:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-2: #eff6ff;
  --color-dark: #0f172a;
  --color-dark-2: #111827;
  --color-muted: #475569;
  --color-border: rgba(15, 23, 42, 0.1);
  --color-accent: #14b8a6;
  --color-accent-2: #6366f1;
  --shadow-card: 0 12px 30px rgba(15, 23, 42, 0.08);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1200px;
  --container-narrow: 860px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', 'Noto Sans JP', system-ui, sans-serif;
  color: var(--color-dark-2);
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
ul, ol { padding-left: 1.25rem; }
.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }
.container--narrow { width: min(calc(100% - 40px), var(--container-narrow)); margin: 0 auto; }
.section-pad { padding: 96px 0; }
.section-surface { background: rgba(255,255,255,0.8); }
.section-surface-dark {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #fff;
}
.prose p + p { margin-top: 1.2em; }
.prose--center { text-align: center; }
.screen-reader-text {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.site-logo a {
  font-size: 1.35rem; font-weight: 800; letter-spacing: 0.02em; color: var(--color-dark);
}
.global-nav__list, .footer-nav__list {
  list-style: none; display: flex; gap: 24px; padding: 0; margin: 0;
}
.global-nav__list a, .footer-nav__list a {
  color: var(--color-muted); font-weight: 500;
}
.global-nav__list a:hover, .footer-nav__list a:hover { color: var(--color-dark); }
.nav-toggle {
  display: none; background: none; border: 0; padding: 0; width: 44px; height: 44px; position: relative; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--color-dark); margin: 5px auto;
}

.home-hero, .page-hero {
  position: relative; overflow: hidden;
  padding: 120px 0 96px;
}
.home-hero::before, .page-hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(20,184,166,0.16), transparent 28%),
    radial-gradient(circle at 85% 15%, rgba(99,102,241,0.16), transparent 24%),
    radial-gradient(circle at 50% 100%, rgba(15,23,42,0.05), transparent 30%);
  pointer-events: none;
}
.home-hero__inner, .page-hero > .container { position: relative; z-index: 1; }
.home-hero__lead, .page-hero__sub, .section-heading__sub {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.92rem; font-weight: 700; color: var(--color-accent-2); letter-spacing: 0.08em; text-transform: uppercase;
}
.home-hero__title, .page-hero__title {
  margin: 18px 0 22px; font-size: clamp(2.4rem, 6vw, 4.9rem); line-height: 1.1; letter-spacing: -0.03em; font-weight: 800; color: var(--color-dark);
}
.home-hero__text, .page-hero__text, .section-heading__text {
  max-width: 760px; color: var(--color-muted); font-size: 1.06rem;
}
.home-hero__buttons { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 0 22px; border-radius: 999px; font-weight: 700; transition: all .25s ease;
}
.btn--primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-2) 100%);
  color: #fff; box-shadow: 0 16px 36px rgba(99, 102, 241, 0.22);
}
.btn--primary:hover { transform: translateY(-2px); }
.btn--secondary {
  background: #fff; color: var(--color-dark); border: 1px solid var(--color-border);
}
.btn--secondary:hover { background: #f8fafc; }

.section-heading { margin-bottom: 34px; }
.section-heading__title {
  margin: 12px 0 0; font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.25; letter-spacing: -0.02em; color: var(--color-dark);
}
.section-heading--light .section-heading__title,
.section-heading--light .section-heading__sub { color: #fff; }
.section-heading--light .section-heading__sub { opacity: .8; }

