:root {
      color-scheme: light;
      --ink: #30212b;
      --muted: #75656d;
      --wine: #8f3d58;
      --rose: #bd687b;
      --rose-light: #f6e8eb;
      --rose-pale: #fff8f8;
      --line: #eadde0;
      --white: #fff;
      --surface: #fffdfc;
      --shadow: 0 22px 60px rgba(87, 37, 55, .10);
      --radius: 26px;
      --max: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--surface);
      color: var(--ink);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      line-height: 1.65;
    }
    img, svg { display: block; max-width: 100%; }
    a { color: inherit; }
    .wrap { width: min(var(--max), calc(100% - 44px)); margin-inline: auto; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: var(--wine);
      font-size: .77rem;
      font-weight: 800;
      letter-spacing: .16em;
      text-transform: uppercase;
    }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--rose); }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; }
    h1 { max-width: 720px; margin: 18px 0; font-size: clamp(2.55rem, 5.7vw, 5rem); }
    h2 { margin-bottom: 16px; font-size: clamp(2rem, 4vw, 3.25rem); }
    h3 { margin-bottom: 10px; font-size: 1.16rem; }
    .lead { color: #5e4c55; font-size: clamp(1.06rem, 1.6vw, 1.25rem); max-width: 660px; }
    .section { padding: 96px 0; }
    .section-head { max-width: 740px; margin: 0 auto 42px; text-align: center; }
    .section-head .eyebrow { justify-content: center; }
    .section-head p { margin-bottom: 0; color: var(--muted); }
    .btn-row { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
    .btn {
      display: inline-flex;
      min-height: 50px;
      align-items: center;
      justify-content: center;
      padding: 12px 21px;
      border: 1px solid var(--wine);
      border-radius: 999px;
      background: var(--wine);
      color: white;
      font-weight: 750;
      text-decoration: none;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
    }
    .btn:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(143,61,88,.2); }
    .btn.secondary { background: transparent; color: var(--wine); }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 42px 0 76px;
      background:
        radial-gradient(ellipse at 82% 35%, rgba(237, 190, 199, .32), transparent 34%),
        linear-gradient(135deg, #fffafa 0%, #fff 56%, #f8ebee 100%);
    }
    .hero::after {
      position: absolute;
      right: -110px;
      bottom: -210px;
      width: 470px;
      height: 470px;
      border: 1px solid rgba(143,61,88,.12);
      border-radius: 50%;
      content: "";
      box-shadow: 0 0 0 42px rgba(143,61,88,.025), 0 0 0 84px rgba(143,61,88,.02);
      pointer-events: none;
    }
    .hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; gap: 44px; align-items: center; }
    .hero-copy { padding: 18px 0; }
    .hero-copy .fine { max-width: 630px; color: #776770; font-size: .91rem; }
    .hero-art {
      position: relative;
      min-height: 480px;
      padding: 22px;
      border: 1px solid rgba(143,61,88,.13);
      border-radius: 34px;
      background: rgba(255,255,255,.77);
      box-shadow: var(--shadow);
    }
    .hero-art img { width: 100%; height: 436px; border-radius: 22px; object-fit: contain; background: linear-gradient(145deg,#fff,#fbf3f5); }
    .hero-stamp {
      position: absolute;
      right: 38px;
      bottom: 38px;
      display: grid;
      width: 112px;
      height: 112px;
      place-content: center;
      border: 1px solid rgba(255,255,255,.75);
      border-radius: 50%;
      background: rgba(143,61,88,.93);
      color: white;
      text-align: center;
      box-shadow: 0 14px 36px rgba(93,39,57,.24);
    }
    .hero-stamp b { font-size: 1.55rem; line-height: 1.1; }
    .hero-stamp span { font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; }
    .trust-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .trust-chip { padding: 9px 13px; border: 1px solid #ead6dc; border-radius: 999px; background: rgba(255,255,255,.72); color: #5d4650; font-size: .85rem; font-weight: 700; }
    .notice { padding: 15px 18px; border-left: 3px solid var(--rose); border-radius: 0 12px 12px 0; background: #fff7f8; color: #684e58; font-size: .92rem; }
    .intro-strip { padding: 24px 0; background: var(--wine); color: white; }
    .intro-strip .wrap { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
    .strip-item { display: flex; align-items: center; gap: 14px; }
    .strip-icon { display: grid; width: 42px; height: 42px; flex: 0 0 42px; place-items: center; border: 1px solid rgba(255,255,255,.45); border-radius: 50%; font-weight: 800; }
    .strip-item b { display: block; font-size: .95rem; }
    .strip-item span { display: block; color: #f5dfe5; font-size: .82rem; }
    .principle-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: center; }
