@charset "UTF-8";

:root {
  --bg: #f7f9fc;
  --panel: #fff;
  --soft: #f1f5f9;
  --border: #dbe4ef;
  --text: #1f2937;
  --muted: #64748b;
  --primary: #1d4ed8;
  --shadow: 0 18px 40px rgba(15, 23, 42, .08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.8;
}

a {
  color: inherit;
  text-decoration: none;
}

.case-page {
  padding: 48px 20px 72px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: .9rem;
}

.breadcrumb a {
  color: var(--primary);
}

.page-shell {
  padding: 32px 28px 40px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.page-header {
  margin-bottom: 26px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 2vw, 2.6rem);
  line-height: 1.4;
}

h2 {
  margin: 30px 0 14px;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--primary);
  font-size: 1.55rem;
}

h3 {
  margin: 24px 0 8px;
  font-size: 1.15rem;
}

h4 {
  margin: 20px 0 6px;
  font-size: 1rem;
}

.case-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.case-table th,
.case-table td {
  padding: 12px 14px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}

.case-table th {
  width: 18%;
  background: var(--soft);
}

.result-box ul {
  margin: 0 0 18px;
  padding-left: 1.4em;
}

.result-box p {
  margin: 0 0 16px;
}

.image-section {
  margin-top: 32px;
}

.image-section img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 12px auto;
  border: 1px solid var(--border);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.image-grid img {
  width: 100%;
  margin: 0;
}

.back-button {
  display: inline-flex;
  margin-top: 28px;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}

.back-button:hover {
  background: #163db0;
}

.back-button:visited {
  color: #fff;
}

@media (max-width: 700px) {
  .case-page {
    padding: 32px 16px 56px;
  }

  .page-shell {
    padding: 24px 16px 28px;
  }

  .case-table {
    display: block;
    overflow-x: auto;
    min-width: 620px;
  }

  .image-grid {
    grid-template-columns: 1fr;
  }
}