/* roulang page: index */
:root {
      --bg-base: #0A0C14;
      --bg-darker: #06080E;
      --bg-surface: #12172A;
      --bg-card: #161D36;
      --neon-green: #00FF87;
      --neon-cyan: #60EFFF;
      --neon-purple: #7B2CBF;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --border-color: rgba(255, 255, 255, 0.08);
      --border-highlight: rgba(0, 255, 135, 0.35);
      --card-radius: 14px;
      --glow-shadow: 0 0 25px rgba(0, 255, 135, 0.15);
      --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

    /* 顶部双行导航系统 */
    .top-status-bar {
      background-color: var(--bg-darker);
      border-bottom: 1px solid var(--border-color);
      font-size: 0.82rem;
      color: var(--text-dim);
      padding: 6px 0;
    }
    .top-status-bar .status-badge {
      display: inline-block;
      width: 7px;
      height: 7px;
      background: var(--neon-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-green);
      margin-right: 6px;
    }

    .main-navbar {
      background: rgba(10, 12, 20, 0.85);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition-smooth);
      padding: 14px 0;
    }
    .navbar-brand-text {
      font-size: 1.45rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, #FFF 20%, var(--neon-green) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .navbar-brand-text i {
      color: var(--neon-green);
      -webkit-text-fill-color: initial;
    }
    .nav-link {
      color: var(--text-muted) !important;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 16px !important;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: #FFF !important;
    }
    .nav-link.active::after, .nav-link:hover::after {
      content: "";
      position: absolute;
      bottom: 2px;
      left: 16px;
      right: 16px;
      height: 2px;
      background: var(--neon-green);
      box-shadow: 0 0 10px var(--neon-green);
    }

    .navbar-toggler {
      border: 1px solid var(--border-color);
      color: var(--neon-green);
      padding: 6px 10px;
    }
    .navbar-toggler:focus {
      box-shadow: none;
    }

    /* 按钮通用体系 */
    .btn-neon-primary {
      background: var(--neon-green);
      color: #06080E !important;
      font-weight: 700;
      font-size: 0.95rem;
      padding: 10px 24px;
      border-radius: 30px;
      border: 1px solid var(--neon-green);
      box-shadow: 0 0 16px rgba(0, 255, 135, 0.25);
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-neon-primary:hover {
      background: #00e57a;
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(0, 255, 135, 0.45);
    }
    .btn-neon-ghost {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main) !important;
      font-weight: 600;
      font-size: 0.95rem;
      padding: 10px 24px;
      border-radius: 30px;
      border: 1px solid var(--border-color);
      transition: var(--transition-smooth);
    }
    .btn-neon-ghost:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: var(--neon-cyan);
      color: var(--neon-cyan) !important;
      transform: translateY(-2px);
    }

    /* 板块排版与通用样式 */
    .section-wrap {
      padding: 100px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-darker) 100%);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--neon-green);
      background: rgba(0, 255, 135, 0.08);
      border: 1px solid rgba(0, 255, 135, 0.2);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: #FFF;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 760px;
      line-height: 1.7;
    }

    /* Bento 首屏轮播定制 */
    .hero-section {
      padding: 40px 0 80px;
      position: relative;
    }
    .carousel-item {
      min-height: 480px;
    }
    .hero-main-bento {
      background: linear-gradient(135deg, rgba(22, 29, 54, 0.85) 0%, rgba(10, 12, 20, 0.95) 100%);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 48px;
      position: relative;
      overflow: hidden;
      backdrop-filter: blur(10px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .hero-main-bento::before {
      content: "";
      position: absolute;
      top: -100px;
      right: -100px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(0, 255, 135, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(96, 239, 255, 0.1);
      border: 1px solid rgba(96, 239, 255, 0.3);
      color: var(--neon-cyan);
      font-size: 0.82rem;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 3.1rem;
      font-weight: 900;
      line-height: 1.2;
      color: #FFF;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title span {
      background: linear-gradient(90deg, var(--neon-green), var(--neon-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-bottom: 34px;
      max-width: 680px;
      line-height: 1.75;
    }
    .hero-side-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      height: 100%;
      transition: var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }
    .hero-side-card:hover {
      border-color: var(--border-highlight);
      transform: translateY(-4px);
    }
    .hero-side-img {
      width: 100%;
      height: 140px;
      object-fit: cover;
      border-radius: 10px;
      margin-bottom: 16px;
      border: 1px solid var(--border-color);
    }

