@charset "UTF-8";

/* =========================================================
   株式会社セブンアイランズ  コーポレートサイト
   - 見出し: 明朝 (Shippori Mincho)
   - 本文  : ゴシック (Zen Kaku Gothic New)
   - キーカラー: #96e1e1
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --color-primary: #96e1e1;
  --color-primary-deep: #4bb0b0;
  --color-primary-ink: #276e6e;
  --color-ink: #1b2321;
  --color-body: #3c4442;
  --color-muted: #8b9694;
  --color-bg: #ffffff;
  --color-bg-alt: #f2fafa;
  --color-line: #e0ecec;
  --color-footer: #14201f;

  --font-mincho: "Shippori Mincho", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
  --font-gothic: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  --font-en: "Times New Roman", serif;

  --wrap: 1160px;
  --wrap-narrow: 880px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --header-h: 84px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-gothic);
  font-weight: 400;
  font-feature-settings: "palt";
  line-height: 1.9;
  color: var(--color-body);
  background: var(--color-bg);
  letter-spacing: 0.04em;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s var(--ease), opacity 0.3s var(--ease);
}

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

h1, h2, h3, h4 {
  font-family: var(--font-mincho);
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.5;
  margin: 0;
  letter-spacing: 0.08em;
}

p { margin: 0; }

:focus-visible {
  outline: 2px solid var(--color-primary-deep);
  outline-offset: 3px;
}

/* ---------- Layout helpers ---------- */
.l-wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.l-wrap--narrow { max-width: var(--wrap-narrow); }

.l-section {
  padding-block: clamp(4.5rem, 12vw, 9rem);
}

.l-section--alt { background: var(--color-bg-alt); }
.l-section--article { padding-block: clamp(3rem, 7vw, 5rem) clamp(4rem, 10vw, 7rem); }

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

/* ---------- Section headings ---------- */
.section-head {
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section-head__en {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(2.75rem, 7vw, 4.75rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.section-head__ja {
  display: block;
  margin-top: 0.6rem;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  letter-spacing: 0.12em;
}

.section-head__lead {
  margin-top: 1.6rem;
  max-width: 40em;
  font-size: 0.975rem;
  color: var(--color-body);
}

.section-head--center {
  text-align: center;
}
.section-head--center .section-head__lead { margin-inline: auto; }

/* ---------- Buttons ---------- */
.button {
  --btn-fg: #fff;
  --btn-bg: var(--color-primary-ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.9em;
  padding: 1.05em 2.6em;
  font-family: var(--font-gothic);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bg);
  border-radius: 999px;
  overflow: hidden;
  isolation: isolate;
}

.button::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--color-primary);
  transform: translateX(-101%);
  transition: transform 0.45s var(--ease);
}

.button:hover { color: var(--color-ink); }
.button:hover::before { transform: translateX(0); }

.button__arrow {
  width: 1.4em; height: 1px;
  background: currentColor;
  position: relative;
  flex: none;
  transition: width 0.35s var(--ease);
}
.button__arrow::after {
  content: "";
  position: absolute;
  right: 0; top: 50%;
  width: 6px; height: 6px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: translateY(-50%) rotate(45deg);
}

.button--ghost {
  --btn-fg: var(--color-primary-ink);
  --btn-bg: transparent;
  border-color: var(--color-primary);
}
.button--ghost:hover { color: var(--color-ink); }

.button--light {
  --btn-fg: var(--color-ink);
  --btn-bg: #fff;
  border-color: #fff;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  height: var(--header-h);
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), height 0.4s var(--ease);
}

/* ヒーロー上での視認性を確保する薄いスクリム */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(14,24,23,0.5) 0%, rgba(14,24,23,0) 100%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.site-header--overlay:not(.is-scrolled)::before { opacity: 1; }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1360px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-line);
  height: 70px;
}

/* ナビとヘッダー右側を横一列に（PC）。SPはハンバーガー表示のため従来どおり */
@media (min-width: 861px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: clamp(1.5rem, 3vw, 2.75rem);
  }
}

