@charset "utf-8";

/* =========================================================
   株式会社MEBUKI コーポレートサイト
   Design tokens / base
   ========================================================= */

:root {
  /* Color */
  --bg:          #0a0b0c;  /* 基本背景 */
  --bg-alt:      #0e0f11;  /* SERVICE節(明度差で節を切り替える) */
  --bg-footer:   #060708;
  --fg:          #eceded;
  --fg-75:       rgba(236, 237, 237, 0.75);
  --fg-72:       rgba(236, 237, 237, 0.72);
  --fg-60:       rgba(236, 237, 237, 0.6);
  --fg-55:       rgba(236, 237, 237, 0.55);
  --fg-50:       rgba(236, 237, 237, 0.5);
  --fg-40:       rgba(236, 237, 237, 0.4);
  --fg-35:       rgba(236, 237, 237, 0.35);
  --fg-25:       rgba(236, 237, 237, 0.25);
  --accent:      #9fd6a8;  /* 芽吹きの緑。eyebrow・番号ラベル・ホバー・リンクのみに限定使用 */
  --line:        rgba(236, 237, 237, 0.12);
  --line-soft:   rgba(236, 237, 237, 0.1);

  /* Typography */
  --font-en: 'Space Grotesk', sans-serif;
  --font-jp: 'Zen Kaku Gothic New', sans-serif;

  /* Layout */
  --section-padding: clamp(120px, 18vh, 200px) 48px;
  --gutter: 48px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-jp);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--fg);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}
a:hover { color: var(--accent); }

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

/* 写真は常にコンテナを満たす(デザインリファレンスの image-slot 相当) */
.media {
  position: relative;
  overflow: hidden;
}
.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* =========================================================
   共通パーツ
   ========================================================= */

/* ロゴ: MEBUKI + INC. */
.logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-en);
}
.logo__name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.logo__suffix {
  font-size: 9px;
  letter-spacing: 0.32em;
  color: var(--fg-55);
}

/* セクションヘッダー: 緑ラベル + 罫線 + 番号 */
.section-head {
  display: flex;
  align-items: center;
  gap: 16px;
}
.section-head__label,
.eyebrow {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.44em;
  color: var(--accent);
}
.section-head__rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.section-head__num {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--fg-35);
}

/* セクション枠 */
.section {
  position: relative;
  padding: var(--section-padding);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section__inner {
  width: 100%;
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.h2 {
  margin: 0;
  font-size: clamp(30px, 3.8vw, 52px);
  font-weight: 900;
  line-height: 1.6;
  letter-spacing: 0.06em;
  text-wrap: pretty;
}

.body-text {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 2.4;
  letter-spacing: 0.1em;
  color: var(--fg-75);
}

/* ピル型ボタン */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border-radius: 999px;
  font-family: var(--font-jp);
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 640px;
  overflow: hidden;
  background: var(--bg);
}

.hero__media { position: absolute; inset: 0; }

/* 下部の文字帯域を必ず暗く保つスクリム(写真を差し替えても文字が潰れないための設計) */
.hero__scrim {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(10, 11, 12, 0.72) 0%,
    rgba(10, 11, 12, 0.28) 30%,
    rgba(10, 11, 12, 0.34) 55%,
    rgba(10, 11, 12, 0.88) 86%,
    rgba(10, 11, 12, 0.96) 100%
  );
}

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px var(--gutter);
  z-index: 3;
}

.nav {
  display: flex;
  align-items: center;
  gap: 40px;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.22em;
}
.nav a { color: rgba(236, 237, 237, 0.75); }
.nav a.is-current {
  color: var(--fg);
  border-bottom: 1px solid rgba(236, 237, 237, 0.6);
  padding-bottom: 3px;
}

.hero__copy {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 24px 12vh;
  pointer-events: none;
  z-index: 2;
}
.hero__eyebrow {
  margin: 0 0 20px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.44em;
  color: var(--accent);
}
.hero__title {
  margin: 0;
  font-size: clamp(38px, 5.4vw, 76px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.06em;
  text-wrap: pretty;
}
.hero__lead {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 2.2;
  letter-spacing: 0.14em;
  color: var(--fg-72);
}

/* スクロールインジケーター */
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  display: block;
  width: 1px;
  height: 44px;
  background: var(--fg-25);
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
}
.scroll-cue__bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 16px;
  background: var(--accent);
  animation: scrollPulse 2.4s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%   { transform: translateY(0);    opacity: 1; }
  70%  { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 0; }
}

/* =========================================================
   ABOUT (01)
   ========================================================= */

