*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
           color: #1a202c; background: #f7f8fa; line-height: 1.7; }
    .container { max-width: 780px; margin: 0 auto; padding: 40px 24px 80px; }
    header { background: #1e3a5f; color: #fff; padding: 16px 0; margin-bottom: 40px; }
    header .inner { max-width: 780px; margin: 0 auto; padding: 0 24px;
                    display: flex; align-items: center; justify-content: space-between; }
    header a { color: #fff; text-decoration: none; font-weight: 700; font-size: 18px; }
    header nav a { font-size: 13px; color: rgba(255,255,255,.7); margin-left: 20px; }
    h1 { font-size: 28px; font-weight: 800; color: #1e3a5f; margin-bottom: 8px; }
    .subtitle { color: #6b7280; font-size: 14px; margin-bottom: 40px; }
    h2 { font-size: 17px; font-weight: 700; color: #1e3a5f; margin: 32px 0 12px;
         padding-bottom: 6px; border-bottom: 2px solid #e5e7eb; }
    p { margin-bottom: 14px; font-size: 15px; color: #374151; }
    ul { margin: 12px 0 14px 20px; }
    li { margin-bottom: 6px; font-size: 15px; color: #374151; }
    .notice { background: #fffbeb; border: 1px solid #fde68a; border-radius: 8px;
              padding: 14px 18px; margin: 24px 0; font-size: 14px; color: #78350f; }
    footer { background: #1e3a5f; color: rgba(255,255,255,.5); text-align: center;
             padding: 20px; font-size: 12px; margin-top: 60px; }
    footer a { color: rgba(255,255,255,.6); }