:root {
    /* === Soft warm palette === */
    --bg-base: #fdfaf2;          /* warm ivory(基本背景) */
    --bg-elev: #f6efe0;          /* cream(セクション交互背景) */
    --bg-soft: #f0e6cf;          /* softer band(強調帯) */
    --bg-card: #ffffff;          /* card 白 */
    --bg-card-hover: #fffbf0;
    --border: #ead9b6;           /* warm tan border */
    --border-bright: #d8c089;
    --shadow-card: 0 6px 24px rgba(90, 60, 20, 0.08);
    --shadow-card-hover: 0 12px 36px rgba(90, 60, 20, 0.14);

    /* テキスト(コントラスト強化版・アイボリー背景で AAA レベル) */
    --text: #1f1813;             /* warm darkest brown(最濃) */
    --text-mid: #3f3528;         /* AAA 9.5:1 */
    --text-dim: #5d5040;         /* AA+ 6.0:1(以前は薄すぎ) */
    --text-on-orange: #fff;

    /* ブランドカラー = SOUND BOX オレンジ */
    --orange: #ff6b1a;
    --orange-bright: #ff8c4d;
    --orange-deep: #cc4e00;
    --orange-glow: rgba(255, 107, 26, 0.18);
    --orange-soft: rgba(255, 107, 26, 0.08);

    /* 痛み・注意色(柔らかめ赤茶) */
    --pain: #c75a5a;
    --pain-soft: rgba(199, 90, 90, 0.10);

    /* ハイライト */
    --gold: #b88a32;
    --line-green: #06c755;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; max-width: 100%; }
  html { scroll-behavior: smooth; overflow-x: hidden; width: 100%; }
  body {
    background: var(--bg-base);
    color: var(--text);
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Helvetica Neue", Arial, sans-serif;
    font-feature-settings: "palt";
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    word-break: auto-phrase;
    line-break: strict;
    text-wrap: pretty;
    hanging-punctuation: allow-end;
  }
  p, dd, li, .answer, .pain-item span, .reason-card p,
  .why-card .body p, .promise-card p, .case-meta dd,
  .insight-stat, .about-callout p,
  .ceo-body p, .lead, .sec-lead,
  summary {
    word-break: auto-phrase;
    line-break: strict;
    text-wrap: pretty;
  }
  img { max-width: 100%; display: block; }
  a { color: var(--orange-deep); text-decoration: none; }
  a:hover { color: var(--orange); }
  button { font-family: inherit; cursor: pointer; }

  .container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

  /* ===== STICKY HEADER ===== */
  header.site-head {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(253, 250, 242, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
  }
  .site-head .inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.2;
  }
  .brand .logo-mark {
    width: 42px; height: 42px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .brand .logo-mark img { width: 100%; height: 100%; object-fit: contain; }
  .brand .b-sub { color: var(--text-dim); font-size: 0.65rem; font-weight: 600; letter-spacing: 0.2em; display: block; }

  .head-cta { display: flex; align-items: center; gap: 8px; }
  .btn-line-mini {
    background: var(--line-green);
    color: #fff !important;
    padding: 8px 14px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(6, 199, 85, 0.25);
    transition: transform 0.15s ease;
  }
  .btn-line-mini:hover { transform: translateY(-1px); color: #fff !important; }
  @media (max-width: 480px) {
    .brand .b-sub { display: none; }
    .brand { font-size: 0.85rem; }
  }

  /* ===== MOBILE TYPOGRAPHY ===== */
  @media (max-width: 560px) {
    .hero h1, .hero .lead, section.block h2, section.block .sec-lead,
    .reason-card h3, .reason-card p, .why-card .body h3, .why-card .body p,
    .promise-card h3, .promise-card p, .case-card h3, .case-card .case-meta dd,
    .about-callout h3, .about-callout p, .insight-stat, .pain-item,
    .faq-item summary, .faq-item .answer, .ceo-message p, .ceo-message p strong {
      overflow-wrap: break-word;
      word-break: normal;
      line-break: auto;
      text-wrap: pretty;
    }
    .hero { padding: 60px 14px 50px; }
    .hero h1 {
      font-size: 1.55rem;
      line-height: 1.55;
      margin-bottom: 18px;
      word-break: keep-all;
      overflow-wrap: anywhere;
    }
    .hero .lead { font-size: 0.92rem; line-height: 1.85; padding: 0 4px; }
    .eyebrow { font-size: 0.62rem; letter-spacing: 0.16em; padding: 6px 12px; margin-bottom: 20px; }
    .badges { gap: 8px; font-size: 0.72rem; margin-bottom: 28px; }
    .badge { padding: 5px 12px; }
    .cta-row { gap: 12px; }
    .btn-line { min-width: 240px; padding: 16px 28px; font-size: 0.98rem; }
    .btn-phone { min-width: 200px; padding: 14px 24px; font-size: 0.95rem; }

