html { scroll-behavior: smooth; }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --black: #111111;
      --bg: #f6f6f6;
      --gray: #666666;
      --white: #ffffff;
      --border: #dddddd;
    }

    body {
      font-family: 'Noto Sans JP', sans-serif;
      background: var(--bg);
      color: var(--black);
      font-size: 16px;
      line-height: 2;
    }

    /* ========== HEADER ========== */
    header {
      position: fixed;
      top: 0; left: 0; right: 0;
      background: var(--white);
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 40px;
      height: 64px;
    }

    .logo {
      text-decoration: none;
      color: var(--black);
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .logo small {
      display: block;
      font-family: 'Montserrat', sans-serif;
      font-size: 14px;
      font-weight: 700;
      color: var(--black);
      text-align: center;
      line-height: 1;
    }
    .logo strong {
      display: block;
      font-family: 'Montserrat', sans-serif;
      font-size: 20px;
      font-weight: 700;
      text-align: center;
      line-height: 1;
    }

    nav {
      display: flex;
      align-items: center;
      gap: 48px;
    }
    nav a {
      text-decoration: none;
      color: var(--black);
      font-family: 'Montserrat', sans-serif;
      font-size: 18px;
      font-weight: 700;
    }
    .nav-cta {
      background: var(--black);
      color: var(--white) !important;
      padding: 0 34px;
      height: 64px;
      display: flex;
      align-items: center;
      margin-right: -40px;
      font-size: 15px !important;
      font-weight: 700 !important;
    }

    /* ========== SECTIONS ========== */
    main { padding-top: 64px; }

    section { padding: 80px max(40px, calc((100% - 960px) / 2)); }

    .section-label {
      display: block;
    }
    .section-title-block {
      display: flex;
      flex-direction: column;
      gap: 4px;
      border-left: 12px solid var(--black);
      padding-left: 24px;
      justify-content: center;
      margin-bottom: 40px;
    }
    .section-tag {
      font-family: 'Noto Sans JP', sans-serif;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.05em;
      line-height: 1.2;
      color: var(--black);
    }
    .section-en {
      font-family: 'Montserrat', sans-serif;
      font-size: 56px;
      font-weight: 800;
      line-height: 1.2;
    }
    .section-content {
      flex: 1;
    }

    /* ========== HERO ========== */
    #hero {
      min-height: calc(100vh - 64px);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 40px;
      padding: 64px max(40px, calc((100% - 960px) / 2)) 64px;
    }
    .hero-inner {
      border-left: 12px solid var(--black);
      padding-left: 24px;
      display: flex;
      flex-direction: column;
      gap: 24px;
      width: 100%;
    }
    .hero-text-block {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .hero-sub {
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0.05em;
      line-height: 1.5;
    }
    .hero-title {
      font-size: 56px;
      font-weight: 900;
      line-height: 1.35;
      letter-spacing: 0.02em;
    }
    .hero-desc {
      font-size: 18px;
      font-weight: 400;
      line-height: 1.8;
      color: var(--black);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--black);
      color: var(--white);
      padding: 16px 40px;
      text-decoration: none;
      font-family: 'Noto Sans JP', sans-serif;
      font-size: 16px;
      font-weight: 700;
      letter-spacing: 0.05em;
    }
    .hero-stats {
      display: flex;
      gap: 64px;
      width: 100%;
      justify-content: space-between;
    }
    .stat-label {
      font-size: 24px;
      font-weight: 700;
      letter-spacing: 0.05em;
      color: var(--black);
      margin-bottom: 4px;
    }
    .stat-num {
      font-family: 'Montserrat', sans-serif;
      font-size: 80px;
      font-weight: 700;
      line-height: 1;
    }
    .stat-unit {
      font-family: 'Noto Sans JP', sans-serif;
      font-size: 40px;
      font-weight: 700;
    }
    .stat-note {
      font-size: 16px;
      font-weight: 400;
      color: var(--gray);
      line-height: 1.4;
      margin-top: 4px;
    }

