/* roulang page: index */
:root {
      --primary: #00D285;
      --primary-hover: #00ba75;
      --primary-glow: rgba(0, 210, 133, 0.25);
      --secondary: #6C5CE7;
      --secondary-hover: #5b4cc4;
      --bg: #0E1117;
      --surface: #161B22;
      --surface-light: #21262D;
      --border: rgba(255, 255, 255, 0.08);
      --border-focus: rgba(0, 210, 133, 0.4);
      --text: #F0F6FC;
      --text-muted: #8B949E;
      --text-sub: #484F58;
      --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius: 8px;
      --shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg);
      color: var(--text);
      font-family: var(--font-stack);
      line-height: 1.68;
    }

    body {
      overflow-x: hidden;
      background-color: var(--bg);
      -webkit-font-smoothing: antialiased;
      padding-bottom: 74px; /* Space for sticky bar */
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Top Bar */
    .top-bar {
      background: #090d12;
      border-bottom: 1px solid var(--border);
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .dot-live {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary);
    }
    .top-bar-links {
      display: flex;
      gap: 20px;
    }
    .top-bar-links a:hover {
      color: var(--primary);
    }

    /* Header Nav */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(14, 17, 23, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: -0.02em;
    }
    .brand-logo span {
      color: var(--primary);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }
    .nav-links a {
      font-size: 15px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      line-height: 1.4;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #04140c;
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 0 16px var(--primary-glow);
      transform: translateY(-1px);
    }
    .btn-secondary {
      background-color: var(--secondary);
      color: #ffffff;
    }
    .btn-secondary:hover {
      background-color: var(--secondary-hover);
      box-shadow: 0 0 16px rgba(108, 92, 231, 0.35);
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--border);
      background-color: rgba(255, 255, 255, 0.03);
      color: var(--text);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: rgba(0, 210, 133, 0.05);
    }

    /* Section Global */
    section {
      padding: 84px 0;
      position: relative;
    }
    .section-alt {
      background-color: #12161f;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .section-head {
      margin-bottom: 48px;
    }
    .section-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--primary);
      background: rgba(0, 210, 133, 0.1);
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
      border: 1px solid rgba(0, 210, 133, 0.2);
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.25;
      color: var(--text);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 820px;
      line-height: 1.7;
    }

    /* Hero Section (Blueprint: Promotion main visual + burst badge + strong CTA) */
    .hero-wrap {
      position: relative;
      padding: 100px 0 120px;
      background: radial-gradient(circle at 80% 20%, rgba(108, 92, 231, 0.18), transparent 45%),
                  radial-gradient(circle at 20% 80%, rgba(0, 210, 133, 0.12), transparent 45%),
                  url('/assets/images/7254e8c0015ad5cc.jpg') center/cover no-repeat;
      border-bottom: 1px solid var(--border);
      overflow: hidden;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(14, 17, 23, 0.88) 0%, rgba(14, 17, 23, 0.96) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 880px;
    }
    .burst-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(90deg, #ff4757, #ff6b81);
      color: #fff;
      font-size: 13px;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 20px;
      margin-bottom: 24px;
      box-shadow: 0 0 15px rgba(255, 71, 87, 0.4);
      animation: pulseBadge 2.4s infinite;
    }
    @keyframes pulseBadge {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.03); }
    }
    .hero-h1 {
      font-size: 46px;
      font-weight: 800;
      line-height: 1.22;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
      color: #ffffff;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #00D285, #6C5CE7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 18px;
      color: #b3bdca;
      margin-bottom: 36px;
      line-height: 1.75;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-actions .btn {
      padding: 14px 34px;
      font-size: 16px;
    }
    .hero-highlights {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      color: var(--text-muted);
      font-size: 14px;
    }
    .hero-highlight-item {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .hero-highlight-item i {
      color: var(--primary);
      font-style: normal;
      font-weight: bold;
    }

