/* roulang page: index */
:root {
      --bg-canvas: #0a0b10;
      --bg-surface: #12131a;
      --bg-card: #181a24;
      --bg-card-hover: #222533;
      --primary-color: #7928ca;
      --primary-gradient: linear-gradient(135deg, #7928ca 0%, #ff0080 100%);
      --accent-color: #00dfd8;
      --text-primary: #ffffff;
      --text-secondary: #9496a1;
      --border-color: rgba(255, 255, 255, 0.08);
      --border-focus: rgba(0, 223, 216, 0.4);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
      --shadow-glow: 0 0 25px rgba(121, 40, 202, 0.35);
      --container-max: 1280px;
    }

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

    body {
      background-color: var(--bg-canvas);
      color: var(--text-primary);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
      border: none;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .section-wrap {
      padding: 90px 0;
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }

    .section-surface {
      background-color: var(--bg-surface);
    }

    .section-header {
      margin-bottom: 50px;
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(121, 40, 202, 0.15);
      color: var(--accent-color);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 15px;
      border: 1px solid rgba(0, 223, 216, 0.25);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 18px;
    }

    .section-desc {
      color: var(--text-secondary);
      font-size: 1.05rem;
      line-height: 1.8;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #fff;
      box-shadow: 0 4px 20px rgba(121, 40, 202, 0.4);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 25px rgba(255, 0, 128, 0.5);
    }

    .btn-outline {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-outline:hover {
      border-color: var(--accent-color);
      color: var(--accent-color);
      background: rgba(0, 223, 216, 0.05);
    }

    /* Top Bar */
    .top-bar {
      background: #06070a;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.85rem;
      color: var(--text-secondary);
      padding: 8px 0;
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-bar-meta {
      display: flex;
      gap: 25px;
    }

    .top-bar-badge {
      color: var(--accent-color);
      font-weight: 500;
    }

    /* Main Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 11, 16, 0.85);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
    }

    .header-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.01em;
    }

    .logo-symbol {
      width: 38px;
      height: 38px;
      background: var(--primary-gradient);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 15px rgba(121, 40, 202, 0.5);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-link {
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.95rem;
      padding: 6px 0;
      position: relative;
    }

    .nav-link:hover, .nav-link.active {
      color: #fff;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-color);
      transition: width 0.3s;
    }

    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

    .nav-cta {
      display: flex;
      align-items: center;
    }

    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      color: #fff;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    /* Hero */
    .hero-section {
      position: relative;
      padding: 100px 0 80px;
      background: radial-gradient(circle at 75% 20%, rgba(121, 40, 202, 0.22) 0%, rgba(10, 11, 16, 0) 60%),
                  radial-gradient(circle at 20% 80%, rgba(0, 223, 216, 0.12) 0%, rgba(10, 11, 16, 0) 50%);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }

    .hero-h1 {
      font-size: 2.8rem;
      line-height: 1.22;
      font-weight: 800;
      margin-bottom: 22px;
      letter-spacing: -0.02em;
    }

    .hero-h1 span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      color: var(--text-secondary);
      font-size: 1.1rem;
      line-height: 1.85;
      margin-bottom: 35px;
    }

    .hero-actions {
      display: flex;
      gap: 18px;
      margin-bottom: 40px;
    }

    .hero-status-strip {
      display: flex;
      gap: 24px;
      padding-top: 25px;
      border-top: 1px solid var(--border-color);
    }

    .status-item {
      display: flex;
      flex-direction: column;
    }

    .status-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--accent-color);
    }

    .status-label {
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    /* Hero Comparison Board (版式蓝图硬性要求：对比选型表/推荐卡高亮) */
    .compare-board {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-card);
      position: relative;
    }

    .compare-badge {
      position: absolute;
      top: -14px;
      right: 28px;
      background: var(--primary-gradient);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 5px 12px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(121, 40, 202, 0.4);
    }

