/* ==========================================================================
   Responsive Styles
   SP対応スタイル（@media max-width）
   ========================================================================== */

/* --------------------------------------------------------------------------
   タブレット（1024px以下）
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  /* Header */
  .header-nav-list {
    gap: 20px;
  }
}

/* --------------------------------------------------------------------------
   スマートフォン（768px以下）
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  /* 表示制御 */
  .pc-only {
    display: none;
  }

  .sp-only {
    display: block;
  }

  .sp-br {
    display: block;
  }

  .pc-br {
    display: none;
  }

  /* セクション余白の調整 */
  .section-padding {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
  }

  .section-padding-sm {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-lg);
  }

  /* Header SP */
  .header-inner {
    height: 60px;
  }

  .header-logo {
    position: relative;
    z-index: 1001;
  }

  .header-logo-img {
    height: 24px;
  }

  body.is-menu-open .header-logo-img {
    content: url("/image/logo.png");
  }

  .header-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: none;
    height: 100vh;
    background-color: var(--color-white);
    padding: 100px var(--space-lg) var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) var(--easing), visibility var(--transition-speed) var(--easing);
    box-shadow: none;
  }

  .header-nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .header-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .header-nav-item {
    width: 100%;
    border-bottom: 1px solid var(--color-gray-light);
  }

  .header-nav-link {
    display: block;
    padding: 16px 0;
    font-size: var(--fz-base);
  }

  .header-nav.is-open .header-nav-link {
    color: var(--color-black);
  }

  .header-nav.is-open .header-nav-link--contact {
    color: var(--color-white);
  }

  .header-nav-link::after {
    display: none;
  }

  .header-nav-link--contact {
    margin-top: var(--space-md);
    text-align: center;
    border-radius: var(--radius-sm);
  }

  /* Header submenu SP（クリックで開閉） */
  .header-nav-item--has-sub {
    position: relative;
    display: block;
    height: auto;
  }

  .header-nav-sub-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    right: 0;
    width: 56px;
    height: 56px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
  }

  .header-nav-sub-toggle-icon {
    position: relative;
    display: block;
    width: 12px;
    height: 12px;
  }

  .header-nav-sub-toggle-icon::before,
  .header-nav-sub-toggle-icon::after {
    content: "";
    position: absolute;
    background-color: var(--color-black);
  }

  .header-nav-sub-toggle-icon::before {
    top: 5px;
    left: 0;
    width: 12px;
    height: 2px;
  }

  .header-nav-sub-toggle-icon::after {
    top: 0;
    left: 5px;
    width: 2px;
    height: 12px;
    transition: opacity var(--transition-speed) var(--easing);
  }

  .header-nav-item--has-sub.is-open .header-nav-sub-toggle-icon::after {
    opacity: 0;
  }

  .header-submenu {
    position: static;
    transform: none;
    min-width: 0;
    padding: 0;
    background: none;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) var(--easing);
  }

  .header-submenu::before {
    display: none;
  }

  .header-nav-item--has-sub.is-open .header-submenu {
    max-height: 320px;
  }

  .header-submenu-item {
    border-top: 1px solid var(--color-gray-light);
  }

  .header-submenu-link {
    display: block;
    padding: 13px 0 13px 16px;
    font-family: var(--font-jp);
    font-size: var(--fz-sm);
    color: var(--color-gray);
    text-decoration: none;
  }

  .header-hamburger {
    display: flex;
  }

  .header-hamburger.is-active .header-hamburger-line {
    background-color: var(--color-black);
  }

  body.is-menu-open {
    overflow: hidden;
  }

  /* Footer SP */
  .footer {
    padding: var(--space-xl) 0 var(--space-md);
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding-bottom: var(--space-xl);
  }

  .footer-logo-img {
    height: 44px;
  }

  .footer-bottom-main {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-lg);
  }

  .footer-nav {
    flex-direction: column;
    justify-content: flex-start;
    gap: var(--space-lg);
  }

  .footer-bottom {
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .footer-legal {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  /* Section Title SP */
  .section-title-en {
    font-size: clamp(38px, 11vw, 44px);
  }

  .section-title-jp {
    font-size: var(--fz-base);
  }

  /* Page Title SP */
  .page-title {
    padding: var(--space-xl) 0 var(--space-lg);
  }

