/* =============================================
       SAVE THE REEF - スタイルシート
       【編集ガイド】色変更 → :root、画像変更 → images/ フォルダ
       ============================================= */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --color-ocean-deep: #0c2d48;
      --color-ocean-dark: #145374;
      --color-ocean: #1a6e8e;
      --color-ocean-light: #5ba3c9;
      --color-ocean-pale: #b8dce8;
      --color-ocean-mist: #e4f2f7;
      --color-coral: #e8825c;
      --color-coral-light: #f0a88a;
      --color-sand: #f7f3ea;
      --color-ivory: #fbfaf8;
      --color-gold: #c9a84c;
      --color-text: #2a2a2e;
      --color-text-soft: #5a5a62;
      --color-line: #c5d8e0;
      --color-white: #ffffff;
      --color-black: #1a1a1a;
      --font-jp: 'Noto Serif JP', 'Yu Mincho', serif;
      --font-en: 'Inter', 'Noto Sans JP', sans-serif;
      --font-display: 'Cormorant Garamond', serif;
      --shadow-soft: 0 8px 30px rgba(12, 45, 72, 0.08);
      --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
      --shadow-deep: 0 20px 60px rgba(12, 45, 72, 0.12);
      --radius: 6px;
      --radius-lg: 12px;
      --max-width: 1200px;
      --header-h: 72px;
    }

    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: var(--font-jp); font-weight: 400; color: var(--color-text);
      background: var(--color-ivory); line-height: 1.8;
      -webkit-font-smoothing: antialiased; overflow-x: hidden;
    }
    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; transition: opacity .3s ease; }
    a:hover { opacity: .7; }
    button { font-family: inherit; cursor: pointer; border: none; background: none; }
    ul { list-style: none; }
    .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 40px; }

    /* 共通セクション */
    .section { padding: 100px 0; }
    .section-head { text-align: center; margin-bottom: 60px; }
    .section-label {
      font-family: var(--font-en); font-size: 0.85rem; letter-spacing: 0.4em;
      color: var(--color-ocean); text-transform: uppercase; margin-bottom: 16px; font-weight: 500;
    }
    .section-title {
      font-family: var(--font-jp); font-size: clamp(1.5rem, 3.5vw, 2.4rem); font-weight: 500;
      letter-spacing: 0.08em; color: var(--color-ocean-deep); margin-bottom: 20px; line-height: 1.6;
    }
    .section-subtitle {
      font-size: 0.95rem; color: var(--color-text-soft); max-width: 700px; margin: 0 auto; line-height: 2;
    }

    /* アニメーション */
    .fade-up {
      opacity: 0; transform: translateY(40px);
      transition: opacity 0.8s cubic-bezier(0.4,0,0.2,1), transform 0.8s cubic-bezier(0.4,0,0.2,1);
    }
    .fade-up.is-visible { opacity: 1; transform: translateY(0); }

    /* ヘッダー */
    .site-header {
      position: fixed; inset: 0 0 auto 0; height: var(--header-h);
      background: rgba(251,250,248,0.92); backdrop-filter: blur(12px); z-index: 100;
      border-bottom: 1px solid rgba(197,216,224,0.3); transition: background .3s ease, box-shadow .3s ease;
    }
    .site-header.scrolled { box-shadow: 0 2px 30px rgba(0,0,0,0.06); background: rgba(251,250,248,0.98); }
    .header-inner {
      max-width: var(--max-width); margin: 0 auto; height: 100%; padding: 0 40px;
      display: flex; justify-content: space-between; align-items: center;
    }
    .logo { display: flex; flex-direction: column; line-height: 1; }
    .logo-main { font-family: var(--font-display); font-size: 1.5rem; font-weight: 500; letter-spacing: 0.05em; color: var(--color-ocean-deep); }
    .logo-sub { font-family: var(--font-en); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--color-ocean); margin-top: 4px; text-transform: uppercase; }
    .nav-list { display: flex; gap: 28px; }
    .nav-list a {
      font-family: var(--font-en); font-size: 0.85rem; letter-spacing: 0.12em;
      color: var(--color-ocean-deep); position: relative; padding: 4px 0;
    }
    .nav-list a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--color-coral); transition: width .3s ease; }
    .nav-list a:hover { opacity: 1; }
    .nav-list a:hover::after { width: 100%; }
    .nav-toggle { display: none; width: 32px; height: 32px; flex-direction: column; justify-content: center; gap: 6px; }
    .nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-ocean-deep); transition: transform .3s ease, opacity .3s ease; }