    .compare-header {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 16px;
      margin-bottom: 20px;
    }

    .compare-header h3 {
      font-size: 1.3rem;
      margin-bottom: 6px;
    }

    .compare-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 25px;
    }

    .compare-features li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.95rem;
      color: #d1d4dc;
    }

    .compare-features li svg {
      width: 18px;
      height: 18px;
      fill: var(--accent-color);
      flex-shrink: 0;
      margin-top: 3px;
    }

    /* Core Matrix (6张网格卡) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .matrix-card:hover {
      transform: translateY(-5px);
      border-color: rgba(121, 40, 202, 0.4);
      box-shadow: var(--shadow-glow);
      background: var(--bg-card-hover);
    }

    .matrix-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--primary-gradient);
      opacity: 0;
      transition: opacity 0.3s;
    }

    .matrix-card:hover::before {
      opacity: 1;
    }

    .matrix-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(121, 40, 202, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      border: 1px solid rgba(121, 40, 202, 0.3);
    }

    .matrix-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
      color: #fff;
    }

    .matrix-card p {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* Product Suite (3张大方案卡，中间高亮) */
    .suite-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      align-items: stretch;
    }

    .suite-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 38px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }

    .suite-card.highlight {
      border: 2px solid var(--primary-color);
      box-shadow: 0 0 30px rgba(121, 40, 202, 0.25);
      background: #191b29;
      transform: scale(1.03);
      z-index: 2;
    }

    .suite-tag {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-gradient);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
    }

    .suite-card h3 {
      font-size: 1.45rem;
      margin-bottom: 12px;
    }

    .suite-card-desc {
      color: var(--text-secondary);
      font-size: 0.95rem;
      margin-bottom: 24px;
      min-height: 52px;
    }

    .suite-checklist {
      list-style: none;
      margin-bottom: 35px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .suite-checklist li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.92rem;
      color: #ced2dc;
    }

    .suite-checklist li span.bullet {
      color: var(--accent-color);
      font-weight: bold;
    }

    /* Dark Vision 调度理念 */
    .dark-vision-box {
      background: #050608;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 50px 40px;
      box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.8);
    }

    .vision-layout {
      display: grid;
      grid-template-columns: 1fr 1.3fr 1fr;
      gap: 25px;
      align-items: center;
    }

    .vision-node-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: var(--radius-md);
    }

    .vision-node-card h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: var(--accent-color);
    }

    .vision-node-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
    }

    .vision-center-hub {
      text-align: center;
      padding: 30px;
      background: radial-gradient(circle, rgba(121, 40, 202, 0.25) 0%, rgba(10, 11, 16, 0.8) 70%);
      border: 1px dashed rgba(0, 223, 216, 0.4);
      border-radius: var(--radius-lg);
    }

    .hub-title {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }

    .hub-pulse {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: #00dfd8;
      margin-top: 15px;
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #00dfd8;
      box-shadow: 0 0 10px #00dfd8;
      animation: pulseAnim 2s infinite;
    }

    @keyframes pulseAnim {
      0% { opacity: 0.4; }
      50% { opacity: 1; transform: scale(1.2); }
      100% { opacity: 0.4; }
    }

    /* Workflow 步进板块 */
    .step-track {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 25px;
      position: relative;
    }

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      position: relative;
    }

    .step-number {
      font-size: 2.2rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 10px;
    }

    .step-card h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }

    .step-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* 时段卡版式（蓝图硬性执行） */
    .schedule-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .schedule-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .schedule-card img {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }

    .schedule-body {
      padding: 24px;
      flex-grow: 1;
    }

    .schedule-meta {
      display: inline-block;
      font-size: 0.8rem;
      color: var(--accent-color);
      font-weight: 600;
      margin-bottom: 8px;
    }

    .schedule-body h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }

    .schedule-body p {
      font-size: 0.9rem;
      color: var(--text-secondary);
    }

    /* Client Stories 实录 */
    .story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .story-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
    }