    /* ========== SLIDER ========== */
    #slider {
      padding: 0;
      overflow: hidden;
    }
    @keyframes scrollLeft {
      0%   { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }
    .slider-track {
      display: flex;
      gap: 0;
      width: max-content;
      animation: scrollLeft 40s linear infinite;
    }
    .slider-track:hover {
      animation-play-state: paused;
    }
    .slide {
      width: 33.333vw;
      aspect-ratio: 3/2;
      overflow: hidden;
      flex-shrink: 0;
      border-radius: 8px;
      display: block;
      margin: 0 3.333vw 0 0;
      padding: 0;
    }
    .slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: grayscale(20%);
    }
    .slide-placeholder {
      background: #ccc;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #888;
      font-size: 13px;
    }

    /* ========== SERVICE ========== */
    #service { background: var(--white); }
    .service-item {
      margin-bottom: 48px;
      padding-bottom: 48px;
      border-bottom: 1px solid var(--border);
    }
    .service-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
      padding-bottom: 0;
    }
    .service-item h3 {
      font-size: 28px;
      font-weight: 700;
      letter-spacing: 0.05em;
      margin-bottom: 12px;
    }
    .service-item p {
      font-size: 16px;
      line-height: 2;
      color: var(--gray);
      margin-bottom: 16px;
    }
    .check-list {
      list-style: none;
    }
    .check-list li {
      font-size: 16px;
      padding: 4px 0;
    }
    .check-list li::before {
      content: "✔ ";
      font-size: 12px;
    }
    .service-sub {
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0.05em;
      margin: 24px 0 4px;
    }
    .price-callout {
      margin-top: 16px;
      background: var(--white);
      border-left: 8px solid var(--black);
      padding: 14px 20px;
      font-size: 15px;
      line-height: 1.8;
    }
    .price-callout strong { font-size: 18px; }
    /* 固定ヘッダー(64px)の下に見出しが隠れないよう、#demo で飛んだときに少し下げる */
    .demo-block { margin-top: 32px; scroll-margin-top: 96px; }
    .demo-block h4 {
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0.05em;
    }
    .demo-block p { font-size: 14px; margin-bottom: 16px; }
    .demo-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .demo-card {
      display: block;
      text-decoration: none;
      color: var(--black);
      border: 1px solid var(--border);
      background: var(--white);
      transition: opacity 0.2s;
    }
    .demo-card:hover { opacity: 0.8; }
    .demo-card img { display: block; width: 100%; height: auto; border-bottom: 1px solid var(--border); }
    .demo-card span {
      display: block;
      padding: 10px 12px;
      font-size: 14px;
      font-weight: 700;
    }
    .demo-card span::after { content: " ↗"; font-weight: 400; color: var(--gray); }
    .demo-renewal {
      display: grid;
      grid-template-columns: 1fr 1fr 2fr;
      gap: 12px;
      align-items: center;
      margin-top: 16px;
      padding: 12px;
      border: 1px solid var(--border);
      background: var(--white);
      color: var(--black);
      text-decoration: none;
      transition: opacity 0.2s;
    }
    .demo-renewal:hover { opacity: 0.8; }
    .demo-renewal img { display: block; width: 100%; height: auto; border: 1px solid var(--border); }
    .demo-renewal span { font-size: 13px; color: var(--gray); line-height: 1.7; }
    .demo-renewal b { display: block; font-size: 15px; color: var(--black); }
    .demo-renewal b::after { content: " →"; font-weight: 400; }

    /* ========== WORKS ========== */
    #works { background: var(--bg); }
    .works-list {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }
    .work-card {
      background: var(--white);
      padding: 32px 40px;
      display: block;
      text-decoration: none;
      color: var(--black);
      border: 1px solid var(--border);
    }
    .works-list {
      display: flex;
      flex-direction: column;
      gap: 40px;
    }
    .work-meta {
      font-size: 18px;
      color: var(--black);
      margin-bottom: 12px;
    }
    .work-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 16px;
    }
    .tag {
      font-size: 11px;
      border: 1px solid var(--border);
      padding: 2px 10px;
      background: var(--bg);
    }
    .work-title {
      font-size: 26px;
      font-weight: 700;
      letter-spacing: 0.05em;
      line-height: 1.6;
    }
    .works-more {
      margin-top: 32px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      color: var(--black);
      font-size: 16px;
      font-weight: 700;
      border-bottom: 1px solid var(--black);
      padding-bottom: 2px;
    }

