/* FV (First View) */
        .fv-section {
            min-height: calc(100vh - 80px);
            display: flex;
            align-items: center;
            overflow: hidden;
            position: relative;
        }
        .fv-grid {
            grid-template-columns: 1.2fr 0.8fr;
            align-items: center;
            gap: var(--spacing-lg);
        }
        .fv-content { z-index: 2; }
        .fv-subtitle {
            font-family: var(--font-gothic);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
            display: inline-block;
            border-bottom: 2px solid var(--color-black);
            padding-bottom: 0.2rem;
        }
        .fv-lead {
            font-size: 1.125rem;
            max-width: 40ch;
            margin-bottom: var(--spacing-md);
            line-height: 1.9;
        }
        .fv-actions { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); }

        /* FV Graphic (CSS Abstract Representation) */
        .fv-graphic {
            position: relative;
            height: 500px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-end;
            opacity: 0.9;
        }
        .fv-graphic::before {
            content: "∫ f(x)dx = Maximize Profit";
            font-family: var(--font-mincho);
            font-style: italic;
            font-size: 1.5rem;
            color: var(--color-gray-300);
            position: absolute;
            top: 10%;
            right: 20%;
            transform: rotate(-10deg);
            z-index: 0;
        }
        /* Abstract Funnel/Graph */
        .abstract-funnel {
            width: 80%;
            height: 300px;
            border-left: var(--border-thick);
            border-bottom: var(--border-thick);
            position: relative;
            display: flex;
            align-items: flex-end;
            padding: 0 20px;
            gap: 20px;
        }
        .bar {
            width: 30%;
            background-color: var(--color-gray-200);
            border: 1px solid var(--color-black);
            position: relative;
        }
        .bar-1 { height: 40%; background: repeating-linear-gradient(45deg, transparent, transparent 5px, var(--color-gray-200) 5px, var(--color-gray-200) 10px); }
        .bar-2 { height: 60%; background-color: var(--color-gray-300); }
        .bar-3 { height: 100%; background-color: var(--color-black); } /* The "Theoretical Value" */
        .bar::after {
            content: '';
            position: absolute;
            top: -30px;
            left: 50%;
            transform: translateX(-50%);
            font-family: var(--font-mincho);
            font-size: 0.9rem;
        }
        .bar-1::after { content: '感覚'; }
        .bar-2::after { content: 'データ'; }
        .bar-3::after { content: '理論値'; color: var(--color-black); font-weight: bold;}


        /* Problem Section */
        .problem-grid {
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            margin-top: var(--spacing-lg);
        }
        .problem-card {
            background-color: var(--color-white);
            border: var(--border-thin);
            padding: var(--spacing-md);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .problem-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border-color: var(--color-gray-300);
        }
        .problem-num {
            font-family: var(--font-mincho);
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-gray-300);
            line-height: 1;
            margin-bottom: var(--spacing-sm);
        }
        .problem-card p {
            font-family: var(--font-mincho);
            font-size: 1.1rem;
            color: var(--color-black);
            font-weight: 500;
            line-height: 1.7;
        }

        /* Concept Section */
        .concept-text { max-width: 800px; margin: 0 auto; text-align: center; }
        .concept-text p { font-size: 1.125rem; }
        .process-flow {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: var(--spacing-lg);
            max-width: 900px;
            margin-inline: auto;
        }
        @media (min-width: 768px) {
            .process-flow { flex-direction: row; align-items: center; justify-content: space-between; }
        }
        .process-box {
            flex: 1;
            border: 1px solid var(--color-black);
            padding: var(--spacing-md);
            text-align: center;
            background-color: var(--color-white);
            position: relative;
        }
        .process-box.active {
            background-color: var(--color-black);
            color: var(--color-white);
        }
        .process-box.active .mincho, .process-box.active p { color: var(--color-white); }
        .process-box h4 { font-size: 1.25rem; margin-bottom: 0.5rem; letter-spacing: 0.1em; }
        .process-box p { margin: 0; font-size: 0.9rem; }
        .process-arrow {
            font-family: var(--font-mincho);
            font-size: 2rem;
            color: var(--color-gray-300);
            text-align: center;
            padding: 1rem 0;
        }
        @media (min-width: 768px) {
            .process-arrow { padding: 0 1rem; }
        }

