/* ========================================================
           共通設定 & TOPページ（モダン・複雑なデザイン）CSS
        ======================================================== */
        :root {
            --primary: #003366; 
            --primary-dark: #05162b;
            --accent: #005bb5;
            --text-main: #222222;
            --text-light: #666666;
            --bg-base: #ffffff;
            --bg-gray: #f4f6f9;
            --border-color: #e5e5e5;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Noto Sans JP', sans-serif; color: var(--text-main); line-height: 1.8; background: var(--bg-base); overflow-x: hidden; }
        .en-font { font-family: 'Montserrat', sans-serif; }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; cursor: pointer; }
        img { max-width: 100%; height: auto; display: block; }
        
        /* Header */
        header { position: fixed; top: 0; width: 100%; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(0,0,0,0.05); z-index: 1000; padding: 20px 5%; display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 20px; font-weight: 900; color: var(--primary); letter-spacing: 0.1em; }
        nav ul { display: flex; gap: 40px; list-style: none; }
        nav a { font-size: 13px; font-weight: 700; letter-spacing: 0.05em; position: relative; padding-bottom: 5px; }
        nav a::after { content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--accent); transition: width 0.3s ease; }
        nav a:hover::after { width: 100%; }

        /* ページ切り替えアニメーション */
        /* Multi-page: always visible */
        .page-content { display: block; animation: pageFadeIn 0.8s forwards; }
        @keyframes pageFadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

        /* TOP: Hero */
        .top-hero { position: relative; height: 100vh; min-height: 700px; padding: 0 5%; display: flex; align-items: center; background: var(--bg-gray); overflow: hidden; }
        .hero-bg-text { position: absolute; top: 15%; left: -2%; font-size: 12vw; font-weight: 900; color: rgba(0, 51, 102, 0.03); white-space: nowrap; z-index: 0; }
        .hero-content { position: relative; z-index: 2; width: 50%; padding-right: 50px; }
        .hero-subtitle { font-size: 14px; font-weight: 700; color: var(--accent); letter-spacing: 0.2em; display: flex; align-items: center; margin-bottom: 30px; }
        .hero-subtitle::before { content: ''; display: inline-block; width: 40px; height: 2px; background: var(--accent); margin-right: 15px; }
        .hero-title { font-size: 3.5rem; font-weight: 700; line-height: 1.3; color: var(--primary-dark); margin-bottom: 30px; }
        .hero-desc { font-size: 1.1rem; color: var(--text-light); margin-bottom: 40px; }
        .hero-visual { position: absolute; right: 5%; top: 50%; transform: translateY(-50%); width: 45%; height: 70vh; z-index: 1; }
        .hero-visual-inner { width: 100%; height: 100%; background: url('https://images.unsplash.com/photo-1504307651254-35680f356f58?auto=format&fit=crop&w=1000&q=80') no-repeat center/cover; box-shadow: -20px 20px 50px rgba(0,0,0,0.1); }
        .hero-visual-accent { position: absolute; bottom: -30px; left: -30px; width: 200px; height: 200px; background: var(--accent); z-index: -1; }

        .sec-header { margin-bottom: 60px; position: relative; }
        .sec-header .en { font-size: 5rem; font-weight: 900; color: rgba(0, 51, 102, 0.05); position: absolute; top: -40px; left: -20px; z-index: 0; }
        .sec-header h2 { font-size: 2.2rem; color: var(--primary-dark); position: relative; z-index: 1; padding-left: 20px; border-left: 4px solid var(--accent); }

        /* TOP: Concept */
        .top-concept { padding: 150px 10%; background: var(--bg-base); }
        .concept-wrapper { display: flex; align-items: flex-start; justify-content: space-between; gap: 50px; }
        .concept-text { flex: 1; margin-top: 80px; }
        .concept-text p { font-size: 1.1rem; margin-bottom: 20px; color: var(--text-light); }
        .concept-image { flex: 1; position: relative; }
        .concept-image img { width: 90%; margin-left: auto; box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
        .concept-image::before { content: ''; position: absolute; top: -20px; right: -20px; width: 50%; height: 50%; border: 2px solid var(--border-color); z-index: -1; }

        /* TOP: Services */
        .top-services { padding: 120px 5%; background: var(--bg-gray); }
        .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 50px; }
        .service-card-modern { display: block; background: var(--bg-base); padding: 50px 40px; border-top: 4px solid transparent; transition: all 0.4s ease; position: relative; overflow: hidden; color: inherit; }
        .service-card-modern:hover { border-top-color: var(--accent); transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.06); }
        .service-card-modern .num { font-size: 3rem; font-weight: 900; color: var(--bg-gray); margin-bottom: 20px; display: block; transition: color 0.4s; }
        .service-card-modern:hover .num { color: rgba(0, 91, 181, 0.1); }
        .service-card-modern h3 { font-size: 1.4rem; color: var(--primary); margin-bottom: 20px; line-height: 1.4; }
        .service-card-modern p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 30px; }
        