    /* ========== ABOUT ========== */
    #about { background: var(--white); }
    .about-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: start;
    }
    .about-photo {
      width: 100%;
      aspect-ratio: 3/2;
      object-fit: cover;
      filter: grayscale(100%);
      background: #ccc;
    }
    .about-photo-placeholder {
      width: 100%;
      aspect-ratio: 4/3;
      background: #ccc;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #999;
      font-size: 13px;
    }
    .about-name-en {
      font-family: 'Noto Sans JP', sans-serif;
      font-size: 2.5rem;
      font-weight: 700;
      line-height: 1.1;
      margin-top: 0;
      margin-bottom: 16px;
    }
    .about-role {
      font-size: 13px;
      color: var(--gray);
      font-style: italic;
      margin-bottom: 24px;
    }
    .about-text {
      font-size: 16px;
      line-height: 2;
      color: var(--gray);
      margin-bottom: 16px;
    }
    .about-skills h4 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      margin-top: 24px;
    }
    .skill-list {
      list-style: disc;
      padding-left: 20px;
    }
    .skill-list li {
      font-size: 16px;
      padding: 2px 0;
    }

    /* ========== PRICE ========== */
    #price { background: var(--bg); }
    .price-top {
      margin-bottom: 48px;
    }
    .price-main-num {
      font-family: 'Montserrat', sans-serif;
      font-size: 40px;
      font-weight: 700;
      line-height: 1;
      margin-bottom: 8px;
    }
    .price-unit {
      font-family: 'Noto Sans JP', sans-serif;
      font-size: 16px;
      font-weight: 700;
      color: var(--gray);
      margin-left: 6px;
    }
    .price-main-label {
      font-size: 16px;
      color: var(--gray);
      margin-bottom: 24px;
    }
    .price-checks {
      list-style: none;
      margin-bottom: 32px;
    }
    .price-checks li {
      font-size: 16px;
      padding: 4px 0;
    }
    .price-checks li::before { content: ""; }
    .price-checks li {
      padding: 4px 0 4px 32px;
      position: relative;
    }
    .price-checks li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 18px;
      height: 18px;
      background: var(--black);
      border-radius: 50%;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
      background-size: 11px;
      background-repeat: no-repeat;
      background-position: center;
    }
    .price-plans {
      border-top: 1px solid var(--border);
    }
    .price-plan {
      padding: 32px 0;
      border-bottom: 1px solid var(--border);
    }
    .price-plan-note {
      padding: 20px 0;
      border-bottom: 1px solid var(--border);
      font-size: 14px;
      color: var(--gray);
      line-height: 1.8;
    }
    .price-plan h4 {
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0;
      line-height: 2;
      margin-bottom: 8px;
    }
    .price-plan ul {
      list-style: disc;
      padding-left: 20px;
    }
    .price-plan ul li {
      font-size: 16px;
      padding: 2px 0;
    }
    .price-note {
      font-size: 16px;
      line-height: 2;
      margin-top: 32px;
    }

    /* ========== FAQ ========== */
    #faq { background: var(--white); }
    .faq-list {
      display: flex;
      flex-direction: column;
    }
    .faq-item {
      border-bottom: 1px solid var(--border);
    }
    .faq-q {
      width: 100%;
      background: none;
      border: none;
      color: var(--black);
      text-align: left;
      padding: 24px 0;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.05em;
      font-family: 'Noto Sans JP', sans-serif;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .faq-q::after {
      content: "▾";
      font-size: 18px;
      flex-shrink: 0;
      transition: transform 0.3s;
    }
    .faq-item.open .faq-q::after { transform: rotate(180deg); }
    .faq-a {
      display: none;
      font-size: 16px;
      line-height: 2;
      color: var(--gray);
      padding-bottom: 24px;
    }
    .faq-item.open .faq-a { display: block; }