.site-logo {
  display: flex;
  align-items: center;
  line-height: 1;
  flex-shrink: 1;
  min-width: 0;
}
.site-logo__img {
  display: block;
  width: auto;
  height: 50px;
  transition: filter 0.4s var(--ease), height 0.4s var(--ease);
}
.site-header.is-scrolled .site-logo__img { height: 50px; }

/* header colour when over the hero (top of home) */
.site-header:not(.is-scrolled).site-header--overlay .site-logo__img {
  filter: brightness(0) invert(1);
}
.site-header:not(.is-scrolled).site-header--overlay .global-nav__link,
.site-header:not(.is-scrolled).site-header--overlay .header-tel {
  color: #fff;
}
.site-header:not(.is-scrolled).site-header--overlay .global-nav__link::after { background: #fff; }

.global-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 2.75rem);
}

/* お問い合わせはPCではヘッダーボタンに集約 */
@media (min-width: 861px) {
  .global-nav__list > li:last-child { display: none; }
}

.global-nav__link {
  position: relative;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  padding-block: 0.4em;
}
.global-nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--color-primary-ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.global-nav__link:hover::after,
.global-nav__link[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }

.header-aside {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.header-tel {
  text-align: right;
  line-height: 1.35;
}
.header-tel__num {
  display: block;
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.header-tel__label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-align: center;
}

.header-cta { flex: none; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex: none;
  position: relative;
  width: 46px; height: 46px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.nav-toggle__bar {
  position: absolute;
  top: 50%; left: 50%;
  width: 26px; height: 2px;
  margin: -1px 0 0 -13px;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
}
.nav-toggle__bar,
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform 0.35s var(--ease), opacity 0.2s var(--ease), background 0.3s;
}
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%; height: 100%;
}
.nav-toggle__bar::before { top: -8px; }
.nav-toggle__bar::after  { top: 8px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  z-index: 0;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 2.4s var(--ease);
}
.js .hero__media img { transform: scale(1.12); }
.js .hero.is-inview .hero__media img { transform: scale(1); }
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(16,26,25,0.45) 0%, rgba(16,26,25,0.2) 30%, rgba(16,26,25,0.55) 68%, rgba(16,26,25,0.82) 100%),
    linear-gradient(90deg, rgba(16,26,25,0.5) 0%, rgba(16,26,25,0.1) 55%, rgba(16,26,25,0) 100%);
}

.hero__inner {
  width: 100%;
  max-width: 1360px;
  margin-inline: auto;
  padding: 0 var(--gutter) clamp(4rem, 11vh, 8rem);
}

.hero__copy {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: clamp(2.4rem, 6.4vw, 5rem);
  line-height: 1.4;
  letter-spacing: 0.1em;
  color: var(--color-bg);
  text-shadow: 0 2px 24px rgba(10,18,17,0.55), 0 1px 4px rgba(10,18,17,0.4);
}
.hero__copy .is-accent { color: var(--color-primary); }

.hero__sub {
  margin-top: 1.6rem;
  max-width: 34em;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  line-height: 2;
}

.hero__scroll {
  position: absolute;
  right: var(--gutter);
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 0.8em;
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  padding-bottom: 5rem;
}
.hero__scroll::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 1px; height: 3.5rem;
  background: rgba(255,255,255,0.6);
  overflow: hidden;
}
.hero__scroll span::before {
  content: "";
  position: absolute;
  left: calc(50% - 1px); bottom: 0;
  width: 2px; height: 3.5rem;
  background: var(--color-primary);
  animation: scrollLine 2.4s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  40% { transform: scaleY(1); transform-origin: top; }
  60% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- Intro (mission) ---------- */
.intro__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: center;
}
.intro__text .section-head { margin-bottom: 2rem; }
.intro__body p + p { margin-top: 1.4rem; }

.intro__figure {
  position: relative;
  z-index: 0;
}
.intro__figure img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.intro__figure::before {
  content: "";
  position: absolute;
  inset: 1.6rem -1.6rem -1.6rem 1.6rem;
  border: 1px solid var(--color-primary);
  z-index: -1;
}

/* ---------- Services ---------- */
.service-list {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4.5rem);
}