        /* TOP: Strengths */
        .top-strengths { padding: 150px 5%; background: var(--primary-dark); color: #fff; text-align: center; }
        .top-strengths .sec-header h2 { color: #fff; border-left: none; padding: 0; }
        .top-strengths .sec-header .en { color: rgba(255,255,255,0.05); width: 100%; text-align: center; left: 0; }
        .strength-words { font-size: 3.5vw; font-weight: 900; line-height: 1.5; background: linear-gradient(90deg, #fff, rgba(255,255,255,0.5)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin: 60px 0; }

        /* TOP: Works & Contact */
        .top-works { padding: 120px 10%; background: var(--bg-base); }
        .works-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px 40px; margin-top: 40px; }
        .work-item { background: var(--bg-gray); height: 350px; display: flex; align-items: center; justify-content: center; color: var(--text-light); font-weight: bold; border-radius: 4px; transition: 0.3s; margin-top: 32px; position: relative; }
        .work-item:hover { transform: scale(1.02); }
        .work-item.has-image { position: relative; color: transparent !important; overflow: visible; }
        .work-item .work-label { position: absolute; top: -28px; left: 0; right: 0; color: var(--text-main, #222) !important; font-size: 14px; font-weight: 600; text-align: left; text-shadow: none; background: none; padding: 0; margin: 0; white-space: nowrap; }
        
        .top-contact { padding: 120px 10%; background: var(--accent); color: #fff; text-align: center; }
        .top-contact h2 { font-size: 2.5rem; margin-bottom: 20px; }
        .top-contact p { font-size: 1.2rem; margin-bottom: 40px; }
        .tel-modern { font-size: 4rem; font-weight: 900; font-family: 'Montserrat'; letter-spacing: 0.05em; margin-bottom: 40px; }

        /* 追加：TOP Company & Access */
        .top-company { padding: 120px 10% 60px; background: var(--bg-gray); }
        .top-company-table { width: 100%; border-collapse: collapse; margin-top: 40px; background: #fff; box-shadow: 0 10px 30px rgba(0,0,0,0.03); }
        .top-company-table th, .top-company-table td { padding: 25px; border-bottom: 1px solid var(--border-color); text-align: left; }
        .top-company-table th { width: 25%; color: var(--primary-dark); font-weight: 700; background: rgba(0,51,102,0.03); border-right: 1px solid var(--border-color); }
        
        .top-access { padding: 60px 10% 120px; background: var(--bg-gray); }
        .top-map-wrapper { width: 100%; height: 500px; background: #ddd; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: bold; margin-top: 40px; border-radius: 4px; overflow: hidden;}

        /* Buttons */
        .btn-modern { display: inline-block; padding: 18px 50px; background: var(--accent); color: #fff; font-weight: 700; letter-spacing: 0.1em; position: relative; overflow: hidden; z-index: 1; border: 1px solid #fff; }
        .btn-modern::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: #fff; z-index: -1; transition: left 0.4s ease; }
        .btn-modern:hover { color: var(--primary-dark); }
        .btn-modern:hover::before { left: 0; }
        .btn-modern.dark { background: var(--primary-dark); border-color: var(--primary-dark); }
        .btn-modern.dark:hover { color: var(--primary-dark); }

        /* ========================================================
           フッター（新規作成・サイトマップ型）
        ======================================================== */
        .site-footer { background: #020a14; color: rgba(255, 255, 255, 0.7); padding: 80px 5% 30px; font-size: 0.9rem; }
        .footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 50px; max-width: 1200px; margin: 0 auto; border-bottom: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: 50px; margin-bottom: 30px; }
        .footer-col-main { flex: 2; min-width: 300px; }
        .footer-col-nav { flex: 1; min-width: 150px; }
        .footer-logo { font-size: 1.8rem; font-weight: 900; color: #fff; letter-spacing: 0.1em; margin-bottom: 20px; display: inline-block; font-family: 'Montserrat', sans-serif;}
        .footer-info p { margin-bottom: 10px; line-height: 1.8; }
        .footer-col-nav h4 { color: #fff; font-size: 1.1rem; margin-bottom: 20px; border-bottom: 1px solid var(--accent); padding-bottom: 10px; display: inline-block; }
        .footer-nav-list { list-style: none; padding: 0; }
        .footer-nav-list li { margin-bottom: 12px; }
        .footer-nav-list a { transition: color 0.3s ease; }
        .footer-nav-list a:hover { color: #fff; padding-left: 5px; }
        .footer-bottom { text-align: center; letter-spacing: 0.1em; }

