/* roulang page: index */
:root {
      --primary: #FF4D2E;
      --primary-dark: #E63E2A;
      --primary-light: #FFF0EC;
      --secondary: #1A1A2E;
      --accent: #FFB800;
      --bg: #F7F8FA;
      --white: #FFFFFF;
      --text: #2D3142;
      --text-light: #6C6F7D;
      --text-muted: #9A9DAC;
      --border: #E8EAED;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-md: 0 8px 30px rgba(0,0,0,0.12);
      --radius-card: 16px;
      --radius-btn: 8px;
      --radius-sm: 12px;
      --transition: 0.3s ease;
      --container: 1200px;
    }

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

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
      background-color: var(--bg);
      color: var(--text);
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
      border-radius: var(--radius-sm);
    }

    button, .btn {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: transparent;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: var(--transition);
      white-space: nowrap;
    }

    .container {
      width: 100%;
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* header / nav */
    .header {
      background: var(--white);
      border-bottom: 1px solid transparent;
      position: sticky;
      top: 0;
      z-index: 1000;
      height: 72px;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .header.scrolled {
      border-bottom: 1px solid var(--border);
      box-shadow: 0 1px 4px rgba(0,0,0,0.03);
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 24px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 22px;
      letter-spacing: 0.5px;
      color: var(--secondary);
      line-height: 1.2;
      flex-shrink: 0;
    }

    .logo-icon {
      width: 34px;
      height: 34px;
      background: var(--primary);
      color: white;
      border-radius: var(--radius-btn);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      font-weight: 500;
      font-size: 15px;
      color: var(--text);
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 0;
      transition: color var(--transition);
      position: relative;
    }

    .nav-links li a::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0px;
      height: 2px;
      width: 0%;
      background: var(--primary);
      transition: width var(--transition);
    }

    .nav-links li a:hover {
      color: var(--primary);
    }

    .nav-links li a:hover::after {
      width: 100%;
    }

    .btn-nav {
      background: var(--primary);
      color: white;
      padding: 10px 24px;
      border-radius: 40px;
      font-size: 15px;
      font-weight: 600;
      transition: var(--transition);
    }

    .btn-nav:hover {
      background: var(--primary-dark);
      transform: scale(1.03);
      box-shadow: 0 4px 12px rgba(255,77,46,0.35);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 4px;
      cursor: pointer;
      background: transparent;
    }

    .hamburger span {
      width: 24px;
      height: 3px;
      background: var(--secondary);
      border-radius: 3px;
      transition: var(--transition);
    }

    /* hero */
    .hero {
      background: linear-gradient(135deg, #FFFFFF 0%, #FFF4F0 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-inner {
      display: grid;
      grid-template-columns: 5fr 5fr;
      gap: 60px;
      align-items: center;
      padding: 80px 0 90px;
    }

    .hero-text h1 {
      font-size: 42px;
      font-weight: 700;
      color: var(--secondary);
      line-height: 1.4;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }

    .hero-text h1 span {
      color: var(--primary);
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-light);
      margin-bottom: 36px;
      max-width: 440px;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--primary);
      color: white;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-weight: 700;
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: scale(1.03);
      box-shadow: 0 8px 18px rgba(255,77,46,0.25);
    }

    .btn-outline {
      border: 2px solid var(--primary);
      color: var(--primary);
      background: transparent;
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-weight: 700;
    }

    .btn-outline:hover {
      background: var(--primary-light);
      transform: scale(1.03);
    }

    .hero-image {
      position: relative;
    }

    .hero-image img {
      border-radius: 20px;
      box-shadow: 0 20px 40px rgba(255,77,46,0.15);
      width: 100%;
    }

    @media(max-width:1024px){
      .hero-inner{
        grid-template-columns: 1fr;
        gap:40px;
      }
      .hero-image{order:-1;}
    }

    /* general sections */
    section {
      padding: 80px 0;
    }

    h2 {
      font-size: 32px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--secondary);
    }

    .section-sub {
      font-size: 18px;
      color: var(--text-light);
      max-width: 680px;
      margin-bottom: 48px;
      line-height: 1.6;
    }

    /* pain points */
    .pain-points {
      background: var(--secondary);
      color: white;
    }

    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 24px;
    }

    .pain-card {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(4px);
      border-radius: var(--radius-sm);
      padding: 36px 32px;
      display: flex;
      gap: 20px;
      align-items: flex-start;
    }