    /* ヒーロー */
    .hero { position: relative; height: 100vh; min-height: 600px; overflow: hidden; color: var(--color-white); }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; background-size: cover; background-position: center;
      opacity: 0; transform: scale(1.08); transition: opacity 1.8s ease, transform 8s ease;
    }
    .hero-slide.is-active { opacity: 1; transform: scale(1); }
    .hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(12,45,72,0.05) 0%, rgba(12,45,72,0.15) 50%, rgba(12,45,72,0.35) 100%); }
    .hero-content { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 0 24px; }
    .hero-tag { font-family: var(--font-en); font-size: 0.85rem; letter-spacing: 0.4em; margin-bottom: 32px; opacity: 0.9; border: 1px solid rgba(255,255,255,0.35); padding: 10px 28px; border-radius: 100px; backdrop-filter: blur(4px); text-transform: uppercase; }
    .hero-title { margin-bottom: 32px; }
    .hero-title-en { display: block; font-family: var(--font-display); font-size: clamp(2.8rem,7vw,5rem); font-weight: 400; letter-spacing: 0.08em; line-height: 1.15; margin-bottom: 16px; }
    .hero-title-jp { display: block; font-family: var(--font-jp); font-size: clamp(1rem,2.2vw,1.5rem); font-weight: 300; letter-spacing: 0.25em; line-height: 1.5; }
    .hero-lead { font-size: clamp(0.85rem,1.4vw,1rem); letter-spacing: 0.08em; line-height: 2.2; opacity: 0.85; max-width: 600px; }
    .hero-scroll { position: absolute; bottom: 40px; font-family: var(--font-en); font-size: 0.8rem; letter-spacing: 0.35em; color: var(--color-white); text-transform: uppercase; }
    .hero-scroll::after { content: ''; display: block; width: 1px; height: 48px; background: var(--color-white); margin: 14px auto 0; animation: scrollLine 2.5s ease-in-out infinite; transform-origin: top; }
    @keyframes scrollLine { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(0); transform-origin: bottom; } }

    /* イントロ */
    .intro-section {
      background: url('images/coral-reef-hero-web.jpg') center/cover no-repeat;
      position: relative; overflow: hidden; padding: 100px 0;
    }
    .intro-section::before {
      content: ''; position: absolute; inset: 0;
      background: rgba(12,45,72,0.55); z-index: 1;
    }
    .intro-section .container { position: relative; z-index: 2; }
    .intro-section .section-title { color: var(--color-white); }
    .intro-body { max-width: 800px; margin: 0 auto; text-align: center; }
    .intro-body p { font-size: 0.95rem; line-height: 2.4; color: rgba(255,255,255,0.9); margin-bottom: 16px; }

    /* セーブ・ザ・リーフ ロゴショーケース */
    .reef-logo-showcase {
      background: var(--color-white); padding: 40px 24px; text-align: center;
    }
    .reef-logo-showcase img.reef-section-img {
      max-width: 900px; width: 100%; height: auto; display: block; margin: 0 auto;
    }

