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

    body {
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      background-color: #f9fafc;
      color: #1e1e2f;
      line-height: 1.6;
      font-weight: 400;
      padding: 0 1rem;
    }

    img {
      max-width: 100%;
      display: block;
    }

    /* ---------- TYPOGRAPHY & LINKS ---------- */
    h1, h2, h3 {
      line-height: 1.2;
      font-weight: 600;
      letter-spacing: -0.02em;
      color: #0b0b1a;
    }

    h1 {
      font-size: clamp(2.4rem, 5vw, 3.8rem);
      font-weight: 700;
      letter-spacing: -0.03em;
    }

    h2 {
      font-size: clamp(1.9rem, 4vw, 2.8rem);
      margin-bottom: 1.5rem;
      font-weight: 600;
    }

    h3 {
      font-size: 1.35rem;
      margin-bottom: 0.75rem;
      font-weight: 600;
    }

    p {
      color: #2d2d44;
      margin-bottom: 1rem;
    }

    a {
      color: #1a5cff;
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s;
    }

    a:hover {
      color: #0f3bb0;
      text-decoration: underline;
    }

    /* ---------- LAYOUT CONTAINERS ---------- */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 3rem 1.5rem;
    }

    /* ---------- HEADER ---------- */
    header {
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-bottom: 1px solid #e9e9f0;
      padding: 1rem 1.5rem;
      position: sticky;
      top: 0;
      z-index: 10;
      display: flex;
      justify-content: space-between;
      align-items: center;
      max-width: 1200px;
      margin: 0 auto;
    }

    .logo {
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: -0.02em;
      color: #0b0b1a;
      background: linear-gradient(135deg, #1a5cff, #8b5cf6);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .header-tagline {
      font-size: 0.9rem;
      font-weight: 400;
      color: #4b4b6c;
      display: none;
    }

    @media (min-width: 640px) {
      .header-tagline {
        display: block;
      }
    }

    /* ---------- HERO ---------- */
    .hero {
      display: flex;
      flex-direction: column;
      gap: 2rem;
      align-items: center;
      text-align: center;
      padding: 2rem 1.5rem 1rem;
      max-width: 1100px;
      margin: 0 auto;
    }

    .hero-content {
      max-width: 800px;
    }

    .hero h1 {
      margin-bottom: 1.2rem;
      background: linear-gradient(135deg, #0b0b1a 30%, #1a5cff 80%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero p {
      font-size: 1.25rem;
      color: #3a3a5a;
      margin-bottom: 2rem;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-badge {
      display: inline-block;
      background: #eef3ff;
      color: #1a5cff;
      padding: 0.4rem 1rem;
      border-radius: 40px;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.02em;
      text-transform: uppercase;
      margin-bottom: 1.5rem;
      border: 1px solid #cddfff;
    }

    /* ---------- BUTTONS ---------- */
    .btn {
      display: inline-block;
      background: #1a5cff;
      color: white;
      padding: 0.9rem 2.2rem;
      border-radius: 60px;
      font-weight: 600;
      font-size: 1rem;
      border: none;
      transition: all 0.2s ease;
      box-shadow: 0 8px 20px rgba(26, 92, 255, 0.2);
      text-decoration: none;
      cursor: pointer;
    }

    .btn:hover {
      background: #0f3bb0;
      color: white;
      text-decoration: none;
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(26, 92, 255, 0.3);
    }

    .btn-outline {
      background: transparent;
      color: #1a5cff;
      border: 1.5px solid #1a5cff;
      box-shadow: none;
      margin-left: 0.75rem;
    }

    .btn-outline:hover {
      background: #f0f5ff;
      color: #0f3bb0;
      transform: translateY(-2px);
      box-shadow: 0 6px 12px rgba(26, 92, 255, 0.1);
    }

    /* ---------- SECTIONS ---------- */
    section {
      margin-bottom: 2rem;
    }