        /* ========================================================
           下層ページ用「BMパーツ集」CSSライブラリ
        ======================================================== */
        .lib-container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
        .img-dummy { background: #cccccc; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: bold; }
        
        .bm-fv-02 { background: var(--bg-gray); padding: 150px 0 80px; text-align: center; margin-bottom: 80px; }
        .bm-fv-02 .caption { font-size: 14px; color: #666; margin-bottom: 10px; }
        .bm-fv-02 h1 { font-size: 32px; color: var(--primary); margin-bottom: 20px; }
        
        .bm-txt-01 { padding: 40px 0; text-align: center; max-width: 800px; margin: 0 auto 80px; font-size: 16px; color: var(--text-main); }

        .bm-grid-01-02 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-bottom: 80px; }
        .bm-grid-01-02 .grid-item { border: 1px solid var(--border-color); padding: 20px; text-align: center; background: #fff; }
        .bm-grid-01-02 .grid-item .img-dummy { height: 200px; margin-bottom: 20px; }

        .bm-flow-01 { display: flex; justify-content: space-between; align-items: center; margin-bottom: 80px; gap: 10px; }
        .bm-flow-01 .step { flex: 1; border: 2px solid var(--primary); padding: 20px; text-align: center; background: #fff; }
        .bm-flow-01 .step-num { font-size: 24px; color: var(--primary); font-weight: bold; margin-bottom: 10px; }
        
        .bm-flow-02 { max-width: 800px; margin: 0 auto 80px; }
        .bm-flow-02 .step { display: flex; border: 1px solid var(--border-color); padding: 30px; margin-bottom: 20px; background: #fff; align-items: center; }
        .bm-flow-02 .step-circle { width: 80px; height: 80px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 30px; flex-shrink: 0; }
        
        .bm-col-2 { display: flex; gap: 40px; margin-bottom: 80px; align-items: center; }
        .bm-col-2.reverse { flex-direction: row-reverse; }
        .bm-col-2 .text-box { flex: 1; }
        .bm-col-2 .text-box h2 { color: var(--primary); border-bottom: 2px solid var(--accent); padding-bottom: 10px; margin-bottom: 20px; font-size: 1.5rem; }
        .bm-col-2 .img-dummy { flex: 1; height: 350px; }

        .bm-table-01-01 { width: 100%; border-collapse: collapse; margin-bottom: 80px; }
        .bm-table-01-01 th, .bm-table-01-01 td { border: 1px solid var(--border-color); padding: 20px; }
        .bm-table-01-01 th { background: var(--primary); color: #fff; width: 30%; text-align: left; }

        .bm-map-01 { margin-bottom: 80px; }
        .bm-map-01 .img-dummy { height: 400px; width: 100%; }

        .bm-cta-01 { background: var(--bg-gray); border: 1px solid var(--border-color); padding: 60px; text-align: center; margin-bottom: 80px; }
        .bm-cta-01 h2 { margin-bottom: 20px; color: var(--primary); font-size: 1.8rem; }

        .bm-wor-02 { margin-bottom: 80px; text-align: center; }
        .bm-wor-02 h2 { margin-bottom: 40px; font-size: 24px; color: var(--primary); }
        .bm-wor-02-inner { display: flex; align-items: center; border: 1px solid var(--border-color); padding: 40px; text-align: left; background: #fff; }
        .bm-wor-02-list { flex: 1; padding-right: 40px; }
        .bm-wor-02-list li { margin-bottom: 15px; list-style: none; position: relative; padding-left: 25px; }
        .bm-wor-02-list li::before { content: '✔'; position: absolute; left: 0; color: var(--accent); font-weight: bold; }
        .bm-wor-02-img { flex: 1; height: 300px; background: #eee; }

        .bm-cnt-22 { margin-bottom: 80px; max-width: 800px; margin-left: auto; margin-right: auto; }
        .bm-cnt-22-item { border: 1px solid var(--border-color); margin-bottom: 15px; background: #fff; }
        .bm-cnt-22-q { background: var(--bg-gray); padding: 20px; font-weight: bold; display: flex; align-items: center; color: var(--primary); }
        .bm-cnt-22-q::before { content: 'Q'; background: var(--primary); color: #fff; width: 30px; height: 30px; display: inline-flex; justify-content: center; align-items: center; margin-right: 15px; font-family: 'Montserrat'; }
        .bm-cnt-22-a { padding: 20px; display: flex; align-items: flex-start; }
        .bm-cnt-22-a::before { content: 'A'; background: var(--accent); color: #fff; width: 30px; height: 30px; display: inline-flex; justify-content: center; align-items: center; margin-right: 15px; font-family: 'Montserrat'; flex-shrink: 0; }