    .pain-number {
      font-size: 38px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
      min-width: 50px;
    }

    .pain-content h3 {
      font-size: 20px;
      margin-bottom: 14px;
      font-weight: 600;
      color: white;
    }

    .pain-content p {
      color: #D1D5DB;
      line-height: 1.7;
      font-size: 15px;
    }

    /* solution cards */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 24px;
    }

    .card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }

    .card-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 14px;
      margin-bottom: 24px;
    }

    .card h3 {
      font-size: 22px;
      margin-bottom: 14px;
      font-weight: 650;
    }

    .card p {
      color: var(--text-light);
      flex: 1;
    }

    .card-link {
      margin-top: 18px;
      font-weight: 650;
      color: var(--primary);
      background: none;
      border: none;
      padding: 0;
      display: inline-flex;
      align-items: center;
      gap:6px;
    }

    .card-link:hover {
      text-decoration: underline;
    }

    /* achievements badges */
    .badge-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap:28px;
    }

    .badge-item {
      background: var(--primary-light);
      border-radius: var(--radius-card);
      padding: 32px 20px;
      text-align: center;
    }

    .badge-number {
      font-size: 40px;
      font-weight: 700;
      color: var(--primary);
      font-family: 'DIN Alternate', 'Arial', sans-serif;
      letter-spacing: 0.2px;
    }

    .badge-label {
      color: #5C5F6E;
      font-size: 16px;
      margin-top: 8px;
    }

    /* testimonial */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 32px;
    }

    .testi-card {
      background: white;
      border-left: 5px solid var(--accent);
      padding: 30px 26px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-sm);
      font-style: italic;
    }

    .testi-avatar {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #e1e5ec;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .testi-footer {
      margin-top: 20px;
      display: flex;
      align-items: center;
      gap:14px;
      font-style: normal;
    }

    /* faq */
    .faq-list {
      margin-top: 12px;
    }

    details {
      border-bottom:1px solid var(--border);
      padding: 26px 0;
    }

    summary {
      display: flex;
      align-items: center;
      font-weight: 650;
      font-size: 17px;
      cursor:pointer;
    }

    .faq-q {
      color:var(--primary);
      font-weight:700;
      font-size:20px;
      margin-right:14px;
    }

    .answer {
      padding: 18px 0 0 36px;
      color: var(--text-light);
    }

    /* cta full */
    .cta-full {
      background: var(--primary);
      text-align:center;
    }
    .cta-full h2{
      color:white;
    }
    .btn-cta-white {
      border:2px solid white;
      background:transparent;
      color:white;
      padding:14px 40px;
      border-radius:40px;
      font-weight:700;
      margin-top:32px;
    }
    .btn-cta-white:hover{
      background:white;
      color:var(--primary);
    }

    footer {
      background: var(--secondary);
      color: #C4C7D3;
      padding:64px 0 32px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap:30px;
    }

    /* mobile nav & responsiveness */
    @media (max-width:1024px){
    .badge-grid{grid-template-columns: repeat(2,1fr);}
    }

    @media (max-width:768px){
      .nav-links{display:none;}
      .hamburger{display:flex;}
      .btn-nav-mobile{display:none;} 
      .hero-inner{padding:40px 0 50px;}
      .pain-grid,.solution-grid,.testimonial-grid,.footer-grid{grid-template-columns:1fr;}
      .badge-grid{grid-template-columns: 1fr 1fr;}
      .hero-text h1{font-size:28px;}
      section{padding:50px 0;}
    recipient:depending on design; adjusted footer etc 
    /* mobile menu inline styling handled by js if show logic uses .mobile-menu overr.*/ }

    .mobile-menu {
      display: none;
      flex-direction: column;
      background: white;
      position: absolute;
      top:72px;
      left:0;
      width:100%;
      box-shadow: 0 4px 20px rgba(0,0,0,0.1);
      padding:24px;
      gap:16px;
      z-index:999;
    }

    .mobile-menu a{font-weight:500; padding:8px 0;}

    @media(max-width:768px){
      .mobile-menu.open{display:flex;}
    }

    .counter-sr{visibility:hidden;} 
    footer a{color:#B0B3C1;}
    .nav-small-btn-consult {font-size:14px; padding:8px 20px;}