:root {
  --brand-500: #34a853;
  --brand-400: #49b966;
  --brand-100: #e2f3e7;
  --ink-900: #0b0b0b;
  --ink-700: #333333;
  --ink-500: #6b6b6b;
  --paper-50: #f7f7ef;
  --paper-100: #f1f1e6;
  --line-200: #e5e5dc;
  --card-border: rgba(52, 168, 83, 0.12);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-xs: 0 2px 12px rgba(0, 0, 0, 0.06);
  --header-height: 84px;
}

@media (max-width: 640px) {
  :root {
    --header-height: 72px;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink-900);
  background-color: var(--paper-100);
  line-height: 1.65;
  font-size: 16px;
}

#page-top {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

a {
  color: var(--brand-500);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--brand-400);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(52, 168, 83, 0.35);
  outline-offset: 2px;
}

img,
video {
  max-width: 100%;
  height: auto;
}

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 12;
  backdrop-filter: blur(6px);
  background-color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--line-200);
}

.site-header .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  gap: clamp(14px, 1vw + 10px, 22px);
  color: var(--brand-500);
  font-weight: 700;
  font-size: clamp(1.6rem, 1.2vw + 1.3rem, 1.95rem);
  line-height: 1;
  text-decoration: none;
}

.brand img {
  display: block;
  height: clamp(64px, 9vw, 88px);
  width: auto;
}

.brand__text {
  display: block;
  letter-spacing: 0.05em;
}

@media (max-width: 640px) {
  .brand {
    gap: clamp(10px, 3vw, 14px);
    font-size: clamp(1.3rem, 4vw + 0.9rem, 1.6rem);
    font-weight: 600;
  }

  .brand img {
    height: clamp(52px, 20vw, 68px);
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 15px;
}

.site-nav a {
  color: var(--ink-900);
  position: relative;
  padding: 6px 4px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: var(--brand-500);
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--ink-900);
  padding: 8px;
  cursor: pointer;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  display: block;
  width: 26px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-icon::before,
.menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-icon::before {
  top: -8px;
}

.menu-icon::after {
  top: 8px;
}

.menu-toggle[aria-expanded="true"] .menu-icon {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-icon::before {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-icon::after {
  transform: translateY(-8px) rotate(-45deg);
}

.hero {
  padding: 120px 0 80px;
  background: linear-gradient(180deg, #ffffff 0%, var(--paper-50) 100%);
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  align-items: center;
}

.hero__copy h1 {
  margin: 0 0 24px;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.25;
}

.hero__copy p {
  margin: 0 0 16px;
  color: var(--ink-700);
  max-width: 640px;
}

.hero__cta {
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  border: none;
  padding: 12px 24px;
  font-weight: 600;
  font-size: 15px;
  background: var(--brand-500);
  color: white;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(52, 168, 83, 0.28);
  color: #ffffff;
}

.button--outline {
  background: transparent;
  color: var(--brand-500);
  border: 1px solid rgba(52, 168, 83, 0.3);
  box-shadow: none;
}

.button--outline:hover,
.button--outline:focus-visible {
  background: rgba(52, 168, 83, 0.08);
}

.hero-card {
  padding: 32px;
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--card-border);
}

.hero-card h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

.hero-card ul {
  margin: 0;
  padding-left: 20px;
  color: var(--ink-700);
}

.section {
  padding: 96px 0;
}

.section--accent {
  background: radial-gradient(circle at top right, rgba(52, 168, 83, 0.12), transparent 55%);
}

.section--low {
  background: #ffffff;
}

.section__head {
  max-width: 640px;
  margin-bottom: 40px;
}

.section__head h2 {
  margin: 12px 0 16px;
  font-size: clamp(26px, 3vw, 32px);
}

.section__lead {
  margin: 0;
  color: var(--ink-700);
}

.policy-content {
  display: grid;
  gap: 32px;
}

.policy-content article {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-xs);
  color: var(--ink-700);
}

.policy-content h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 2.4vw, 24px);
  color: var(--ink-900);
}

.policy-content p {
  margin: 0;
}

.policy-content p + p {
  margin-top: 12px;
}

.policy-content ul {
  margin: 12px 0 0 20px;
  padding: 0;
}

.policy-content li + li {
  margin-top: 6px;
}

.policy-contact {
  margin: 16px 0 0;
  display: grid;
  gap: 16px;
}

.policy-contact div {
  display: grid;
  gap: 4px;
}

.policy-contact dt {
  margin: 0;
  font-weight: 600;
  color: var(--ink-900);
}

.policy-contact dd {
  margin: 0;
}

.policy-contact dd img {
  display: block;
  max-width: 100%;
  height: auto;
}

.legal-content {
  display: grid;
  gap: 32px;
}

.legal-content article {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-xs);
  color: var(--ink-700);
}

.legal-content h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 2.4vw, 24px);
  color: var(--ink-900);
}

.legal-content p {
  margin: 0;
}

.legal-content p + p {
  margin-top: 12px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-500);
  margin: 0;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.principles article {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--card-border);
}

.principles h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 20px;
}

.principles p {
  margin: 0;
  color: var(--ink-700);
}

.principles ul {
  margin: 0;
  padding-left: 20px;
  color: var(--ink-700);
}

.text-strong {
  font-weight: 600;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.service-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-xs);
}

