/* まずは色・余白・文字サイズを変更して学習してみましょう */
:root {
  --accent: #2c5678;
  --dark: #20364c;
  --pale: #f3f7fa;
  --soft: #d9e7ef;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: #353535;
  background: #fff;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.8;
}
a {
  color: inherit;
  text-decoration: none;
}
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
.container {
  width: min(100% - 40px, 1000px);
  margin: 0 auto;
}
.site-header {
  border-top: 6px solid var(--accent);
  background: #fff;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 84px;
  gap: 20px;
}
.logo {
  display: flex;
  flex-direction: column;
  color: var(--dark);
  line-height: 1.3;
}
.logo strong {
  font-size: 27px;
  letter-spacing: 0.12em;
}
.logo span {
  font-size: 12px;
  letter-spacing: 0.16em;
}
.header-note {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: #999;
}
.global-nav {
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
}
.nav-list {
  display: flex;
  list-style: none;
  margin: 0 auto;
  padding: 0;
}
.nav-list li {
  flex: 1;
  text-align: center;
}
.nav-list a {
  display: block;
  padding: 14px 10px;
  font-size: 13px;
  font-weight: bold;
  letter-spacing: 0.08em;
}
.nav-list a:hover,
.nav-list a[aria-current="page"] {
  background: var(--pale);
  color: var(--accent);
}
.hero {
  background: var(--pale);
  padding: 58px 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 54px;
}
.eyebrow {
  color: var(--accent);
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 0.22em;
}
.hero h1 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.5;
  color: var(--dark);
  margin: 16px 0 22px;
  letter-spacing: 0.03em;
}
.hero-lead {
  font-size: 15px;
  margin-bottom: 28px;
}
.button {
  display: inline-block;
  padding: 12px 27px;
  background: var(--accent);
  color: #fff;
  border-radius: 3px;
  font-size: 13px;
  font-weight: bold;
}
.button:hover {
  opacity: 0.85;
}
.button span {
  margin-left: 18px;
}
.photo-area {
  position: relative;
  min-height: 335px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 30px;
  text-align: center;
  background: linear-gradient(135deg, var(--soft), #fff);
  border: 1px solid #ffffff99;
}
.photo-deco {
  position: absolute;
  width: 230px;
  height: 230px;
  border: 1px solid #ffffffcc;
  border-radius: 50%;
}
.photo-area p {
  position: relative;
  font-size: 27px;
  letter-spacing: 0.3em;
  color: var(--dark);
  margin: 0;
}
.photo-area small {
  position: relative;
  max-width: 230px;
  color: #666;
  font-size: 11px;
}
.section {
  padding-top: 72px;
  padding-bottom: 80px;
}
.section-heading {
  text-align: center;
  margin-bottom: 30px;
}
.section-heading h2 {
  margin: 8px 0;
  color: var(--dark);
  font-size: 27px;
}
.intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 35px;
  font-size: 14px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  padding: 28px 24px;
  border-top: 4px solid var(--accent);
}
.feature-number {
  color: var(--accent);
  font-size: 12px;
  font-weight: bold;
}
.feature-card h3 {
  color: var(--dark);
  font-size: 18px;
  margin: 12px 0;
}
.feature-card p {
  font-size: 13px;
  margin: 0;
}
.bottom-cta {
  background: var(--soft);
  padding: 35px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.cta-inner h2 {
  font-size: 22px;
  color: var(--dark);
  margin: 5px 0;
}
.button-light {
  background: #fff;
  color: var(--dark);
  border: 1px solid var(--accent);
}
.page-heading {
  background: var(--pale);
  padding: 48px 0;
  text-align: center;
}
.page-heading h1 {
  color: var(--dark);
  font-size: 38px;
  letter-spacing: 0.12em;
  margin: 8px 0;
}
.page-heading p:last-child {
  font-size: 14px;
}
.table-scroll {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th,
td {
  padding: 18px 14px;
  border-bottom: 1px solid #ddd;
  text-align: left;
}
thead th {
  background: var(--pale);
  color: var(--dark);
}
tbody th {
  color: var(--dark);
}
.small-note {
  font-size: 12px;
  color: #777;
  margin: 20px 0 30px;
}
.info-box {
  background: var(--pale);
  padding: 30px 36px;
  margin-top: 35px;
}
.info-box h2 {
  font-size: 20px;
  color: var(--dark);
}
.info-box p {
  font-size: 14px;
}
.text-link,
.back-link a {
  color: var(--accent);
  font-weight: bold;
  font-size: 13px;
}
.info-list {
  margin: 0;
}
.info-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  border-bottom: 1px solid #ddd;
  padding: 16px 0;
  font-size: 14px;
}
.info-row:last-child {
  border-bottom: 0;
}
.info-row dt {
  font-weight: bold;
  color: var(--dark);
}
.info-row dd {
  margin: 0;
}
.back-link {
  margin-top: 36px;
}
.site-footer {
  background: var(--dark);
  color: #fff;
  padding: 34px 0;
}
.footer-inner {
  text-align: center;
}
.footer-logo {
  font-weight: bold;
  letter-spacing: 0.1em;
}
.site-footer p:not(.footer-logo),
.site-footer small {
  font-size: 11px;
  color: #ffffffb8;
}
@media (max-width: 700px) {
  .header-inner {
    min-height: 75px;
  }
  .logo strong {
    font-size: 22px;
  }
  .header-note {
    display: none;
  }
  .hero {
    padding: 38px 0;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .photo-area {
    min-height: 240px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  .section {
    padding-top: 50px;
    padding-bottom: 55px;
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .info-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .info-box {
    padding: 23px;
  }
}
/* ファーストビューの写真を大きく表示 */
.hero {
  padding: 0;
}

.hero-grid {
  width: 100%;
  max-width: none;
  gap: 0;
  grid-template-columns: 1fr 1fr;
}

.hero-text {
  padding: 70px 50px;
  max-width: 550px;
  margin-left: auto;
}

.photo-area {
  padding: 0;
  border: none;
  min-height: 450px;
}

.photo-area img {
  display: block;
  width: 100%;
  height: 450px;
  object-fit: cover;
}

/* スマートフォン */
@media (max-width: 700px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-text {
    padding: 45px 25px;
    margin: 0;
  }

  .photo-area {
    min-height: 260px;
  }

  .photo-area img {
    height: 260px;
  }
}