.service {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.service:nth-child(even) .service__media { order: 2; }

.service__media {
  position: relative;
  overflow: hidden;
}
.service__media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.service__num {
  font-family: var(--font-en);
  font-size: 1rem;
  font-style: italic;
  letter-spacing: 0.1em;
  color: var(--color-primary-deep);
}
.service__title {
  margin-top: 0.6rem;
  font-size: clamp(1.3rem, 3vw, 1.75rem);
}
.service__title .en {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}
.service__desc { margin-top: 1.4rem; font-size: 0.95rem; }
.service__points {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.service__points li {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-primary-ink);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 0.4em 1.1em;
}

/* ---------- Feature strip ---------- */
.feature {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
}
.feature__item { text-align: center; }
.feature__icon {
  width: 64px; height: 64px;
  margin: 0 auto 1.4rem;
  border: 1px solid var(--color-primary);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--color-primary-ink);
}
.feature__title { font-size: 1.15rem; letter-spacing: 0.1em; }
.feature__text { margin-top: 0.9rem; font-size: 0.9rem; }

/* ---------- Page hero (sub pages) ---------- */
.page-hero {
  position: relative;
  z-index: 0;
  min-height: 46vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  margin-top: 0;
}
.page-hero__media { position: absolute; inset: 0; z-index: -2; }
.page-hero__media img { width: 100%; height: 100%; object-fit: cover; }
.page-hero::after {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(20,32,31,0.5), rgba(20,32,31,0.55));
}
.page-hero__inner {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: calc(var(--header-h) + 3rem) var(--gutter) 3rem;
}
.page-hero__en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: clamp(2.75rem, 8vw, 5rem);
  font-weight: 500;
  line-height: 1;
  color: var(--color-primary);
}
.page-hero__ja {
  display: block;
  margin-top: 0.8rem;
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  letter-spacing: 0.16em;
  color: #fff;
}

.breadcrumb {
  background: var(--color-bg-alt);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6em;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 1rem var(--gutter);
}
.breadcrumb__list li::after { content: "/"; margin-left: 0.6em; color: var(--color-line); }
.breadcrumb__list li:last-child::after { content: none; }
.breadcrumb a:hover { color: var(--color-primary-ink); }

/* ---------- Definition table ---------- */
.def-table {
  width: 100%;
  border-top: 1px solid var(--color-line);
}
.def-table__row {
  display: grid;
  grid-template-columns: 220px 1fr;
  border-bottom: 1px solid var(--color-line);
}
.def-table__th,
.def-table__td {
  padding: 1.5rem 1rem;
  font-size: 0.92rem;
}
.def-table__th {
  font-family: var(--font-mincho);
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: 0.1em;
}
.def-table__td { color: var(--color-body); }

/* ---------- Recruit message ---------- */
.recruit-message {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: center;
}
.recruit-message__figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.recruit-message__copy {
  font-family: var(--font-mincho);
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.9;
  color: var(--color-ink);
}
.recruit-message__body { margin-top: 1.8rem; }
.recruit-message__body p + p { margin-top: 1.2rem; }

/* ---------- CTA ---------- */
.cta {
  position: relative;
  z-index: 0;
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.cta__media { position: absolute; inset: 0; z-index: -2; }
.cta__media img { width: 100%; height: 100%; object-fit: cover; }
.cta::after {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(39,110,110,0.82), rgba(20,32,31,0.82));
}
.cta__inner { padding-block: clamp(5rem, 12vw, 8rem); }
.cta__en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: clamp(2.5rem, 7vw, 4rem);
  color: var(--color-primary);
  line-height: 1;
}
.cta__ja {
  display: block;
  margin-top: 1rem;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  letter-spacing: 0.14em;
  color: #fff;
}
.cta__text {
  margin: 1.6rem auto 2.6rem;
  max-width: 34em;
  font-size: 0.95rem;
}
.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.75rem;
  justify-content: center;
  align-items: center;
}
.cta__tel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  line-height: 1.2;
}
.cta__tel__num {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #fff;
}
.cta__tel__num:hover { color: var(--color-primary); }
.cta__tel__label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.75);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-footer);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  padding-block: clamp(3.5rem, 8vw, 5.5rem) 2rem;
}
.site-footer__top {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.site-footer .site-logo__img {
  filter: brightness(0) invert(1);
  height: 78px;
}
.footer-tagline {
  margin-top: 1.4rem;
  font-family: var(--font-mincho);
  font-size: 1.05rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.85);
}
.footer-offices {
  display: grid;
  gap: 1.6rem;
}
.footer-offices__item dt {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--color-primary);
  margin-bottom: 0.3rem;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  padding-block: 2rem;
}
.footer-nav a { font-size: 0.82rem; letter-spacing: 0.1em; }
.footer-nav a:hover { color: var(--color-primary); }
.site-footer__copy {
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.45);
}

