:root {
    --navy:      #0d2d5e;
    --navy-mid:  #1a4f9c;
    --navy-light:#2563c4;
    --bg:        #f4f6fb;
    --surface:   #ffffff;
    --text:      #0d1a2e;
    --muted:     #5a6a82;
    --border:    rgba(13,45,94,.1);
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 16px;
    line-height: 1.75;
  }

  h1, h2, h3 { font-family: 'Plus Jakarta Sans', sans-serif; }

  /* HEADER */
  header {
    background: var(--navy);
    padding: 0 2.5rem;
    height: 66px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .logo-link {
    text-decoration: none;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
    color: #ffffff;
    letter-spacing: -.02em;
  }
  .back-link {
    font-size: .82rem;
    color: rgba(255,255,255,.6);
    text-decoration: none;
    transition: color .2s;
  }
  .back-link:hover { color: #ffffff; }

  /* HERO */
  .hero {
    background: var(--navy);
    padding: 3.5rem 2.5rem 3rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
  }
  .hero-inner { max-width: 760px; margin: 0 auto; }
  .hero-label {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: #a8c4f0;
    margin-bottom: .8rem;
  }
  .hero h1 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -.035em;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: .8rem;
  }
  .hero-meta {
    font-size: .85rem;
    color: rgba(255,255,255,.45);
  }

  /* CONTENT */
  .content {
    max-width: 760px;
    margin: 0 auto;
    padding: 3.5rem 2.5rem 5rem;
  }

  /* INTRO BOX */
  .intro-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--navy-mid);
    border-radius: 0 12px 12px 0;
    padding: 1.4rem 1.8rem;
    margin-bottom: 3rem;
    font-size: .95rem;
    color: var(--muted);
    line-height: 1.75;
  }

  /* SECTIONS */
  .section { margin-bottom: 2.8rem; }

  .section-num {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--navy-light);
    margin-bottom: .5rem;
    display: flex;
    align-items: center;
    gap: .5rem;
  }
  .section-num::before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 2px;
    background: var(--navy-light);
    border-radius: 2px;
  }

  h2 {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -.02em;
    color: var(--navy);
    margin-bottom: 1rem;
    line-height: 1.3;
  }

  p {
    font-size: .95rem;
    color: var(--muted);
    margin-bottom: .9rem;
    line-height: 1.8;
  }

  ul {
    list-style: none;
    margin: .5rem 0 1rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
  }
  ul li {
    font-size: .93rem;
    color: var(--muted);
    padding-left: 1.4rem;
    position: relative;
    line-height: 1.7;
  }
  ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--navy-light);
    font-weight: 600;
    font-size: .85rem;
  }

  /* HIGHLIGHT BOX */
  .highlight {
    background: #eef3fc;
    border: 1px solid rgba(37,99,196,.15);
    border-radius: 12px;
    padding: 1.2rem 1.6rem;
    margin: 1rem 0 1.2rem;
  }
  .highlight p {
    margin: 0;
    font-size: .9rem;
    color: var(--navy-mid);
    font-weight: 500;
  }

  /* DIVIDER */
  .divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5rem 0;
  }

  /* CONTACT BOX */
  .contact-box {
    background: var(--navy);
    border-radius: 16px;
    padding: 2rem 2.2rem;
    margin-top: 3rem;
  }
  .contact-box h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: .6rem;
  }
  .contact-box p {
    color: rgba(255,255,255,.55);
    font-size: .88rem;
    margin-bottom: .4rem;
  }
  .contact-box a {
    color: #a8c4f0;
    text-decoration: none;
  }
  .contact-box a:hover { text-decoration: underline; }

  /* FOOTER */
  footer {
    background: #090f1c;
    text-align: center;
    padding: 1.6rem 2rem;
    font-size: .75rem;
    color: rgba(255,255,255,.22);
  }

  @media (max-width: 600px) {
    header { padding: 0 1.2rem; }
    .hero { padding: 2.5rem 1.2rem 2rem; }
    .content { padding: 2.5rem 1.2rem 4rem; }
  }