/* roulang page: index */
:root {
      --primary: #059669;
      --primary-hover: #047857;
      --accent: #84CC16;
      --accent-glow: #CCFF00;
      --dark-slate: #0F172A;
      --dark-card: #1E293B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 12px 28px -4px rgba(5, 150, 105, 0.15);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    h1, h2, h3, h4 {
      font-family: inherit;
      color: var(--text-main);
      font-weight: 700;
      letter-spacing: -0.02em;
    }

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

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

    /* 顶部微型信息条 */
    .top-bar-info {
      background: var(--dark-slate);
      color: #94A3B8;
      font-size: 0.85rem;
      padding: 0.45rem 1rem;
    }
    .top-bar-info .grid-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--accent-glow);
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-glow);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-glow);
    }

    /* 内缩圆角浮动主导航 */
    .nav-wrapper {
      position: sticky;
      top: 0.85rem;
      z-index: 1000;
      padding: 0 1rem;
      margin-bottom: 1.5rem;
    }
    .floating-nav {
      max-width: 1200px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: 24px;
      padding: 0.65rem 1.4rem;
      box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
    }
    .logo-badge {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #FFF;
      font-size: 0.8rem;
      padding: 2px 7px;
      border-radius: 6px;
      font-weight: 900;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      gap: 1.25rem;
    }
    .nav-menu li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 0.35rem 0.5rem;
      border-radius: var(--radius-sm);
    }
    .nav-menu li a:hover,
    .nav-menu li a.active {
      color: var(--primary);
    }
    .btn-nav {
      background: var(--primary);
      color: #FFF !important;
      padding: 0.45rem 1.1rem !important;
      border-radius: 20px;
      font-weight: 600 !important;
      box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
    }
    .btn-nav:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
    }

    /* 基础板块公用规范 */
    .site-section {
      padding: 4.5rem 0;
      position: relative;
    }
    .section-white {
      background: var(--bg-white);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-light {
      background: var(--bg-light);
    }
    .section-dark {
      background: var(--dark-slate);
      color: #F8FAFC;
    }
    .section-dark h2, .section-dark h3 {
      color: #FFFFFF;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }
    .section-header {
      margin-bottom: 2.75rem;
    }
    .section-kicker {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 0.5rem;
      background: rgba(5, 150, 105, 0.08);
      padding: 0.25rem 0.75rem;
      border-radius: 20px;
    }
    .section-dark .section-kicker {
      background: rgba(132, 204, 22, 0.15);
      color: var(--accent-glow);
    }
    .section-title {
      font-size: 2rem;
      margin-bottom: 0.75rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 760px;
      line-height: 1.8;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0.8rem 1.6rem;
      border-radius: var(--radius-md);
      font-size: 1rem;
      font-weight: 600;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      min-height: 48px;
    }
    .btn-primary {
      background: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #FFF;
      box-shadow: 0 6px 20px rgba(5, 150, 105, 0.4);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(5, 150, 105, 0.04);
    }
    .btn-accent {
      background: var(--accent-glow);
      color: var(--dark-slate);
      font-weight: 700;
    }
    .btn-accent:hover {
      background: #bbf000;
      color: var(--dark-slate);
    }

