/* ============================================================
  CSS カスタムプロパティ
  ・色・フォント・余白などの変数。全体のトーンはここで管理する。
============================================================ */
:root {
  /* カラー */
  --clr-primary:       #39aac8;
  --clr-primary-dark:  #2689a4;
  --clr-primary-light: #e4f5fb;
  --clr-accent:        #f5a623;
  --clr-accent-dark:   #d48c0e;
  --clr-text:          #2c3e50;
  --clr-text-muted:    #687a8c;
  --clr-bg:            #f7fbfd;
  --clr-bg-alt:        #edf6fb;
  --clr-white:         #ffffff;
  --clr-border:        #cce9f5;

  /* フォント */
  --font-sans:   'Noto Sans JP', sans-serif;
  --font-serif:  'Noto Serif JP', serif;

  /* 余白スケール */
  --sp-xs:   0.5rem;
  --sp-sm:   1rem;
  --sp-md:   1.5rem;
  --sp-lg:   2rem;
  --sp-xl:   3rem;
  --sp-2xl:  4.5rem;
  --sp-3xl:  6rem;

  /* コンテナ */
  --container-max:  1100px;
  --container-px:   1.25rem;

  /* 角丸 */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-full: 9999px;

  /* 影 */
  --shadow-sm:  0 2px 10px rgba(57, 170, 200, 0.10);
  --shadow-md:  0 6px 24px rgba(57, 170, 200, 0.16);
  --shadow-lg:  0 12px 48px rgba(57, 170, 200, 0.22);

  /* トランジション */
  --transition: 0.3s ease;
}


/* ============================================================
  リセット & ベース
============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--clr-text);
  background-color: var(--clr-bg);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
}


/* ============================================================
  レイアウト
============================================================ */
.l-container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}


/* ============================================================
  画像プレースホルダー
  ・実画像に差し替える際は .img-placeholder をラップするdivごと
    <img src="..." alt="..."> に置き換えてください。
============================================================ */
.img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #c4e8f5 0%, #e8f6fc 50%, #cdedf8 100%);
  border: 2px dashed var(--clr-primary);
  border-radius: var(--radius-md);
  text-align: center;
}

.img-placeholder__label {
  font-size: 0.75rem;
  color: var(--clr-primary-dark);
  font-weight: 500;
  line-height: 1.6;
}

/* バリアント */
.img-placeholder--hero {
  width: 100%;
  height: 100%;
  border-radius: 0;
  border: none;
  background: linear-gradient(160deg, #124f6b 0%, #2589a4 45%, #6dcde6 100%);
}

.img-placeholder--hero .img-placeholder__label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

.img-placeholder--square {
  width: 100%;
  aspect-ratio: 1 / 1;
}

.img-placeholder--product {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 0;
}

.img-placeholder--wide {
  width: 100%;
  aspect-ratio: 4 / 3;
}

.img-placeholder--icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
}


/* ============================================================
  セクション共通
============================================================ */
section {
  padding-block: var(--sp-3xl);
}

.section-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-primary);
  text-align: center;
  margin-bottom: var(--sp-xs);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4.5vw, 2rem);
  font-weight: 700;
  line-height: 1.55;
  text-align: center;
  color: var(--clr-text);
  margin-bottom: var(--sp-lg);
}

.section-title--left {
  text-align: left;
}


/* ============================================================
  ボタン
============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

.btn--primary {
  background-color: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}
.btn--primary:hover {
  background-color: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background-color: var(--clr-accent);
  color: var(--clr-white);
  border-color: var(--clr-accent);
}
.btn--accent:hover {
  background-color: var(--clr-accent-dark);
  border-color: var(--clr-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(245, 166, 35, 0.35);
}

.btn--ghost {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--clr-white);
  border-color: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(4px);
}
.btn--ghost:hover {
  background-color: rgba(255, 255, 255, 0.25);
  border-color: var(--clr-white);
  transform: translateY(-2px);
}

.btn--white {
  background-color: var(--clr-white);
  color: var(--clr-primary);
  border-color: var(--clr-white);
}
.btn--white:hover {
  background-color: var(--clr-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline-white {
  background-color: transparent;
  color: var(--clr-white);
  border-color: rgba(255, 255, 255, 0.65);
}
.btn--outline-white:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: var(--clr-white);
  transform: translateY(-2px);
}

