/* roulang page: index */
:root {
      --primary: #00F5A0;
      --primary-cyan: #00D9F5;
      --navy: #1A365D;
      --accent: #FF5722;
      --bg-dark: #0A0F1D;
      --bg-card: rgba(255, 255, 255, 0.04);
      --bg-card-hover: rgba(255, 255, 255, 0.07);
      --border-card: rgba(0, 245, 160, 0.15);
      --text-main: #FFFFFF;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-card: 24px;
      --radius-pill: 9999px;
      --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
      --shadow-glow: 0 0 25px rgba(0, 245, 160, 0.25);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部通知条 */
    .top-strip {
      background: rgba(10, 15, 29, 0.95);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .top-strip-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.6; transform: scale(0.9); }
      50% { opacity: 1; transform: scale(1.15); }
      100% { opacity: 0.6; transform: scale(0.9); }
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(0, 245, 160, 0.12);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: #fff;
    }
    .logo-badge {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary), var(--primary-cyan));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--bg-dark);
      font-weight: 900;
      font-size: 18px;
      box-shadow: 0 4px 15px rgba(0, 245, 160, 0.3);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }
    .nav-link {
      font-size: 15px;
      color: var(--text-muted);
      transition: color 0.2s ease;
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    /* 按钮组件 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: var(--radius-pill);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-cyan));
      color: #06111C;
      box-shadow: 0 4px 20px rgba(0, 245, 160, 0.25);
    }
    .btn-primary:hover {
      box-shadow: 0 6px 25px rgba(0, 245, 160, 0.45);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      border-color: rgba(255, 255, 255, 0.2);
      color: #fff;
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 数据徽章 */
    .data-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: var(--radius-pill);
      background: rgba(0, 245, 160, 0.08);
      border: 1px solid rgba(0, 245, 160, 0.25);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .data-pill-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 6px var(--primary);
    }

    /* 通用板块与排版 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background: rgba(255, 255, 255, 0.015);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 14px;
      color: #ffffff;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 760px;
      line-height: 1.7;
    }

    /* Hero：杂志分栏式 */
    .hero-section {
      padding: 60px 0 90px;
      position: relative;
      background-image: radial-gradient(circle at 80% 20%, rgba(0, 217, 245, 0.12), transparent 45%), radial-gradient(circle at 10% 80%, rgba(0, 245, 160, 0.08), transparent 40%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-title {
      font-size: 46px;
      line-height: 1.22;
      font-weight: 800;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .gradient-text {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-text {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 35px;
    }
    .hero-ctas {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }
    .hero-metrics-strip {
      display: flex;
      gap: 30px;
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .metric-item-num {
      font-size: 26px;
      font-weight: 700;
      color: #fff;
    }
    .metric-item-num span {
      color: var(--primary);
      font-size: 16px;
      margin-left: 2px;
    }
    .metric-item-lbl {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 首屏右侧精选卡 */
    .hero-card-portal {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-card);
      padding: 30px;
      box-shadow: var(--shadow-card);
      position: relative;
      overflow: hidden;
    }
    .portal-badge {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
    }
    .hero-stream-box {
      background: rgba(10, 15, 29, 0.7);
      border-radius: var(--radius-md);
      padding: 18px;
      border: 1px solid rgba(255, 255, 255, 0.05);
      margin-bottom: 20px;
    }
    .stream-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }
    .stream-row:last-child {
      margin-bottom: 0;
    }
    .stream-name {
      font-size: 14px;
      color: var(--text-muted);
    }
    .stream-val {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary-cyan);
    }
    .wave-bar-wrapper {
      display: flex;
      align-items: flex-end;
      gap: 5px;
      height: 45px;
      margin-top: 15px;
      padding-top: 10px;
      border-top: 1px dashed rgba(255, 255, 255, 0.1);
    }
    .wave-bar {
      flex: 1;
      background: rgba(0, 245, 160, 0.2);
      border-radius: 3px;
      transition: height 0.3s;
    }
    .wave-bar.hi {
      background: var(--primary);
    }

    /* 卖点三连 */
    .trio-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .trio-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-card);
      padding: 36px 30px;
      transition: all 0.3s ease;
      position: relative;
    }
    .trio-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-card);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
    }
    .trio-card-num {
      font-size: 38px;
      font-weight: 900;
      color: rgba(255, 255, 255, 0.08);
      position: absolute;
      top: 25px;
      right: 30px;
    }
    .trio-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 14px;
      color: #fff;
    }
    .trio-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 入口矩阵板块 */
    .portal-matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .matrix-item {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: var(--radius-card);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 200px;
      transition: all 0.25s ease;
    }
    .matrix-item:hover {
      border-color: var(--border-card);
      background: var(--bg-card-hover);
      transform: translateY(-3px);
    }
    .matrix-tag {
      font-size: 12px;
      color: var(--primary-cyan);
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .matrix-item h3 {
      font-size: 18px;
      font-weight: 600;
      margin: 12px 0 8px;
      color: #fff;
    }
    .matrix-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .matrix-arrow {
      align-self: flex-end;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.05);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 15px;
      transition: all 0.2s;
    }
    .matrix-item:hover .matrix-arrow {
      background: var(--primary);
      color: #06111C;
    }