    /* Cards Grid System */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      transition: var(--transition);
      position: relative;
    }
    .card:hover {
      transform: translateY(-4px);
      border-color: var(--border-focus);
      box-shadow: var(--shadow);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 6px;
      background: rgba(0, 210, 133, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 20px;
      font-weight: bold;
    }
    .card-title {
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Banner Strip / Metrics */
    .metrics-bar {
      background: linear-gradient(90deg, #131822 0%, #171d2b 100%);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 44px 0;
    }
    .metric-box {
      text-align: left;
      border-left: 2px solid var(--primary);
      padding-left: 18px;
    }
    .metric-number {
      font-size: 38px;
      font-weight: 900;
      color: #fff;
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-number em {
      font-style: normal;
      font-size: 20px;
      color: var(--primary);
      margin-left: 4px;
    }
    .metric-label {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* Workflow Stepper */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 24px;
      border-radius: var(--radius);
      position: relative;
    }
    .step-index {
      font-size: 28px;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.15);
      margin-bottom: 10px;
      line-height: 1;
    }
    .step-name {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--primary);
    }

    /* Stories & Deep Panels */
    .story-card {
      display: grid;
      grid-template-columns: 1fr 1fr;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      margin-bottom: 24px;
    }
    .story-card.reverse {
      direction: rtl;
    }
    .story-card.reverse .story-body {
      direction: ltr;
    }
    .story-img-wrap {
      position: relative;
      min-height: 280px;
    }
    .story-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 36px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-tag {
      font-size: 12px;
      color: var(--secondary);
      font-weight: 600;
      margin-bottom: 8px;
      text-transform: uppercase;
    }

    /* Testimonials */
    .quote-box {
      font-size: 14px;
      color: #cbd5e1;
      margin-bottom: 20px;
      line-height: 1.7;
    }
    .user-profile {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--surface-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      border: 1px solid var(--border);
    }
    .user-meta h4 {
      font-size: 15px;
      font-weight: 600;
    }
    .user-meta p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* Partner Logowall */
    .partner-wall {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      align-items: center;
      gap: 32px;
    }
    .partner-chip {
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 12px 28px;
      border-radius: 6px;
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
      transition: var(--transition);
    }
    .partner-chip:hover {
      border-color: var(--primary);
      color: var(--text);
    }

    /* Guarantee strip */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 30px;
      border-radius: var(--radius);
    }
    .guarantee-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }
    .guarantee-icon {
      font-size: 24px;
      line-height: 1;
      color: var(--primary);
    }
    .guarantee-item h4 {
      font-size: 15px;
      margin-bottom: 4px;
      color: var(--text);
    }
    .guarantee-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* Form Area */
    .contact-form-wrap {
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 40px;
      border-radius: var(--radius);
      max-width: 760px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .form-control {
      background: #090d12;
      border: 1px solid var(--border);
      border-radius: 6px;
      padding: 12px 16px;
      color: var(--text);
      font-size: 14px;
      font-family: inherit;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 8px var(--primary-glow);
    }

    /* Sticky Bottom Bar */
    .sticky-action-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 999;
      background: rgba(14, 17, 23, 0.95);
      border-top: 1px solid var(--border);
      backdrop-filter: blur(8px);
      padding: 14px 0;
    }
    .sticky-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .sticky-bar-text {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .badge-urgent {
      background: #ff4757;
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* Footer */
    footer {
      background: #07090c;
      border-top: 1px solid var(--border);
      padding: 60px 0 30px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      color: var(--text);
      font-size: 15px;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col ul a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    /* Mobile Hamburger */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border);
      color: var(--text);
      font-size: 20px;
      width: 40px;
      height: 40px;
      border-radius: 6px;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .workflow-steps { grid-template-columns: repeat(2, 1fr); }
      .guarantee-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      body { padding-bottom: 90px; }
      .top-bar { display: none; }
      .mobile-menu-btn { display: flex; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #11151c;
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
      }
      .nav-links.open { display: flex; }
      .hero-h1 { font-size: 32px; }
      .grid-3, .grid-2, .grid-4, .workflow-steps, .guarantee-grid { grid-template-columns: 1fr; }
      .story-card, .story-card.reverse { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .form-group.full { grid-column: span 1; }
      .sticky-bar-inner { flex-direction: column; gap: 10px; align-items: flex-start; }
      .sticky-action-bar .btn { width: 100%; }
      .footer-grid { grid-template-columns: 1fr; }
    }