/* =============================================
RESET & BASE
 ============================================= */
  *,
  *::before,
  *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  :root {
    --primary: #210040;
    --secondary: #7e3aaf;
    --tertiary: #a73aaf;
    --bg: #ffffff;
    --text: #333333;
    --gradient-hero: linear-gradient(135deg, #210040 0%, #7e3aaf 100%);
    --gradient-cta: linear-gradient(90deg, #7e3aaf, #a73aaf);
    --header-h: 64px;
    --bar-h: 60px;
  }

  body {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text);
    background: var(--bg);
    padding-top: var(--header-h);
    padding-bottom: var(--bar-h);
  }

  img {
    max-width: 100%;
    height: auto;
    display: block;
  }

  a {
    color: inherit;
  }

  /* =============================================
 LAYOUT HELPERS
 ============================================= */
  .container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
  }

  .section {
    padding: 72px 0;
  }

  .section-alt {
    background: #f7f3fc;
  }

  .section-dark {
    background: var(--gradient-hero);
  }

  .section-cta {
    background: var(--gradient-hero);
    padding: 56px 0;
    text-align: center;
  }

  .section-title {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin-bottom: 12px;
  }

  .section-dark .section-title {
    color: #fff;
  }

  .section-subtitle {
    font-size: 0.95rem;
    color: #666;
    text-align: center;
    margin-bottom: 48px;
  }

  .section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
  }

  .section-title-gap {
    margin-bottom: 48px;
  }

  /* =============================================
 GRID
 ============================================= */
  .grid {
    display: grid;
    gap: 24px;
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

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

  /* =============================================
 BUTTONS
 ============================================= */
  .btn {
    display: inline-block;
    padding: 13px 30px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s, transform 0.15s;
    white-space: nowrap;
  }

  .btn:hover {
    opacity: 0.86;
    transform: translateY(-2px);
  }

  .btn-primary {
    background: var(--gradient-cta);
    color: #fff;
  }

  .btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.85);
    color: #fff;
    background: transparent;
  }

  .btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
  }

  .btn-outline-dark {
    border: 2px solid rgba(255, 255, 255, 0.6);
    color: #fff;
    background: transparent;
  }

  .btn-outline-dark:hover {
    background: rgba(255, 255, 255, 0.1);
  }

  .btn-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  /* =============================================
 HEADER
 ============================================= */
  #site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: #fff;
    box-shadow: 0 2px 12px rgba(33, 0, 64, 0.1);
    z-index: 1000;
  }

  .header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  /* Logo */
  .header-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
  }

  .logo-img[src=""],
  .logo-img:not([src]) {
    display: none;
  }

  .logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
  }

  /* Tab Nav */
  .tab-nav {
    flex: 1;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    min-width: 0;
  }

  .tab-nav::-webkit-scrollbar {
    display: none;
  }

  .tab-scroll-inner {
    display: flex;
    white-space: nowrap;
    min-width: max-content;
  }

  .tab-btn {
    flex-shrink: 0;
    scroll-snap-align: start;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 0 1.25rem;
    height: var(--header-h);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    color: #777;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
  }

  .tab-btn:hover {
    color: var(--secondary);
  }

  .tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--secondary);
  }

  /* Header CTA */
  .header-cta-group {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    align-items: center;
  }

  .header-cta {
    flex-shrink: 0;
    padding: 9px 20px;
    font-size: 0.875rem;
  }

  .header-cta-outline {
    border: 2px solid var(--secondary);
    color: var(--secondary);
    background: transparent;
  }

  .header-cta-outline:hover {
    background: #f3e8ff;
    opacity: 1;
  }

  @media (max-width: 768px) {
    .header-cta-outline {
      display: none;
    }
  }

  /* =============================================
 LANGUAGE SWITCHER
 ============================================= */
  .lang-switcher {
    position: relative;
    flex-shrink: 0;
  }

  .lang-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    border-radius: 6px;
    padding: 6px 12px;
    font-family: inherit;
    font-size: 0.825rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
  }

  .lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
  }

  .lang-dropdown {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 -4px 24px rgba(33, 0, 64, 0.15);
    min-width: 200px;
    z-index: 2000;
    overflow: hidden;
  }

  .lang-dropdown.open {
    display: block;
  }

  .lang-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 12px 16px;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.875rem;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s;
    color: var(--text);
  }

  .lang-option:hover {
    background: #f3e8ff;
  }

  .lang-option.selected {
    background: #f3e8ff;
    color: var(--secondary);
    font-weight: 600;
  }

  .lang-check {
    color: var(--secondary);
    font-weight: 700;
    font-size: 0.9rem;
  }

  /* =============================================
 TAB PANELS
 ============================================= */
  .tab-panel {
    display: none;
  }

  .tab-panel.active {
    display: block;
  }

  /* =============================================
 HERO
 ============================================= */
  .hero {
    background: var(--gradient-hero);
    color: #fff;
    padding: 88px 0 0;
    text-align: center;
  }

  .hero h1 {
    font-size: clamp(26px, 3.8vw, 44px);
    font-weight: 700;
    line-height: 1.45;
    margin-bottom: 20px;
  }

  .hero p {
    font-size: clamp(14px, 1.2vw, 17px);
    line-height: 1.9;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-image {
    margin-top: 56px;
    overflow: hidden;
    box-shadow: 0 -12px 80px rgba(33, 0, 64, 0.5);
    max-width: 1440px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 32px;
  }

  .hero-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px 20px 0 0;
  }

  /* =============================================
 CARDS (general)
 ============================================= */
  .card {
    background: #fff;
    border-radius: 12px;
    padding: 32px 24px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.07);
    border-top: 4px solid var(--secondary);
  }

