@layer page {
  /* Consolidated page styles for key-materials.html */
  /* Page-specific styles for key-materials.html */
  .km-page {
    background: #f4f6f9;
  }
  .km-hero {
    background: linear-gradient(135deg, #0a192f, #1e3a5f 65%, #9a3412);
    color: #fff;
    padding: 72px 0 58px;
  }
  .km-wrap {
    width: min(calc(100% - 40px), 1040px);
    margin: auto;
  }
  .km-hero h1 {
    font-family: "Noto Serif JP", serif;
    font-size: clamp(1.85rem, 4vw, 3rem);
    margin: 0 0 14px;
  }
  .km-hero p {
    max-width: 840px;
    line-height: 1.95;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 700;
  }
  .km-list {
    counter-reset: item;
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 30px 0 86px;
  }
  .km-card {
    counter-increment: item;
    background: #fff;
    border: 1px solid #dbe4ee;
    border-radius: 18px;
    padding: 24px 26px;
    box-shadow: 0 10px 28px rgba(5, 17, 31, 0.06);
    position: relative;
  }
  .km-card::before {
    content: counter(item);
    position: absolute;
    left: -12px;
    top: 22px;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    background: #f97316;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
  }
  .km-card h2 {
    font-family: "Noto Serif JP", serif;
    color: #1e3a5f;
    margin: 0 0 10px;
    padding-left: 12px;
  }
  .km-card h3 {
    color: #1e3a5f;
    margin: 18px 0 6px;
  }
  .km-card p {
    line-height: 1.95;
    margin: 0 0 12px;
    color: #26364a;
  }
  .km-card ul {
    line-height: 1.9;
    color: #26364a;
  }
  .km-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
  }
  .km-links a {
    display: inline-flex;
    border: 1px solid #fed7aa;
    background: #fff7ed;
    color: #c2410c;
    border-radius: 999px;
    padding: 7px 13px;
    text-decoration: none;
    font-weight: 900;
    font-size: 0.86rem;
  }
  .km-note {
    background: #fff7ed;
    border: 1px solid #fed7aa;
    border-left: 5px solid #f97316;
    border-radius: 0 14px 14px 0;
    padding: 17px 19px;
    margin-top: 20px;
    line-height: 1.9;
  }
  .km-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
  }
  .km-nav a {
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 999px;
    padding: 9px 15px;
    text-decoration: none;
    font-weight: 900;
  }
  .km-intro {
    background: #fff;
    border: 1px solid #dbe4ee;
    border-radius: 18px;
    padding: 26px 28px;
    margin: 38px 0 0;
    box-shadow: 0 10px 28px rgba(5, 17, 31, 0.06);
  }
  .km-intro h2 {
    font-family: "Noto Serif JP", serif;
    color: #1e3a5f;
    margin: 0 0 12px;
  }
  .km-intro p,
  .km-intro li {
    line-height: 1.95;
    color: #26364a;
  }
  .km-table {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 14px;
  }
  .km-box {
    background: #f8fafc;
    border: 1px solid #dbe4ee;
    border-radius: 14px;
    padding: 16px;
  }
  .km-box strong {
    display: block;
    color: #1e3a5f;
    margin-bottom: 5px;
  }
  @media (max-width: 760px) {
    .km-card {
      padding: 22px 18px 22px 24px;
    }
    .km-card::before {
      left: -8px;
    }
    .km-table {
      grid-template-columns: 1fr;
    }
  }

  /* Page-specific styles for key-materials.html */
  .km-page {
    background: #fff;
  }
  .km-wrap {
    width: min(calc(100% - 40px), 920px);
  }
  .km-list {
    gap: 0;
    padding: 48px 0 86px;
    border-top: 2px solid #1e3a5f;
  }
  .km-card {
    padding: 30px 0;
    border: 0;
    border-bottom: 1px solid #dbe4ee;
    border-radius: 0;
    box-shadow: none;
  }
  .km-card::before {
    display: none;
  }
  .km-card h2 {
    padding-left: 0;
  }
  .km-links {
    gap: 8px 18px;
  }
  .km-links a {
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: #174f7d;
    text-decoration: underline;
  }
}