.btn__icon {
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
}


/* ============================================================
  タグ
============================================================ */
.tag {
  display: inline-block;
  padding: 0.3rem 0.875rem;
  background-color: var(--clr-primary-light);
  color: var(--clr-primary-dark);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
}


/* ============================================================
  スクロールアニメーション（IntersectionObserver で制御）
============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* ============================================================
  ヘッダー
============================================================ */
.header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  transition: box-shadow var(--transition);
}

.header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header__logo-img {
  height: 36px;
  width: auto;
}

.header__logo-text {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--clr-text);
}

.header__nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.header__nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  position: relative;
  transition: color var(--transition);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--clr-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition);
}

.header__nav-link:hover {
  color: var(--clr-primary);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__nav-link--cta {
  padding: 0.5rem 1.25rem;
  background-color: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-full);
  font-weight: 700;
  transition: background-color var(--transition), transform var(--transition);
}

.header__nav-link--cta::after {
  display: none;
}

.header__nav-link--cta:hover {
  background-color: var(--clr-primary-dark);
  color: var(--clr-white);
  transform: translateY(-1px);
}


/* ============================================================
  1. ヒーロー
============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: 0;
}

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

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

.hero__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.hero__slide.is-active {
  opacity: 1;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(12, 52, 70, 0.65) 0%,
    rgba(20, 80, 100, 0.45) 60%,
    rgba(12, 52, 70, 0.70) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-top: 96px;
  padding-bottom: 96px;
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--sp-sm);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 700;
  color: var(--clr-white);
  line-height: 1.45;
  margin-bottom: var(--sp-md);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
}

.hero__subtitle {
  font-size: clamp(0.9375rem, 2.5vw, 1.0625rem);
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.9;
  margin-bottom: var(--sp-xl);
  max-width: 520px;
}

.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  align-items: flex-start;
}

/* スクロールインジケーター */
.hero__scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 1;
}

.hero__scroll-text {
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.6);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.6), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}


/* ============================================================
  2. 販売者紹介
============================================================ */
.about {
  background-color: var(--clr-white);
}

.about__inner {
  display: grid;
  gap: var(--sp-xl);
  align-items: center;
}

.about__image-wrap {
  max-width: 360px;
  margin-inline: auto;
  width: 100%;
}

.about__image {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.about__text {
  color: var(--clr-text-muted);
  line-height: 1.9;
  margin-bottom: var(--sp-sm);
}

.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-xs);
  margin-top: var(--sp-md);
}


/* ============================================================
  3. 選ばれる理由
============================================================ */
.reasons {
  background-color: var(--clr-bg-alt);
}

.reasons__grid {
  display: grid;
  gap: var(--sp-md);
  margin-top: var(--sp-xl);
}

.reason-card {
  background-color: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl) var(--sp-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.reason-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.reason-card__icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--sp-md);
}

.reason-card__title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: var(--sp-sm);
  color: var(--clr-text);
}

.reason-card__text {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.85;
}


/* ============================================================
  4. 販売中のメダカ
============================================================ */
.products {
  position: relative;
  background: linear-gradient(180deg, #0e3a50 0%, #165c78 45%, #0c3248 100%);
  overflow: hidden;
}

/* 水面からの光の差し込み */
.products::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 700px 280px at 22% 0%, rgba(80, 185, 220, 0.14) 0%, transparent 70%),
    radial-gradient(ellipse 500px 220px at 72% 5%, rgba(60, 160, 200, 0.1) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* 気泡 */
.bubble {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.28);
  pointer-events: none;
  z-index: 0;
  animation: bubbleRise var(--duration, 6s) ease-in infinite;
  animation-play-state: paused;
}

@keyframes bubbleRise {
  0%   { transform: translateY(0) translateX(0);                    opacity: 0;   }
  12%  { opacity: 0.85; }
  88%  { opacity: 0.45; }
  100% { transform: translateY(-2800px) translateX(var(--sway, 12px)); opacity: 0; }
}

