/* roulang page: index */
:root {
      --bg-dark: #0F1115;
      --bg-card: #161920;
      --bg-deep: #08090B;
      --gold-primary: #C5A880;
      --gold-light: #DFC7A7;
      --gold-border: rgba(197, 168, 128, 0.2);
      --gold-border-hover: rgba(197, 168, 128, 0.5);
      --accent-teal: #2D7D6F;
      --text-main: #FFFFFF;
      --text-muted: #94A3B8;
      --text-light: #CBD5E1;
      --radius-sm: 4px;
      --radius-md: 8px;
      --transition: all 0.3s ease;
      --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: system-ui, -apple-system, 'PingFang SC', 'Noto Sans SC', sans-serif;
      font-size: 16px;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      padding-bottom: 70px;
    }

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部复合导航 */
    .top-bar {
      background: #090A0D;
      font-size: 13px;
      color: var(--text-muted);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 8px 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-badges span {
      margin-left: 16px;
      color: var(--gold-light);
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(15, 17, 21, 0.9);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--gold-border);
      transition: var(--transition);
    }
    .main-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand-logo-mark {
      width: 28px;
      height: 28px;
      background: var(--gold-primary);
      color: var(--bg-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      border-radius: var(--radius-sm);
      font-size: 15px;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 28px;
    }
    .nav-menu a {
      font-size: 14px;
      color: var(--text-light);
      font-weight: 500;
    }
    .nav-menu a:hover, .nav-menu a.active {
      color: var(--gold-primary);
    }
    .btn-header {
      background: var(--gold-primary);
      color: #000;
      padding: 8px 20px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      border: 1px solid var(--gold-primary);
    }
    .btn-header:hover {
      background: var(--gold-light);
    }

    /* 按钮通用 */
    .btn-primary {
      display: inline-block;
      background: var(--gold-primary);
      color: #000;
      padding: 14px 32px;
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold-primary);
      cursor: pointer;
      text-align: center;
    }
    .btn-primary:hover {
      background: var(--gold-light);
      box-shadow: 0 0 15px rgba(197, 168, 128, 0.4);
    }
    .btn-outline {
      display: inline-block;
      background: transparent;
      color: var(--text-main);
      padding: 14px 32px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold-border);
      cursor: pointer;
      text-align: center;
      margin-left: 12px;
    }
    .btn-outline:hover {
      border-color: var(--gold-primary);
      color: var(--gold-primary);
    }

    /* 板块排版通用 */
    section {
      padding: 96px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-card);
    }
    .section-deep {
      background-color: var(--bg-deep);
    }
    .section-header {
      margin-bottom: 56px;
    }
    .section-tag {
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 0.15em;
      color: var(--gold-primary);
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 820px;
    }

    /* 板块 1: Hero */
    .hero-section {
      padding: 120px 0 100px;
      background: linear-gradient(180deg, rgba(15,17,21,0.7) 0%, rgba(15,17,21,1) 100%),
                  url('/assets/images/258c109e9eb6ae6b.webp') center/cover no-repeat;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      background: rgba(197, 168, 128, 0.1);
      border: 1px solid var(--gold-border);
      padding: 6px 14px;
      border-radius: 20px;
      margin-bottom: 24px;
    }
    .hero-badge-wrap span {
      font-size: 13px;
      color: var(--gold-light);
      font-weight: 600;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 46px;
      line-height: 1.25;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 24px;
      color: #fff;
    }
    .hero-content h1 span {
      color: var(--gold-primary);
    }
    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.8;
    }
    .hero-cta-group {
      display: flex;
      margin-bottom: 48px;
    }
    .trust-badges-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
    }
    .trust-badge-item {
      font-size: 12px;
      color: var(--text-light);
      line-height: 1.4;
    }
    .trust-badge-item strong {
      display: block;
      color: var(--gold-light);
      margin-bottom: 4px;
    }
    .hero-preview-card {
      background: rgba(22, 25, 32, 0.85);
      border: 1px solid var(--gold-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }
    .preview-card-header {
      background: #111317;
      padding: 12px 18px;
      font-size: 12px;
      color: var(--text-muted);
      border-bottom: 1px solid rgba(255,255,255,0.05);
      display: flex;
      justify-content: space-between;
    }

    /* 板块 2: 底座与可验证指标 */
    .specs-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .spec-item-box {
      background: #111317;
      border: 1px solid var(--gold-border);
      border-radius: var(--radius-sm);
      padding: 24px;
      margin-bottom: 20px;
    }
    .spec-item-box h4 {
      font-size: 18px;
      color: var(--gold-light);
      margin-bottom: 8px;
    }
    .spec-item-box p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块 3: 核心优势矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: #121419;
      border: 1px solid var(--gold-border);
      border-radius: var(--radius-sm);
      padding: 32px 24px;
      transition: var(--transition);
    }
    .matrix-card:hover {
      border-color: var(--gold-border-hover);
      transform: translateY(-4px);
    }
    .matrix-card-num {
      font-size: 20px;
      font-weight: 700;
      color: var(--gold-primary);
      margin-bottom: 16px;
    }
    .matrix-card h3 {
      font-size: 19px;
      margin-bottom: 12px;
      color: #fff;
    }
    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 4: 热门产品套件 */
    .suite-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .suite-card {
      background: #101217;
      border: 1px solid var(--gold-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .suite-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    .suite-card-body {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .suite-card-body h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }
    .suite-card-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .suite-checklist {
      list-style: none;
      margin-bottom: 24px;
    }
    .suite-checklist li {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 8px;
      position: relative;
      padding-left: 18px;
    }
    .suite-checklist li::before {
      content: "•";
      position: absolute;
      left: 0;
      color: var(--gold-primary);
    }
    .suite-action {
      font-size: 14px;
      font-weight: 600;
      color: var(--gold-primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块 5: 对比差异 */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      margin-top: 32px;
    }
    .compare-column {
      background: #101216;
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 36px;
    }
    .compare-column.highlight {
      background: #141820;
      border-color: var(--gold-border);
      box-shadow: 0 0 25px rgba(197, 168, 128, 0.08);
    }
    .compare-tag {
      display: inline-block;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .compare-tag.muted {
      background: rgba(255,255,255,0.06);
      color: var(--text-muted);
    }
    .compare-tag.active {
      background: rgba(197, 168, 128, 0.2);
      color: var(--gold-primary);
    }
    .compare-list {
      list-style: none;
      margin-top: 24px;
    }
    .compare-list li {
      padding: 14px 0;
      border-bottom: 1px solid rgba(255,255,255,0.04);
      font-size: 14px;
      color: var(--text-light);
    }
    .compare-list li strong {
      display: block;
      font-size: 15px;
      margin-bottom: 4px;
      color: #fff;
    }