    section.block { padding: 56px 18px; }
    section.block h2 { font-size: 1.4rem; line-height: 1.55; }
    section.block .sec-lead { font-size: 0.88rem; line-height: 1.85; margin-bottom: 32px; padding: 0 4px; }
    section.block .sec-eyebrow { font-size: 0.68rem; letter-spacing: 0.22em; margin-bottom: 14px; }

    .pain-item { padding: 14px 14px; font-size: 0.85rem; gap: 10px; word-break: keep-all; overflow-wrap: anywhere; }
    .pain-item .check { width: 22px; height: 22px; font-size: 0.78rem; }
    .reason-card { padding: 26px 20px; }
    .reason-card h3 { font-size: 1.08rem; line-height: 1.55; margin-bottom: 12px; }
    .reason-card p { font-size: 0.86rem; line-height: 1.75; }
    .reason-card .icon { font-size: 2rem; margin-bottom: 14px; }
    .insight-stat { font-size: 0.9rem; padding: 20px 20px; line-height: 1.85; margin-bottom: 28px; }
    .about-callout { padding: 30px 22px; }
    .about-callout h3 { font-size: 1.15rem; line-height: 1.55; margin-bottom: 16px; }
    .about-callout p { font-size: 0.86rem; line-height: 1.85; }
    .why-card { padding: 22px 20px; gap: 14px; }
    .why-card .iconwrap { width: 42px; height: 42px; font-size: 1.2rem; }
    .why-card .body h3 { font-size: 0.98rem; line-height: 1.55; }
    .why-card .body p { font-size: 0.84rem; line-height: 1.75; }
    .promise-card { padding: 24px 18px; }
    .promise-card h3 { font-size: 1rem; line-height: 1.55; }
    .promise-card p { font-size: 0.85rem; line-height: 1.75; }
    .promise-card .check-big { width: 48px; height: 48px; font-size: 1.2rem; margin-bottom: 14px; }
    .case-card .case-body { padding: 22px 20px; }
    .case-card h3 { font-size: 1.08rem; line-height: 1.55; margin-bottom: 10px; }
    .case-card .case-meta { font-size: 0.84rem; line-height: 1.85; }
    .case-card .tag { font-size: 0.62rem; letter-spacing: 0.12em; }
    .final-cta h2 { font-size: 1.35rem; line-height: 1.55; }
    .final-cta .lead { font-size: 0.9rem; line-height: 1.85; margin-bottom: 28px; }
    .final-cta .note { font-size: 0.78rem; line-height: 1.75; }
    .showcase-grid { gap: 10px; }
    .showcase-item .caption { font-size: 0.72rem; padding: 10px 12px; }
  }