  .page-title-bg {
    top: 45%;
  }

  .page-title-en {
    font-size: var(--fz-xl);
  }

  .breadcrumb {
    display: none;
  }

  /* Hero SP */
  .hero {
    height: auto;
    min-height: 0;
    padding-top: 200px;
    padding-bottom: 0;
    flex-direction: column;
  }

  .hero-content {
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
    padding-bottom: var(--space-lg);
  }

  .hero-catch-line:first-child {
    padding-left: 28px;
  }

  .hero-catch-line:first-child::before {
    width: 20px;
  }

  .hero-catch-line:last-child {
    padding-left: 28px;
  }

  .hero-sub {
    max-width: none;
  }

  /* Hero Bottom Stats */
  .hero-bottom-stats {
    position: static;
    flex-direction: column;
    width: 100%;
  }

  .hero-bstat-item {
    position: relative;
    justify-content: center;
    padding: 14px 20px;
    gap: 14px;
  }

  .hero-bstat-text {
    align-items: center;
    flex: 0 0 auto;
  }

  .hero-bstat-arrow {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 0;
  }

  .hero-bstat-item:hover .hero-bstat-arrow {
    transform: translateY(-50%) translateX(3px);
  }

  .hero-bstat-divider {
    width: auto;
    height: 1px;
    margin: 0 20px;
  }

  .hero-bstat-number {
    font-size: clamp(28px, 6vw, 36px);
  }

  .hero-bstat-jp {
    white-space: normal;
  }

  .hero-cta {
    flex-direction: column;
    gap: 14px;
  }

  .hero-btn {
    justify-content: center;
  }

  .hero-btn-text-en {
    display: none;
  }

  .hero-catch {
    font-size: clamp(32px, 8vw, 42px);
  }

  .hero-bg-text {
    font-size: 60px;
    right: -10px;
  }

  /* About SP */
  .about-catch {
    font-size: var(--fz-xl);
  }

  .about-body {
    max-width: 100%;
  }

  .about-philosophy {
    white-space: normal;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    max-width: 100%;
  }

  .about-stat {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: var(--space-md) var(--space-sm);
    text-align: center;
  }

  .about-stat-top {
    justify-content: center;
  }

  .about-stat-number {
    font-size: 36px;
    margin-bottom: 0;
  }

  .about-stat-en,
  .about-stat-jp {
    text-align: center;
    white-space: nowrap;
  }

  .about-btn-text-en {
    display: none;
  }

  /* Service SP */
  .service-card {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    padding: var(--space-lg) 0;
  }

  .service-card--reverse {
    direction: ltr;
  }

  .service-card-img {
    order: -1;
  }

  .service-card-num {
    font-size: 48px;
  }

  .service-card-title {
    font-size: var(--fz-lg);
  }

  .service-lead {
    font-size: var(--fz-xl);
  }

  /* Service V2 */
  .service-v2-cards {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .service-v2-lead {
    font-size: var(--fz-xl);
  }

  /* Works SP */
  .works-slider {
    padding-left: 0;
    overflow: hidden;
    margin-left: calc(-1 * var(--container-padding));
    margin-right: calc(-1 * var(--container-padding));
  }

  .works-slide {
    flex: 0 0 100vw;
    min-width: 100vw;
    padding: 0 var(--container-padding);
  }

  .works-slide-link {
    padding: 28px 20px 36px;
  }

  .works-slide-title {
    font-size: var(--fz-lg);
  }

  .works-controls {
    flex-direction: column;
    gap: var(--space-md);
  }

  /* Service Scroll-Driven SP */
  .svc-scroll {
    height: auto;
    border-radius: 80px 80px 0 0;
  }

  .svc-scroll-sticky {
    position: relative;
    height: auto;
    padding: var(--space-xl) 0;
  }

  .svc-scroll-body {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding-left: 0;
  }

  .svc-scroll-nav {
    display: none;
  }

  .svc-scroll-visual {
    display: none;
  }

  .svc-sp-image {
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-md);
  }

  .svc-sp-image img {
    width: 100%;
    height: auto;
    display: block;
  }

  .svc-scroll-content {
    min-height: auto;
  }

  .svc-scroll-item {
    position: relative;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-gray-border);
    padding-bottom: var(--space-xl);
  }

