@charset "UTF-8";
/* =========================================================
   BBStone デザイン心理学研究所 — 共通スタイル
   Figma「02 新デザイン案」準拠（PC 1440 / SP 375）
   ========================================================= */

/* ---------- Tokens（Figma 変数「BBStone / Color」と同じ値） ---------- */
:root {
  --c-magenta: #d7035b;
  --c-magenta-soft: #fbe9f0;
  --c-navy: #112456;
  --c-neutral-soft: #ededed;
  --c-neutral-strong: #c9ced6;
  --c-text: #222;
  --c-text-sub: #646b76;
  --c-white: #fff;
  --c-muted: #f4f5f7;
  --c-border: #e1e4e9;

  --f-sans: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  --f-serif: "Noto Serif JP", "游明朝", YuMincho, "Hiragino Mincho ProN", serif;

  --container: 1120px;
  --gutter: 24px;
  --section-py: 128px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--c-white); /* ダークモード時も白背景を明示 */
  color: var(--c-text);
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.9;
  font-weight: 500;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--c-magenta); outline-offset: 3px; }

.container { width: min(var(--container), 100% - var(--gutter) * 2); margin-inline: auto; }
.section { padding-block: var(--section-py); }
.section--soft { background: var(--c-neutral-soft); }
.section--muted { background: var(--c-muted); }
.sp-only { display: none; }

/* ---------- Parts ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--c-navy);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: .18em;
}
.eyebrow::before { content: ""; width: 32px; height: 2px; background: var(--c-navy); flex-shrink: 0; }

.lead { color: var(--c-text-sub); font-size: 16px; line-height: 1.9; }

.heading { display: flex; flex-direction: column; gap: 20px; }
.heading__title { font-family: var(--f-serif); font-weight: 500; font-size: 40px; line-height: 1.4; letter-spacing: .06em; }
.heading__lead { max-width: 720px; }
.heading--center { align-items: center; text-align: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  transition: background-color .2s, color .2s, opacity .2s;
}
.btn--primary { background: var(--c-magenta); color: var(--c-white); }
.btn--primary:hover { opacity: .85; }
.btn--light { background: var(--c-white); color: var(--c-magenta); }
.btn--light:hover { background: var(--c-magenta-soft); }
.btn--outline { border: 1.5px solid var(--c-magenta); color: var(--c-magenta); align-self: flex-start; }
.btn--outline:hover { background: var(--c-magenta); color: var(--c-white); }
.btn--sm { padding: 12px 22px; }
.btn__arrow { transition: transform .2s; }
.btn:hover .btn__arrow { transform: translateX(3px); }

.tag {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--c-magenta-soft);
  color: var(--c-magenta);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 64px;
  background: var(--c-white);
  border-bottom: 1px solid var(--c-border);
}
.site-header__logo { display: flex; align-items: center; gap: 14px; }
.site-header__logo img:first-child { width: 86px; height: 48px; object-fit: contain; }
.site-header__logo img:last-child { width: 128px; height: 14px; object-fit: contain; }
.site-header__menu { display: none; }
.global-nav { display: flex; align-items: center; gap: 36px; }
.global-nav__list { display: flex; gap: 36px; font-size: 14px; font-weight: 500; line-height: 1; }
.global-nav__list a:hover { color: var(--c-magenta); }

/* ---------- Hero ---------- */
.hero { position: relative; height: 760px; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.55) 45%, rgba(255,255,255,0) 75%);
}
.hero__copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 100px;
  padding-left: max(var(--gutter), calc((100% - 1232px) / 2));
}
.hero__title { display: flex; flex-direction: column; gap: 19px; font-family: var(--f-serif); font-weight: 500; font-size: 52px; line-height: 1.45; letter-spacing: .06em; }
.hero__line { display: block; }
.hero__nowrap { display: inline-flex; align-items: center; white-space: nowrap; vertical-align: middle; }
.fraction { display: inline-flex; flex-direction: column; align-items: center; padding-inline: 6px; font-size: 46px; line-height: 1; text-align: center; }
.fraction span:first-child { line-height: 1.28; margin-bottom: -2px; }
.fraction span:first-child::after { content: ""; display: block; width: 40px; height: 2px; margin: 0 auto -2px; background: currentColor; }
.hero__cite { color: var(--c-text-sub); font-family: var(--f-serif); font-weight: 400; font-size: 16px; line-height: 1.5; letter-spacing: .06em; }
.hero__lead { max-width: 560px; margin-top: 29px; font-size: 17px; line-height: 2; }
.hero__buttons { display: flex; gap: 16px; }