        /* Team Section */
        .team-grid {
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            margin-top: var(--spacing-lg);
        }
        .team-member {
            border-top: var(--border-thick);
            padding-top: var(--spacing-md);
        }
        .team-role {
            font-family: var(--font-gothic);
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-gray-600);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 0.25rem;
        }
        .team-name { font-size: 1.5rem; margin-bottom: 1rem; }
        .team-tagline {
            font-family: var(--font-gothic);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: var(--spacing-sm);
        }

        /* Service Catalog Section */
        .service-catalog-grid {
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            margin-top: var(--spacing-lg);
        }
        .catalog-card {
            background-color: var(--color-white);
            border: var(--border-thin);
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
        }
        .catalog-card:hover {
            border-color: var(--color-black);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .catalog-card-header {
            border-bottom: 2px solid var(--color-black);
            padding-bottom: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }
        .catalog-en-title {
            font-family: var(--font-gothic);
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-gray-600);
            text-transform: uppercase;
            letter-spacing: 0.1em;
        }
        .catalog-ja-title {
            font-family: var(--font-mincho);
            font-size: 1.25rem;
            font-weight: 700;
            margin-top: 0.25rem;
            line-height: 1.4;
        }
        .catalog-list {
            list-style: none;
        }
        .catalog-list li {
            position: relative;
            padding-left: 1.25rem;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
            color: var(--color-gray-800);
            line-height: 1.6;
        }
        .catalog-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.55rem;
            width: 4px;
            height: 4px;
            background-color: var(--color-black);
            border-radius: 50%;
        }

        /* Steps Section */
        .steps-container { max-width: 800px; margin: var(--spacing-lg) auto 0; }
        .step-item {
            display: flex;
            flex-direction: column;
            border: var(--border-thin);
            background-color: var(--color-white);
            margin-bottom: var(--spacing-sm);
            padding: var(--spacing-md);
        }
        @media (min-width: 600px) {
            .step-item { flex-direction: row; align-items: flex-start; }
        }
        .step-label {
            flex-shrink: 0;
            width: 150px;
            font-family: var(--font-gothic);
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--color-gray-600);
            margin-bottom: 1rem;
        }
        .step-label .step-price {
            display: inline;
            font-family: sans-serif;
            font-size: 0.8rem;
            font-weight: normal;
            color: #666;
        }
        .step-label span {
            display: block;
            font-family: var(--font-mincho);
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-black);
            line-height: 1;
            margin-bottom: 0.25rem;
        }
        .step-content h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }
        .step-content p { margin: 0; font-size: 0.95rem; }
        .step-notice {
            text-align: center;
            font-size: 0.85rem;
            color: var(--color-gray-600);
            margin-top: var(--spacing-md);
        }

        /* Form UI */
        .form-container {
            max-width: 700px;
            margin: var(--spacing-lg) auto 0;
            background-color: var(--color-white);
            color: var(--color-black);
            padding: var(--spacing-lg);
            border: var(--border-thin);
        }
        .form-notice {
            text-align: center;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
            padding-bottom: var(--spacing-sm);
            border-bottom: 1px dashed var(--color-gray-300);
        }
        .form-container .form-notice { color: var(--color-black); }
        .form-group { margin-bottom: var(--spacing-md); }
        .form-fieldset { border: 0; min-width: 0; }
        .form-label {
            display: block;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.6;
        }
        .form-container .form-label { color: var(--color-black); }
        .form-label .req {
            background-color: var(--color-black);
            color: var(--color-white);
            font-size: 0.7rem;
            padding: 0.1rem 0.4rem;
            margin-left: 0.5rem;
            vertical-align: middle;
        }
        .form-label .opt {
            background-color: var(--color-gray-200);
            color: var(--color-gray-600);
            font-size: 0.7rem;
            padding: 0.1rem 0.4rem;
            margin-left: 0.5rem;
            vertical-align: middle;
        }