/* =========================================================
   inview animations
   ========================================================= */
/* JavaScript が有効なときだけ初期状態を隠す（プログレッシブエンハンスメント） */
.js [data-inview] {
  opacity: 0;
  transform: translateY(38px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--inview-delay, 0s);
  will-change: opacity, transform;
}
.js [data-inview="fade"] { transform: none; }
.js [data-inview="left"] { transform: translateX(-48px); }
.js [data-inview="right"] { transform: translateX(48px); }
.js [data-inview="zoom"] { transform: scale(1.06); }
.js [data-inview="clip"] {
  opacity: 1;
  transform: none;
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.1s var(--ease);
  transition-delay: var(--inview-delay, 0s);
}

.js [data-inview].is-inview {
  opacity: 1;
  transform: none;
  clip-path: inset(0 0 0 0);
}

.js .inview-stagger > * {
  opacity: 0;
  transform: translateY(38px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.js .inview-stagger.is-inview > * {
  opacity: 1;
  transform: none;
}
.js .inview-stagger.is-inview > *:nth-child(2) { transition-delay: 0.12s; }
.js .inview-stagger.is-inview > *:nth-child(3) { transition-delay: 0.24s; }
.js .inview-stagger.is-inview > *:nth-child(4) { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-inview],
  .inview-stagger > * {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
    transition: none !important;
  }
  .hero__media img { transform: none; }
  .hero__scroll span::before { animation: none; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1200px) {
  .header-tel { display: none; }
}

@media (max-width: 860px) {
  :root { --header-h: 68px; }

  .nav-toggle { display: block; z-index: 120; }

  /* モバイルはヒーロー上のスクリムを強めてロゴ・メニューを視認しやすく */
  .site-header--overlay:not(.is-scrolled)::before {
    background: linear-gradient(180deg, rgba(14,24,23,0.6) 0%, rgba(14,24,23,0.34) 65%, rgba(14,24,23,0) 100%);
  }

  .site-header__inner { gap: 1rem; }
  .site-logo__img { height: 50px; }
  .site-header.is-scrolled .site-logo__img { height: 50px; }
  .site-footer .site-logo__img { height: 60px; }

  /* ハンバーガーはヒーロー上では白（メニュー展開中は白背景のため黒に戻す） */
  .site-header:not(.is-scrolled).site-header--overlay .site-nav:not(.is-open) .nav-toggle__bar,
  .site-header:not(.is-scrolled).site-header--overlay .site-nav:not(.is-open) .nav-toggle__bar::before,
  .site-header:not(.is-scrolled).site-header--overlay .site-nav:not(.is-open) .nav-toggle__bar::after {
    background: #fff;
  }

  .global-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 100vh;
    height: 100dvh;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(6px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--gutter);
    overflow-y: auto;
    transform: translateY(-100%);
    visibility: hidden;
    transition: transform 0.55s var(--ease), visibility 0s linear 0.55s;
  }
  .site-nav.is-open .global-nav {
    transform: translateY(0);
    visibility: visible;
    transition: transform 0.55s var(--ease), visibility 0s;
  }

  .global-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.75rem;
  }
  .global-nav__link { font-size: 1.15rem; }
  .site-header:not(.is-scrolled).site-header--overlay .global-nav__link { color: var(--color-ink); }
  .site-header:not(.is-scrolled).site-header--overlay .global-nav__link::after { background: var(--color-primary-ink); }

