/* roulang page: index */
:root {
      --bg-primary: #0A0E17;
      --bg-secondary: #111827;
      --bg-card: #162032;
      --bg-card-hover: #1E2B42;
      --brand-green: #00D084;
      --brand-green-hover: #00BA76;
      --brand-blue: #3B82F6;
      --accent-red: #FF4757;
      --text-primary: #F8FAFC;
      --text-secondary: #94A3B8;
      --border-color: rgba(255, 255, 255, 0.08);
      --border-active: rgba(0, 208, 132, 0.45);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.4);
      --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      margin: 0;
      padding: 0;
      background-color: var(--bg-primary);
      color: var(--text-primary);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    a:hover, a:focus {
      color: var(--brand-green);
    }

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

    /* 顶栏双行导航体系 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 14, 23, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-top-row {
      padding: 0.75rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }

    .logo-badge-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--brand-green), #0284c7);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      color: #0A0E17;
      font-size: 1.1rem;
    }

    .brand-name-text {
      font-size: 1.35rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .pulse-live-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background: var(--brand-green);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--brand-green);
      animation: pulseGlow 1.8s infinite;
    }

    @keyframes pulseGlow {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 16px var(--brand-green); }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    .live-status-pill {
      font-size: 0.82rem;
      background: rgba(0, 208, 132, 0.1);
      color: var(--brand-green);
      border: 1px solid rgba(0, 208, 132, 0.25);
      padding: 0.25rem 0.75rem;
      border-radius: 30px;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }

    .nav-top-actions {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 1.5rem;
    }

    .nav-hotline {
      font-size: 0.88rem;
      color: var(--text-secondary);
    }
    .nav-hotline strong {
      color: var(--text-primary);
      margin-left: 0.35rem;
    }

    /* 次行：内容频道标签 */
    .nav-channel-row {
      background: #0d131f;
    }
    .channel-menu {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      overflow-x: auto;
      white-space: nowrap;
    }
    .channel-menu li a {
      display: block;
      padding: 0.8rem 1.25rem;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-secondary);
      position: relative;
    }
    .channel-menu li a:hover,
    .channel-menu li a.active {
      color: #FFFFFF;
    }
    .channel-menu li a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 1.25rem;
      right: 1.25rem;
      height: 2px;
      background: transparent;
      transition: var(--transition-smooth);
    }
    .channel-menu li a:hover::after,
    .channel-menu li a.active::after {
      background: var(--brand-green);
      box-shadow: 0 0 8px var(--brand-green);
    }

    /* 通用组件 */
    .btn-brand-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      background: var(--brand-green);
      color: #0A0E17 !important;
      font-weight: 700;
      padding: 0.75rem 1.8rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--brand-green);
      cursor: pointer;
      min-height: 44px;
      transition: var(--transition-smooth);
    }
    .btn-brand-primary:hover {
      background: var(--brand-green-hover);
      box-shadow: 0 0 20px rgba(0, 208, 132, 0.45);
      transform: translateY(-2px);
    }

    .btn-brand-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      background: transparent;
      color: var(--text-primary) !important;
      font-weight: 600;
      padding: 0.75rem 1.6rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      cursor: pointer;
      min-height: 44px;
      transition: var(--transition-smooth);
    }
    .btn-brand-outline:hover {
      border-color: var(--brand-blue);
      color: var(--brand-blue) !important;
      background: rgba(59, 130, 246, 0.08);
      transform: translateY(-2px);
    }

    .sec-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.35rem 0.9rem;
      background: rgba(0, 208, 132, 0.08);
      border: 1px solid rgba(0, 208, 132, 0.22);
      border-radius: 4px;
      color: var(--brand-green);
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      margin-bottom: 1rem;
    }

    .section-wrap {
      padding: 5rem 0;
      position: relative;
    }
    .bg-dark-alt {
      background-color: var(--bg-secondary);
    }
    .section-header {
      margin-bottom: 3.2rem;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 0.75rem;
      line-height: 1.35;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-secondary);
      max-width: 820px;
      margin: 0 auto;
      line-height: 1.75;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.75rem;
      height: 100%;
      transition: var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }
    .feature-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-active);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: rgba(0, 208, 132, 0.12);
      color: var(--brand-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 1.4rem;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.8rem;
    }
    .feature-card p {
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.7;
      margin: 0;
    }