    /* ========== CONTACT ========== */
    #contact { background: var(--bg); }
    .contact-desc {
      font-size: 16px;
      line-height: 2;
      margin-bottom: 40px;
    }
    .form-group {
      margin-bottom: 24px;
    }
    .form-label {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 15px;
      font-weight: 700;
      letter-spacing: 0.05em;
      margin-bottom: 12px;
    }
    .badge {
      font-size: 10px;
      background: var(--black);
      color: var(--white);
      padding: 2px 8px;
    }
    .badge-opt {
      font-size: 10px;
      border: 1px solid var(--gray);
      color: var(--gray);
      padding: 2px 8px;
    }
    .form-input {
      width: 100%;
      padding: 0 16px;
      height: 54px;
      border: 1px solid var(--gray);
      background: var(--white);
      font-size: 16px;
      font-family: 'Noto Sans JP', sans-serif;
      outline: none;
    }
    .form-input:focus { border-color: #707070; }
    textarea.form-input { height: 200px; padding: 16px; resize: vertical; }
    .radio-group { display: flex; flex-direction: column; gap: 8px; }
    .radio-group label {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 16px;
      cursor: pointer;
    }
    .form-note {
      font-size: 12px;
      color: var(--gray);
      text-align: center;
      margin-bottom: 16px;
    }
    .submit-btn {
      display: block;
      width: 100%;
      max-width: 180px;
      margin: 0 auto;
      background: var(--black);
      color: var(--white);
      border: none;
      height: 50px;
      font-size: 15px;
      font-weight: 700;
      font-family: 'Noto Sans JP', sans-serif;
      cursor: pointer;
    }
    .form-error {
      color: #c00;
      font-size: 13px;
      margin-top: 6px;
      display: none;
    }
    .form-input.has-error {
      border-color: #c00;
    }
    .submit-btn:hover { opacity: 0.85; }
    .form-thanks {
      display: none;
      padding: 40px 0;
      text-align: center;
    }
    .form-thanks p {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .form-thanks small {
      font-size: 14px;
      color: var(--gray);
    }

    /* ========== FOOTER ========== */
    footer {
      text-align: center;
      padding: 40px;
      font-size: 12px;
      color: var(--gray);
      border-top: 1px solid var(--border);
    }

    /* ========== WORKS DETAIL ========== */
    .work-head { background: var(--bg); }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--gray);
      line-height: 1.6;
      margin-bottom: 32px;
    }
    .breadcrumb a {
      color: var(--gray);
      text-decoration: none;
      border-bottom: 1px solid var(--border);
    }
    .work-detail-title {
      font-size: 36px;
      font-weight: 700;
      letter-spacing: 0.02em;
      line-height: 1.6;
      margin-bottom: 24px;
    }
    .work-detail-label {
      font-size: 13px;
      color: var(--gray);
      line-height: 1.6;
      margin-bottom: 8px;
    }
    .work-lead {
      border-left: 4px solid var(--black);
      padding-left: 20px;
      margin-top: 32px;
    }
    .work-lead-label {
      font-size: 13px;
      color: var(--gray);
      line-height: 1.6;
    }
    .work-lead-text {
      font-size: 22px;
      font-weight: 700;
      line-height: 1.8;
    }

    .work-stats-section {
      background: var(--white);
      padding-top: 56px;
      padding-bottom: 56px;
    }
    .work-stats { gap: 40px; }
    .work-stats .stat-label { font-size: 16px; }
    .work-stats .stat-num { font-size: 56px; }
    .work-stats .stat-unit { font-size: 24px; }
    .work-stats .stat-note { font-size: 14px; }
    .work-stats-sm { gap: 32px; }
    .work-stats-sm .stat-num { font-size: 34px; }
    .work-stats-2 {
      justify-content: flex-start;
      gap: 120px;
    }

