:root {
  --c-primary: #b28a67;
  --c-primary-light: #c9a78a;
  --c-primary-dark: #8e6847;
  --c-white: #ffffff;
  --c-bg-body: #faf8f5;
  --c-bg-light: #f5f3ef;
  --c-bg-beige: #f0ede8;
  --c-text-main: #2a2520;
  --c-text-sub: #5a5550;
  --c-text-light: #8a8580;
  --c-border: #e8e6e3;
  --c-border-dark: #d0cdc9;
  --c-accent: #5c6a6e;
  --c-accent-hover: #465256;
  --font-main: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --width-container: 1100px;
  --header-height: 70px;
  --header-height-pc: 80px;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 20px;
  --transition: 0.28s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-main);
  background: var(--c-bg-body);
  -webkit-text-size-adjust: 100%;
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

summary {
  cursor: pointer;
}

summary::-webkit-details-marker {
  display: none;
}

:focus-visible {
  outline: 3px solid rgba(178, 138, 103, 0.35);
  outline-offset: 3px;
}

.u-skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 300;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--c-text-main);
  color: var(--c-white);
}

.u-skip-link:focus {
  top: 12px;
}

.shell {
  width: min(100%, var(--width-container));
  margin: 0 auto;
  padding: 0 20px;
}

.shell--narrow {
  width: min(100%, 900px);
}

.section {
  padding: 64px 0;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.section--muted {
  background: linear-gradient(180deg, rgba(245, 243, 240, 0.7) 0%, rgba(250, 250, 248, 0.95) 100%);
}

.section--beige {
  background:
    linear-gradient(135deg, rgba(245, 243, 240, 0.9), rgba(255, 255, 255, 0.95)),
    var(--c-bg-beige);
}

.eyebrow {
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-primary);
}

.eyebrow--light {
  color: rgba(255, 255, 255, 0.8);
}

.section-heading {
  margin-bottom: 32px;
  text-align: center;
}

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

.section-heading h2 {
  font-size: 32px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.section-heading p:last-child {
  margin-top: 14px;
  color: var(--c-text-sub);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 168px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  line-height: 1.4;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.button--primary {
  background: var(--c-primary);
  color: var(--c-white);
}

.button--primary:hover {
  background: var(--c-primary-dark);
}

.button--secondary {
  border-color: var(--c-border-dark);
  background: rgba(255, 255, 255, 0.75);
  color: var(--c-text-main);
}

.button--secondary:hover {
  border-color: var(--c-primary);
  color: var(--c-primary-dark);
}

.button--light {
  background: var(--c-white);
  color: var(--c-primary-dark);
}

.button--light:hover {
  background: #f7f4f1;
}

.button--large {
  padding: 16px 28px;
  min-width: 200px;
}

.c-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 168px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  line-height: 1.4;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

.c-button--primary {
  background: var(--c-primary);
  color: var(--c-white);
}

.c-button--primary:hover {
  background: var(--c-primary-dark);
}

.c-button--secondary {
  border-color: var(--c-border-dark);
  background: rgba(255, 255, 255, 0.75);
  color: var(--c-text-main);
}

.c-button--secondary:hover {
  border-color: var(--c-primary);
  color: var(--c-primary-dark);
}

.c-button--lg {
  padding: 16px 28px;
  min-width: 200px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-weight: 700;
  color: var(--c-primary-dark);
}

.text-link::after {
  content: ">";
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  min-height: var(--header-height);
  border-bottom: 1px solid rgba(220, 213, 205, 0.8);
  background: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-height);
  width: min(100%, var(--width-container));
  margin: 0 auto;
  padding: 10px 20px;
}

.site-header__brand {
  flex-shrink: 0;
}

.site-header__brand img {
  height: 48px;
  width: auto;
  object-fit: contain;
  border-radius: 8px;
}

.site-nav {
  position: fixed;
  inset: var(--header-height) 0 auto 0;
  display: grid;
  gap: 28px;
  padding: 24px 20px 32px;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--c-border);
  transform: translateY(-120%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition), opacity var(--transition);
}

.site-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.site-nav__list {
  display: grid;
  gap: 8px;
}

.site-nav__list a {
  display: block;
  padding: 12px 0;
  font-weight: 700;
}

.site-nav__cta {
  width: 100%;
}

.menu-toggle {
  position: relative;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.menu-toggle span {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--c-text-main);
  transition: transform var(--transition), opacity var(--transition), top var(--transition);
}