    /* 板块 6: 落地全流程演示 */
    .timeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline-card {
      background: #161920;
      border: 1px solid var(--gold-border);
      padding: 28px 20px;
      border-radius: var(--radius-sm);
    }
    .timeline-step {
      font-size: 12px;
      color: var(--gold-primary);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .timeline-card h4 {
      font-size: 18px;
      margin-bottom: 12px;
      color: #fff;
    }
    .timeline-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 7: 关键业务数据统计 */
    .stats-bar-wrapper {
      background: #111419;
      border-top: 1px solid var(--gold-border);
      border-bottom: 1px solid var(--gold-border);
      padding: 60px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .stat-number {
      font-size: 44px;
      font-weight: 800;
      color: var(--gold-primary);
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }
    .stat-label {
      font-size: 15px;
      color: #fff;
      font-weight: 600;
      margin-bottom: 4px;
    }
    .stat-subtext {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 8: 行业案例纪实 */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .case-card {
      background: #14171E;
      border: 1px solid var(--gold-border);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .case-card img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }
    .case-content {
      padding: 32px;
    }
    .case-meta {
      display: flex;
      gap: 12px;
      font-size: 12px;
      color: var(--gold-light);
      margin-bottom: 12px;
    }
    .case-content h3 {
      font-size: 22px;
      margin-bottom: 14px;
    }
    .case-content p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
    }
    .case-result-box {
      background: #0E1015;
      padding: 16px;
      border-left: 3px solid var(--gold-primary);
      font-size: 13px;
      color: var(--text-light);
    }

    /* 板块 9: 决策者评价 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #13161C;
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: var(--radius-sm);
      padding: 30px;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .reviewer-info h5 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 2px;
    }
    .reviewer-info span {
      font-size: 12px;
      color: var(--gold-light);
    }

    /* 板块 10: 行业资讯与技术指南 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: #11141A;
      border: 1px solid var(--gold-border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .insight-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .insight-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .insight-card-body h4 {
      font-size: 17px;
      margin-bottom: 12px;
      color: #fff;
      line-height: 1.4;
    }
    .insight-card-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 20px;
    }

    /* 板块 11: 常见问题解答 FAQ */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #12151B;
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-item.active {
      border-color: var(--gold-border);
    }
    .faq-question {
      padding: 22px 28px;
      font-size: 17px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #fff;
    }
    .faq-answer {
      padding: 0 28px 24px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 12: 实施保障与表单收口 */
    .final-cta-card {
      background: linear-gradient(145deg, #161A22 0%, #0F1116 100%);
      border: 1px solid var(--gold-border);
      border-radius: var(--radius-md);
      padding: 56px 48px;
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .guarantee-list {
      list-style: none;
      margin-top: 32px;
    }
    .guarantee-item {
      margin-bottom: 24px;
    }
    .guarantee-item h4 {
      font-size: 17px;
      color: var(--gold-light);
      margin-bottom: 6px;
    }
    .guarantee-item p {
      font-size: 14px;
      color: var(--text-muted);
    }
    .inquiry-form {
      background: #101217;
      padding: 36px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255,255,255,0.08);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .form-group input, .form-group select {
      width: 100%;
      background: #181C24;
      border: 1px solid rgba(255,255,255,0.1);
      padding: 12px 16px;
      color: #fff;
      border-radius: var(--radius-sm);
      outline: none;
      font-size: 14px;
    }
    .form-group input:focus, .form-group select:focus {
      border-color: var(--gold-primary);
    }

    /* 底部固定转化条 */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(15, 17, 21, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid var(--gold-border);
      padding: 14px 0;
      z-index: 998;
    }
    .sticky-bar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .sticky-status {
      font-size: 14px;
      color: var(--text-light);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .sticky-status::before {
      content: "";
      width: 8px;
      height: 8px;
      background: #10B981;
      border-radius: 50%;
      display: inline-block;
    }

    /* 页脚信誉信号 */
    .site-footer {
      background: #090A0D;
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 72px 0 32px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-column h4 {
      font-size: 15px;
      color: #fff;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--gold-primary);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.05);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .specs-grid, .cta-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .matrix-grid, .suite-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .compare-container, .cases-grid, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid, .suite-grid, .insights-grid, .timeline-grid {
        grid-template-columns: 1fr;
      }
      .trust-badges-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .sticky-status {
        display: none;
      }
      .sticky-bar .container {
        justify-content: center;
      }
      .hero-cta-group {
        flex-direction: column;
        gap: 12px;
      }
      .btn-outline {
        margin-left: 0;
      }
    }