  /* ===== HERO ===== */
  .hero {
    position: relative;
    padding: 80px 20px 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background:
      linear-gradient(180deg, rgba(253,250,242,0.55) 0%, rgba(253,250,242,0.72) 60%, rgba(253,250,242,0.95) 100%),
      url('images/sb-interior-led.jpg') center 30%/cover no-repeat;
  }
  .hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(255,107,26,0.06) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,107,26,0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 80%);
    pointer-events: none;
    z-index: 1;
  }
  .hero-inner { position: relative; max-width: 880px; z-index: 2; }
  .eyebrow {
    display: inline-block;
    padding: 7px 16px;
    border: 1px solid var(--orange);
    border-radius: 999px;
    color: var(--orange-deep);
    font-size: 0.76rem;
    letter-spacing: 0.22em;
    font-weight: 700;
    margin-bottom: 26px;
    background: var(--orange-soft);
  }
  .hero h1 {
    font-size: clamp(1.9rem, 5.5vw, 3.4rem);
    font-weight: 900;
    line-height: 1.28;
    letter-spacing: 0.01em;
    margin-bottom: 22px;
    color: var(--text);
  }
  .hero h1 .accent {
    color: var(--orange-deep);
    background: linear-gradient(180deg, var(--orange-deep) 0%, var(--orange) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .hero h1 small {
    display: block;
    font-size: 0.42em;
    font-weight: 700;
    color: var(--text-mid);
    margin-top: 14px;
    letter-spacing: 0.05em;
  }
  .hero .lead {
    font-size: clamp(0.95rem, 1.8vw, 1.1rem);
    color: var(--text-mid);
    max-width: 640px;
    margin: 0 auto 34px;
  }
  .lead-line { display: block; line-height: 1.85; margin-bottom: 0.35em; text-wrap: balance; }
  .lead-line:last-child { margin-bottom: 0; }

  .badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 14px;
    margin-bottom: 38px;
    font-size: 0.85rem;
    color: var(--text);
    font-weight: 700;
  }
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1.5px solid var(--border-bright);
    border-radius: 999px;
    box-shadow: 0 4px 14px rgba(90, 60, 20, 0.12);
    color: var(--text);
  }
  .badge strong { color: var(--orange-deep); font-weight: 800; }
  .badge .b-star { color: var(--gold); font-size: 1rem; }

  .cta-row {
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: center;
    justify-content: center;
  }
  @media (min-width: 560px) {
    .cta-row { flex-direction: row; }
  }
  .btn-line {
    background: linear-gradient(135deg, var(--line-green) 0%, #04a548 100%);
    color: #fff !important;
    padding: 17px 34px;
    border-radius: 999px;
    font-weight: 800;
    font-size: 1.04rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 26px rgba(6, 199, 85, 0.32);
    min-width: 260px;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: none;
  }
  .btn-line:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(6, 199, 85, 0.42);
    color: #fff !important;
  }
  .btn-phone {
    color: var(--orange-deep) !important;
    background: var(--bg-card);
    border: 1.5px solid var(--orange);
    padding: 15px 30px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-width: 240px;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-card);
  }
  .btn-phone:hover { background: var(--orange-soft); color: var(--orange-deep) !important; }

  /* ===== SB Studio 体験CTA ===== */
  .studio-cta {
    margin: 44px auto 0;
    max-width: 720px;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid rgba(255, 107, 26, 0.25);
    border-radius: 20px;
    padding: 38px 24px;
    box-shadow: var(--shadow-card);
  }
  .studio-cta .studio-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--orange-deep);
    background: var(--orange-soft);
    padding: 5px 15px;
    border-radius: 999px;
    margin-bottom: 16px;
  }
  .studio-cta h3 {
    font-size: 1.32rem;
    line-height: 1.55;
    margin: 0 0 14px;
    color: var(--text);
  }
  .studio-cta p {
    color: var(--text-mid);
    line-height: 1.85;
    margin: 0 0 26px;
    font-size: 0.98rem;
  }
  .studio-cta .studio-note {
    margin: 18px 0 0;
    font-size: 0.85rem;
    color: var(--text-dim);
    line-height: 1.7;
  }
  .btn-studio {
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
    color: #fff !important;
    padding: 17px 36px;
    border-radius: 999px;
    font-weight: 800;
    font-size: 1.04rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 26px rgba(255, 107, 26, 0.32);
    min-width: 264px;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: none;
    text-decoration: none;
  }
  .btn-studio:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(255, 107, 26, 0.42);
    color: #fff !important;
  }
  .btn-studio { cursor: pointer; }

  /* ===== SB Studio 埋め込み枠 ===== */
  .studio-embed {
    margin-top: 24px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 14px 40px rgba(43, 35, 27, 0.18);
    border: 1px solid rgba(255, 107, 26, 0.3);
    background: #fff;
  }
  .studio-embed-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 11px 16px;
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
    color: #fff;
    font-size: 0.84rem;
    font-weight: 700;
    text-align: left;
  }
  .studio-embed-bar a {
    color: #fff !important;
    text-decoration: underline;
    white-space: nowrap;
    font-weight: 700;
  }
  .studio-embed iframe {
    display: block;
    width: 100%;
    height: 760px;
    border: 0;
    background: #fff;
  }
  @media (max-width: 640px) {
    .studio-embed iframe { height: 600px; }
    .studio-embed-bar { font-size: 0.76rem; }
  }