.service-card h3 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: 20px;
}

.service-card p {
  margin: 0;
  color: var(--ink-700);
}

.service-flow {
  margin-top: 56px;
}

.service-flow h3 {
  margin: 0 0 24px;
  font-size: 24px;
}

.service-flow__steps {
  display: grid;
  gap: 20px;
}

.flow-step {
  position: relative;
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-xs);
}

.flow-step__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand-100);
  color: var(--brand-500);
  font-weight: 600;
  letter-spacing: 0.08em;
  font-size: 14px;
  margin-bottom: 16px;
}

.flow-step h4 {
  margin: 0 0 12px;
  font-size: 19px;
}

.flow-step p {
  margin: 0;
  color: var(--ink-700);
  font-size: 16px;
  line-height: 1.6;
}

.company-info {
  margin: 0;
  display: grid;
  gap: 20px;
}

.company-info__row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-xs);
}

.company-info__row dt {
  margin: 0;
  font-weight: 600;
  color: var(--ink-700);
}

.company-info__row dd {
  margin: 0;
  color: var(--ink-900);
  display: grid;
  gap: 6px;
  align-content: start;
}

.company-info__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.company-info__list li {
  margin: 0;
}

.company-private__frame {
  width: 100%;
  border: 0;
  overflow: hidden;
  background: transparent;
  display: block;
  min-height: 0;
  height: 0;
}




.contact {
  display: grid;
  gap: 32px;
}

.contact__content {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid rgba(11, 11, 11, 0.06);
  box-shadow: var(--shadow-sm);
}

.contact__form {
  margin-top: 32px;
  max-width: 760px;
  margin-inline: auto;
  position: relative;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.contact__form iframe {
  display: block;
  width: 100%;
  border: 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  background: #ffffff;
  min-height: 420px;
  transition: height 0.3s ease;
}

.site-footer {
  border-top: 1px solid var(--line-200);
  background: #ffffff;
  padding: 24px 0;
  color: var(--ink-500);
  font-size: 13px;
}

.footer__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer__links {
  display: flex;
  gap: 16px;
}

.footer__links a {
  color: var(--ink-500);
}

.footer__links a:hover,
.footer__links a:focus-visible {
  color: var(--brand-500);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.private-page {
  background: var(--paper-100);
  color: var(--ink-900);
}

.section--private {
  padding: 120px 0;
}

.private-page__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-700);
  margin-bottom: 16px;
}

.private-page__back::before {
  content: "←";
  font-size: 16px;
  line-height: 1;
  color: var(--brand-500);
}

.private-page__card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid rgba(11, 11, 11, 0.06);
  box-shadow: var(--shadow-sm);
}

.private-page__lead {
  margin: 12px 0 32px;
  color: var(--ink-700);
  font-size: 16px;
}

.private-info {
  margin: 0;
  display: grid;
  gap: 24px;
}

.private-info__row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 24px;
}

.private-info__row dt {
  margin: 0;
  font-weight: 600;
  color: var(--ink-700);
}

.private-info__row dd {
  margin: 0;
  font-size: 17px;
}

.private-page__notice {
  margin-top: 32px;
  color: var(--ink-500);
  font-size: 14px;
}

@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
    text-align: center;
  }

  .hero__panel {
    display: flex;
    justify-content: center;
  }

  .principles,
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .company-info__row {
    grid-template-columns: 140px minmax(0, 1fr);
  }

  .private-info__row {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .site-nav {
    position: absolute;
    inset: calc(var(--header-height)) 0 auto;
    padding: 20px 24px 24px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line-200);
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .site-nav[data-open="true"] {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero {
    padding: 96px 0 72px;
  }

  .section {
    padding: 72px 0;
  }

  .principles,
  .service-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .company-info__row {
    grid-template-columns: minmax(0, 1fr);
  }

  .section--private {
    padding: 96px 0;
  }

  .private-page__card {
    padding: 36px;
  }

  .private-info {
    gap: 20px;
  }

  .private-info__row {
    gap: 16px;
  }

  .private-page__lead {
    margin-bottom: 24px;
  }

  .footer__row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .shell {
    padding: 0 20px;
  }

  .hero-card,
  .contact__content {
    padding: 28px;
  }

  .private-page__card {
    padding: 28px;
  }

  .private-page__back {
    font-size: 13px;
  }

  .private-info__row {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-flow h3 {
    font-size: 20px;
  }

  .flow-step {
    padding: 24px;
  }

  .flow-step__index {
    width: 38px;
    height: 38px;
    margin-bottom: 12px;
  }

  .button {
    width: 100%;
  }
}

@media (max-width: 899px) {
  .service-flow__steps {
    gap: 40px;
  }

  .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 20px;
    background: rgba(52, 168, 83, 0.3);
    border-radius: 999px;
  }
}

@media (min-width: 900px) {
  .service-flow__steps {
    display: flex;
    gap: 28px;
  }

  .flow-step {
    flex: 1 1 0;
  }

  .flow-step::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -18px;
    width: 0;
    height: 0;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    border-left: 12px solid rgba(52, 168, 83, 0.4);
    transform: translateY(-50%);
  }

  .flow-step:last-child::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }
}