    .section-title {
      text-align: center;
      margin-bottom: 3rem;
    }

    .section-title h2 {
      margin-bottom: 0.75rem;
    }

    .section-title p {
      color: #4b4b6c;
      font-size: 1.15rem;
      max-width: 650px;
      margin: 0 auto;
    }

    /* ---------- CARD GRID ---------- */
    .card-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.8rem;
    }

    @media (min-width: 640px) {
      .card-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (min-width: 960px) {
      .card-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    .card {
      background: white;
      border-radius: 28px;
      padding: 2rem 1.8rem;
      box-shadow: 0 12px 28px -8px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.01);
      transition: transform 0.2s ease, box-shadow 0.25s ease;
      border: 1px solid #f0f0f8;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 24px 36px -12px rgba(26, 92, 255, 0.12), 0 0 0 1px #cddfff;
    }

    .card-icon {
      font-size: 2.2rem;
      margin-bottom: 1rem;
      line-height: 1;
    }

    .card h3 {
      margin-bottom: 1rem;
      font-size: 1.4rem;
    }

    .card p:last-child {
      margin-bottom: 0;
    }

    /* ---------- HIGHLIGHT (two column) ---------- */
    .highlight-panel {
      background: white;
      border-radius: 36px;
      padding: 2.5rem;
      box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.08);
      border: 1px solid #eaeef9;
      display: grid;
      grid-template-columns: 1fr;
      gap: 2.5rem;
      align-items: center;
    }

    @media (min-width: 900px) {
      .highlight-panel {
        grid-template-columns: 1fr 1fr;
        padding: 3rem;
      }
    }

    .highlight-text h3 {
      font-size: 1.9rem;
      font-weight: 600;
      margin-bottom: 1.2rem;
      line-height: 1.2;
    }

    .highlight-text ul {
      list-style: none;
      margin-top: 1.2rem;
    }

    .highlight-text li {
      margin-bottom: 0.9rem;
      display: flex;
      align-items: flex-start;
      gap: 0.6rem;
      color: #2d2d44;
    }

    .highlight-text li::before {
      content: "✓";
      color: #1a5cff;
      font-weight: 700;
      font-size: 1.2rem;
      line-height: 1.4;
    }

    /* ---------- FAQ ---------- */
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: white;
      border-radius: 24px;
      padding: 1.8rem 2rem;
      margin-bottom: 1rem;
      border: 1px solid #eaeef9;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .faq-item:hover {
      border-color: #b8ccff;
      box-shadow: 0 8px 20px -6px rgba(26, 92, 255, 0.08);
    }

    .faq-item h3 {
      font-size: 1.25rem;
      margin-bottom: 0.75rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
      cursor: default;
    }

    .faq-item h3::after {
      content: "＋";
      font-weight: 400;
      color: #1a5cff;
      font-size: 1.6rem;
      line-height: 1;
      opacity: 0.6;
    }

    .faq-item p {
      margin-bottom: 0;
      color: #3a3a5a;
      font-size: 0.98rem;
    }

    /* ---------- FOOTER ---------- */
    footer {
      text-align: center;
      padding: 2rem 1.5rem 3rem;
      border-top: 1px solid #e9e9f0;
      margin-top: 2rem;
      color: #4b4b6c;
      font-size: 0.9rem;
    }

    footer p {
      color: #5e5e7a;
      margin-bottom: 0.5rem;
    }

    /* ---------- UTILITIES ---------- */
    .text-center {
      text-align: center;
    }

    .mt-4 {
      margin-top: 2rem;
    }

    .mb-2 {
      margin-bottom: 1.5rem;
    }

    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      border: 0;
    }

    /* subtle background shapes (pure CSS) */
    .bg-shape {
      position: fixed;
      z-index: -1;
      border-radius: 50%;
      filter: blur(80px);
      opacity: 0.25;
      pointer-events: none;
    }

    .bg-shape-1 {
      width: 400px;
      height: 400px;
      background: #a5c9ff;
      top: -100px;
      right: -100px;
    }

    .bg-shape-2 {
      width: 500px;
      height: 500px;
      background: #d9c9ff;
      bottom: -150px;
      left: -150px;
    }