    /* 板块 1：Hero 区域 (短视频竖屏质感主视觉结构) */
    .hero-section {
      padding: 2.5rem 0 4.5rem;
      background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.08), transparent 60%);
    }
    .hero-h1 {
      font-size: 2.85rem;
      line-height: 1.25;
      margin-bottom: 1.25rem;
    }
    .hero-p {
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      margin-bottom: 2rem;
    }
    .hero-phone-mockup {
      width: 100%;
      max-width: 380px;
      margin: 0 auto;
      border-radius: 36px;
      padding: 12px;
      background: #0B1120;
      box-shadow: 0 25px 60px -15px rgba(15, 23, 42, 0.35);
      border: 4px solid #334155;
      position: relative;
    }
    .phone-screen {
      border-radius: 26px;
      overflow: hidden;
      position: relative;
      background: #000;
    }
    .phone-screen img {
      width: 100%;
      height: 480px;
      object-fit: cover;
      display: block;
    }
    .live-tracking-overlay {
      position: absolute;
      bottom: 16px;
      left: 14px;
      right: 14px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 14px;
      padding: 12px;
      color: #FFF;
    }
    .stream-tag {
      display: inline-block;
      font-size: 0.7rem;
      background: #EF4444;
      color: #FFF;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    /* 板块 2：行业应用痛点对比剖析区 */
    .compare-card {
      background: #FFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      height: 100%;
      box-shadow: var(--shadow-sm);
    }
    .compare-header-bad {
      background: #FEF2F2;
      border-bottom: 1px solid #FEE2E2;
      padding: 1.25rem 1.5rem;
      color: #991B1B;
      font-weight: 700;
    }
    .compare-header-good {
      background: #ECFDF5;
      border-bottom: 1px solid #D1FAE5;
      padding: 1.25rem 1.5rem;
      color: #065F46;
      font-weight: 700;
    }
    .compare-body {
      padding: 1.5rem;
    }
    .compare-list {
      list-style: none;
      margin: 0;
    }
    .compare-list li {
      padding: 0.75rem 0;
      border-bottom: 1px dashed var(--border-color);
      font-size: 0.95rem;
      color: var(--text-muted);
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }
    .compare-list li:last-child {
      border-bottom: none;
    }
    .dot-bad {
      color: #EF4444;
      font-weight: bold;
    }
    .dot-good {
      color: var(--primary);
      font-weight: bold;
    }

    /* 板块 3：核心架构底层参数区 */
    .tech-metric-panel {
      background: var(--dark-slate);
      color: #FFF;
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      position: relative;
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
      margin-top: 2rem;
    }
    .metric-item {
      background: rgba(255, 255, 255, 0.05);
      padding: 1.2rem;
      border-radius: var(--radius-md);
      border-left: 3px solid var(--accent);
    }
    .metric-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--accent-glow);
      line-height: 1.1;
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 0.85rem;
      color: #94A3B8;
    }

    /* 板块 4：六大核心技术优势网格 */
    .feature-card {
      background: #FFF;
      border-radius: var(--radius-md);
      padding: 1.8rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      height: 100%;
      transition: var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(5, 150, 105, 0.3);
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(5, 150, 105, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.2rem;
      color: var(--primary);
      font-size: 1.4rem;
      font-weight: 800;
    }
    .feature-card h3 {
      font-size: 1.2rem;
      margin-bottom: 0.7rem;
    }
    .feature-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 5：场景方案套件 */
    .product-plan-card {
      background: #FFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      height: 100%;
      transition: var(--transition);
    }
    .product-plan-card:hover {
      box-shadow: var(--shadow-hover);
    }
    .product-plan-img {
      height: 200px;
      overflow: hidden;
    }
    .product-plan-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .product-plan-card:hover .product-plan-img img {
      transform: scale(1.05);
    }
    .product-plan-content {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-plan-content h3 {
      font-size: 1.3rem;
      margin-bottom: 0.75rem;
    }
    .product-plan-content p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
    }
    .product-spec-list {
      list-style: none;
      margin: 0 0 1.5rem;
      padding: 0;
      flex-grow: 1;
    }
    .product-spec-list li {
      font-size: 0.88rem;
      padding: 0.4rem 0;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块 6：三步敏捷接入 */
    .step-card {
      background: #FFF;
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      border: 1px solid var(--border-color);
      position: relative;
      height: 100%;
    }
    .step-number {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1;
      color: rgba(5, 150, 105, 0.12);
      position: absolute;
      top: 1rem;
      right: 1.2rem;
    }
    .step-card h3 {
      font-size: 1.2rem;
      margin-bottom: 0.75rem;
      position: relative;
    }
    .step-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      position: relative;
    }