.service-grid, .strength-grid, .works-grid, .mvv-grid, .business-list {
  display: grid; gap: 22px;
}
.service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.strength-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.works-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.mvv-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.business-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.service-card, .strength-card, .work-card, .mvv-card, .business-list article,
.service-detail__item, .cta-box, .profile-table, .entry-content,
.contact-form, .contact-form__placeholder {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.service-card, .strength-card, .work-card, .mvv-card, .business-list article,
.service-detail__item, .entry-content, .contact-form, .contact-form__placeholder {
  padding: 28px;
}
.strength-card { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.12); box-shadow: none; }
.strength-card__title, .strength-card__text { color: #fff; }
.service-card__title, .strength-card__title, .work-card__title, .mvv-card h3, .business-list h3, .service-detail__item h2 {
  margin: 0 0 10px; font-size: 1.3rem; line-height: 1.35; color: var(--color-dark);
}
.strength-card__title { color: #fff; }
.service-card__text, .strength-card__text, .work-card__text, .mvv-card p, .business-list p,
.service-detail__item p, .service-detail__item li, .home-owned__text, .home-about__text,
.home-issues__text, .company-message__body, .contact-form__lead, .contact-example__list li {
  color: var(--color-muted);
}
.service-detail__item + .service-detail__item { margin-top: 22px; }
.service-detail__item ul { margin-top: 16px; }
.section-button { margin-top: 30px; }
.issue-list, .contact-example__list {
  display: grid; gap: 14px; list-style: none; padding: 0; margin: 0 0 20px;
}
.issue-list li, .contact-example__list li {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 16px 18px; box-shadow: var(--shadow-card);
}

.flow-list {
  display: grid; gap: 16px; padding-left: 1.25rem;
}
.flow-list li {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 20px 22px; box-shadow: var(--shadow-card);
}
.flow-list h3 { margin: 0 0 8px; }

.profile-table {
  padding: 14px 0; overflow: hidden;
}
.profile-table__row {
  display: grid; grid-template-columns: 180px 1fr; gap: 20px;
  padding: 20px 28px; border-top: 1px solid var(--color-border);
}
.profile-table__row:first-child { border-top: 0; }
.profile-table dt { font-weight: 700; color: var(--color-dark); }
.profile-table dd { margin: 0; color: var(--color-muted); }

.cta-box {
  padding: 40px; text-align: center;
  background: linear-gradient(135deg, rgba(20,184,166,0.12), rgba(99,102,241,0.12)), #fff;
}
.cta-box__title {
  margin: 0 0 14px; font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.25; letter-spacing: -0.02em; color: var(--color-dark);
}
.cta-box__text { max-width: 780px; margin: 0 auto 24px; color: var(--color-muted); }

.page-content { padding: 64px 0 96px; }
.entry-content h2, .entry-content h3 { color: var(--color-dark); margin-top: 1.6em; }
.entry-content p, .entry-content li { color: var(--color-muted); }

.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.8);
  padding: 72px 0 24px;
}
.site-footer__inner {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px;
  padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,0.12);
}
.site-footer__logo { font-size: 1.35rem; font-weight: 800; color: #fff; margin: 0 0 10px; }
.site-footer__copy { margin: 0 0 12px; font-size: 1.1rem; font-weight: 700; color: #fff; }
.site-footer__text { margin: 0; max-width: 520px; }
.site-footer .footer-nav__list { flex-wrap: wrap; justify-content: flex-end; }
.site-footer .footer-nav__list a { color: rgba(255,255,255,0.8); }
.site-footer__bottom { padding-top: 18px; text-align: center; }

.page-hero--simple { padding: 100px 0 60px; }
.company-message__name { margin-top: 18px; font-weight: 700; color: var(--color-dark); }

.contact-form__placeholder { margin-top: 18px; background: #f8fafc; }
.contact-form__placeholder p { margin: 0; color: var(--color-muted); }

@media (max-width: 1024px) {
  .service-grid, .works-grid, .mvv-grid, .business-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .nav-toggle { display: inline-block; }
  .global-nav {
    position: absolute; top: calc(100% + 1px); left: 0; right: 0;
    background: rgba(255,255,255,0.98); border-bottom: 1px solid var(--color-border);
    padding: 18px 20px; display: none;
  }
  .global-nav.is-open { display: block; }
  .global-nav__list { flex-direction: column; gap: 14px; }
  .site-footer__inner, .strength-grid, .service-grid, .works-grid, .mvv-grid, .business-list { grid-template-columns: 1fr; }
  .profile-table__row { grid-template-columns: 1fr; gap: 8px; }
  .site-footer .footer-nav__list { justify-content: flex-start; }
  .section-pad { padding: 72px 0; }
  .home-hero, .page-hero { padding: 92px 0 72px; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .site-header__inner { min-height: 74px; }
  .btn { width: 100%; }
  .home-hero__buttons { flex-direction: column; }
  .cta-box { padding: 28px 20px; }
  .service-card, .strength-card, .work-card, .mvv-card, .business-list article, .service-detail__item, .entry-content, .contact-form { padding: 22px; }
}