/* ONREAL brand shell — 全ページ共通の色・書体・ヘッダー・フッター・余白規則
   コーポレート基準（深緑・生成り・金／Futuraワードマーク）。
   ページ目的ごとの情報密度は各ページのCSSで持つ（legal.css / articles.css）。 */

:root {
  color-scheme: light;
  --ink: #06150e;
  --ink-deep: #020805;
  --ink-text: #09140e;
  --forest: #1f5b40;
  --forest-soft: #78b88e;
  --paper: #f6f3ea;
  --paper-bright: #fbfaf6;
  --gold: #b79a57;
  --muted: #5b655e;
  --hairline: rgb(9 20 14 / 0.22);
  --paper-hairline: rgb(246 243 234 / 0.25);
  --page-gutter: clamp(1.5rem, 5.6vw, 5.5rem);
  --header-gutter: clamp(1.5rem, 2.9vw, 2.8rem);
  --content-max: 96rem;
  --font-ui: Futura, "Avenir Next", "Century Gothic", sans-serif;
  --font-ja: "Hiragino Sans", "Yu Gothic", YuGothic, "Noto Sans JP", sans-serif;
  --font-display: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", serif;
  --font-en-body: Georgia, "Times New Roman", serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-text);
}

/* ==== header ==== */

.brand-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.05rem var(--header-gutter);
  border-bottom: 1px solid rgb(9 20 14 / 0.12);
  background: var(--paper-bright);
}

.brand-header .wordmark {
  color: var(--ink-text);
  font: 500 clamp(0.95rem, 1.18vw, 1.18rem) / 1 var(--font-ui);
  letter-spacing: 0.28em;
  text-decoration: none;
}

.brand-header .wordmark:hover,
.brand-header .wordmark:focus-visible {
  color: var(--forest);
}

.brand-header .back-link {
  color: var(--muted);
  font: 500 0.62rem / 1 var(--font-ui);
  letter-spacing: 0.2em;
  text-decoration: none;
  white-space: nowrap;
}

.brand-header .back-link:hover,
.brand-header .back-link:focus-visible {
  color: var(--gold);
}

/* ==== footer ==== */

.site-footer {
  background: var(--ink);
  border-top: 1px solid var(--gold);
  padding: 3.2rem var(--page-gutter) 2.4rem;
}

.footer-shell {
  display: flex;
  flex-wrap: wrap;
  gap: 2.4rem 4rem;
  max-width: var(--content-max);
  margin: 0 auto;
}

.footer-label {
  margin: 0 0 0.9rem;
  color: var(--gold);
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
}

.footer-col nav {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-col nav a {
  color: var(--paper-bright);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  opacity: 0.82;
  transition: color 200ms ease, opacity 200ms ease;
}

.footer-col nav a:hover,
.footer-col nav a:focus-visible {
  color: var(--gold);
  opacity: 1;
}

.footer-copyright {
  flex-basis: 100%;
  margin: 1.2rem 0 0;
  color: rgb(246 243 234 / 0.48);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

/* ==== reveal on scroll（軽量・JS有効時のみ隠す） ==== */

html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 520ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

html.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

html.has-js [data-reveal][data-reveal-delay="1"] {
  transition-delay: 60ms;
}

html.has-js [data-reveal][data-reveal-delay="2"] {
  transition-delay: 120ms;
}

/* 画像：transformを使わずopacityのみでフェード（object-fit/object-positionと干渉しない） */
html.has-js [data-reveal-img] {
  opacity: 0;
  transition: opacity 900ms cubic-bezier(0.22, 1, 0.36, 1);
}

html.has-js [data-reveal-img].is-visible {
  opacity: 1;
}

/* 判断プロセスのステップ表示：SP=上から順／PC=左から右へ */
html.has-js [data-reveal-rail] li {
  opacity: 0;
  transform: translateX(-22px);
  transition:
    opacity 480ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

html.has-js [data-reveal-rail].is-visible li {
  opacity: 1;
  transform: none;
}

html.has-js [data-reveal-rail].is-visible li[data-step="1"] { transition-delay: 0ms; }
html.has-js [data-reveal-rail].is-visible li[data-step="2"] { transition-delay: 170ms; }
html.has-js [data-reveal-rail].is-visible li[data-step="3"] { transition-delay: 340ms; }
html.has-js [data-reveal-rail].is-visible li[data-step="4"] { transition-delay: 510ms; }

/* 金のラインも同じ向きに伸びる */
html.has-js [data-reveal-rail]::before {
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
}

html.has-js [data-reveal-rail].is-visible::before {
  transform: scaleX(1);
}

html.has-js [data-reveal-rail]::after {
  opacity: 0;
  transition: opacity 400ms ease 780ms;
}

html.has-js [data-reveal-rail].is-visible::after {
  opacity: 1;
}

/* SP：上から降りてくる縦の流れに切り替える */
@media (max-width: 900px) {
  html.has-js [data-reveal-rail] li {
    transform: translateY(-16px);
  }

  html.has-js [data-reveal-rail]::before {
    transform-origin: center top;
    transform: scaleY(0);
    transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  html.has-js [data-reveal-rail].is-visible::before {
    transform: scaleY(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  html.has-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html.has-js [data-reveal-rail] li,
  html.has-js [data-reveal-rail]::before,
  html.has-js [data-reveal-rail]::after,
  html.has-js [data-reveal-img] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==== a11y ==== */

.skip-link {
  position: absolute;
  left: -999rem;
}

.skip-link:focus-visible {
  left: 1rem;
  top: 1rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--paper-bright);
  color: var(--ink-text);
  font-family: var(--font-ui);
}

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