.products__inner {
  position: relative;
  z-index: 1;
}

/* テキストを白系に調整 */
.products .section-label {
  color: rgba(255, 255, 255, 0.55);
}

.products .section-title {
  color: white;
}

.products__lead {
  text-align: center;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: var(--sp-xl);
}

.products__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
}

.product-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--clr-bg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.product-card__image-wrap {
  position: relative;
}

/* 実画像に差し替えた際の img スタイル */
.product-card__image-wrap img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.product-card__badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.25rem 0.625rem;
  background-color: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
}

.product-card__badge--rare {
  background-color: #9b59b6;
}

.product-card__badge--new {
  background-color: var(--clr-accent);
}

.product-card__body {
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card__name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  line-height: 1.4;
  color: var(--clr-text);
  text-align: center;
}

.product-card__desc {
  font-size: 0.8375rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
  margin-bottom: var(--sp-sm);
  flex: 1;
}

.product-card__price {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary-dark);
}

/* ===== Products セクション内カードの水槽スタイル ===== */
.products .product-card {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.products .product-card:hover {
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

.products .product-card__name {
  color: white;
}

.products .product-card__desc {
  color: rgba(255, 255, 255, 0.65);
}

.products .product-card__price {
  color: #6dd8f0;
}

.products__cta {
  text-align: center;
  margin-top: var(--sp-xl);
}


/* ============================================================
  5. こだわり
============================================================ */
.commitment {
  background-color: var(--clr-bg-alt);
}

.commitment__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3xl);
  margin-top: var(--sp-xl);
}

.commitment__item {
  display: grid;
  gap: var(--sp-lg);
}

/* 実画像に差し替えた際の img スタイル */
.commitment__item-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.commitment__item-image .img-placeholder {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.commitment__item-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px var(--clr-primary-light);
  margin-bottom: var(--sp-xs);
}

.commitment__item-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: var(--sp-sm);
  color: var(--clr-text);
}

.commitment__item-text {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  line-height: 1.9;
}


/* ============================================================
  6. 購入の流れ
============================================================ */
.flow {
  background-color: var(--clr-white);
}

.flow__steps {
  margin-top: var(--sp-xl);
  position: relative;
  padding-left: 3.75rem;
}

/* タイムラインの縦線 */
.flow__steps::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-primary), var(--clr-primary-light));
  border-radius: var(--radius-full);
}

.flow__step {
  display: flex;
  gap: var(--sp-md);
  padding-bottom: var(--sp-xl);
  position: relative;
}

.flow__step:last-child {
  padding-bottom: 0;
}

.flow__step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--clr-primary);
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
  position: absolute;
  left: -3.75rem;
  top: 0;
  box-shadow: 0 0 0 5px var(--clr-white), 0 0 0 7px var(--clr-primary-light);
}

.flow__step-title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
  color: var(--clr-text);
  padding-top: 0.75rem;
}

.flow__step-text {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.85;
}


/* ============================================================
  7. よくある質問
============================================================ */
.faq {
  background-color: var(--clr-bg-alt);
}

.faq__list {
  margin-top: var(--sp-xl);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.faq__item {
  background-color: var(--clr-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-md);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition);
}

.faq__question:hover {
  background-color: var(--clr-primary-light);
}

.faq__q-icon,
.faq__a-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1;
}

.faq__q-icon {
  background-color: var(--clr-primary);
  color: var(--clr-white);
}

.faq__a-icon {
  background-color: var(--clr-bg-alt);
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary-light);
}

.faq__q-text {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.5;
}

/* ＋ アイコン */
.faq__toggle-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
}

.faq__toggle-icon::before,
.faq__toggle-icon::after {
  content: '';
  position: absolute;
  background-color: var(--clr-primary);
  border-radius: var(--radius-full);
  top: 50%;
  left: 50%;
  transition: transform var(--transition), opacity var(--transition);
}

.faq__toggle-icon::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.faq__toggle-icon::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
}

/* 開いた状態：縦線を消して × → + に */
.faq__question[aria-expanded="true"] .faq__toggle-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq__answer {
  display: none;
}

.faq__answer-inner {
  display: flex;
  gap: var(--sp-sm);
  align-items: flex-start;
  padding: var(--sp-md);
  border-top: 1px solid var(--clr-border);
}