  .svc-scroll-item:last-of-type {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
  }

  .svc-scroll-bg-num {
    display: none;
  }

  .svc-scroll-title {
    font-size: var(--fz-lg);
  }

  /* Members SP */
  .members {
    border-radius: 80px 80px 0 0;
  }

  .members-card {
    flex-direction: column;
  }

  .members-card:nth-child(even) {
    flex-direction: column;
  }

  .members-card-img-wrap {
    width: 100%;
  }

  .members-grid {
    max-width: 400px;
  }

  .members-card-name {
    font-size: var(--fz-lg);
  }

  /* News SP */
  .news-inner {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .news-left {
    position: static;
  }

  .news-more {
    display: none;
  }

  .news-sp-more {
    display: flex;
    justify-content: center;
    margin-top: var(--space-lg);
  }

  /* CTA SP */
  .news {
    border-radius: 80px 80px 0 0;
  }

  .cta-catch {
    font-size: var(--fz-lg);
    white-space: nowrap;
  }

  .cta-btn {
    width: 100%;
    justify-content: center;
    padding: 16px 32px;
  }

  /* Page Title SP */
  .page-title {
    padding-top: 120px;
  }

  /* Company Layout SP */
  .company-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .company-toc {
    position: static;
    display: block;
    overflow: visible;
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: var(--space-xl);
  }

  .company-toc-nav {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 14px 20px;
    width: 100%;
  }

  .company-toc-list {
    display: contents;
  }

  .company-toc-list li {
    display: contents;
  }

  .company-toc-heading {
    display: none;
  }

  .company-toc-heading.company-toc-link {
    display: inline-flex;
    margin-top: 0;
  }

  .company-toc-heading::before {
    display: none;
  }

  .company-toc-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0;
    white-space: nowrap;
    font-family: var(--font-jp);
    font-size: var(--fz-base);
    font-weight: var(--fw-semibold);
    color: var(--color-black);
    line-height: 1.4;
  }

  .company-toc-link::after {
    content: "";
    display: inline-block;
    order: -1;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background-color: var(--color-gray-light);
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23333' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 4v8M5 9l3 3 3-3'/%3E%3C/svg%3E");
    background-size: 12px 12px;
    background-repeat: no-repeat;
    background-position: center;
    flex-shrink: 0;
  }

  .company-toc-link.is-active {
    color: var(--color-primary);
    border-bottom: none;
  }

  .company-main {
    border-left: none;
    padding-left: 0;
  }

  /* Company Members SP */
  .company-member-card {
    flex-direction: column;
  }

  .company-member-img-wrap {
    width: 240px;
    margin: 0 auto;
  }

  .company-member-body {
    padding-top: var(--space-md);
  }

  .company-member-name {
    font-size: var(--fz-xl);
  }

  .company-member-info-row {
    flex-direction: column;
    gap: 4px;
  }

  .company-member-info-row dt {
    width: auto;
  }

  .company-section-title-en {
    font-size: var(--fz-xl);
  }

  /* Company Info Table SP */
  .company-info-table th,
  .company-info-table td {
    display: block;
    width: 100%;
  }

  .company-info-table th {
    padding-bottom: 4px;
    border-bottom: none;
  }

  .company-info-table td {
    padding-top: 0;
  }

  /* Company Access SP */
  .company-access-map iframe {
    height: 280px;
  }

  /* Works Layout SP */
  .works-layout {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .works-sidebar {
    position: static;
  }

  .works-sidebar-nav {
    flex-direction: row;
  }

  .works-sidebar-link {
    flex: 1;
    text-align: center;
    padding: 14px 16px;
    font-size: var(--fz-sm);
  }

  /* Works Page SP */
  .works-page-grid {
    grid-template-columns: 1fr;
  }

  /* Case Studies SP */
  .case-item {
    padding: var(--space-xl) 0;
  }

  .case-item-title {
    font-size: var(--fz-lg);
  }

  /* News Page SP */
  .news-page-item {
    flex-direction: column;
    gap: 4px;
  }