/* ---------- Mission ---------- */
.mission__inner { display: flex; align-items: center; gap: 80px; }
.mission__image { flex: 0 0 520px; height: 420px; border-radius: 12px; overflow: hidden; }
.mission__image img { width: 100%; height: 100%; object-fit: cover; }
.mission__text { display: flex; flex-direction: column; gap: 28px; flex: 1; }
.mission__title { font-family: var(--f-serif); font-weight: 500; font-size: 44px; line-height: 1.5; letter-spacing: .06em; }
.mission__sub { font-family: var(--f-serif); font-weight: 400; font-size: 20px; line-height: 1.8; letter-spacing: .06em; }
.mission__text .lead { max-width: 520px; }

/* ---------- Design Psychology ---------- */
.psychology .container, .service .container, .works .container { display: flex; flex-direction: column; gap: 56px; }
.psychology__cards { display: grid; grid-template-columns: 1fr; gap: 24px; }
/* 元画像が370×180のため、引き伸ばさず原寸で左に置く */
.psychology .card { display: grid; grid-template-columns: 370px 1fr; align-items: center; }
.psychology .card__image { height: 180px; }
.psychology .card__body { padding: 24px 40px; }
.card { background: var(--c-white); border-radius: 12px; overflow: hidden; }
.card__image { height: 265px; }
.card__image img { width: 100%; height: 100%; object-fit: cover; }
.card__body { display: flex; flex-direction: column; gap: 14px; padding: 32px; }
.card__title { font-family: var(--f-serif); font-weight: 500; font-size: 22px; line-height: 1.5; letter-spacing: .06em; }
.card__text { color: var(--c-text-sub); font-size: 15px; line-height: 1.9; }

/* ---------- Service ---------- */
.service .container { position: relative; }
.service .heading { position: absolute; z-index: 1; top: 104px; left: 60px; } /* 写真の上に重ねる（Figma 38:4） */
.service__image { height: 575px; border-radius: 16px; overflow: hidden; }
.service__image img { width: 100%; height: 100%; object-fit: cover; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step { display: flex; flex-direction: column; gap: 16px; padding: 40px 36px; border-radius: 12px; background: var(--c-neutral-soft); }
.step__no { color: var(--c-magenta); font-family: var(--f-serif); font-weight: 400; font-size: 44px; line-height: 1; letter-spacing: .06em; }
.step__title { font-family: var(--f-serif); font-weight: 500; font-size: 24px; line-height: 1.4; letter-spacing: .06em; }
.step__text { color: var(--c-text-sub); font-size: 15px; line-height: 1.9; }

/* ---------- Pick up works ---------- */
.head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.works__list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.work-card { background: var(--c-white); border-radius: 12px; overflow: hidden; }
.work-card a { display: block; height: 100%; }
.work-card__thumb { height: 176px; background: var(--c-neutral-strong); }
.work-card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.work-card__thumb--contain { background: var(--c-white); }
.work-card__thumb--contain img { object-fit: contain; }
.work-card a:hover .work-card__thumb img { transform: scale(1.03); }
.work-card__body { display: flex; flex-direction: column; gap: 10px; padding: 24px; }
.work-card__client { color: var(--c-magenta); font-size: 12px; font-weight: 500; line-height: 1.4; }
.work-card__title { font-family: var(--f-serif); font-weight: 500; font-size: 18px; line-height: 1.5; letter-spacing: .06em; }
.work-card__text { color: var(--c-text-sub); font-size: 13px; line-height: 1.8; }

/* ---------- News / Media（左見出し＋右リスト） ---------- */
.split { display: flex; align-items: flex-start; gap: 80px; }
.split__head { display: flex; flex-direction: column; gap: 32px; flex: 0 0 320px; }
.news-list, .media-list { flex: 1; min-width: 0; }
.news-item { border-bottom: 1px solid var(--c-border); }
.news-item a { display: flex; align-items: center; gap: 24px; padding-block: 24px; }
.news-item__date, .media-item__date { flex-shrink: 0; color: var(--c-text-sub); font-size: 14px; line-height: 1; }
.news-item__cat { flex: 0 0 120px; display: flex; }
.news-item__title { flex: 1; font-size: 15px; line-height: 1.7; }
.news-item__icon { flex-shrink: 0; color: var(--c-magenta); font-size: 16px; line-height: 1; }
.news-item a:hover .news-item__title { color: var(--c-magenta); }
.media-item { display: flex; align-items: center; gap: 24px; padding-block: 20px; border-bottom: 1px solid var(--c-border); }
.media-item__title { flex: 1; font-size: 15px; line-height: 1.7; }