    /* 轮播指示条 */
    .carousel-indicators [button] {
      background-color: var(--text-dim);
      height: 4px;
      border-radius: 2px;
    }
    .carousel-indicators .active {
      background-color: var(--neon-green);
      box-shadow: 0 0 8px var(--neon-green);
    }

    /* 卡片与网格系统 */
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 30px;
      height: 100%;
      transition: var(--transition-smooth);
      position: relative;
    }
    .feature-card:hover {
      border-color: var(--border-highlight);
      box-shadow: var(--glow-shadow);
      transform: translateY(-4px);
    }
    .feature-icon-box {
      width: 54px;
      height: 54px;
      border-radius: 12px;
      background: rgba(0, 255, 135, 0.08);
      border: 1px solid rgba(0, 255, 135, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-green);
      font-size: 1.5rem;
      margin-bottom: 22px;
    }
    .feature-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 12px;
    }
    .feature-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 产品卡片矩阵 */
    .product-tier-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 34px;
      height: 100%;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition-smooth);
    }
    .product-tier-card.popular {
      border-color: var(--neon-green);
      box-shadow: 0 0 30px rgba(0, 255, 135, 0.12);
    }
    .popular-tag {
      position: absolute;
      top: 18px;
      right: 20px;
      background: var(--neon-green);
      color: #06080E;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 12px;
    }
    .product-list {
      list-style: none;
      padding: 0;
      margin: 24px 0 auto;
    }
    .product-list li {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }
    .product-list li i {
      color: var(--neon-green);
      margin-top: 3px;
    }

    /* 控制台与推演展示区 (板块5) */
    .console-box {
      background: #060913;
      border: 1px solid rgba(96, 239, 255, 0.2);
      border-radius: 14px;
      padding: 24px;
      font-family: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.88rem;
    }
    .console-header {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 18px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background: #FF5F56; }
    .dot-yellow { background: #FFBD2E; }
    .dot-green { background: #27C93F; }

    /* 数据指标条 */
    .metric-item {
      padding: 24px;
      text-align: center;
      border-right: 1px solid var(--border-color);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-value {
      font-size: 3rem;
      font-weight: 900;
      letter-spacing: -1px;
      background: linear-gradient(135deg, #FFF 0%, var(--neon-green) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-label {
      font-size: 0.92rem;
      color: var(--text-muted);
    }

    /* 手风琴 FAQ 深度定制 */
    .accordion-item {
      background-color: var(--bg-card) !important;
      border: 1px solid var(--border-color) !important;
      border-radius: 10px !important;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .accordion-button {
      background-color: var(--bg-card) !important;
      color: #FFF !important;
      font-weight: 600;
      font-size: 1.05rem;
      padding: 20px 24px;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      color: var(--neon-green) !important;
      border-bottom: 1px solid var(--border-color);
    }
    .accordion-button::after {
      filter: invert(1);
    }
    .accordion-body {
      background-color: var(--bg-card);
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      padding: 22px 24px;
    }

    /* 浮动与收口转化条 */
    .cta-card-box {
      background: radial-gradient(circle at 50% 50%, rgba(123, 44, 191, 0.25) 0%, rgba(18, 23, 42, 0.95) 100%);
      border: 1px solid rgba(0, 255, 135, 0.3);
      border-radius: 20px;
      padding: 60px 40px;
      box-shadow: 0 0 50px rgba(0, 255, 135, 0.1);
    }

    /* 结构化页脚 */
    .site-footer {
      background: var(--bg-darker);
      border-top: 1px solid var(--border-color);
      padding: 80px 0 30px;
      color: var(--text-muted);
      font-size: 0.92rem;
    }
    .footer-title {
      color: #FFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 22px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--neon-green);
    }
    .footer-bottom {
      margin-top: 60px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.85rem;
      color: var(--text-dim);
    }

    @media (max-width: 991px) {
      .hero-title { font-size: 2.3rem; }
      .section-title { font-size: 1.85rem; }
      .metric-item { border-right: none; border-bottom: 1px solid var(--border-color); }
      .metric-item:last-child { border-bottom: none; }
      .hero-main-bento { padding: 30px; }
    }