        /* Custom Radio Buttons */
        .radio-grid { display: grid; gap: 0.5rem; }
        .radio-label {
            display: flex;
            align-items: center;
            padding: 1rem;
            border: 1px solid var(--color-gray-300);
            cursor: pointer;
            transition: var(--transition-fast);
            background-color: var(--color-gray-100);
            line-height: 1.6;
            color: var(--color-black);
        }
        .radio-label:hover { border-color: var(--color-black); }
        .form-container .radio-label { color: var(--color-black); }
        .radio-label:focus-within {
            border-color: var(--color-black);
            outline: 2px solid var(--color-black);
            outline-offset: 2px;
        }
        .radio-label.is-selected {
            background-color: var(--color-black);
            border-color: var(--color-black);
            color: var(--color-white);
        }
        .radio-label input {
            flex: 0 0 auto;
            margin: 0.35rem 0 0;
            accent-color: var(--color-black);
            width: 1.2rem;
            height: 1.2rem;
        }
        .radio-label.is-selected input { accent-color: var(--color-white); }
        .form-fieldset.has-error .radio-label { border-color: #b91c1c; }
        .form-fieldset.has-error .radio-label:focus-within { outline-color: #b91c1c; }

        /* Inputs */
        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid var(--color-gray-300);
            font-family: var(--font-gothic);
            font-size: 1rem;
            background-color: var(--color-gray-100);
            transition: var(--transition-fast);
            border-radius: 0;
            color: var(--color-black);
            line-height: 1.5;
        }
        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: 2px solid var(--color-black);
            outline-offset: 2px;
            border-color: var(--color-black);
            background-color: var(--color-white);
        }
        .form-input::placeholder, .form-textarea::placeholder {
            color: var(--color-gray-600);
            opacity: 1;
        }
        .form-input[aria-invalid="true"], .form-select[aria-invalid="true"], .form-textarea[aria-invalid="true"] {
            border-color: #b91c1c;
            background-color: #fff7f7;
        }
        .form-textarea { resize: vertical; min-height: 120px; }
        .form-submit { margin-top: var(--spacing-md); text-align: center; }
        .form-submit .btn { width: 100%; max-width: 300px; padding: 1.25rem; font-size: 1.1rem; }
        .form-submit-status {
            min-height: 1.8em;
            margin: 0.75rem 0 0;
            color: var(--color-gray-800);
            font-size: 0.9rem;
        }
        .form-message {
            margin: 0.75rem 0 0;
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .form-message--error {
            color: #991b1b;
            background-color: #fef2f2;
            border: 1px solid #fecaca;
        }
        .form-honeypot {
            position: absolute !important;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-black);
            outline-offset: 3px;
        }
        .btn:disabled {
            cursor: not-allowed;
            opacity: 0.6;
        }
        .btn-primary:disabled:hover {
            background-color: var(--color-black);
            color: var(--color-white);
        }

        /* Contact completion modal */
        .contact-modal {
            position: fixed;
            inset: 0;
            z-index: 1100;
            display: grid;
            place-items: center;
            padding: 1rem;
            background-color: rgba(10, 10, 10, 0.78);
        }
        .contact-modal__panel {
            width: min(100%, 520px);
            max-height: calc(100vh - 2rem);
            overflow-y: auto;
            padding: var(--spacing-lg) var(--spacing-md);
            background-color: var(--color-white);
            border: 1px solid var(--color-gray-300);
            color: var(--color-black);
            text-align: center;
        }
        .contact-modal__icon {
            display: block;
            width: 4rem;
            height: 4rem;
            margin: 0 auto var(--spacing-md);
            padding: 0.8rem;
            border: 2px solid var(--color-black);
            color: var(--color-black);
        }
        .contact-modal__title {
            margin-bottom: var(--spacing-md);
            font-size: clamp(1.35rem, 4vw, 2rem);
            line-height: 1.5;
        }
        .contact-modal__panel .btn { min-width: 150px; }

        /* Responsive Adjustments */
        @media (max-width: 768px) {
            .nav-links, .header-cta .btn-outline { display: none; } /* Simplified mobile header */
            .fv-grid { grid-template-columns: 1fr; text-align: center; }
            .fv-subtitle { margin-inline: auto; }
            .fv-lead { margin-inline: auto; }
            .fv-actions { justify-content: center; }
            .fv-graphic { height: 300px; align-items: center; }
            .fv-graphic::before { display: none; }
        }
        @media (max-width: 600px) {
            .form-container { padding: var(--spacing-md); }
            .form-notice { font-size: 0.9rem; line-height: 1.6; }
            .radio-label { padding: 0.85rem; }
            .form-submit .btn { max-width: none; }
            .contact-modal__panel { padding: var(--spacing-md) var(--spacing-sm); }
        }