:root {
      --bg: #ffffff;
      --text: #1d1d1f;
      --text-secondary: #6e6e73;
      --border: #d2d2d7;
      --section-bg: #ffffff;
      --transition-ease: cubic-bezier(0.23, 1, 0.32, 1);
    }

    @media (prefers-color-scheme: dark) {
      :root {
        --bg: #000000;
        --text: #f5f5f7;
        --text-secondary: #aeaeb2;
        --border: #3a3a3c;
        --section-bg: #000000;
      }
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
      background-color: var(--bg);
      color: var(--text);
      overflow-x: hidden;
    }

    .hero {
      text-align: center;
      padding: 120px 24px 80px;
    }

    .hero h1 {
      font-size: clamp(2.5rem, 8vw, 4.2rem);
      font-weight: 300;
      letter-spacing: -0.03em;
      line-height: 1.05;
      max-width: 800px;
      margin: 0 auto;
      opacity: 0;
      transform: translateY(20px);
      animation: heroFadeIn 1.2s var(--transition-ease) forwards;
    }

    .content-section {
      max-width: 900px;
      margin: 0 auto;
      padding: 0 24px 100px;
    }

    .block {
      padding: 80px 0;
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.8s var(--transition-ease), transform 0.8s var(--transition-ease);
    }

    .block.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .block:not(:last-child) {
      border-bottom: 1px solid var(--border);
    }

    .block h2 {
      font-size: clamp(1.8rem, 5vw, 2.4rem);
      font-weight: 600;
      margin-bottom: 32px;
      letter-spacing: -0.02em;
      color: var(--text);
    }

    .block p {
      font-size: 1.125rem;
      line-height: 1.65;
      color: var(--text-secondary);
      margin-bottom: 24px;
      max-width: 700px;
    }

    .quote {
      position: relative;
      font-style: italic;
      padding-left: 24px;
      margin-top: 32px;
      color: var(--text);
      font-size: 1.25rem;
      line-height: 1.5;
    }

    .quote::before {
      content: "“";
      position: absolute;
      left: 0;
      top: -8px;
      font-size: 3rem;
      line-height: 1;
      color: var(--text-secondary);
      opacity: 0.6;
    }

    .closing {
      text-align: center;
      margin-top: 40px;
      font-size: 1.375rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    @keyframes heroFadeIn {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @media (max-width: 768px) {
      .hero {
        padding: 90px 20px 60px;
      }
      .content-section {
        padding-bottom: 70px;
      }
      .block {
        padding: 60px 0;
      }
    }