@import url("https://fonts.googleapis.com/css2?family=Zen+Maru+Gothic:wght@400;500&display=swap");

:root {
  --color-bg: #faf8f5;
  --color-text: #2e2a25;
  --color-text-muted: #7a736a;
  --color-accent: #c47a3a;
  --color-accent-light: #e8c4a0;
  --color-border: #e8e2d9;
  --color-white: #ffffff;
  --font-serif: "Zen Maru Gothic", sans-serif;
  --font-sans:
    -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", YuGothic, "Yu Gothic", Meiryo, sans-serif;
}

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

html,
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.8;
  margin: 0;
  padding: 0;
}

/* =====================
   ヒーロー
===================== */
.about-hero {
  position: relative;
  height: 60vh;
  min-height: 380px;
  max-height: 560px;
  background-image: url("/img/about/hero.webp");
  background-size: cover;
  background-position: center 20%;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(6, 3, 0, 0.5) 0%,
    rgba(6, 3, 0, 0.2) 50%,
    rgba(6, 3, 0, 0) 100%
  );
}
.about-hero-fade {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 110px;
  background: linear-gradient(to bottom, transparent, var(--color-bg));
}
.about-hero-content {
  position: relative;
  z-index: 2;
  padding: 0 5vw 3.8rem;
  max-width: 580px;
}
.hero-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-accent-light);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 400;
  color: #fff;
  letter-spacing: 0.06em;
  line-height: 1.5;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5);
  margin-bottom: 0.5rem;
}
.hero-sub {
  font-size: clamp(0.8rem, 1.4vw, 0.9rem);
  color: rgba(255, 255, 255, 0.78);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.3);
  line-height: 1.9;
}

/* =====================
   セクション共通
===================== */
.section-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 4.5rem 2rem;
}
.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.04em;
  line-height: 1.5;
  margin-bottom: 2rem;
}

/* =====================
   コンセプトセクション
===================== */
.concept-section {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.concept-lead {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  font-weight: 400;
  color: var(--color-text);
  line-height: 2.2;
  margin-bottom: 1.8rem;
}
.concept-body {
  font-size: clamp(0.88rem, 1.5vw, 0.95rem);
  color: var(--color-text-muted);
  line-height: 2.1;
}
.concept-body p {
  margin-bottom: 1.2rem;
}
.concept-body p:last-child {
  margin-bottom: 0;
}

/* =====================
   過ごし方セクション
===================== */
.howto-section {
  background: var(--color-bg);
}

.howto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
  margin-top: 0.5rem;
}
.howto-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1.5rem 1.6rem;
}
.howto-step {
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.howto-card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}
.howto-card-body {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.85;
}

/* =====================
   運営者情報セクション
===================== */
.operator-section {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
}
.operator-grid {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}
.operator-item {
}
.operator-label {
  font-size: 0.73rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 0.3rem;
}
.operator-value {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
}
.operator-value a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.operator-value a:hover {
  color: #a8652e;
}
.operator-note {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 0.3rem;
  line-height: 1.7;
}

/* =====================
   フッター
===================== */
.site-footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.site-footer .logo-small {
  display: inline-block;
  line-height: 0;
  text-decoration: none;
}
.site-footer .logo-small img {
  height: 22px;
  width: auto;
  opacity: 0.6;
}
.site-footer .footer-links {
  display: flex;
  gap: 0.4rem 1.2rem;
  flex-wrap: wrap;
}
.site-footer .footer-link {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-decoration: none;
  white-space: nowrap;
}
.site-footer .footer-link:hover {
  color: var(--color-text);
}

/* =====================
   レスポンシブ
===================== */
@media (max-width: 768px) {
  .about-hero {
    height: 50vh;
    min-height: 280px;
    max-height: 400px;
  }
  .about-hero-content {
    padding: 0 1.4rem 2.8rem;
  }
  .section-inner {
    padding: 3rem 1.4rem;
  }
  .howto-grid {
    grid-template-columns: 1fr;
  }
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-footer .footer-links {
    gap: 1rem;
  }
}