  .site-nav.is-open .nav-toggle__bar { background: transparent; filter: none; }
  .site-nav.is-open .nav-toggle__bar::before { transform: translateY(8px) rotate(45deg); }
  .site-nav.is-open .nav-toggle__bar::after { transform: translateY(-8px) rotate(-45deg); }

  .header-aside { gap: 0; }
  .header-cta { display: none; }

  .intro__grid,
  .service,
  .service:nth-child(even) .service__media,
  .recruit-message {
    grid-template-columns: 1fr;
  }
  .service:nth-child(even) .service__media { order: 0; }
  .intro__figure { order: -1; }
  .intro__figure::before { inset: 1rem -1rem -1rem 1rem; }

  .feature { grid-template-columns: 1fr; }

  .def-table__row { grid-template-columns: 1fr; }
  .def-table__th { padding-bottom: 0.3rem; }
  .def-table__td { padding-top: 0.3rem; }

  .site-footer__top { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero__copy { font-size: clamp(2rem, 8.5vw, 2.6rem); }
  .button { padding: 1em 2em; }
}

/* =========================================================
   News（新着情報）
   ========================================================= */
.news-preview__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.75rem;
}
.news-preview__head .section-head { margin-bottom: 0; }

.news-list {
  border-top: 1px solid var(--color-line);
}
.news-list__item {
  border-bottom: 1px solid var(--color-line);
}
.news-list__link {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 1.75rem;
  padding: 1.6rem 0.5rem;
  transition: background 0.3s var(--ease), padding-inline 0.3s var(--ease);
}
.news-list__link:hover {
  background: var(--color-bg-alt);
  padding-inline: 1.25rem;
}
.news-list__date {
  font-family: var(--font-en);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}
.news-list__cat {
  justify-self: start;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-primary-ink);
  border: 1px solid var(--color-primary);
  border-radius: 999px;
  padding: 0.32em 1.1em;
  white-space: nowrap;
}
.news-list__title {
  font-size: 0.98rem;
  color: var(--color-ink);
  line-height: 1.7;
}
.news-list__link:hover .news-list__title { color: var(--color-primary-ink); }

.news-list--all .news-list__link { padding-block: 1.9rem; }

/* ---------- Document hero（下層ページの簡易見出し） ---------- */
.doc-hero {
  padding: calc(var(--header-h) + 3.75rem) 0 2.75rem;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-line);
}
.doc-hero__en {
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  color: var(--color-primary);
}
.doc-hero__ja {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--font-mincho);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  color: var(--color-ink);
}

/* ---------- Article（新着情報 詳細） ---------- */
.article {
  max-width: 760px;
  margin-inline: auto;
}
.article__header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-line);
}
.article__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.3rem;
}
.article__date {
  font-family: var(--font-en);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}
.article__cat {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-primary-ink);
  border: 1px solid var(--color-primary);
  border-radius: 999px;
  padding: 0.32em 1.1em;
}
.article__title {
  font-size: clamp(1.5rem, 4vw, 2.15rem);
  line-height: 1.6;
}
.article__body {
  font-size: 1rem;
  line-height: 2.05;
  color: var(--color-body);
}
.article__body > * + * { margin-top: 1.6rem; }
.article__body h2 {
  font-size: 1.2rem;
  line-height: 1.7;
  margin-top: 2.8rem;
  padding-left: 0.85rem;
  border-left: 3px solid var(--color-primary);
}
.article__body ul {
  padding-left: 1.4em;
  list-style: disc;
}
.article__body li { margin-top: 0.5rem; }
.article__body a {
  color: var(--color-primary-ink);
  text-decoration: underline;
}
.article__body img {
  width: 100%;
  height: auto;
  margin-block: 2.4rem;
}

.article-foot {
  max-width: 760px;
  margin: 4rem auto 0;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-line);
  text-align: center;
}

@media (max-width: 640px) {
  .news-list__link {
    grid-template-columns: auto 1fr;
    gap: 0.55rem 1.1rem;
    padding-block: 1.4rem;
  }
  .news-list__title { grid-column: 1 / -1; }
}