.faq__a-text {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.85;
  flex: 1;
}


/* ============================================================
  8. 最後の CTA
============================================================ */
.cta-final {
  position: relative;
  overflow: hidden;
  padding-block: var(--sp-3xl);
  text-align: center;
  background: linear-gradient(135deg, #124f6b 0%, #2589a4 45%, #39aac8 100%);
}

/* 水面のような装飾 */
.cta-final::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(255, 255, 255, 0.07) 0%, transparent 55%),
    radial-gradient(ellipse at 20% 75%, rgba(255, 255, 255, 0.05) 0%, transparent 45%);
  pointer-events: none;
}

.cta-final__eyebrow {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--sp-sm);
}

.cta-final__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4.5vw, 2rem);
  font-weight: 700;
  color: var(--clr-white);
  line-height: 1.55;
  margin-bottom: var(--sp-md);
}

.cta-final__text {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.83);
  line-height: 1.9;
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--sp-xl);
}

.cta-final__info {
  list-style: none;
  display: inline-flex;
  flex-direction: column;
  gap: 0.6rem;
  text-align: left;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: var(--sp-md) var(--sp-lg);
  margin-bottom: var(--sp-xl);
}

.cta-final__info-item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.9);
}

.cta-final__info-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55);
  min-width: 3.5em;
  flex-shrink: 0;
}

.cta-final__info-tel {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.cta-final__info-tel:hover {
  text-decoration: underline;
}

.cta-final__buttons {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  align-items: center;
}


/* ============================================================
  9. フッター
============================================================ */
.footer {
  background-color: #1e2d3a;
  color: rgba(255, 255, 255, 0.6);
  padding-block: var(--sp-xl);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-md);
  text-align: center;
}

.footer__top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-md);
  width: 100%;
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--clr-white);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.625rem var(--sp-md);
}

.footer__nav-link {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition);
}

.footer__nav-link:hover {
  color: var(--clr-white);
}

.footer__social {
  display: flex;
  gap: var(--sp-sm);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition: background-color var(--transition), color var(--transition);
}

.footer__social-link:hover {
  background-color: var(--clr-primary);
  color: var(--clr-white);
}

.footer__copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
}


/* ============================================================
  フローティング CTA（ヒーローを過ぎたら表示）
============================================================ */
.floating-cta {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 90;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
}

.floating-cta.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.floating-cta__btn {
  display: inline-flex;
  align-items: center;
  padding: 0.875rem 1.5rem;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: var(--clr-white);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(57, 170, 200, 0.45);
  transition: transform var(--transition), box-shadow var(--transition);
}

.floating-cta__btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(57, 170, 200, 0.55);
}


/* ============================================================
  レスポンシブ：タブレット（480px〜）
============================================================ */
@media (min-width: 480px) {
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ============================================================
  レスポンシブ：タブレット横（768px〜）
============================================================ */
@media (min-width: 768px) {
  :root {
    --container-px: 2rem;
  }

  /* ヘッダー */
  .header__nav {
    display: flex;
  }

  /* ヒーロー */
  .hero__cta {
    flex-direction: row;
    flex-wrap: wrap;
  }

  /* 販売者紹介：2カラム */
  .about__inner {
    grid-template-columns: 1fr 1fr;
  }

  .about__image-wrap {
    max-width: none;
    margin-inline: 0;
  }

  /* 選ばれる理由：3カラム */
  .reasons__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* こだわり：左右交互 */
  .commitment__item {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--sp-xl);
  }

  .commitment__item--reverse .commitment__item-image {
    order: 2;
  }

  .commitment__item--reverse .commitment__item-content {
    order: 1;
  }

  /* 最後の CTA */
  .cta-final__buttons {
    flex-direction: row;
    justify-content: center;
  }
}


/* ============================================================
  レスポンシブ：デスクトップ（1024px〜）
============================================================ */
@media (min-width: 1024px) {
  /* 商品グリッド：4カラム */
  .products__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* 購入の流れ：コンテナを絞り込む */
  .flow__steps {
    max-width: 700px;
    margin-inline: auto;
  }
}