    /* 板块一：Hero 选型对比与即时态势 */
    .hero-section {
      padding: 4.5rem 0 5.5rem;
      background: radial-gradient(circle at 50% 10%, rgba(0, 208, 132, 0.1) 0%, rgba(10, 14, 23, 1) 75%), url('/assets/images/a2b6397f6743bf02.jpg') center center/cover no-repeat;
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-overlay {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(10, 14, 23, 0.88);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 900;
      letter-spacing: -0.03em;
      line-height: 1.25;
      margin-bottom: 1.25rem;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #FFFFFF 30%, var(--brand-green) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 1.15rem;
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 900px;
      margin: 0 auto 2.5rem;
    }

    /* Hero 对比选型矩阵 */
    .hero-tier-grid {
      margin-top: 2rem;
    }
    .hero-tier-card {
      background: rgba(22, 32, 50, 0.85);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.2rem 1.8rem;
      backdrop-filter: blur(8px);
      transition: var(--transition-smooth);
      position: relative;
      text-align: left;
      height: 100%;
    }
    .hero-tier-card.featured-tier {
      border-color: var(--brand-green);
      background: rgba(22, 32, 50, 0.95);
      box-shadow: 0 0 35px rgba(0, 208, 132, 0.2);
      transform: translateY(-8px);
    }
    .tier-badge-top {
      position: absolute;
      top: 0;
      right: 1.8rem;
      background: var(--brand-green);
      color: #0A0E17;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 0.2rem 0.75rem;
      border-radius: 0 0 6px 6px;
      letter-spacing: 0.05em;
    }
    .tier-name {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 0.4rem;
      color: #FFFFFF;
    }
    .tier-desc {
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin-bottom: 1.2rem;
      min-height: 48px;
    }
    .tier-spec-list {
      list-style: none;
      margin: 0 0 1.8rem 0;
      padding: 0;
      border-top: 1px solid var(--border-color);
      padding-top: 1.2rem;
    }
    .tier-spec-list li {
      font-size: 0.9rem;
      color: var(--text-primary);
      margin-bottom: 0.75rem;
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
    .tier-spec-list li i {
      color: var(--brand-green);
      font-size: 0.85rem;
    }

    /* 痛点解构卡片 */
    .pain-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-left: 4px solid var(--accent-red);
      border-radius: var(--radius-sm);
      padding: 1.75rem 1.5rem;
      height: 100%;
    }
    .pain-tag {
      font-size: 0.75rem;
      font-weight: 700;
      background: rgba(255, 71, 87, 0.15);
      color: var(--accent-red);
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 0.75rem;
    }
    .pain-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.6rem;
    }
    .pain-card p {
      font-size: 0.92rem;
      color: var(--text-secondary);
      margin: 0;
    }

    /* 架构技术图解 */
    .arch-spec-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.2rem;
    }
    .arch-metric-item {
      display: flex;
      align-items: flex-start;
      gap: 1.2rem;
      margin-bottom: 1.6rem;
    }
    .arch-metric-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(59, 130, 246, 0.15);
      color: var(--brand-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      flex-shrink: 0;
    }

    /* 调度监控暗色区 */
    .command-stage {
      background: radial-gradient(circle at 50% 50%, rgba(17, 24, 39, 0.8) 0%, rgba(10, 14, 23, 1) 100%), url('/assets/images/8793ca09b518582b.webp') center center/cover no-repeat;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .command-mock-window {
      background: rgba(13, 19, 31, 0.95);
      border: 1px solid rgba(0, 208, 132, 0.3);
      border-radius: var(--radius-md);
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
      overflow: hidden;
    }
    .mock-win-header {
      background: #090d15;
      padding: 0.75rem 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-color);
    }
    .win-dots {
      display: flex;
      gap: 6px;
    }
    .win-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #374151;
    }
    .win-dot.red { background: #ef4444; }
    .win-dot.yellow { background: #f59e0b; }
    .win-dot.green { background: #10b981; }
    .mock-win-body {
      padding: 1.5rem;
    }

    .match-live-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1rem 1.25rem;
      background: rgba(22, 32, 50, 0.6);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 0.85rem;
    }
    .match-team {
      font-weight: 700;
      font-size: 1rem;
      width: 35%;
    }
    .match-team.guest {
      text-align: right;
    }
    .match-score-pill {
      background: #0A0E17;
      border: 1px solid var(--border-color);
      padding: 0.35rem 1.25rem;
      border-radius: 20px;
      font-family: monospace;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--brand-green);
      letter-spacing: 0.1em;
    }
    .match-meta-info {
      font-size: 0.8rem;
      color: var(--text-secondary);
      text-align: center;
      margin-top: 0.25rem;
    }