.menu-toggle span:nth-child(1) {
  top: 14px;
}

.menu-toggle span:nth-child(2) {
  top: 21px;
}

.menu-toggle span:nth-child(3) {
  top: 28px;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  top: 21px;
  transform: rotate(-45deg);
}

.nav-open {
  overflow: hidden;
}

.hero {
  padding: 24px 0 64px;
  background:
    linear-gradient(135deg, rgba(178, 138, 103, 0.10) 0%, transparent 45%),
    linear-gradient(225deg, rgba(92, 106, 110, 0.07) 0%, transparent 45%),
    var(--c-bg-body);
}

.hero__inner {
  display: grid;
  gap: 24px;
  min-height: calc(100svh - var(--header-height));
  align-items: center;
}

.hero__copy,
.hero__panel {
  padding: 32px 30px;
  border: 1px solid rgba(220, 213, 205, 0.8);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(8px);
}

.hero h1 {
  font-size: clamp(32px, 8vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.hero__lead {
  margin-top: 18px;
  font-size: 16px;
  color: var(--c-text-sub);
}

.hero__actions {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.hero__actions .button {
  width: 100%;
}

.hero__panel {
  background:
    linear-gradient(180deg, rgba(245, 243, 240, 0.9) 0%, rgba(255, 255, 255, 0.94) 100%);
}

.hero__panel-label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-primary-dark);
}

.hero__panel-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
}

.hero__panel-list li {
  position: relative;
  padding: 4px 0 4px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text-main);
}

.hero__panel-list li + li {
  border-top: 1px dashed var(--c-border);
}

.hero__panel-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 1.05em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-primary);
  transform: translateY(-50%);
}



.card-grid,
.feature-list,
.link-cards,
.news-placeholder {
  display: grid;
  gap: 16px;
}

.info-card,
.feature-item,
.link-card,
.news-placeholder article,
.profile,
.partnership,
.faq-item,
.site-footer__top {
  border: 1px solid rgba(232, 230, 227, 0.95);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
}

.info-card,
.feature-item,
.link-card,
.news-placeholder article {
  padding: 24px;
}

/* Top page only: S2 サービス概要カードをリンク化するための最小補助 */
a.info-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

a.info-card:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 4px;
}

.info-card__index,
.feature-item__number {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-primary);
}

.feature-item__number {
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--c-primary-dark);
  font-family: "Noto Sans JP", sans-serif;
}

.info-card h3,
.feature-item h3,
.link-card h3,
.news-placeholder h3,
.faq-item summary,
.profile h2 {
  font-size: 20px;
  line-height: 1.4;
}

.info-card p,
.feature-item p,
.link-card p,
.news-placeholder p,
.profile p,
.partnership p,
.faq-item p {
  margin-top: 12px;
  color: var(--c-text-sub);
}

.feature-item {
  position: relative;
  overflow: hidden;
}

.feature-item::after {
  content: "";
  position: absolute;
  right: -20px;
  bottom: -24px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: rgba(178, 138, 103, 0.08);
}

.link-card {
  transition: border-color var(--transition), transform var(--transition);
  background: linear-gradient(180deg, rgba(245, 240, 233, 0.55) 0%, rgba(255, 255, 255, 0.92) 100%);
}

.link-card span {
  display: inline-flex;
  margin-top: 18px;
  font-weight: 700;
  color: var(--c-primary-dark);
}

.link-card:hover {
  transform: translateY(-2px);
  border-color: var(--c-primary-light);
}

.profile {
  display: grid;
  gap: 24px;
  padding: 24px;
}

.profile__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--c-bg-light);
}

.profile__visual picture {
  display: block;
  width: 100%;
}

.profile__visual img {
  width: 100%;
  height: auto;
  display: block;
  object-position: center 15%;
}

.profile__lead {
  font-size: 16px;
  color: var(--c-text-main);
}

.partnership {
  padding: 24px;
}

.partnership__grid {
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip-list li {
  padding: 9px 14px;
  border-radius: 999px;
  background: var(--c-bg-beige);
  color: var(--c-text-main);
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 0;
  overflow: hidden;
}