/* ---------- CEO Blog ---------- */
.blog { padding-bottom: var(--section-py); }
.blog-banner { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 44px 56px; border-radius: 16px; background: var(--c-neutral-soft); }
.blog-banner__text { display: flex; flex-direction: column; gap: 10px; }
.blog-banner__title { font-family: var(--f-serif); font-weight: 500; font-size: 28px; line-height: 1.5; letter-spacing: .06em; }
.blog-banner__lead { color: var(--c-text-sub); font-size: 15px; line-height: 1.9; }
.blog-banner .btn--outline { align-self: center; }

/* ---------- Clients ---------- */
.clients .container { display: flex; flex-direction: column; gap: 48px; }
.logo-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.logo-grid li { display: flex; align-items: center; justify-content: center; padding: 18px 24px; border: 1px solid var(--c-border); border-radius: 8px; background: var(--c-white); }
.logo-grid img { width: 150px; height: 77px; object-fit: contain; }

/* ---------- Contact CTA ---------- */
.contact-cta { padding-bottom: var(--section-py); }
.contact-cta__box { display: flex; flex-direction: column; align-items: center; gap: 28px; padding: 72px 80px; border-radius: 20px; background: var(--c-magenta-soft); text-align: center; }
.contact-cta__title { font-family: var(--f-serif); font-weight: 500; font-size: 36px; line-height: 1.5; letter-spacing: .06em; }
.contact-cta__lead { color: var(--c-text-sub); font-size: 16px; line-height: 1.9; }
.contact-cta__tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 860px; }
.contact-cta__tags li { padding: 8px 16px; border-radius: 999px; background: var(--c-white); font-size: 13px; font-weight: 500; line-height: 1; }
.contact-cta__actions { display: flex; align-items: center; gap: 32px; }
.contact-cta__tel { font-size: 15px; font-weight: 500; line-height: 1; }

/* ---------- Footer ---------- */
.site-footer { padding-block: 72px; background: var(--c-navy); color: var(--c-white); }
.site-footer__inner { display: flex; justify-content: space-between; gap: 56px; margin-bottom: 56px; }
.site-footer__company { display: flex; flex-direction: column; gap: 18px; }
.site-footer__company p:not(.site-footer__name) { font-size: 13px; line-height: 1.8; opacity: .8; }
.site-footer__name { font-family: var(--f-serif); font-weight: 500; font-size: 20px; line-height: 1.5; letter-spacing: .06em; }
.site-footer__nav { display: flex; gap: 56px; }
.site-footer__nav ul { display: flex; flex-direction: column; gap: 16px; font-size: 14px; line-height: 1; }
.site-footer__nav a:hover { opacity: .7; }
.site-footer__copy { font-size: 12px; line-height: 1; opacity: .6; }
.site-footer__copy small { font-size: inherit; }

/* =========================================================
   Tablet（1180px 以下）— 余白だけ調整
   ========================================================= */
@media (max-width: 1180px) {
  .site-header { padding-inline: 32px; }
  .global-nav, .global-nav__list { gap: 24px; }
  .mission__inner { gap: 48px; }
  .mission__image { flex-basis: 44%; }
  .works__list { grid-template-columns: repeat(2, 1fr); }
  .split { gap: 48px; }
  .split__head { flex-basis: 240px; }
}

/* =========================================================
   SP（767px 以下）— Figma「SP 375」準拠
   ========================================================= */
@media (max-width: 767px) {
  :root { --section-py: 64px; }
  body { font-size: 15px; }
  .sp-only { display: inline; }
  .pc-only { display: none; }

  .heading__title { font-size: 26px; }
  .lead { font-size: 15px; }
  .btn { padding: 15px 24px; font-size: 14px; }

  /* Header + drawer */
  .site-header { padding: 14px 20px; }
  .site-header__logo { gap: 10px; }
  .site-header__logo img:first-child { width: 58px; height: 32px; }
  .site-header__logo img:last-child { width: 96px; height: 11px; }
  .site-header__menu {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
    width: 38px; height: 38px; padding: 0; border: 0; border-radius: 50%; background: var(--c-navy); cursor: pointer;
  }
  .site-header__menu span { display: block; width: 18px; height: 1.5px; background: var(--c-white); transition: transform .2s, opacity .2s; }
  .site-header__menu[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .site-header__menu[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .site-header__menu[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
  .global-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 24px;
    padding: 24px var(--gutter) 32px;
    background: var(--c-white); border-bottom: 1px solid var(--c-border);
    box-shadow: 0 12px 24px rgba(17, 36, 86, .08);
    visibility: hidden; opacity: 0; transform: translateY(-8px); transition: opacity .2s, transform .2s, visibility .2s;
  }
  .global-nav.is-open { visibility: visible; opacity: 1; transform: none; }
  .global-nav__list { flex-direction: column; gap: 0; font-size: 15px; }
  .global-nav__list a { display: block; padding: 16px 0; border-bottom: 1px solid var(--c-border); }