    .story-card img {
      width: 45%;
      object-fit: cover;
    }

    .story-content {
      width: 55%;
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .story-tag {
      font-size: 0.8rem;
      color: var(--accent-color);
      margin-bottom: 8px;
      font-weight: 600;
    }

    .story-content h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .story-content p {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* Metrics Bar 横条指标 */
    .metrics-bar-section {
      background: linear-gradient(90deg, #100a1c 0%, #151329 50%, #0d1720 100%);
      border-top: 1px solid rgba(121, 40, 202, 0.3);
      border-bottom: 1px solid rgba(0, 223, 216, 0.2);
      padding: 50px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }

    .metric-value {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1;
      font-feature-settings: "tnum";
      font-variant-numeric: tabular-nums;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    .metric-title {
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 4px;
    }

    .metric-note {
      font-size: 0.82rem;
      color: var(--text-secondary);
    }

    /* Testimonials / 用户评价 */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .testi-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
    }

    .testi-quote {
      font-size: 0.95rem;
      color: #cfd2db;
      line-height: 1.75;
      margin-bottom: 20px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .author-role {
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    .author-name {
      font-weight: 700;
      font-size: 1rem;
    }

    /* News & Trends (内嵌资讯摘要) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
      margin-bottom: 35px;
    }

    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      color: var(--accent-color);
      margin-bottom: 12px;
    }

    .news-card h4 {
      font-size: 1.15rem;
      line-height: 1.45;
      margin-bottom: 10px;
    }

    .news-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* FAQ 收折区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      text-align: left;
      background: transparent;
      color: #fff;
      font-size: 1.05rem;
      font-weight: 600;
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s;
      color: var(--accent-color);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      padding: 0 24px;
      background: rgba(0, 0, 0, 0.2);
    }

    .faq-answer-inner {
      padding-bottom: 22px;
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.75;
    }

    .faq-item.active .faq-answer {
      max-height: 350px;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* CTA & 表单转换区 (单页面唯一线索收集收口) */
    .conversion-box {
      background: radial-gradient(circle at 50% 0%, rgba(121, 40, 202, 0.3) 0%, rgba(24, 26, 36, 1) 70%);
      border: 1px solid rgba(121, 40, 202, 0.4);
      border-radius: var(--radius-lg);
      padding: 60px 45px;
      box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
    }

    .conversion-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .form-pane {
      background: rgba(10, 11, 16, 0.6);
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      color: #cfd2db;
      margin-bottom: 6px;
    }

    .form-input, .form-select {
      width: 100%;
      background: #151722;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      color: #fff;
      transition: border-color 0.25s;
    }

    .form-input:focus, .form-select:focus {
      border-color: var(--accent-color);
    }

    /* Footer */
    .site-footer {
      background: #06070a;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      color: var(--text-secondary);
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 1.05rem;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a:hover {
      color: var(--accent-color);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.85rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .suite-grid {
        grid-template-columns: 1fr;
      }
      .suite-card.highlight {
        transform: none;
      }
      .vision-layout {
        grid-template-columns: 1fr;
      }
      .step-track {
        grid-template-columns: repeat(2, 1fr);
      }
      .story-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 30px;
      }
      .testi-grid {
        grid-template-columns: 1fr;
      }
      .news-grid {
        grid-template-columns: 1fr;
      }
      .conversion-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar-meta {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #0d0f17;
        padding: 25px;
        border-bottom: 1px solid var(--border-color);
        gap: 18px;
      }
      .menu-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .matrix-grid {
        grid-template-columns: 1fr;
      }
      .schedule-grid {
        grid-template-columns: 1fr;
      }
      .step-track {
        grid-template-columns: 1fr;
      }
      .story-card {
        flex-direction: column;
      }
      .story-card img, .story-content {
        width: 100%;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-status-strip {
        flex-direction: column;
        gap: 15px;
      }
    }