        .bm-flow-04 { max-width: 800px; margin: 0 auto 80px; }
        .bm-flow-04-step { border: 1px solid var(--border-color); background: #fff; padding: 30px; margin-bottom: 40px; display: flex; gap: 30px; align-items: center; position: relative; }
        .bm-flow-04-step::after { content: '▼'; position: absolute; bottom: -30px; left: 50%; transform: translateX(-50%); color: var(--accent); font-size: 20px; }
        .bm-flow-04-step:last-child::after { display: none; }
        .bm-flow-04-text { flex: 1; }
        .bm-flow-04-text span { color: var(--accent); font-weight: bold; display: block; margin-bottom: 10px; font-family: 'Montserrat'; }
        .bm-flow-04-img { flex: 1; height: 200px; }

        .bm-grid-03-03 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; margin-bottom: 80px; }
        .bm-grid-03-03 .grid-item { border: 1px solid var(--border-color); padding: 30px; background: #fff; }
        .bm-grid-03-03 .img-dummy { height: 250px; margin-bottom: 20px; }

        .bm-tl-01 { max-width: 800px; margin: 0 auto 80px; }
        .bm-tl-item { display: flex; margin-bottom: 40px; }
        .bm-tl-year { width: 120px; font-size: 24px; font-weight: 900; color: var(--primary); font-family: 'Montserrat'; border-right: 2px solid var(--border-color); padding-right: 20px; text-align: right; margin-right: 30px; position: relative; }
        .bm-tl-year::after { content: ''; width: 10px; height: 10px; background: var(--accent); border-radius: 50%; position: absolute; right: -6px; top: 10px; }
        .bm-tl-content { flex: 1; padding-top: 5px; }

        /* 追加：お知らせ代用パーツ CNT_15, CNT_16 */
        .bm-cnt-15 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 80px; }
        .bm-cnt-15-item { border: 1px solid var(--border-color); padding: 30px; background: #fff; display: flex; align-items: flex-start; }
        .bm-cnt-15-point { color: var(--accent); font-weight: 900; margin-right: 20px; font-size: 24px; font-family: 'Montserrat'; line-height: 1; }
        
        .bm-cnt-16 { display: flex; flex-wrap: wrap; gap: 15px; margin-bottom: 80px; }
        .bm-cnt-16-item { flex: 1; min-width: 200px; padding: 20px; background: #fff; border: 1px solid var(--border-color); border-left: 6px solid var(--primary); font-weight: bold; color: var(--text-main); }

        /* 画像表示用 */
        .has-image { background-size: cover !important; background-position: center !important; background-repeat: no-repeat !important; color: transparent !important; }

        /* ========================================================
           Hamburger Menu
        ======================================================== */
        .hamburger { display: none; flex-direction: column; gap: 6px; cursor: pointer; z-index: 1001; padding: 10px; position: relative; }
        .hamburger span { display: block; width: 28px; height: 2px; background: var(--primary); transition: all 0.3s ease; }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

        /* ========================================================
           Responsive: Tablet (1024px)
        ======================================================== */
        @media (max-width: 1024px) {
            header { padding: 15px 5%; }
            .hamburger { display: flex !important; }
            nav { position: fixed; top: 0; right: -100%; width: 70%; max-width: 350px; height: 100vh; background: rgba(255,255,255,0.98); backdrop-filter: blur(10px); padding: 100px 40px 40px; transition: right 0.4s ease; box-shadow: -5px 0 30px rgba(0,0,0,0.1); z-index: 1000; }
            nav.open { right: 0; }
            nav ul { flex-direction: column; gap: 0; }
            nav ul li { border-bottom: 1px solid var(--border-color); }
            nav a { display: block; padding: 18px 0; font-size: 15px; }
            .nav-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.4); z-index: 999; }
            .nav-overlay.active { display: block; }

            .top-hero { flex-direction: column; height: auto; min-height: auto; padding: 120px 5% 60px; }
            .hero-content { width: 100%; padding-right: 0; text-align: center; }
            .hero-subtitle { justify-content: center; }
            .hero-title { font-size: 2.2rem; }
            .hero-visual { position: relative; right: auto; top: auto; transform: none; width: 100%; height: auto; aspect-ratio: 16/9; min-height: 250px; margin-top: 40px; }
            .hero-bg-text { font-size: 15vw; top: 5%; }