    /* さんご畑ストーリー */
    .story-section { background: var(--color-ocean-mist); position: relative; padding: 80px 0 60px; }
    .story-layout {
      display: grid; grid-template-columns: 1fr; gap: 32px;
      max-width: 1100px; margin: 0 auto; padding: 0 24px;
    }
    @media (min-width:900px) {
      .story-layout {
        grid-template-columns: 1fr 280px; gap: 36px; align-items: end;
      }
    }
    /* 左カラム: キャッチコピー＋メッセージ本文 */
    .story-left-text { display: flex; flex-direction: column; }
    .story-text {}
    .story-text h3 {
      font-size: 1.5rem; font-weight: 600; color: var(--color-ocean-deep);
      margin-bottom: 24px; line-height: 1.7; letter-spacing: 0.05em;
      text-align: left;
    }
    .story-text p {
      font-size: 0.92rem; line-height: 2.2; color: var(--color-text-soft); margin-bottom: 16px;
      font-weight: 600;
    }
    /* 右カラム: 金城さん写真（上）＋珊瑚写真2枚横並び（下） */
    .story-right-photos {
      display: flex; flex-direction: column; gap: 12px; align-items: center;
      justify-content: flex-end;
    }
    .story-kinjo-block {
      width: 170px; overflow: hidden; border-radius: 8px;
      box-shadow: 0 4px 16px rgba(12,45,72,0.12);
    }
    .story-kinjo-block img { width: 100%; height: auto; object-fit: cover; display: block; }
    .story-kinjo-name {
      display: block; font-family: var(--font-jp); font-size: 0.7rem;
      color: var(--color-text-soft); margin-top: 4px;
      letter-spacing: 0.05em; text-align: center;
    }
    .story-coral-row {
      display: flex; gap: 10px; justify-content: center;
    }
    .story-coral-photo {
      width: 160px; height: 120px; overflow: hidden; border-radius: 8px;
      box-shadow: 0 4px 16px rgba(12,45,72,0.12);
    }
    .story-coral-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
    @media (max-width:899px) {
      .story-kinjo-block { width: 145px; }
      .story-coral-photo { width: 135px; height: 105px; }
      .story-right-photos { flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 10px; }
    }

    /* 寄付バナー（珊瑚イラスト付き） */
    .donation-banner {
      background: var(--color-white); position: relative; text-align: center;
      padding: 0; overflow: hidden;
    }
    .donation-wave { width: 100%; display: block; margin-bottom: -2px; }
    .donation-inner { position: relative; padding: 30px 24px 80px; z-index: 2; min-height: 320px; }
    .don-il { position: absolute; pointer-events: none; z-index: 3; }
    .don-il img, .don-il svg { width: 100%; height: auto; display: block; }
    .don-il-lt { left: 0; top: -20px; width: clamp(120px, 18vw, 260px); opacity: 0.9; }
    .don-il-lm { left: 0; bottom: 20%; width: clamp(100px, 15vw, 220px); }
    .don-il-lb { left: 2%; bottom: 0; width: clamp(80px, 12vw, 180px); opacity: 0.8; }
    .don-il-lf { left: clamp(80px, 14vw, 200px); top: 15px; width: clamp(50px, 7vw, 100px); z-index: 4; }
    .don-il-ls { left: clamp(40px, 8vw, 120px); bottom: 30%; width: clamp(40px, 5vw, 80px); opacity: 0.7; }
    .don-il-rt { right: 0; top: -10px; width: clamp(100px, 15vw, 220px); opacity: 0.85; }
    .don-il-rm { right: 0; bottom: 15%; width: clamp(120px, 18vw, 260px); }
    .don-il-rb { right: 2%; bottom: 0; width: clamp(80px, 12vw, 180px); opacity: 0.8; }
    .don-il-rf { right: clamp(80px, 14vw, 200px); top: 25px; width: clamp(50px, 7vw, 100px); z-index: 4; }
    .don-il-bc { left: 50%; bottom: 0; transform: translateX(-50%); width: clamp(120px, 16vw, 240px); opacity: 0.6; }
    .don-il-bl { left: 15%; bottom: 0; width: clamp(80px, 10vw, 160px); opacity: 0.5; }
    .don-il-br { right: 15%; bottom: 0; width: clamp(80px, 10vw, 160px); opacity: 0.5; }
    .don-il-star { right: clamp(140px, 20vw, 300px); top: 10px; width: clamp(25px, 3vw, 45px); opacity: 0.7; }
    .donation-icon { width: 64px; height: 64px; margin: 0 auto 20px; position: relative; z-index: 5; }
    .donation-icon svg { width: 100%; height: 100%; }
    .donation-banner p {
      font-family: var(--font-jp); font-size: clamp(0.95rem, 1.8vw, 1.15rem);
      line-height: 2.2; letter-spacing: 0.08em; color: var(--color-text);
      max-width: 600px; margin: 0 auto; position: relative; z-index: 5;
    }
    @media (max-width:600px) {
      .don-il-lf, .don-il-rf, .don-il-ls, .don-il-star { display: none; }
      .donation-inner { padding: 20px 24px 60px; }
    }