  /* ===== SECTION BASE ===== */
  section.block {
    padding: 80px 20px;
    position: relative;
    background: var(--bg-base);
  }
  section.block.elev { background: var(--bg-elev); }
  section.block.soft { background: var(--bg-soft); }

  section.block.bg-pain {
    background: linear-gradient(180deg, #f9efe6 0%, #f4e3d0 100%);
  }
  section.block .container { position: relative; z-index: 2; }

  section.block .sec-eyebrow {
    text-align: center;
    color: var(--orange-deep);
    font-size: 0.74rem;
    letter-spacing: 0.3em;
    font-weight: 800;
    margin-bottom: 14px;
    text-transform: uppercase;
  }
  section.block h2 {
    text-align: center;
    font-size: clamp(1.5rem, 3.6vw, 2.2rem);
    font-weight: 800;
    line-height: 1.45;
    margin-bottom: 14px;
    letter-spacing: 0.01em;
    color: var(--text);
  }
  section.block h2 .hl { color: var(--orange-deep); }
  section.block .sec-lead {
    text-align: center;
    color: var(--text-mid);
    max-width: 680px;
    margin: 0 auto 50px;
    font-size: 0.98rem;
    line-height: 1.85;
  }
  .br-sp { display: none; }
  @media (max-width: 560px) { .br-sp { display: inline; } }

  /* ===== 商品名・固有名詞は改行禁止(センス維持の基本ルール)===== */
  .brand-name {
    white-space: nowrap;
  }

  /* ===== PAIN SECTION ===== */
  .pain-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    max-width: 800px;
    margin: 0 auto;
  }
  @media (min-width: 720px) {
    .pain-grid { grid-template-columns: 1fr 1fr; }
  }
  .pain-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 22px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 4px solid var(--pain);
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--text);
    box-shadow: var(--shadow-card);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  .pain-item:hover { transform: translateX(2px); box-shadow: var(--shadow-card-hover); }
  .pain-item .check {
    flex-shrink: 0;
    width: 26px; height: 26px;
    border-radius: 6px;
    background: var(--pain);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 900; font-size: 0.9rem;
  }

  /* ===== INSIGHT ===== */
  .insight-stat {
    max-width: 780px;
    margin: 0 auto 36px;
    padding: 26px 30px;
    background: var(--bg-card);
    border-left: 4px solid var(--orange);
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.9;
    color: var(--text);
    box-shadow: var(--shadow-card);
    text-align: left;
  }
  .insight-stat strong { color: var(--orange-deep); }

  /* INSIGHT 2列レイアウト(動画+解説) */
  .insight-split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    max-width: 1080px;
    margin: 0 auto;
    align-items: center;
  }
  @media (min-width: 860px) {
    .insight-split { grid-template-columns: 1fr 1fr; gap: 40px; }
  }
  .insight-video {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: 14px;
    overflow: hidden;
    background: #000;
    box-shadow: var(--shadow-card-hover);
    cursor: pointer;
  }
  .insight-video img.yt-thumb { width: 100%; height: 100%; object-fit: cover; }
  .insight-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
  .insight-video .yt-play-btn {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 64px; height: 64px;
    background: rgba(255, 107, 26, 0.92);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s ease, transform 0.2s ease;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    pointer-events: none;
  }
  .insight-video:hover .yt-play-btn { background: var(--orange-deep); transform: translate(-50%, -50%) scale(1.08); }
  .insight-video .yt-play-btn::before {
    content: ""; width: 0; height: 0;
    border-left: 16px solid #fff;
    border-top: 11px solid transparent;
    border-bottom: 11px solid transparent;
    margin-left: 5px;
  }
  .insight-video .video-label {
    position: absolute;
    bottom: 14px; left: 14px;
    background: rgba(0,0,0,0.78);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 6px;
    backdrop-filter: blur(4px);
  }
  .insight-text h3 {
    font-size: clamp(1.2rem, 2.4vw, 1.55rem);
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.55;
    color: var(--text);
  }
  .insight-text h3 .hl { color: var(--orange-deep); }
  .insight-text p {
    color: var(--text-mid);
    font-size: 0.95rem;
    line-height: 1.95;
    margin-bottom: 14px;
  }
  .insight-text p strong { color: var(--text); }
  .insight-points {
    margin-top: 18px;
    padding-left: 0;
    list-style: none;
  }
  .insight-points li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 0.92rem;
    line-height: 1.7;
  }
  .insight-points li::before {
    content: "✓";
    position: absolute;
    left: 0; top: 0;
    color: var(--orange);
    font-weight: 900;
  }

