid-template-columns: repeat(2, 1fr); }
      .flow-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .contact-wrapper { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .top-meta-bar { display: none; }
      .nav-links, .btn-nav-demo { display: none; }
      .mobile-menu-toggle { display: block; }
      .hero-h1 { font-size: 30px; }
      .pain-grid { grid-template-columns: 1fr; }
      .adv-grid { grid-template-columns: 1fr; }
      .prod-grid { grid-template-columns: 1fr; }
      .story-grid { grid-template-columns: 1fr; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
      .testi-grid { grid-template-columns: 1fr; }
      .solution-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .flow-grid { grid-template-columns: 1fr; }
      .hero-specs-row { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
      .contact-wrapper { padding: 24px; }
    }