    /* コメント */
    .comment-section { background: var(--color-white); position: relative; overflow: hidden; padding-bottom: 280px; }
    .comment-body { max-width: 750px; margin: 0 auto; position: relative; }
    .comment-text { font-size: 0.95rem; line-height: 2.4; color: var(--color-text-soft); margin-bottom: 24px; text-align: justify; font-weight: 600; }
    .comment-text p { margin-bottom: 20px; }
    .comment-signature { text-align: right; margin-top: 40px; font-size: 0.95rem; color: var(--color-ocean-deep); }
    .comment-signature .name { font-size: 1.1rem; font-weight: 500; letter-spacing: 0.1em; }
    .comment-illust { position: absolute; z-index: 1; pointer-events: none; }
    .comment-illust img { width: 100%; height: auto; display: block; }
    .comment-il-1 { left: 0; bottom: 0; width: clamp(80px, 10vw, 140px); }
    .comment-il-2 { right: 0; bottom: 0; width: clamp(80px, 10vw, 140px); }
    .comment-il-3 { left: 50%; bottom: 0; transform: translateX(-50%); width: clamp(100px, 14vw, 200px); opacity: 0.7; }
    .comment-il-4 { left: 0; top: 30%; width: clamp(80px, 10vw, 150px); opacity: 0.5; }
    .comment-il-5 { right: 0; top: 20%; width: clamp(80px, 10vw, 150px); opacity: 0.5; }
    .comment-il-6 { left: 5%; bottom: 15%; width: clamp(60px, 8vw, 120px); opacity: 0.6; }
    .comment-il-7 { right: 5%; bottom: 20%; width: clamp(60px, 8vw, 120px); opacity: 0.6; }
    .comment-il-8 { left: 10%; bottom: 0; width: clamp(80px, 10vw, 140px); opacity: 0.5; }
    .comment-il-9 { right: 10%; bottom: 0; width: clamp(80px, 10vw, 140px); opacity: 0.5; }
    .comment-il-10 { left: 50%; bottom: 5%; transform: translateX(-80%); width: clamp(50px, 7vw, 100px); opacity: 0.45; }
    .comment-il-11 { right: 20%; top: 10%; width: clamp(50px, 6vw, 90px); opacity: 0.4; }
    .comment-il-turtle { right: 3%; top: 5%; width: clamp(80px, 10vw, 140px); opacity: 0.35; }

    /* 販売期間（Summer Assortment横に統合） */
    .sales-note { font-size: 0.85rem; color: var(--color-text-soft); line-height: 2; text-align: center; max-width: 700px; margin: 0 auto; }
    .sweets-header-row {
      display: flex; align-items: baseline; justify-content: center; gap: 32px; flex-wrap: wrap;
    }
    .sweets-date {
      font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 600;
      color: var(--color-coral); letter-spacing: 0.08em; white-space: nowrap;
    }

