:root {
  --color-main: #1b2d4f;
  --color-main-dark: #12203a;
  --color-accent: #c7a86b;
  --color-text: #222;
  --color-muted: #666;
  --color-line: #d9dde3;
  --color-bg: #ffffff;
  --color-bg-light: #f7f8fa;
  --container: 1180px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Meiryo", Arial, sans-serif;
  line-height: 1.8;
  font-size: 15px;
}

img {
  display: block;
  max-width: 100%;
}

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

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.section {
  padding: 80px 0;
}

.bg-light {
  background: var(--color-bg-light);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(8px);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-link {
  display: flex;
  flex-direction: column;
}

.brand-en {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-main);
}

.brand-ja {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 2px;
}

.site-nav {
  display: flex;
  gap: 28px;
  align-items: center;
  font-size: 14px;
}

.site-nav a {
  position: relative;
  padding: 4px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.25s ease;
}

.site-nav a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  padding: 10px 14px;
  border: 1px solid var(--color-line);
  background: #fff;
  cursor: pointer;
  font-size: 13px;
}

.hero {
  background: linear-gradient(135deg, #f9fbff 0%, #eef3f9 100%);
  padding: 70px 0 90px;
  border-bottom: 1px solid var(--color-line);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero-subtitle {
  display: inline-block;
  margin: 0 0 18px;
  padding: 6px 14px;
  background: #fff;
  border: 1px solid var(--color-line);
  color: var(--color-main);
  font-size: 13px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.3;
  color: var(--color-main);
  letter-spacing: 0.03em;
}

.hero-text {
  margin: 24px 0 0;
  color: #4a5568;
  font-size: 16px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.hero-visual img {
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  font-size: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: 0.25s ease;
}

.btn-primary {
  background: var(--color-main);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-main-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--color-main);
  border-color: var(--color-main);
}

.btn-secondary:hover {
  background: #f3f6fa;
}

.full-width {
  width: 100%;
}

.section-heading {
  margin-bottom: 30px;
  text-align: center;
}

.section-heading.left {
  text-align: left;
}

.heading-en {
  display: inline-block;
  color: var(--color-accent);
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
}

.section-heading h2 {
  margin: 10px 0 0;
  font-size: 32px;
  color: var(--color-main);
  letter-spacing: 0.05em;
}

.message-box {
  background: #fff;
  border: 1px solid var(--color-line);
  padding: 34px;
  box-shadow: var(--shadow);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-line);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.service-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.service-card-body {
  padding: 24px;
}

.service-card h3 {
  margin: 0;
  font-size: 22px;
  color: var(--color-main);
}

.service-card p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.strength-item {
  background: #fff;
  border: 1px solid var(--color-line);
  padding: 28px;
  box-shadow: var(--shadow);
}

.strength-item h3 {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--color-main);
}

.profile-table-wrap {
  background: #fff;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.profile-table {
  width: 100%;
  border-collapse: collapse;
}

.profile-table th,
.profile-table td {
  padding: 18px 22px;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.profile-table th {
  width: 220px;
  background: #f5f7fa;
  color: var(--color-main);
  text-align: left;
  font-weight: 700;
}

.note {
  margin-top: 12px;
  color: #888;
  font-size: 13px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
}

.contact-info {
  background: #fff;
  border: 1px solid var(--color-line);
  padding: 30px;
  box-shadow: var(--shadow);
}

.contact-list {
  margin-top: 20px;
  display: grid;
  gap: 10px;
}

.contact-form-wrap {
  background: #fff;
  border: 1px solid var(--color-line);
  padding: 30px;
  box-shadow: var(--shadow);
}

.contact-form {
  display: grid;
  gap: 18px;
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row label {
  font-weight: 700;
  color: var(--color-main);
  font-size: 14px;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid #cfd6de;
  background: #fff;
  font-size: 15px;
  font-family: inherit;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-main);
}

.required {
  margin-left: 8px;
  font-size: 12px;
  color: #b42318;
}

.checkbox-row {
  margin-top: -2px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 400;
  color: var(--color-text);
}

.form-message {
  margin: 0;
  font-size: 14px;
  color: #1f6f43;
}

.site-footer {
  background: var(--color-main);
  color: #fff;
}

.footer-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-brand {
  font-weight: 700;
}

.footer-copy {
  font-size: 13px;
  opacity: 0.9;
}

@media (max-width: 980px) {
  .hero-inner,
  .contact-layout,
  .service-grid,
  .strength-grid {
    grid-template-columns: 1fr;
  }

  .profile-table th {
    width: 180px;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 82px;
    left: 20px;
    right: 20px;
    background: #fff;
    border: 1px solid var(--color-line);
    flex-direction: column;
    align-items: flex-start;
    padding: 18px;
    gap: 14px;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: flex;
  }

  .section {
    padding: 64px 0;
  }

  .hero {
    padding: 56px 0 70px;
  }

  .profile-table,
  .profile-table tbody,
  .profile-table tr,
  .profile-table th,
  .profile-table td {
    display: block;
    width: 100%;
  }

  .profile-table th,
  .profile-table td {
    padding: 14px 16px;
  }

  .footer-inner {
    padding: 18px 0;
    min-height: auto;
    flex-direction: column;
    align-items: flex-start;
  }
}