    .principle-copy p { color: var(--muted); }
    .principle-copy .notice { margin-top: 24px; }
    .diagram-card { overflow: hidden; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff7f8; box-shadow: var(--shadow); }
    .diagram-card img { width: 100%; height: auto; border-radius: 18px; }
    .caption { margin: 14px 2px 0; color: var(--muted); font-size: .82rem; }
    .detail-section { background: var(--rose-pale); }
    .detail-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 40px; align-items: center; }
    .detail-photo { margin: 0; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
    .detail-photo img { width: 100%; height: auto; max-height: 520px; object-fit: contain; border-radius: 16px; background: #fff; }
    .feature-list { display: grid; gap: 14px; margin: 25px 0 0; padding: 0; list-style: none; }
    .feature-list li { display: grid; grid-template-columns: 32px 1fr; gap: 12px; align-items: start; }
    .check { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 50%; background: #f2dce2; color: var(--wine); font-weight: 900; }
    .feature-list b { display: block; }
    .feature-list span:last-child { color: var(--muted); font-size: .92rem; }
    .spec-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
    .spec-table { width: 100%; border-collapse: collapse; }
    .spec-table th, .spec-table td { padding: 17px 22px; border-bottom: 1px solid #f0e6e8; text-align: left; vertical-align: top; }
    .spec-table th { width: 37%; background: #fff8f9; color: #684653; font-size: .91rem; }
    .spec-table td { color: #584a50; }
    .spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
    .spec-confirm { margin-top: 18px; color: var(--muted); font-size: .88rem; }
    .compare-section { background: linear-gradient(180deg,#fff 0%,#fff7f8 100%); }
    .compare-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; max-width: 1080px; margin: 0 auto; }
    .compare-card { padding: 18px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: 0 10px 26px rgba(87,37,55,.06); }
    .compare-card h3 { margin-bottom: 15px; color: var(--wine); }
    .compare-pair { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
    .compare-pair figure { margin: 0; }
    .compare-pair img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: contain; border: 1px solid var(--line); border-radius: 13px; background: #fbf7f8; }
    .compare-pair figcaption { padding-top: 8px; color: var(--muted); font-size: .84rem; font-weight: 750; text-align: center; }
    .compare-warning { max-width: 900px; margin: 22px auto 0; }
    .faq-list { display: grid; gap: 12px; max-width: 900px; margin: 0 auto; }
    details { border: 1px solid var(--line); border-radius: 17px; background: white; box-shadow: 0 7px 22px rgba(87,37,55,.04); }
    summary { position: relative; padding: 20px 54px 20px 22px; cursor: pointer; font-weight: 800; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; top: 50%; right: 21px; color: var(--wine); content: "+"; font-size: 1.5rem; transform: translateY(-50%); }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; padding: 0 22px 21px; color: var(--muted); }
    .contact-section { padding: 76px 0; background: #382630; color: white; }
    .contact-box { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
    .contact-box h2 { max-width: 660px; margin-bottom: 10px; font-size: clamp(1.8rem,3.5vw,2.8rem); }
    .contact-box p { max-width: 640px; margin-bottom: 0; color: #e8d9de; }
    .contact-box .btn { flex: 0 0 auto; border-color: #fff; background: #fff; color: var(--wine); }
    footer { padding: 27px 0; background: #2b1e26; color: #e9dce1; font-size: .82rem; }
    footer p { margin: 0; }
    .source-note { margin-top: 12px; color: #cdb8c0; }
    @media (max-width: 900px) {
      .hero-grid, .principle-grid, .detail-grid { grid-template-columns: 1fr; }
      .hero-grid { gap: 28px; }
      .hero-art { min-height: auto; }
      .hero-art img { height: 390px; }
      .principle-grid { gap: 30px; }
      .detail-grid { gap: 28px; }
    }
    @media (max-width: 640px) {
      .wrap { width: min(100% - 30px, var(--max)); }
      .section { padding: 68px 0; }
      .hero { padding: 26px 0 56px; }
      .hero-art { padding: 12px; border-radius: 23px; }
      .hero-art img { height: 320px; }
      .hero-stamp { right: 23px; bottom: 23px; width: 91px; height: 91px; }
      .intro-strip .wrap { grid-template-columns: 1fr; gap: 17px; }
      .compare-grid { grid-template-columns: 1fr; }
      .compare-pair { grid-template-columns: repeat(2,minmax(0,1fr)); }
      .spec-table th, .spec-table td { padding: 14px 13px; font-size: .88rem; }
      .spec-table th { width: 41%; }
      .contact-box { align-items: flex-start; flex-direction: column; }
      .contact-box .btn { width: 100%; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    }