    /* 商品セクション */
    .sweets-section { background: linear-gradient(180deg, var(--color-ivory) 0%, var(--color-white) 100%); position: relative; }
    .product-hero-img { width: 100%; max-width: 800px; margin: 0 auto 60px; border-radius: var(--radius-lg); box-shadow: var(--shadow-deep); }
    .product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; margin-bottom: 60px; }
    .product-card { text-align: center; background: var(--color-white); border-radius: var(--radius-lg); padding: 24px 16px; box-shadow: var(--shadow-card); transition: transform 0.3s ease, box-shadow 0.3s ease; }
    .product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-deep); }
    img.product-card-img { width: 160px; height: 160px; object-fit: cover; border-radius: 50%; margin: 0 auto 16px; display: block; }
    img.product-card-img.full-shape { object-fit: contain; border-radius: 0; width: 140px; height: 140px; }
    img.product-card-img.full-shape.rotated { transform: rotate(-15deg); width: 170px; height: 170px; }
    .product-card-name { font-size: 0.9rem; font-weight: 500; color: var(--color-ocean-deep); letter-spacing: 0.05em; margin-bottom: 8px; }
    .product-card-desc { font-size: 0.8rem; color: var(--color-text-soft); line-height: 1.7; }
    .assortment-box-photo { mix-blend-mode: multiply; }
    .assortment-box-photo-orig {
      width: 100%; max-width: 600px; margin: 0 auto 48px; display: block;
      border-radius: var(--radius-lg);
    }
    .assortment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 48px; max-width: 1200px; margin: 0 auto; }
    .assortment-card { background: #ffffff; border-radius: 0; padding: 24px 0; text-align: center; box-shadow: none; border: none; }
    .assortment-card .assortment-box-photo { max-width: 100%; width: 100%; margin-bottom: 28px; border-radius: var(--radius-lg); }
    .assortment-turtle { display: block; max-width: 260px; margin: 40px auto 0; opacity: 0.85; }
    .assortment-card-title { font-family: var(--font-display); font-size: 2.2rem; color: var(--color-ocean-deep); margin-bottom: 8px; }
    .assortment-card-desc { font-size: 0.9rem; color: var(--color-text-soft); margin-bottom: 16px; }
    .assortment-card-price { font-size: 1.5rem; font-weight: 600; color: var(--color-coral); letter-spacing: 0.02em; }
    .assortment-card-tax { font-size: 0.8rem; color: var(--color-text-soft); margin-top: 4px; }
    .assortment-card-contents { font-size: 0.82rem; color: var(--color-text-soft); margin-top: 16px; line-height: 1.9; border-top: 1px solid var(--color-line); padding-top: 12px; }

    /* フッター */
    .site-footer { background: var(--color-ocean-deep); color: rgba(255,255,255,0.7); padding: 60px 24px 40px; text-align: center; }
    .footer-logo-img { height: 40px; margin: 0 auto 20px; filter: brightness(0) invert(1); }
    .footer-sub { font-family: var(--font-en); font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase; margin-bottom: 30px; color: var(--color-ocean-pale); }
    .footer-links { display: flex; justify-content: center; gap: 32px; margin-bottom: 40px; flex-wrap: wrap; }
    .footer-links a { font-size: 0.85rem; letter-spacing: 0.08em; color: rgba(255,255,255,0.6); transition: color .3s ease; }
    .footer-links a:hover { color: var(--color-white); opacity: 1; }
    .footer-copy { font-size: 0.75rem; opacity: 0.5; letter-spacing: 0.05em; }

    .coral-divider { text-align: center; padding: 20px 0; color: var(--color-coral-light); font-size: 1.5rem; letter-spacing: 0.5em; opacity: 0.5; }

    /* レスポンシブ */
    @media (max-width: 900px) {
      .story-top { gap: 24px; }
      .story-circle { width: 180px; height: 180px; }
      .story-okinawa { font-size: 3rem; }
      .product-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 20px; }
    }
    @media (max-width: 768px) {
      .container { padding: 0 20px; }
      .section { padding: 70px 0; }
      .section-head { margin-bottom: 40px; }
      .nav-toggle { display: flex; }
      .nav-list { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(251,250,248,0.98); backdrop-filter: blur(12px); flex-direction: column; padding: 20px 40px; gap: 16px; border-bottom: 1px solid var(--color-line); }
      .nav-list.is-open { display: flex; }
      .story-circle { width: 150px; height: 150px; }
      .story-okinawa { font-size: 2.5rem; }
      .story-top { gap: 20px; }
      .story-body h3 { font-size: 1.2rem; }
      .assortment-grid { grid-template-columns: 1fr; gap: 24px; }
      .hero-tag { font-size: 0.75rem; padding: 8px 20px; }
      .reef-qr-area { flex-direction: column; }
    }
    @media (max-width: 480px) {
      .product-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .product-card { padding: 16px 12px; }
      .product-card-img { width: 80px; height: 80px; }
    }