  /* Hero */
  .hero { height: auto; min-height: 640px; }
  .hero::after { background: linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.6) 55%, rgba(255,255,255,.1) 100%); }
  .hero__copy { gap: 18px; padding: 64px var(--gutter) 56px; }
  .hero__title { gap: 12px; font-size: 28px; }
  .fraction { padding-inline: 4px; font-size: 18px; }
  .fraction span:first-child::after { width: 16px; height: 1.5px; }
  .hero__cite { font-size: 15px; }
  .hero__lead { margin-top: 0; font-size: 15px; }
  .hero__buttons { flex-direction: column; gap: 12px; }
  .hero__buttons .btn--light { border: 1.5px solid var(--c-magenta); }

  /* Mission */
  .mission__inner { flex-direction: column; align-items: stretch; gap: 24px; }
  .mission__image { flex: none; height: auto; aspect-ratio: 520 / 420; }
  .mission__text { gap: 24px; }
  .mission__title { font-size: 28px; }
  .mission__sub { font-size: 16px; }

  /* Cards / Steps / Works */
  .psychology .container, .service .container, .works .container { gap: 32px; }
  .psychology__cards, .steps, .works__list { grid-template-columns: 1fr; gap: 24px; }
  .card__image { height: auto; aspect-ratio: 370 / 180; }
  .psychology .card { display: block; }
  .psychology .card__image { height: auto; }
  .card__body { padding: 24px; }
  .card__title { font-size: 18px; }
  .card__text { font-size: 14px; }
  .service .heading { position: static; }
  .service__image { height: auto; aspect-ratio: 1400 / 719; }
  .step { padding: 28px 24px; }
  .step__no { font-size: 28px; }
  .step__title { font-size: 20px; }
  .step__text { font-size: 14px; }
  .head-row { flex-direction: column; align-items: flex-start; }
  .work-card__thumb { height: auto; aspect-ratio: 327 / 176; }
  .work-card__title { font-size: 15px; }

  /* News / Media: 日付・タグを1行目、タイトルを2行目に */
  .split { flex-direction: column; gap: 32px; }
  .split__head { flex: none; gap: 24px; }
  .news-item a { flex-wrap: wrap; gap: 10px 12px; padding-block: 20px; }
  .news-item__cat { flex: 0 0 auto; }
  .news-item__icon { order: 3; margin-left: auto; }
  .news-item__title { order: 4; flex-basis: 100%; font-size: 15px; }
  .media-item { flex-direction: column; align-items: flex-start; gap: 10px; }

  /* Blog */
  .blog-banner { flex-direction: column; align-items: flex-start; gap: 24px; padding: 28px 24px; }
  .blog-banner__title { font-size: 20px; }
  .blog-banner__lead { font-size: 14px; }
  .blog-banner .btn--outline { align-self: flex-start; }

  /* Clients */
  .clients .container { gap: 32px; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .logo-grid li { padding: 12px; }
  .logo-grid img { width: 120px; height: 62px; }

  /* Contact CTA（SPはタグを出さない） */
  .contact-cta { padding: 56px 0; }
  .contact-cta__box { gap: 20px; padding: 40px 24px; border-radius: 16px; }
  .contact-cta__title { font-size: 24px; }
  .contact-cta__lead { font-size: 13px; }
  .contact-cta__tags { display: none; }
  .contact-cta__actions { flex-direction: column; align-self: stretch; gap: 20px; }
  .contact-cta__actions .btn { width: 100%; }
  .contact-cta__tel { font-size: 13px; }

  /* Footer */
  .site-footer { padding-block: 48px; }
  .site-footer__inner { flex-direction: column; gap: 28px; margin-bottom: 28px; }
  .site-footer__name { font-size: 16px; }
  .site-footer__company p:not(.site-footer__name) { font-size: 12px; }
  .site-footer__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 40px; }
  .site-footer__nav ul { gap: 14px; font-size: 13px; }
  .site-footer__copy { font-size: 11px; }
}