.about__body {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 40em;
  font-size: 15px;
  line-height: 2.4;
  letter-spacing: 0.1em;
  color: var(--fg-75);
}
.about__body p { margin: 0; }

.mission {
  display: flex;
  align-items: baseline;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding-top: 40px;
}
.mission__label {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--fg-40);
}
.mission__text {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

/* =========================================================
   SERVICE (02)
   ========================================================= */

.service { background: var(--bg-alt); }
.service__inner {
  max-width: 1080px;
  gap: 72px;
}
.service__head {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.service__h2 { font-size: clamp(28px, 3.4vw, 44px); }

/* 1pxの隙間を罫線に見せるグリッド(カード背景と gap 背景の明度差で表現) */
.cards {
  display: grid;
  /* min() で 320px 未満の極小画面でも横スクロールを出さない */
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.card {
  background: var(--bg-alt);
  display: flex;
  flex-direction: column;
}
.card__media {
  height: 240px;
  filter: grayscale(0.4) brightness(0.85);
}
.card__body {
  padding: 48px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  flex: 1;
}
.card__brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.card__mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}
.card__names {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.card__name {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.card__role {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--fg-40);
}
.card__title {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.6;
}
.card__text {
  margin: 0;
  font-size: 14px;
  line-height: 2.3;
  letter-spacing: 0.08em;
  color: var(--fg-72);
}
.card__link {
  margin-top: auto;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.card__link:hover { color: var(--fg); }

/* 準備中の予告表示。COMMUNITYの .band__pill と同じ言語で、カード内に収まるサイズ */
.card__pending {
  margin-top: auto;
  align-self: flex-start;
  border: 1px solid var(--fg-40);
  color: rgba(236, 237, 237, 0.85);
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.3em;
  padding: 13px 30px;
}

/* =========================================================
   COMMUNITY (03)
   ========================================================= */

.community { padding-bottom: 0; }

.band {
  position: relative;
  width: 100%;
  max-width: 1240px;
  height: clamp(320px, 48vh, 520px);
  margin-top: 88px;
}
.band__media {
  position: absolute;
  inset: 0;
  filter: grayscale(1) brightness(0.8);
}
.band__scrim {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(10, 11, 12, 0.3) 0%,
    rgba(10, 11, 12, 0.05) 40%,
    rgba(10, 11, 12, 0.75) 100%
  );
}
.band__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  text-align: center;
  pointer-events: none;
}
.band__label {
  margin: 0;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.44em;
  color: rgba(236, 237, 237, 0.8);
}
/* 参加導線は準備中の予告表示。リンクにはしない */
.band__pill {
  border: 1px solid var(--fg-40);
  color: rgba(236, 237, 237, 0.85);
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.3em;
  padding: 15px 36px;
}

/* =========================================================
   CONTACT
   ========================================================= */

.contact__inner {
  align-items: center;
  text-align: center;
  gap: 40px;
}
.contact__h2 { line-height: 1.5; }
.contact__text {
  margin: 0;
  font-size: 14px;
  line-height: 2.3;
  letter-spacing: 0.1em;
  color: var(--fg-72);
}
.contact__button {
  border: 1px solid var(--fg-50);
  color: var(--fg);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.1em;
  padding: 17px 44px;
}
.contact__button:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.contact__button .arrow { font-family: var(--font-en); }

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
  background: var(--bg-footer);
  padding: 64px var(--gutter) 40px;
}
.site-footer__inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.site-footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
}
.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.site-footer__brand .logo__name { font-size: 18px; }
.site-footer__tagline {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fg-50);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.22em;
}
.footer-nav a { color: var(--fg-60); }
.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line-soft);
  padding-top: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.site-footer__legal {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}
.copyright,
.site-footer__tag {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--fg-35);
}
.site-footer__notice {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--fg-50);
}

/* =========================================================
   Responsive
   ※ モバイルナビはデザイン未定義。現状はナビを縮小して収める最小対応
   ========================================================= */

@media (max-width: 900px) {
  .nav { gap: 24px; font-size: 11px; letter-spacing: 0.16em; }
}

@media (max-width: 720px) {
  :root { --gutter: 24px; --section-padding: clamp(96px, 14vh, 160px) 24px; }
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 24px var(--gutter);
  }
  .nav { gap: 18px; font-size: 10px; letter-spacing: 0.14em; }
  .card__body { padding: 32px 24px; }
  .mission { flex-direction: column; gap: 12px; }
  .band { margin-top: 56px; }
  .band__caption { bottom: 32px; gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-cue__bar { animation: none; opacity: 0.6; }
}