    /* 最新发布与科研动态 */
    .news-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .news-card-featured {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-card);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img-box {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background: #111a2e;
    }
    .news-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card-featured:hover .news-img-box img {
      transform: scale(1.04);
    }
    .news-content {
      padding: 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: var(--text-dim);
      margin-bottom: 12px;
    }
    .news-title {
      font-size: 20px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 12px;
      color: #fff;
    }
    .news-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .news-list-item {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: all 0.25s;
    }
    .news-list-item:hover {
      border-color: var(--border-card);
      background: var(--bg-card-hover);
    }
    .news-list-item h4 {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 6px;
    }
    .news-list-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 热门专题分析板块 */
    .topics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .topic-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-card);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .topic-img-wrap {
      height: 180px;
      overflow: hidden;
    }
    .topic-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .topic-body {
      padding: 24px;
      flex: 1;
    }
    .topic-body h3 {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .topic-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 核心数据指标大横幅 */
    .stats-banner {
      background: linear-gradient(135deg, rgba(26, 54, 93, 0.6) 0%, rgba(10, 15, 29, 0.95) 100%);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-card);
      padding: 45px 35px;
    }
    .stats-flex {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .stat-box h3 {
      font-size: 44px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .stat-box p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 资讯与行业标准列表 */
    .articles-table {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .article-row {
      display: grid;
      grid-template-columns: 140px 1.5fr 1fr 100px;
      align-items: center;
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: var(--radius-md);
      padding: 16px 24px;
      transition: background 0.2s;
    }
    .article-row:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-card);
    }
    .art-cat {
      font-size: 13px;
      color: var(--primary-cyan);
      font-weight: 600;
    }
    .art-title {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
    }
    .art-summary {
      font-size: 13px;
      color: var(--text-muted);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      padding-right: 20px;
    }
    .art-action {
      text-align: right;
      font-size: 13px;
      color: var(--primary);
    }

    /* 口碑评测与实测背书 */
    .feedback-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .feedback-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-card);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feedback-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }
    .user-profile {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .user-avatar-tag {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--navy), #2A4365);
      border: 1px solid var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 14px;
    }
    .user-meta-name {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
    }
    .user-meta-role {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 平台保障体系 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .security-box {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: var(--radius-card);
      padding: 26px 22px;
      text-align: center;
    }
    .security-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(0, 245, 160, 0.1);
      color: var(--primary);
      margin: 0 auto 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: bold;
    }
    .security-box h4 {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
    }
    .security-box p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 常见问题快速解答 FAQ */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      font-weight: 600;
      color: #fff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-icon-cross {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      padding-top: 14px;
    }

    /* 落地转化表单（收口行动区） */
    .cta-card-wrapper {
      background: linear-gradient(135deg, rgba(26, 54, 93, 0.7) 0%, rgba(10, 15, 29, 0.98) 100%);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-card);
      padding: 50px 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
      box-shadow: var(--shadow-card);
    }
    .form-group-wrap {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-control-input {
      width: 100%;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control-input:focus {
      border-color: var(--primary);
      background: rgba(255, 255, 255, 0.09);
    }
    .form-control-input::placeholder {
      color: var(--text-dim);
    }

    /* 页脚 */
    .site-footer {
      background: #060913;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 70px 0 30px;
      color: var(--text-muted);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand-title {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-brand-text {
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .footer-col-title {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-nav-list a {
      color: var(--text-dim);
      transition: color 0.2s;
    }
    .footer-nav-list a:hover {
      color: var(--primary);
    }
    .footer-bottom-bar {
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .trio-grid, .topics-grid, .feedback-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .portal-matrix-grid, .security-grid, .stats-flex {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .article-row {
        grid-template-columns: 100px 1.5fr 1fr;
      }
      .art-action {
        display: none;
      }
      .cta-card-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
      }
    }
    @media (max-width: 768px) {
      .top-strip {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .hero-title {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .trio-grid, .portal-matrix-grid, .news-grid, .topics-grid, .feedback-grid, .security-grid, .stats-flex {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .article-row {
        grid-template-columns: 1fr;
        gap: 6px;
      }
      .art-summary {
        white-space: normal;
      }
      .cta-card-wrapper {
        padding: 30px 20px;
      }
    }