/* roulang page: index */
:root {
      --primary-color: #0a58ca;
      --navy-deep: #1a365d;
      --bg-dark: #0F141C;
      --text-main: #0B0F19;
      --text-muted: #475569;
      --border-light: rgba(226, 232, 240, 0.85);
    }
    html {
      box-sizing: border-box;
      text-size-adjust: 100%;
    }
    *, *:before, *:after {
      box-sizing: inherit;
    }
    body {
      color: var(--text-main);
      background-color: #F8F9FA;
      line-height: 1.7;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
    }
    .hover-card-transition {
      transition: all 250ms cubic-bezier(0.16, 1, 0.3, 1);
    }
    .hover-card-transition:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(10, 88, 202, 0.12);
      border-color: rgba(10, 88, 202, 0.3);
    }
    .title-line::after {
      content: '';
      display: block;
      width: 44px;
      height: 4px;
      background: linear-gradient(90deg, #0a58ca, #00D2D3);
      border-radius: 2px;
      margin-top: 10px;
    }
    .title-line-center::after {
      content: '';
      display: block;
      width: 48px;
      height: 4px;
      background: linear-gradient(90deg, #0a58ca, #00D2D3);
      border-radius: 2px;
      margin: 12px auto 0 auto;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 300ms ease-out, opacity 250ms ease-in-out;
      opacity: 0;
    }
    .accordion-item.active .accordion-content {
      max-height: 320px;
      opacity: 1;
    }
    .accordion-item.active .accordion-icon {
      transform: rotate(180deg);
      color: #0a58ca;
    }