*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg: #F5F4F0;
      --ink: #111110;
      --mid: #6B6B68;
      --rule: #D8D7D2;
      --card: #EEECEA;
      --accent: #111110;
    }

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      /* ↓ 後から背景写真を入れるときはここを差し替え */
      /* background-image: url('your-photo.jpg');
         background-size: cover;
         background-position: center;
         background-attachment: fixed; */
      color: var(--ink);
      font-family: 'Noto Sans JP', sans-serif;
      font-weight: 300;
      min-height: 100vh;
    }

    /* ── NAV ── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 48px; /* 上下パディングを少し詰めました */
      background: rgba(245,244,240,0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--rule);
      height: 70px; /* 高さを固定すると安定します */
    }

    .nav-logo {
      display: flex;
      align-items: center;
      height: 100%; /* 親要素(nav)の高さに合わせる */
    }

    /* ロゴ画像自体の制御 */
    .logo-img {
      height: 32px; /* PCでのロゴの高さ */
      width: auto;  /* アスペクト比を維持 */
      object-fit: contain;
      display: block;
    }

    .nav-cta {
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--bg);
      background: var(--ink);
      padding: 10px 24px;
      border-radius: 999px;
      text-decoration: none;
      transition: opacity 0.2s;
      white-space: nowrap; /* 改行を防ぐ */
    }

/* ── RESPONSIVE ── */
@media (max-width: 720px) {
  nav {
    padding: 0 20px;
    height: 60px; /* スマホのナビ高さ */
  }

  /* 修正ポイント：ナビに隠れないよう余白を追加 */
  .features {
    padding-top: 80px; /* ナビの高さ(60px) + 少しの余裕(20px) */
  }

  /* ラベル自体のマージンも調整して見やすく */
  .section-label {
    margin-bottom: 40px;
    font-size: 0.7rem;
  }
}
    /* ── HERO ── */
    .hero {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 120px 24px 80px;
      position: relative;
    }

    .hero-eyebrow {
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--mid);
      margin-bottom: 24px;
      opacity: 0;
      animation: fadeUp 0.8s ease 0.2s forwards;
    }

    .hero-title {
      font-family: 'DM Serif Display', serif;
      font-size: clamp(2.8rem, 8vw, 7rem);
      line-height: 1.05;
      letter-spacing: -0.01em;
      color: var(--ink);
      margin-bottom: 32px;
      opacity: 0;
      animation: fadeUp 0.9s ease 0.4s forwards;
    }

    .hero-title em {
      font-style: italic;
      color: var(--mid);
    }

    .hero-sub {
      font-size: clamp(0.95rem, 2vw, 1.15rem);
      color: var(--mid);
      max-width: 420px;
      line-height: 1.9;
      margin-bottom: 48px;
      opacity: 0;
      animation: fadeUp 0.9s ease 0.6s forwards;
    }

    .hero-btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--bg);
      background: var(--ink);
      padding: 16px 40px;
      border-radius: 999px;
      text-decoration: none;
      opacity: 0;
      animation: fadeUp 0.9s ease 0.8s forwards;
      transition: transform 0.25s ease, opacity 0.25s ease;
    }

    .hero-btn:hover { transform: translateY(-2px); opacity: 0.8; }

    .hero-btn svg { transition: transform 0.25s ease; }
    .hero-btn:hover svg { transform: translateX(4px); }

    .hero-scroll {
      position: absolute;
      bottom: 36px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      opacity: 0;
      animation: fadeUp 1s ease 1.2s forwards;
    }

    .hero-scroll span {
      font-size: 0.7rem;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--mid);
    }

    .scroll-line {
      width: 1px;
      height: 40px;
      background: var(--rule);
      position: relative;
      overflow: hidden;
    }

    .scroll-line::after {
      content: '';
      position: absolute;
      top: -40px;
      left: 0;
      width: 1px;
      height: 40px;
      background: var(--ink);
      animation: scrollDrop 1.5s ease infinite;
    }

    /* ── FEATURES ── */
    .features {
      padding: 100px 24px 120px;
      max-width: 1100px;
      margin: 0 auto;
    }

    .section-label {
      font-size: 1.5rem;
      font-weight: 700;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--mid);
      margin-bottom: 64px;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .section-label::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--rule);
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
    }

    .card {
      text-decoration: none !important;
      background: var(--card);
      padding: 48px 40px 52px;
      border-radius: 0;
      position: relative;
      overflow: hidden;
      transition: background 0.3s ease;
      cursor: default;
      touch-action: manipulation;
    }

    .card:first-child { border-radius: 24px 0 0 24px; }
    .card:last-child  { border-radius: 0 24px 24px 0; }

    .card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: var(--ink);
      transform: translateY(100%);
      transition: transform 0.45s cubic-bezier(0.4,0,0.2,1);
    }

    .card:hover { background: var(--card); }
    .card:hover::before { transform: translateY(0); }