    .work-overview { background: var(--bg); }
    .overview-table {
      background: var(--white);
      border: 1px solid var(--border);
      padding: 0 32px;
    }
    .overview-row {
      display: grid;
      grid-template-columns: 140px 1fr;
      gap: 24px;
      padding: 20px 0;
      border-bottom: 1px solid var(--border);
    }
    .overview-row:last-child { border-bottom: none; }
    .overview-row dt {
      font-size: 15px;
      font-weight: 700;
      line-height: 1.8;
    }
    .overview-row dd {
      font-size: 16px;
      line-height: 1.8;
    }

    .work-challenge { background: var(--white); }

    .work-approach { background: var(--bg); }
    .approach-list {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .approach-item {
      background: var(--white);
      border: 1px solid var(--border);
      padding: 32px 40px;
      display: grid;
      grid-template-columns: 72px 1fr;
      gap: 24px;
      align-items: start;
    }
    .approach-num {
      font-family: 'Montserrat', sans-serif;
      font-size: 44px;
      font-weight: 700;
      line-height: 1.4;
    }
    .approach-body h3 {
      font-size: 22px;
      font-weight: 700;
      line-height: 1.6;
      margin-bottom: 8px;
    }
    .approach-body p { font-size: 16px; }
    .approach-points {
      list-style: disc;
      padding-left: 20px;
      margin-bottom: 16px;
    }
    .approach-points li {
      font-size: 16px;
      padding: 2px 0;
    }

    .work-result { background: var(--white); }
    .result-table {
      width: 100%;
      border-collapse: collapse;
      border: 1px solid var(--border);
    }
    .result-table th,
    .result-table td {
      text-align: left;
      padding: 16px 24px;
      font-size: 16px;
      line-height: 1.8;
      border-bottom: 1px solid var(--border);
    }
    .result-table thead th {
      background: var(--bg);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.05em;
      color: var(--gray);
    }
    .result-table tbody th { font-weight: 700; }
    .result-table tbody td { font-weight: 700; }
    .result-table tbody tr:last-child th,
    .result-table tbody tr:last-child td { border-bottom: none; }
    .result-note {
      margin-top: 16px;
      font-size: 15px;
      color: var(--gray);
      line-height: 1.8;
    }
    .result-point {
      margin-top: 32px;
      background: var(--bg);
      border-left: 12px solid var(--black);
      padding: 28px 32px;
    }
    .result-point h3 {
      font-size: 20px;
      font-weight: 700;
      line-height: 1.8;
      margin-bottom: 4px;
    }
    .result-point p { font-size: 16px; }

    .work-other { background: var(--bg); }
    .other-works-title {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.05em;
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .other-works {
      border-top: 1px solid var(--border);
    }
    .other-work {
      display: block;
      padding: 20px 0;
      border-bottom: 1px solid var(--border);
      text-decoration: none;
      color: var(--black);
    }
    .other-work-meta {
      font-size: 14px;
      color: var(--gray);
      line-height: 1.6;
    }
    .other-work-title {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.8;
    }
    .other-work-arrow {
      font-size: 14px;
      font-weight: 400;
      margin-left: 8px;
    }

    .work-cta-section { background: var(--bg); }
    .work-cta {
      background: var(--white);
      border: 1px solid var(--border);
      padding: 56px 40px;
      text-align: center;
    }
    .work-cta-title {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.6;
      margin-bottom: 8px;
    }
    .work-cta-desc {
      font-size: 16px;
      color: var(--gray);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .work-cta-desc a {
      color: var(--black);
      font-weight: 700;
      text-decoration: none;
      border-bottom: 1px solid var(--black);
    }

