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

    body {
      font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, sans-serif;
      background: #0a0415;
      color: #f0eaff;
      line-height: 1.4;
      scroll-behavior: smooth;
    }

    /* background global image with dark purple veil */
    .bg-veil {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -2;
      overflow: hidden;
    }

    .bg-veil img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: brightness(0.55) saturate(1.1);
    }

    .overlay-gradient {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -1;
      background: linear-gradient(135deg, rgba(30, 12, 48, 0.82) 0%, rgba(98, 35, 158, 0.78) 100%);
      backdrop-filter: blur(2px);
    }

    /* container */
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
      position: relative;
    }

    /* header navigation */
    header {
      padding: 24px 0 16px;
      border-bottom: 1px solid rgba(200, 170, 255, 0.25);
      margin-bottom: 20px;
    }

    .nav-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }

    .logo {
      font-size: 1.9rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      background: linear-gradient(120deg, #f3e6ff, #c084fc);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      flex-wrap: wrap;
      list-style: none;
    }

    .nav-links a {
      color: #f0e6ff;
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      transition: 0.2s ease;
      padding: 6px 0;
      border-bottom: 2px solid transparent;
    }

    .nav-links a:hover {
      border-bottom-color: #c67bff;
      color: #fff;
    }

    /* sections general */
    section {
      padding: 70px 0 60px;
      scroll-margin-top: 90px;
    }

    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      background: linear-gradient(145deg, #e9d5ff, #bc7aff);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      margin-bottom: 2rem;
      letter-spacing: -0.3px;
    }

    /* banner */
    .banner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      padding: 40px 0 30px;
    }

    .banner h1 {
      font-size: 3.8rem;
      font-weight: 800;
      line-height: 1.2;
      background: linear-gradient(135deg, #ffffff, #d6a2ff);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      margin-bottom: 1.5rem;
      max-width: 900px;
    }

    .banner .tagline {
      font-size: 1.35rem;
      color: #d9c6ff;
      max-width: 700px;
      margin-bottom: 2rem;
      font-weight: 450;
    }

    .banner-highlight {
      display: inline-block;
      background: rgba(98, 35, 158, 0.5);
      backdrop-filter: blur(8px);
      border-radius: 60px;
      padding: 0.5rem 1.2rem;
      font-size: 0.9rem;
      font-weight: 500;
      border: 1px solid rgba(200, 140, 255, 0.6);
    }

    /* intro & features with side image */
    .split-layout {
      display: flex;
      flex-wrap: wrap;
      gap: 48px;
      align-items: center;
      justify-content: space-between;
    }

    .features-text {
      flex: 1.2;
      min-width: 260px;
    }

    .features-grid {
      display: flex;
      flex-direction: column;
      gap: 28px;
      margin-top: 20px;
    }

    .feature-block {
      background: rgba(20, 10, 35, 0.55);
      backdrop-filter: blur(12px);
      border-radius: 28px;
      padding: 1.3rem 1.7rem;
      border: 1px solid rgba(170, 110, 240, 0.35);
      transition: all 0.2s;
    }

    .feature-block h3 {
      font-size: 1.5rem;
      font-weight: 600;
      margin-bottom: 10px;
      color: #e2baff;
    }

    .feature-block p {
      color: #e2d4ff;
      line-height: 1.5;
      font-size: 1rem;
    }

    .app-preview {
      flex: 0.9;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .mockup-frame {
      background: linear-gradient(145deg, #2d1a46, #1a0e2c);
      border-radius: 48px;
      padding: 12px 10px 12px 10px;
      box-shadow: 0 25px 40px -12px rgba(0, 0, 0, 0.5);
      border: 1px solid rgba(200, 150, 255, 0.5);
    }

    .mockup-frame img {
      width: 100%;
      max-width: 280px;
      height: auto;
      display: block;
      border-radius: 32px;
      box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.3);
    }

    /* screenshot section optional */
    .screenshot-showcase {
      background: rgba(15, 8, 28, 0.45);
      backdrop-filter: blur(16px);
      border-radius: 56px;
      padding: 2rem 1.5rem;
      margin-top: 20px;
    }

    .screenshot-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 28px;
      margin-top: 30px;
    }

    .screen-card {
      background: rgba(0, 0, 0, 0.4);
      border-radius: 36px;
      padding: 8px;
      width: 200px;
      transition: transform 0.2s ease;
      border: 1px solid rgba(186, 120, 255, 0.5);
    }

    .screen-card img {
      width: 100%;
      border-radius: 28px;
      display: block;
      box-shadow: 0 12px 18px -8px black;
    }

    .screen-card:hover {
      transform: translateY(-5px);
    }

    /* footer */
    footer {
      border-top: 1px solid rgba(160, 110, 210, 0.4);
      padding: 48px 0 32px;
      margin-top: 20px;
    }

    .footer-content {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 18px;
      text-align: center;
    }

    .footer-nav {
      display: flex;
      gap: 2rem;
      flex-wrap: wrap;
      justify-content: center;
      margin-bottom: 12px;
    }

    .footer-nav a {
      color: #cfbef5;
      text-decoration: none;
      font-size: 0.9rem;
      transition: 0.2s;
    }

    .footer-nav a:hover {
      color: white;
    }

    .contact-info {
      font-size: 1rem;
      background: rgba(70, 30, 120, 0.5);
      padding: 8px 22px;
      border-radius: 60px;
      backdrop-filter: blur(4px);
    }

    .contact-info a {
      color: #e2bdff;
      text-decoration: none;
      font-weight: 500;
    }

    .copyright {
      font-size: 0.8rem;
      color: #b7a0df;
      letter-spacing: 0.3px;
    }

    /* responsive */
    @media (max-width: 800px) {
      .container {
        padding: 0 20px;
      }
      .banner h1 {
        font-size: 2.4rem;
      }
      .section-title {
        font-size: 2rem;
      }
      .split-layout {
        flex-direction: column-reverse;
      }
      .app-preview {
        margin-top: 20px;
      }
      .feature-block {
        padding: 1.1rem 1.3rem;
      }
      .mockup-frame img {
        max-width: 240px;
      }
      .screen-card {
        width: 160px;
      }
    }

    @media (max-width: 550px) {
      .nav-bar {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links {
        gap: 1.2rem;
        margin-top: 8px;
      }
      .banner h1 {
        font-size: 2rem;
      }
      .feature-block h3 {
        font-size: 1.3rem;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .screen-card {
        width: 140px;
      }
    }

    /* subtle animation */
    .feature-block, .screen-card {
      transition: all 0.25s ease;
    }

    .feature-block:hover {
      background: rgba(50, 28, 80, 0.7);
      border-color: #bd7eff;
    }

    a {
      cursor: pointer;
    }