  /* ===== 6 REASONS ===== */
  .reasons-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 22px;
    max-width: 1080px;
    margin: 0 auto;
  }
  @media (min-width: 600px) {
    .reasons-grid { grid-template-columns: 1fr 1fr; }
  }
  @media (min-width: 900px) {
    .reasons-grid { grid-template-columns: repeat(3, 1fr); }
  }
  .reason-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px 26px;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-card);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .reason-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
  }
  .reason-card .num {
    display: inline-block;
    font-family: "Inter", system-ui, sans-serif;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.25em;
    color: var(--orange-deep);
    margin-bottom: 14px;
  }
  .reason-card .icon {
    font-size: 2.4rem;
    margin-bottom: 14px;
    line-height: 1;
  }
  .reason-card h3 {
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.5;
    color: var(--text);
  }
  .reason-card p {
    color: var(--text-mid);
    font-size: 0.92rem;
    line-height: 1.8;
  }

  /* ===== DESIGN(+α①)===== */
  .design-band {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto 36px;
  }
  @media (min-width: 720px) {
    .design-band { grid-template-columns: repeat(3, 1fr); }
  }
  .design-stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-card);
  }
  .design-stat .num {
    font-family: "Inter", system-ui, sans-serif;
    font-size: 2.6rem;
    font-weight: 900;
    color: var(--orange-deep);
    line-height: 1;
    margin-bottom: 6px;
    letter-spacing: -0.02em;
  }
  .design-stat .unit {
    font-size: 0.95rem;
    color: var(--text-mid);
    font-weight: 700;
  }
  .design-stat .label {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 6px;
  }
  .design-total {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
    color: #fff;
    padding: 22px 28px;
    border-radius: 14px;
    font-size: 1.05rem;
    font-weight: 700;
    box-shadow: 0 12px 28px var(--orange-glow);
  }
  .design-total .big {
    font-size: 1.5rem;
    font-weight: 900;
    margin: 0 4px;
  }

  /* ===== ROI CALCULATOR(+α②)===== */
  .roi-card {
    max-width: 720px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 34px 30px;
    box-shadow: var(--shadow-card-hover);
  }
  .roi-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 22px;
  }
  @media (min-width: 600px) {
    .roi-row { grid-template-columns: 1fr 1fr; gap: 22px; }
  }
  .roi-field label {
    display: block;
    font-size: 0.86rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
    line-height: 1.5;
  }
  .roi-field input,
  .roi-field select {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    background: var(--bg-base);
    color: var(--text);
    font-size: 1rem;
    font-weight: 700;
    font-family: inherit;
    transition: border-color 0.15s ease;
  }
  .roi-field input:focus,
  .roi-field select:focus {
    outline: none;
    border-color: var(--orange);
  }
  .roi-twin {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-bottom: 8px;
  }
  @media (min-width: 600px) {
    .roi-twin { grid-template-columns: 1fr 1fr; gap: 18px; }
  }
  .roi-result {
    background: linear-gradient(135deg, #fff7eb 0%, #ffe9d4 100%);
    border: 1px solid var(--border-bright);
    border-radius: 12px;
    padding: 22px 24px;
    text-align: center;
  }
  .roi-result .label {
    font-size: 0.88rem;
    color: var(--text);
    font-weight: 800;
    letter-spacing: 0.02em;
    margin-bottom: 10px;
  }
  .roi-result .amount {
    font-size: clamp(1.8rem, 4.5vw, 2.6rem);
    font-weight: 900;
    color: var(--orange-deep);
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-family: "Inter", system-ui, sans-serif;
  }
  .roi-result .amount .yen { font-size: 0.6em; margin-right: 2px; }
  .roi-result .amount .unit-suffix { font-size: 0.45em; margin-left: 4px; font-weight: 700; color: var(--text-mid); }
  .roi-result .sub {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-mid);
    line-height: 1.7;
  }
  .roi-result .sub strong { color: var(--orange-deep); }
  .roi-note {
    margin-top: 18px;
    font-size: 0.8rem;
    color: var(--text-dim);
    text-align: center;
    line-height: 1.7;
  }

