/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    :root {
      --primary: #0A1F3F;
      --secondary: #E63946;
      --accent: #F4A261;
      --bg: #F8F9FA;
      --card-bg: #FFFFFF;
      --dark-bg: #0A1F3F;
      --text-main: #1A1A2E;
      --text-soft: #5A5A72;
      --border: #E5E7EB;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-hover: 0 8px 30px rgba(0,0,0,0.10);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.7;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }
    .font-display {
      font-family: "Inter", "SF Pro Display", sans-serif;
    }
    .container-custom {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    @media (min-width: 1024px) {
      .container-custom {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    .nav-blur {
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(229,231,235,0.7);
    }
    .card-hover {
      transition: all 0.3s ease;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      background: var(--card-bg);
      box-shadow: var(--shadow-sm);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(230,57,70,0.25);
    }
    .btn-primary {
      background-color: var(--secondary);
      color: white;
      border-radius: 0.5rem;
      padding: 0.75rem 1.75rem;
      font-weight: 600;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(230,57,70,0.25);
    }
    .btn-primary:hover {
      background-color: #C1121F;
      transform: scale(1.03);
    }
    .btn-secondary {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
      border-radius: 0.5rem;
      padding: 0.75rem 1.75rem;
      font-weight: 600;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .btn-secondary:hover {
      background: var(--primary);
      color: white;
    }
    .btn-ghost {
      background: transparent;
      color: white;
      border: 2px solid rgba(255,255,255,0.6);
      border-radius: 0.5rem;
      padding: 0.75rem 1.75rem;
      font-weight: 600;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .btn-ghost:hover {
      background: rgba(255,255,255,0.15);
      border-color: white;
    }
    .section-padding {
      padding-top: 5rem;
      padding-bottom: 5rem;
    }
    @media (min-width: 768px) {
      .section-padding {
        padding-top: 6rem;
        padding-bottom: 6rem;
      }
    }
    .hero-title {
      font-size: 2.5rem;
      line-height: 1.2;
      font-weight: 800;
      color: var(--primary);
    }
    @media (min-width: 768px) {
      .hero-title {
        font-size: 3.2rem;
      }
    }
    @media (min-width: 1024px) {
      .hero-title {
        font-size: 3.8rem;
      }
    }
    .accent-underline {
      background: linear-gradient(to right, var(--secondary), var(--accent));
      height: 4px;
      width: 80px;
      margin: 1rem auto 1.5rem;
      border-radius: 2px;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s ease;
      padding: 0 1rem;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0.75rem 1rem 1rem;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }
    .mobile-menu {
      display: none;
    }
    @media (max-width: 767px) {
      .mobile-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        padding: 1.5rem 1rem;
        z-index: 100;
      }
    }
    .comparison-card.recommended {
      border: 2px solid var(--secondary);
      box-shadow: 0 12px 28px rgba(230,57,70,0.15);
      transform: scale(1.02);
    }
    @media (min-width: 768px) {
      .comparison-card.recommended {
        transform: scale(1.05);
      }
    }