            .sec-header .en { font-size: 3.5rem; }
            .sec-header h2 { font-size: 1.8rem; }

            .concept-wrapper { flex-direction: column; }
            .concept-text { margin-top: 0; }
            .concept-image { width: 100%; }

            .service-grid { grid-template-columns: repeat(2, 1fr); }

            .strength-words { font-size: 5vw; }

            .works-grid { grid-template-columns: 1fr; }

            .top-company { padding: 80px 5% 40px; }
            .top-access { padding: 40px 5% 80px; }

            .tel-modern { font-size: 2.5rem; }

            .top-contact { padding: 80px 5%; }
            .top-contact h2 { font-size: 2rem; }

            .bm-col-2 { flex-direction: column; }
            .bm-col-2.reverse { flex-direction: column; }
            .bm-col-2 .img-dummy { width: 100%; height: auto; aspect-ratio: 4/3; min-height: 200px; }

            .bm-flow-01 { flex-direction: column; gap: 15px; }
            .bm-flow-01 .step { flex: none; width: 100%; }
            .bm-flow-04-step { flex-direction: column; }
            .bm-flow-04-img { width: 100%; height: auto; aspect-ratio: 3/2; min-height: 150px; }

            .bm-wor-02-inner { flex-direction: column !important; }
            .bm-wor-02-list { padding-right: 0 !important; padding-left: 0 !important; margin-bottom: 20px; }
            .bm-wor-02-img { width: 100%; height: auto; aspect-ratio: 4/3; min-height: 180px; }

            .footer-inner { flex-direction: column; gap: 30px; }
        }

        /* ========================================================
           Responsive: Mobile (640px)
        ======================================================== */
        @media (max-width: 640px) {
            header { padding: 15px 4%; }
            .logo { font-size: 16px; } .logo img { height: 35px !important; }

            .top-hero { padding: 100px 4% 40px; }
            .hero-title { font-size: 1.6rem; }
            .hero-desc { font-size: 0.95rem; }
            .hero-visual { height: auto; aspect-ratio: 4/3; min-height: 200px; }
            .hero-visual-accent { width: 100px; height: 100px; bottom: -15px; left: -15px; }

            .top-concept { padding: 80px 5%; }
            .top-services { padding: 80px 4%; }
            .service-grid { grid-template-columns: 1fr; }
            .service-card-modern { padding: 35px 25px; }
            .service-card-modern .num { font-size: 2.2rem; }
            .service-card-modern h3 { font-size: 1.2rem; }

            .top-strengths { padding: 80px 5%; }
            .strength-words { font-size: 6.5vw; }

            .top-works { padding: 80px 5%; }
            .work-item { height: auto; aspect-ratio: 3/2; min-height: 150px; }

            .top-company-table th, .top-company-table td { padding: 15px; display: block; width: 100%; }
            .top-company-table th { border-right: none; border-bottom: none; }
            .top-company-table tr { display: block; border-bottom: 1px solid var(--border-color); }

            .top-map-wrapper { height: 300px; }

            .sec-header .en { font-size: 2.5rem; top: -25px; }
            .sec-header h2 { font-size: 1.5rem; }

            .top-contact { padding: 60px 5%; }
            .top-contact h2 { font-size: 1.6rem; }
            .top-contact p { font-size: 1rem; }
            .tel-modern { font-size: 1.8rem; }

            .btn-modern { padding: 14px 35px; font-size: 0.9rem; }

            .bm-fv-02 { padding: 120px 4% 60px; }
            .bm-fv-02 h1 { font-size: 24px; }
            .bm-grid-01-02 { grid-template-columns: 1fr; }
            .bm-grid-03-03 { grid-template-columns: 1fr; }
            .bm-cnt-15 { grid-template-columns: 1fr; }

            .bm-flow-02 .step { flex-direction: column; text-align: center; }
            .bm-flow-02 .step-circle { margin: 0 auto 15px; }

            .bm-tl-item { flex-direction: column; }
            .bm-tl-year { width: auto; border-right: none; border-bottom: 2px solid var(--border-color); padding: 0 0 10px; margin: 0 0 15px; text-align: left; }
            .bm-tl-year::after { display: none; }

            .bm-cta-01 { padding: 40px 20px; }
            .bm-cta-01 h2 { font-size: 1.4rem; }

            .site-footer { padding: 50px 5% 20px; }
            .footer-logo { font-size: 1.4rem; }
        }