  .news-page-item-meta {
    min-width: auto;
  }

  /* News Detail SP */
  .news-article-title {
    font-size: var(--fz-xl);
  }

  /* Contact Page SP */
  .contact-page-lead {
    text-align: left;
  }

  .contact-form-checkboxes {
    flex-direction: column;
    gap: 12px;
  }

  .contact-form-btn {
    width: 100%;
    min-width: auto;
  }

  /* Thanks Page SP */
  .thanks-card {
    padding: var(--space-xl) var(--space-md);
  }

  .thanks-heading {
    font-size: var(--fz-lg);
  }

  /* Service Overview SP */
  .svc-overview-card {
    padding: var(--space-md);
  }

  .svc-overview-card-head {
    flex-direction: column;
    gap: 4px;
  }

  .svc-overview-card-en {
    margin-left: 0;
  }

  .svc-overview-card-arrow {
    right: var(--space-md);
    bottom: var(--space-md);
  }

  /* Service Detail SP */
  .svc-detail-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .svc-detail-title {
    font-size: var(--fz-xl);
  }

  .svc-detail-item {
    padding: var(--space-md);
  }

  /* FAQ SP */
  .svc-faq-question-text {
    font-size: var(--fz-base);
  }

  .svc-faq-answer p {
    padding-left: 48px;
    font-size: var(--fz-sm);
  }

  /* Legal Pages SP */
  .legal-section-title {
    font-size: var(--fz-md);
  }

  .legal-info-row {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
    padding: var(--space-sm) 0;
  }

  /* ==========================================================================
     EKC LP — Responsive
     ========================================================================== */
  .ekc-section {
    margin-bottom: var(--space-2xl);
  }

  .ekc-worry-grid,
  .ekc-service-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
  }

  .ekc-worry-card {
    padding: var(--space-md);
  }

  .ekc-worry-bridge {
    margin-top: var(--space-xl);
    padding: var(--space-md) 0;
  }

  .ekc-worry-bridge-text {
    font-size: var(--fz-md);
  }

  .ekc-worry-bridge-arrow {
    width: 44px;
    height: 44px;
  }

  .ekc-reason-list {
    gap: var(--space-lg);
    margin-top: var(--space-lg);
  }

  .ekc-reason-item,
  .ekc-reason-item:nth-child(even) {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .ekc-reason-num {
    margin-bottom: var(--space-xs);
  }

  .ekc-reason-item:nth-child(even) .ekc-reason-img {
    order: 0;
  }

  .ekc-reason-item:nth-child(even) .ekc-reason-body {
    order: 0;
  }

  .ekc-reason-title {
    font-size: var(--fz-lg);
  }

  /* Plan table → 横スクロールで表示 */
  .ekc-plan-wrap {
    margin-top: var(--space-lg);
  }

  .ekc-plan-table {
    min-width: 680px;
  }

  .ekc-plan-col--group {
    width: 48px;
  }

  .ekc-plan-col--item {
    width: 170px;
  }

  .ekc-plan-option {
    margin-top: var(--space-md);
  }

  .ekc-plan-option-card {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    padding: var(--space-md);
  }

  .ekc-plan-cta {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
  }

  .ekc-plan-cta .about-btn {
    width: 100%;
    justify-content: center;
  }

  /* CTA action buttons */
  .cta-action {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-action .about-btn {
    width: 100%;
    justify-content: center;
  }

  /* Works grid */
  .ekc-works-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-top: var(--space-lg);
  }

  .ekc-works-meta-row {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .ekc-works-meta-row:last-child {
    padding-bottom: 0;
  }

  .ekc-works-text {
    margin-top: 0;
  }

  /* Flow */
  .ekc-flow {
    margin-top: var(--space-lg);
  }

  .ekc-flow-item {
    gap: var(--space-md);
    padding-bottom: var(--space-lg);
  }

  .ekc-flow-circle {
    width: 48px;
    height: 48px;
  }

  .ekc-flow-item::before {
    top: 48px;
    left: 24px;
    height: calc(100% - 48px);
  }

  .ekc-flow-num {
    font-size: var(--fz-base);
  }

  .ekc-flow-title {
    font-size: var(--fz-md);
  }

  /* ページ固有のレスポンシブスタイルをここに追記 */
}