/* roulang page: index */
:root {
      --primary-deep: #0F172A;
      --gradient-start: #F43F5E;
      --gradient-end: #FB923C;
      --bg-light: #F8FAFC;
      --text-dark: #1E293B;
      --text-muted: #64748B;
      --card-bg: #FFFFFF;
      --faq-open-bg: #FFF1F2;
      --border-light: #E2E8F0;
      --rose-light: #FFF1F2;
      --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
      --shadow-lg: 0 20px 30px -10px rgba(0, 0, 0, 0.08), 0 10px 15px -8px rgba(0, 0, 0, 0.04);
      --radius-2xl: 1rem;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background-color: #fff;
      color: var(--text-dark);
      line-height: 1.6;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }

    .container-custom {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    @media (min-width: 640px) {
      .container-custom {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    @media (min-width: 1024px) {
      .container-custom {
        padding-left: 2.5rem;
        padding-right: 2.5rem;
      }
    }

    .brand-gradient-text {
      background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .brand-gradient-bg {
      background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    }

    .nav-link {
      position: relative;
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
      transition: width 0.3s ease;
    }

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

    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.3s ease;
    }
    .card-hover:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .decor-left-bar {
      border-left: 4px solid;
      border-image: linear-gradient(180deg, var(--gradient-start), var(--gradient-end)) 1;
      padding-left: 1.5rem;
    }

    .faq-item {
      border-bottom: 1px solid var(--border-light);
    }
    .faq-item[open] .faq-question {
      background-color: var(--faq-open-bg);
    }
    .faq-icon {
      transition: transform 0.25s ease;
    }
    .faq-item[open] .faq-icon {
      transform: rotate(180deg);
    }

    .mobile-menu {
      transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    .mobile-menu.hidden {
      opacity: 0;
      visibility: hidden;
    }
    .menu-line {
      transition: all 0.3s ease;
    }
    .menu-open .line1 {
      transform: rotate(45deg) translate(5px, 5px);
    }
    .menu-open .line2 {
      opacity: 0;
    }
    .menu-open .line3 {
      transform: rotate(-45deg) translate(5px, -5px);
    }

    @media (max-width: 767px) {
      .hero-content {
        text-align: left;
      }
      .grid-cols-mobile-1 {
        grid-template-columns: 1fr;
      }
    }

@keyframes marquee {
      0% { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }
    .animate-marquee {
      animation: marquee 25s linear infinite;
    }