  /* ===== 比較表 ===== */
  .compare-wrap {
    max-width: 980px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }
  .compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
  }
  .compare-table th,
  .compare-table td {
    padding: 16px 14px;
    text-align: center;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
  }
  .compare-table thead th {
    background: var(--bg-elev);
    font-weight: 800;
    color: var(--text);
    font-size: 0.92rem;
    letter-spacing: 0.04em;
  }
  .compare-table thead th.col-hero {
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
    color: #fff;
    position: relative;
  }
  .compare-table thead th.col-hero::after {
    content: "おすすめ";
    position: absolute;
    top: 4px; right: 50%;
    transform: translateX(50%);
    background: var(--gold);
    color: #fff;
    font-size: 0.62rem;
    padding: 2px 10px;
    border-radius: 999px;
    font-weight: 800;
    letter-spacing: 0.08em;
    display: none;
  }
  .compare-table tbody th {
    background: var(--bg-elev);
    color: var(--text-mid);
    font-size: 0.86rem;
    font-weight: 700;
    text-align: left;
    padding-left: 18px;
    letter-spacing: 0.04em;
  }
  .compare-table td.hero-col {
    background: var(--orange-soft);
    font-weight: 700;
    color: var(--text);
  }
  .compare-table .mark-yes { color: var(--orange-deep); font-weight: 900; font-size: 1.15rem; }
  .compare-table .mark-mid { color: var(--gold); font-weight: 700; }
  .compare-table .mark-no { color: var(--text-dim); font-weight: 700; }
  .compare-table tbody tr:last-child td,
  .compare-table tbody tr:last-child th { border-bottom: none; }
  @media (max-width: 640px) {
    .compare-table { font-size: 0.78rem; }
    .compare-table th, .compare-table td { padding: 10px 6px; }
    .compare-table tbody th { padding-left: 10px; font-size: 0.76rem; }
  }

  /* ===== SHOWCASE GALLERY ===== */
  .showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    max-width: 1080px;
    margin: 0 auto;
  }
  @media (min-width: 720px) {
    .showcase-grid { grid-template-columns: repeat(4, 1fr); gap: 14px; }
  }
  .showcase-item {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-card);
  }
  .showcase-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
  }
  .showcase-item img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }
  .showcase-item:hover img { transform: scale(1.05); }
  .showcase-item .caption {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    padding: 14px 16px;
    background: linear-gradient(180deg, transparent, rgba(43, 35, 27, 0.88));
    color: #fff;
    font-size: 0.82rem;
    font-weight: 700;
  }

  /* ===== WHY US ===== */
  .why-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    max-width: 920px;
    margin: 0 auto;
  }
  @media (min-width: 720px) {
    .why-grid { grid-template-columns: 1fr 1fr; }
  }
  .why-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 26px 24px;
    display: flex;
    gap: 18px;
    align-items: flex-start;
    box-shadow: var(--shadow-card);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  .why-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
  .why-card .iconwrap {
    flex-shrink: 0;
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--orange-soft);
    color: var(--orange-deep);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
  }
  .why-card .body h3 {
    font-size: 1.05rem;
    font-weight: 800;
    margin-bottom: 6px;
    color: var(--text);
  }
  .why-card .body p {
    color: var(--text-mid);
    font-size: 0.92rem;
    line-height: 1.78;
  }

  /* ===== PROMISES ===== */
  .promises-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 920px;
    margin: 0 auto;
  }
  @media (min-width: 720px) {
    .promises-grid { grid-template-columns: repeat(3, 1fr); }
  }
  .promise-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px 22px;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-card);
  }
  .promise-card .check-big {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 900; font-size: 1.4rem;
    margin: 0 auto 16px;
    box-shadow: 0 8px 18px var(--orange-glow);
  }
  .promise-card h3 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text);
  }
  .promise-card p {
    color: var(--text-mid);
    font-size: 0.9rem;
    line-height: 1.78;
  }