    /* ========== ARTICLES ========== */
    .article-excerpt {
      margin-top: 12px;
      font-size: 15px;
      color: var(--gray);
      line-height: 1.8;
    }
    .article-section { background: var(--white); }
    .article-body {
      max-width: 800px;
      margin: 0 auto;
      line-height: 2;
    }
    .article-body > * + * { margin-top: 20px; }
    .article-body h2 {
      font-size: 26px;
      font-weight: 700;
      line-height: 1.6;
      border-left: 8px solid var(--black);
      padding-left: 16px;
      margin-top: 64px;
    }
    .article-body h3 {
      font-size: 20px;
      font-weight: 700;
      line-height: 1.6;
      margin-top: 40px;
    }
    .article-body > :first-child { margin-top: 0; }
    .article-body ul,
    .article-body ol { padding-left: 1.5em; }
    .article-body li + li { margin-top: 8px; }
    .article-body a {
      color: var(--black);
      font-weight: 700;
      text-decoration: none;
      border-bottom: 1px solid var(--black);
    }
    .article-body hr {
      border: none;
      border-top: 1px solid var(--border);
      margin: 40px 0;
    }
    .article-body figure { margin-top: 32px; margin-bottom: 32px; }
    .article-body img {
      display: block;
      height: auto;
      margin: 0 auto;
      border: 1px solid var(--border);
    }

    /* ========== RENEWAL EXAMPLE ========== */
    .ba-note { margin-top: 16px; font-size: 14px; color: var(--gray); line-height: 1.8; }
    .ba-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
    .ba-sp { max-width: 720px; margin: 0 auto; }
    .ba-grid figure { margin: 0; }
    .ba-grid figcaption {
      font-family: 'Montserrat', sans-serif;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .ba-grid img { display: block; width: 100%; height: auto; border: 1px solid var(--border); }
    .ba-links { display: flex; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
    .ba-table { margin-top: 16px; background: var(--white); }

    /* ========== RESPONSIVE ========== */
    html { -webkit-text-size-adjust: 100%; }
    img { max-width: 100%; }

    /* ハンバーガーボタン（デスクトップでは非表示） */
    .nav-toggle {
      display: none;
      position: relative;
      width: 44px;
      height: 44px;
      padding: 0;
      background: none;
      border: none;
      cursor: pointer;
      flex-shrink: 0;
    }
    .nav-toggle span {
      display: block;
      position: absolute;
      left: 11px;
      width: 22px;
      height: 2px;
      background: var(--black);
      transition: transform 0.25s, opacity 0.25s;
    }
    .nav-toggle span:nth-child(1) { top: 15px; }
    .nav-toggle span:nth-child(2) { top: 21px; }
    .nav-toggle span:nth-child(3) { top: 27px; }
    body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
    body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
    body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

    /* ナビ項目が増えたため、ハンバーガーに切り替わる手前の幅では間隔を詰める */
    @media (max-width: 1100px) {
      #globalNav { gap: 32px; }
    }

    /* ---------- タブレット以下 ---------- */
    @media (max-width: 900px) {
      header { height: 60px; padding: 0 20px; }
      main { padding-top: 60px; }
      .nav-toggle { display: block; }

      #globalNav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--white);
        border-top: 1px solid var(--border);
        max-height: calc(100vh - 60px);
        max-height: calc(100svh - 60px);
        overflow-y: auto;
      }
      body.nav-open #globalNav { display: flex; }
      #globalNav a {
        font-size: 16px;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border);
      }
      .nav-cta {
        height: auto;
        margin-right: 0;
        padding: 18px 20px;
        justify-content: center;
        border-bottom: none;
      }

      section { padding: 64px 32px; }
      .section-en { font-size: 40px; }
      .section-tag { font-size: 18px; }
      .section-title-block { margin-bottom: 32px; }

      #hero {
        min-height: 0;
        padding: 72px 32px 64px;
        gap: 32px;
      }
      .hero-sub { font-size: 16px; }
      .hero-title { font-size: 44px; }
      .hero-desc { font-size: 16px; }
      .hero-stats { gap: 32px; }
      .stat-label { font-size: 18px; }
      .stat-num { font-size: 56px; }
      .stat-unit { font-size: 26px; }
      .stat-note { font-size: 14px; }

      .about-inner { grid-template-columns: 1fr; gap: 32px; }
      .about-photo { order: -1; }

      .work-stats .stat-num { font-size: 44px; }
      .work-stats-2 { gap: 32px; }
      .approach-item { padding: 28px 24px; grid-template-columns: 56px 1fr; gap: 16px; }
      .approach-num { font-size: 36px; }
      .work-cta { padding: 40px 24px; }
    }