.faq-item summary {
  position: relative;
  display: block;
  padding: 20px 56px 20px 20px;
  font-weight: 700;
}

.faq-item summary::after,
.faq-item summary::before {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 16px;
  height: 2px;
  background: var(--c-primary-dark);
  transform: translateY(-50%);
  transition: transform var(--transition);
}

.faq-item summary::before {
  transform: translateY(-50%) rotate(90deg);
}

.faq-item[open] summary::before {
  transform: translateY(-50%) rotate(0deg);
}

.faq-item p {
  margin: 0;
  padding: 0 20px 20px;
}

.cta-band {
  padding: 0;
  background:
    linear-gradient(135deg, var(--c-primary-dark), var(--c-primary));
  color: var(--c-white);
}

.cta-band__inner {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: 48px 20px;
}

.cta-band h2 {
  font-size: 32px;
  line-height: 1.3;
}

.cta-band p:last-child {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.82);
}

.news-placeholder article {
  min-height: 100%;
}

.news-placeholder__label {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--c-bg-beige);
  color: var(--c-primary-dark);
  font-size: 12px;
  font-weight: 700;
}

.site-footer {
  padding: 64px 0 24px;
  background: #f7f4f1;
}

.site-footer__top {
  display: grid;
  gap: 24px;
  padding: 24px;
}

.site-footer__brand img {
  height: 64px;
  width: auto;
  object-fit: contain;
  border-radius: 10px;
}

.site-footer__name {
  margin-top: 16px;
  font-weight: 700;
  font-size: 18px;
}

.site-footer__copy {
  margin-top: 8px;
  color: var(--c-text-sub);
}

.site-footer__nav {
  display: grid;
  gap: 12px;
}

.site-footer__nav a {
  color: var(--c-text-sub);
  font-weight: 700;
}

.site-footer__cta p {
  margin-bottom: 14px;
  color: var(--c-text-sub);
}

.site-footer__bottom {
  padding-top: 24px;
  text-align: center;
}

.site-footer__slogan {
  font-weight: 700;
  color: var(--c-primary-dark);
}

.site-footer__copyright {
  margin-top: 8px;
  font-size: 12px;
  color: var(--c-text-light);
}

.js-fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 768px) {
  body {
    font-size: 16px;
  }

  .shell {
    padding: 0 40px;
  }

  .section {
    padding: 88px 0;
    scroll-margin-top: calc(var(--header-height-pc) + 20px);
  }

  .section-heading {
    margin-bottom: 48px;
  }

  .section-heading h2 {
    font-size: 40px;
  }

  .site-header {
    min-height: var(--header-height-pc);
  }

  .site-header__inner {
    min-height: var(--header-height-pc);
  }

  .site-header__brand img {
    height: 56px;
    width: auto;
  }

  .site-nav {
    position: static;
    inset: auto;
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 0;
    border: 0;
    background: transparent;
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav__list {
    display: flex;
    align-items: center;
    gap: 18px;
  }

  .site-nav__list a {
    padding: 12px 0;
  }

  .site-nav__cta {
    width: auto;
  }

  .menu-toggle {
    display: none;
  }

  .hero {
    padding: 32px 0 88px;
  }

  .hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
    gap: 28px;
    min-height: calc(100svh - var(--header-height-pc));
  }

  .hero__copy,
  .hero__panel {
    padding: 40px;
  }

  .hero h1 {
    font-size: clamp(36px, 6vw, 64px);
  }

  .hero__lead {
    font-size: 18px;
  }

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

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

  .feature-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .link-cards,
  .news-placeholder {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .news-placeholder article:last-child {
    grid-column: span 1;
  }

  .profile {
    grid-template-columns: minmax(220px, 320px) minmax(0, 1fr);
    align-items: center;
    gap: 40px;
    padding: 40px;
  }

  .profile__visual {
    min-height: 320px;
  }

  .partnership {
    padding: 40px;
  }

  .partnership__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
    gap: 32px;
  }

  .cta-band__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 56px 40px;
  }

  .site-footer__top {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(220px, 0.7fr);
    gap: 32px;
    padding: 32px;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 112px 0;
  }

  .site-nav {
    gap: 32px;
  }

  .site-nav__list {
    gap: 24px;
  }

  .card-grid--four {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .link-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js-fade-in {
    opacity: 1;
    transform: none;
  }
}