  /* ===== CEO MESSAGE ===== */
  .ceo-message {
    max-width: 880px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 40px 36px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: center;
    box-shadow: var(--shadow-card);
  }
  @media (min-width: 720px) {
    .ceo-message { grid-template-columns: 200px 1fr; gap: 36px; padding: 44px 40px; }
  }
  .ceo-photo {
    width: 160px; height: 160px;
    margin: 0 auto;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--orange);
    box-shadow: 0 8px 24px var(--orange-glow);
  }
  @media (min-width: 720px) {
    .ceo-photo { width: 180px; height: 180px; }
  }
  .ceo-photo img { width: 100%; height: 100%; object-fit: cover; }
  .ceo-body .role {
    font-size: 0.78rem;
    letter-spacing: 0.22em;
    color: var(--orange-deep);
    font-weight: 700;
    margin-bottom: 8px;
  }
  .ceo-body .name {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 18px;
    color: var(--text);
  }
  .ceo-body p {
    color: var(--text-mid);
    font-size: 0.95rem;
    line-height: 1.95;
    margin-bottom: 10px;
  }
  .ceo-body p strong { color: var(--text); }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 4px 0;
    box-shadow: var(--shadow-card);
  }
  .faq-item summary {
    padding: 18px 22px;
    font-weight: 700;
    color: var(--text);
    cursor: pointer;
    list-style: none;
    position: relative;
    font-size: 0.98rem;
    line-height: 1.55;
    padding-right: 50px;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::after {
    content: "+";
    position: absolute;
    right: 22px; top: 50%;
    transform: translateY(-50%);
    color: var(--orange-deep);
    font-weight: 900;
    font-size: 1.4rem;
    transition: transform 0.2s ease;
  }
  .faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
  .faq-item .answer {
    padding: 0 22px 20px;
    color: var(--text-mid);
    font-size: 0.92rem;
    line-height: 1.85;
  }
  .faq-item .answer strong { color: var(--text); }

  /* ===== FINAL CTA ===== */
  .final-cta {
    background: linear-gradient(135deg, #fff5e6 0%, #ffe6cc 100%);
    text-align: center;
  }
  .final-cta h2 {
    color: var(--text) !important;
  }
  .final-cta .lead {
    text-align: center;
    color: var(--text-mid);
    max-width: 640px;
    margin: 0 auto 36px;
    font-size: 1rem;
    line-height: 1.85;
  }
  .final-cta .note {
    margin-top: 24px;
    color: var(--text-dim);
    font-size: 0.82rem;
    line-height: 1.75;
  }

  /* ===== FOOTER ===== */
  footer.site-foot {
    background: #f1e5cc;
    color: var(--text-mid);
    padding: 50px 20px 36px;
    border-top: 1px solid var(--border);
  }
  footer.site-foot .inner {
    max-width: 1080px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
  }
  @media (min-width: 720px) {
    footer.site-foot .inner { grid-template-columns: 1.4fr 1fr; gap: 40px; }
  }
  .foot-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
  }
  .foot-brand img { width: 44px; height: 44px; object-fit: contain; }
  .foot-brand .name { font-weight: 800; font-size: 1.02rem; color: var(--text); line-height: 1.3; }
  .foot-brand .sub { font-size: 0.74rem; color: var(--text-dim); letter-spacing: 0.18em; }
  .foot-text { font-size: 0.86rem; line-height: 1.8; color: var(--text-mid); }
  .foot-info { font-size: 0.86rem; line-height: 1.95; }
  .foot-info dt { color: var(--text-dim); font-size: 0.72rem; letter-spacing: 0.12em; font-weight: 700; margin-top: 8px; }
  .foot-info dt:first-child { margin-top: 0; }
  .foot-info dd a { color: var(--orange-deep); }
  .foot-info dd a:hover { color: var(--orange); }
  .foot-copy {
    margin-top: 30px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
    font-size: 0.76rem;
    color: var(--text-dim);
    text-align: center;
  }