    /* 4步接入流程 */
    .step-chain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .step-node-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      position: relative;
      transition: var(--transition-smooth);
    }
    .step-node-card:hover {
      border-color: var(--brand-blue);
      transform: translateY(-4px);
    }
    .step-number-tag {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(59, 130, 246, 0.25);
      line-height: 1;
      margin-bottom: 0.85rem;
    }
    .step-node-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    .step-node-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin: 0;
    }

    /* 成果数据硬核条 */
    .metrics-bar-wrap {
      background: linear-gradient(90deg, #0f172a, #131d31, #0f172a);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 3.5rem 0;
    }
    .metric-data-num {
      font-size: 3rem;
      font-weight: 900;
      color: var(--brand-green);
      line-height: 1.1;
      font-family: system-ui, sans-serif;
      margin-bottom: 0.4rem;
    }
    .metric-data-label {
      font-size: 0.95rem;
      color: var(--text-secondary);
      font-weight: 500;
    }

    /* 用户评价卡片 */
    .quote-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.2rem 1.8rem;
      position: relative;
      height: 100%;
    }
    .quote-icon {
      font-size: 2rem;
      color: rgba(0, 208, 132, 0.25);
      margin-bottom: 1rem;
    }
    .quote-text {
      font-size: 0.96rem;
      color: var(--text-primary);
      line-height: 1.75;
      margin-bottom: 1.5rem;
    }
    .quote-author {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
    }
    .avatar-mock {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--brand-blue);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .author-name {
      font-weight: 700;
      font-size: 0.95rem;
    }
    .author-role {
      font-size: 0.82rem;
      color: var(--text-secondary);
    }

    /* FAQ 手风琴重置 */
    .accordion {
      background: transparent;
      border: none;
    }
    .accordion-item {
      background: var(--bg-card) !important;
      border: 1px solid var(--border-color) !important;
      border-radius: var(--radius-sm) !important;
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .accordion-title {
      background: transparent !important;
      color: var(--text-primary) !important;
      font-size: 1.1rem !important;
      font-weight: 700 !important;
      padding: 1.25rem 1.5rem !important;
      border: none !important;
    }
    .accordion-title::before {
      color: var(--brand-green) !important;
    }
    .accordion-title:hover {
      color: var(--brand-green) !important;
    }
    .accordion-content {
      background: transparent !important;
      border: none !important;
      color: var(--text-secondary) !important;
      font-size: 0.96rem !important;
      line-height: 1.8 !important;
      padding: 0 1.5rem 1.4rem 1.5rem !important;
    }

    /* 底部 CTA 申请表单 */
    .cta-stage {
      background: linear-gradient(180deg, var(--bg-secondary) 0%, #080b12 100%);
      border-top: 1px solid var(--border-color);
      padding: 5.5rem 0;
    }
    .form-container {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
    }
    .form-control-custom {
      background: #0c121e;
      border: 1px solid var(--border-color);
      color: #FFFFFF;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-sm);
      margin-bottom: 1.2rem;
      font-size: 0.95rem;
      height: 48px;
    }
    .form-control-custom:focus {
      background: #0f1626;
      border-color: var(--brand-green);
      outline: none;
      box-shadow: 0 0 10px rgba(0, 208, 132, 0.25);
    }
    label.form-label {
      color: var(--text-secondary);
      font-size: 0.88rem;
      margin-bottom: 0.35rem;
      font-weight: 600;
    }

    /* 页脚 */
    .site-footer {
      background: #060910;
      border-top: 1px solid var(--border-color);
      padding: 4.5rem 0 2rem;
      color: var(--text-secondary);
      font-size: 0.92rem;
    }
    .footer-col-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links li a {
      color: var(--text-secondary);
    }
    .footer-links li a:hover {
      color: var(--brand-green);
    }
    .copyright-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 3.5rem;
      padding-top: 1.75rem;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 移动端断点适配 */
    @media (max-width: 1024px) {
      .step-chain-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2.15rem;
      }
      .section-title {
        font-size: 1.65rem;
      }
      .nav-top-actions .nav-hotline,
      .live-status-pill {
        display: none;
      }
      .step-chain-grid {
        grid-template-columns: 1fr;
      }
      .hero-tier-card.featured-tier {
        transform: none;
      }
      .metric-data-num {
        font-size: 2.4rem;
      }
    }