    .card-inner {
      position: relative;
      z-index: 1;
    }

    .card-number {
      font-family: 'Noto Sans JP', serif;
      font-size: 0.85rem;
      color: var(--mid);
      margin-bottom: 40px;
      transition: color 0.3s;
    }

    .card:hover .card-number { color: rgba(255,255,255,0.4); }

    .card-title {
        font-family: 'Noto Sans JP', sans-serif;
        /* 最小値を少し下げて、推奨値を大きくすることで、広い画面でダイナミックに */
        font-size: clamp(1.1rem, 2.5vw, 1.8rem); 
        font-weight: 700;
        line-height: 1.4;
        color: var(--ink);
        margin-bottom: 16px;
        text-align: center;
        transition: color 0.3s;
        
        /* かっちょよくするためのポイント */
        letter-spacing: 0.05em;      /* 文字の間隔をわずかに広げて高級感を出す */
        word-break: keep-all;        /* 単語の途中での改行を防ぐ */
        overflow-wrap: break-word;   /* 長すぎる単語だけを改行の対象にする */
    }

    .card-title-sub {
        font-family: 'Noto Sans JP', sans-serif;
        /* 最小値を少し下げて、推奨値を大きくすることで、広い画面でダイナミックに */
        font-size: clamp(0.7rem, 2vw, 1.5rem); 
        font-weight: 500;
        line-height: 1.4;
        color: var(--ink);
        margin-bottom: 16px;
        text-align: center;
        transition: color 0.3s;
        
        /* かっちょよくするためのポイント */
        letter-spacing: 0.05em;      /* 文字の間隔をわずかに広げて高級感を出す */
        word-break: keep-all;        /* 単語の途中での改行を防ぐ */
        overflow-wrap: break-word;   /* 長すぎる単語だけを改行の対象にする */
    }

    .card:hover .card-title,.card:hover .card-title-sub { color: #fff; }

    .card-body {
      font-size: 0.9rem;
      line-height: 1.8;
      color: var(--mid);
      transition: color 0.3s;
    }

    .card:hover .card-body { color: rgba(255,255,255,0.65); }

    /* ── STATEMENT ── */
    .statement {
      border-top: 1px solid var(--rule);
      border-bottom: 1px solid var(--rule);
      padding: 100px 24px;
      text-align: center;
    }

    .statement-text {
      font-family: 'DM Serif Display', serif;
      font-size: clamp(1.8rem, 4.5vw, 3.8rem);
      line-height: 1.4;
      max-width: 760px;
      margin: 0 auto;
      color: var(--ink);
    }

    .statement-text em {
      font-style: italic;
      color: var(--mid);
    }

    /* ── FOOTER ── */
    footer {
      padding: 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-logo {
      font-family: 'DM Serif Display', serif;
      font-size: 1.1rem;
      color: var(--ink);
    }

    .footer-copy {
      font-size: 0.78rem;
      color: var(--mid);
      letter-spacing: 0.05em;
    }

    /* ── ANIMATIONS ── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    @keyframes scrollDrop {
      0%   { top: -40px; }
      100% { top: 100%; }
    }

    /* ── VIDEO MODAL ── */
    #video-modal {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.88);
      z-index: 200;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }

    #video-modal.open { display: flex; }

    #modal-video {
      width: 90%;
      max-width: 960px;
      max-height: 80vh;
      border-radius: 12px;
      cursor: default;
      outline: none;
    }

    #modal-close {
      position: absolute;
      top: 24px;
      right: 32px;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: rgba(255,255,255,0.12);
      border: none;
      color: #fff;
      font-size: 1.2rem;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
    }

    #modal-close:hover { background: rgba(255,255,255,0.25); }

    /* ── RESPONSIVE ── */
    @media (max-width: 720px) {
      nav { padding: 18px 24px; }

      .cards {
        grid-template-columns: 1fr;
        gap: 2px;
      }

      .card:first-child { border-radius: 24px 24px 0 0; }
      .card:last-child  { border-radius: 0 0 24px 24px; }
      .card:not(:first-child):not(:last-child) { border-radius: 0; }

      footer { padding: 32px 24px; }
    }

    /* 既存のスタイルに以下を上書き、または追加してください */
body, html {
  margin: 0;
  padding: 0;
  font-family: 'Noto Sans JP', sans-serif;
}

/* モーダル外枠：画面全体を黒透過で覆う */
#video-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: 9999;
  justify-content: center;
  align-items: center;
}

/* 診断アプリを入れるフレーム：全画面表示 */
#diag-frame {
  width: 100%;
  height: 100%;
}

/* 閉じるボタン：右上に配置 */
#modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  z-index: 10000;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background 0.3s;
}

#modal-close:hover {
  background: rgba(255, 255, 255, 0.4);
}

/* カードのホバー演出（スマホでも触った感が出るように） */
.card:active {
  transform: scale(0.98);
  filter: brightness(0.8);
}