    /* ---------- スマートフォン ---------- */
    @media (max-width: 600px) {
      section { padding: 56px 20px; }
      .section-en { font-size: 34px; }
      .section-tag { font-size: 16px; }
      .section-title-block { border-left-width: 8px; padding-left: 16px; }

      #hero { padding: 56px 20px; gap: 28px; }
      .hero-inner { border-left-width: 8px; padding-left: 16px; gap: 20px; }
      .hero-sub { font-size: 13px; }
      .hero-title { font-size: min(26px, 6vw); }
      .hero-desc { font-size: 15px; line-height: 1.8; }
      .btn { width: 100%; padding: 16px 24px; }
      #hero .btn { width: auto; padding: 16px 40px; line-height: 1.5; }
      .hero-stats { flex-direction: column; gap: 28px; }
      .stat-label { font-size: 16px; }
      .stat-num { font-size: 48px; }
      .stat-unit { font-size: 22px; }

      .slide { width: 60vw; margin-right: 6vw; }

      .service-item { margin-bottom: 36px; padding-bottom: 36px; }
      .service-item h3 { font-size: 20px; line-height: 1.6; }
      .demo-list { grid-template-columns: 1fr; gap: 12px; }
      .demo-renewal { grid-template-columns: 1fr 1fr; }
      .demo-renewal span { grid-column: 1 / -1; }
      .ba-grid { gap: 12px; }
      .ba-pc { grid-template-columns: 1fr; gap: 24px; }
      .ba-grid figcaption { font-size: 16px; }

      .works-list { gap: 24px; }
      .work-card { padding: 24px 20px; }
      .work-meta { font-size: 15px; }
      .work-title { font-size: 19px; }

      .about-name-en { font-size: 28px; }
      .about-skills h4 { font-size: 17px; }

      .price-top { margin-bottom: 36px; }
      .price-main-num { font-size: 34px; }
      .price-plan { padding: 24px 0; }
      .price-plan h4 { font-size: 17px; line-height: 1.8; }

      .faq-q { font-size: 16px; padding: 20px 0; gap: 12px; }
      .faq-a { font-size: 15px; }

      .contact-desc { font-size: 15px; margin-bottom: 32px; }
      .form-input { height: 50px; }
      textarea.form-input { height: 160px; }

      footer { padding: 32px 20px; }

      /* 実績詳細ページ */
      .work-detail-title { font-size: 24px; }
      .work-lead { border-left-width: 8px; padding-left: 16px; margin-top: 24px; }
      .work-lead-text { font-size: 17px; }
      .work-stats-section { padding-top: 40px; padding-bottom: 40px; }
      .work-stats .stat-num { font-size: 40px; }
      .work-stats .stat-unit { font-size: 20px; }
      .work-stats-sm .stat-num { font-size: 32px; }

      .overview-table { padding: 0 20px; }
      .overview-row { grid-template-columns: 1fr; gap: 2px; padding: 16px 0; }
      .overview-row dd { font-size: 15px; }

      .approach-item { padding: 24px 20px; grid-template-columns: 1fr; gap: 4px; }
      .approach-num { font-size: 30px; line-height: 1.2; }
      .approach-body h3 { font-size: 18px; }

      .result-table th,
      .result-table td { padding: 12px 10px; font-size: 14px; }
      .result-table thead th { font-size: 12px; }
      .result-note { font-size: 14px; }
      .result-point { border-left-width: 8px; padding: 20px; }
      .result-point h3 { font-size: 17px; }

      .other-works-title { font-size: 17px; }
      .other-work-title { font-size: 16px; }
      .work-cta { padding: 36px 20px; }
      .work-cta-title { font-size: 20px; }
      .work-cta-desc { font-size: 15px; }

      /* 記事ページ */
      .article-body { font-size: 15px; line-height: 1.9; }
      .article-body h2 { font-size: 20px; border-left-width: 6px; padding-left: 12px; margin-top: 48px; }
      .article-body h3 { font-size: 17px; margin-top: 32px; }
      .article-excerpt { font-size: 14px; }
    }