    /* 板块 7：深色战术理念与算法核心 */
    .tactics-board {
      background: var(--dark-card);
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 2rem;
      position: relative;
      overflow: hidden;
    }
    .tactics-code-window {
      background: #090D16;
      border-radius: var(--radius-sm);
      padding: 1.2rem;
      font-family: Consolas, monospace;
      font-size: 0.85rem;
      color: #38BDF8;
      line-height: 1.6;
    }

    /* 板块 8：标杆案例 */
    .story-card {
      background: #FFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      margin-bottom: 2rem;
    }
    .story-card-body {
      padding: 2.2rem;
    }
    .story-badge {
      display: inline-block;
      background: rgba(5, 150, 105, 0.1);
      color: var(--primary);
      padding: 3px 10px;
      font-size: 0.8rem;
      border-radius: 4px;
      font-weight: 700;
      margin-bottom: 0.75rem;
    }
    .stat-badge-row {
      display: flex;
      gap: 1.5rem;
      margin-top: 1.5rem;
      padding-top: 1.2rem;
      border-top: 1px solid var(--border-color);
    }
    .stat-badge-box span {
      display: block;
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--primary);
    }
    .stat-badge-box small {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 9：动态成果指标条 */
    .counter-strip {
      background: linear-gradient(135deg, var(--dark-slate), #1E293B);
      color: #FFF;
      padding: 3.5rem 0;
      border-top: 2px solid var(--primary);
    }
    .counter-item {
      text-align: center;
      padding: 1rem;
    }
    .counter-value {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--accent-glow);
      line-height: 1.1;
      margin-bottom: 0.35rem;
    }
    .counter-desc {
      font-size: 0.95rem;
      color: #94A3B8;
    }

    /* 板块 10：教练与专家口碑 */
    .testimonial-card {
      background: #FFF;
      border-radius: var(--radius-md);
      padding: 1.8rem;
      border: 1px solid var(--border-color);
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    /* 板块 11：适用人群矩阵 */
    .matrix-card {
      background: #FFF;
      border-radius: var(--radius-md);
      padding: 1.5rem;
      border-top: 3px solid var(--primary);
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .matrix-card h3 {
      font-size: 1.15rem;
      margin-bottom: 0.5rem;
    }
    .matrix-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
    }
    .matrix-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .matrix-tag {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 板块 12：资讯摘编 */
    .news-card {
      background: #FFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 160px;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 1.25rem;
      flex-grow: 1;
    }
    .news-date {
      font-size: 0.8rem;
      color: #94A3B8;
      margin-bottom: 6px;
    }
    .news-body h3 {
      font-size: 1.05rem;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .news-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 13：FAQ 手风琴 */
    .faq-item {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 0.85rem;
      overflow: hidden;
    }
    .faq-question {
      padding: 1.2rem 1.5rem;
      font-weight: 700;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFF;
    }
    .faq-answer {
      padding: 0 1.5rem 1.25rem;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 14：即时战术咨询单行转化区 */
    .conversion-banner {
      background: linear-gradient(135deg, #065F46, var(--dark-slate));
      border-radius: var(--radius-lg);
      padding: 3rem 2.5rem;
      color: #FFF;
    }
    .form-box {
      display: flex;
      gap: 10px;
      margin-top: 1.5rem;
    }
    .form-input {
      flex-grow: 1;
      height: 50px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.08);
      color: #FFF;
      padding: 0 1.2rem;
      outline: none;
    }
    .form-input::placeholder {
      color: #94A3B8;
    }

    /* 页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-logo {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 1rem;
    }
    .footer-desc {
      font-size: 0.88rem;
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .footer-col h4 {
      color: #FFF;
      font-size: 1rem;
      margin-bottom: 1.2rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: var(--accent-glow);
    }
    .footer-bottom {
      margin-top: 3.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.82rem;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
    }

    /* 响应式优化 */
    @media (max-width: 1023px) {
      .hero-h1 {
        font-size: 2.2rem;
      }
      .nav-menu {
        display: none;
      }
      .metric-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 639px) {
      .hero-h1 {
        font-size: 1.85rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .form-box {
        flex-direction: column;
      }
      .counter-value {
        font-size: 2.1rem;
      }
    }