  .section-alt .card {
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.05);
  }

  .card-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
  }

  .value-cards {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .card-horizontal {
    display: flex;
    align-items: center;
    gap: 40px;
  }

  .card-horizontal .card-text {
    flex: 1;
  }

  .card-horizontal .card-img {
    flex: 0 0 52%;
    width: 52%;
    height: auto;
    object-fit: contain;
    margin: 0;
    border-radius: 8px;
  }

  @media (max-width: 768px) {
    .card-horizontal {
      flex-direction: column;
    }

    .card-horizontal .card-img {
      width: 100%;
      flex: none;
    }
  }

  .card h3 {
    font-size: 1.0rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
    line-height: 1.55;
  }

  .card p {
    font-size: 0.9rem;
    color: #555;
  }

  /* =============================================
 IMAGE PLACEHOLDER
 ============================================= */
  .placeholder-wrapper {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #eeecf2;
    border: 2px dashed #c8bedb;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }

  .placeholder-wrapper::after {
    content: attr(data-label);
    color: #9a8aaa;
    font-size: 12px;
    font-family: 'Noto Sans JP', sans-serif;
    text-align: center;
    padding: 8px 16px;
    line-height: 1.6;
  }

  .screenshot-placeholder {
    display: none;
  }

  /* =============================================
 LEARNING STEPS (Tab 1)
 ============================================= */
  .steps-subtitle {
    font-size: 0.9rem;
    font-weight: 600;
    color: #7e3aaf;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
  }

  .steps-outer {
    position: relative;
    overflow: hidden;
    margin-top: 40px;
  }

  .steps-track {
    display: flex;
    align-items: flex-start;
    gap: 0;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .step-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(33, 0, 64, 0.08);
    padding: 20px 18px 22px;
    flex: 0 0 270px;
    width: 270px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .step-label {
    font-size: 1.1rem;
    font-weight: 700;
    color: #7e3aaf;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .step-img-wrapper {
    width: 100%;
    height: 420px;
    border-radius: 8px;
    overflow: hidden;
    background: #eeecf2;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .step-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
  }

  .step-text {
    font-size: 14px;
    line-height: 1.8;
    color: #555;
    flex: 1;
  }

  .step-arrow {
    flex-shrink: 0;
    align-self: center;
    font-size: 1.5rem;
    color: #7e3aaf;
    padding: 0 10px;
    margin-top: -16px;
  }

  /* Scroll hint wrapper */
  .scroll-hint-wrap {
    position: relative;
  }

  .scroll-hint-wrap::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: calc(100% - 18px);
    background: linear-gradient(to right, transparent, #fff 90%);
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1;
  }

  .scroll-hint-wrap.scrolled-end::after {
    opacity: 0;
  }

  .scroll-hint-label {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    font-size: 0.78rem;
    color: #7e3aaf;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: 0.03em;
  }

  .scroll-hint-label span {
    animation: nudge 1.4s ease-in-out infinite;
    display: inline-block;
  }

  @keyframes nudge {

    0%,
    100% {
      transform: translateX(0);
    }

    50% {
      transform: translateX(5px);
    }
  }

  /* PC: horizontal scroll wrapper */
  .steps-pc {
    display: flex;
    align-items: stretch;
    overflow-x: auto;
    gap: 0;
    scrollbar-width: thin;
    scrollbar-color: #7e3aaf #e8dff5;
    padding-bottom: 12px;
  }

  .steps-pc::-webkit-scrollbar {
    height: 6px;
  }

  .steps-pc::-webkit-scrollbar-track {
    background: #e8dff5;
    border-radius: 99px;
  }

  .steps-pc::-webkit-scrollbar-thumb {
    background: #7e3aaf;
    border-radius: 99px;
  }

  /* SP: slider */
  .steps-sp {
    display: none;
  }

  .steps-dots {
    display: none;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
  }

  .steps-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #d8b4fe;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: background 0.2s;
  }

  .steps-dot.active {
    background: #7e3aaf;
  }

  .app-install-cta {
    display: flex;
    justify-content: center;
    margin-top: 28px;
  }

  .app-install-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border: 2px solid #7e3aaf;
    border-radius: 50px;
    color: #7e3aaf;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
  }

  .app-install-link:hover {
    background: #7e3aaf;
    color: #fff;
  }

  .app-install-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    flex-shrink: 0;
  }

  @media (max-width: 768px) {
    .steps-pc {
      display: none;
    }

    .steps-sp {
      display: block;
      overflow-x: auto;
      overflow-y: hidden;
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: thin;
      scrollbar-color: #7e3aaf #e8dff5;
      padding-bottom: 12px;
    }

    .steps-sp::-webkit-scrollbar {
      height: 6px;
    }

    .steps-sp::-webkit-scrollbar-track {
      background: #e8dff5;
      border-radius: 99px;
    }

    .steps-sp::-webkit-scrollbar-thumb {
      background: #7e3aaf;
      border-radius: 99px;
    }

    .steps-sp .steps-track {
      display: flex;
      align-items: stretch;
      gap: 16px;
    }

    .steps-sp .step-card {
      flex: 0 0 80vw;
      width: 80vw;
      scroll-snap-align: start;
    }

    .steps-sp .step-arrow {
      display: none;
    }

    .steps-dots {
      display: none;
    }
  }

  /* =============================================
 FEATURE CARDS (Tab 1)
 ============================================= */
  .feature-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.07);
    overflow: hidden;
  }

  .feature-card .placeholder-wrapper {
    border-radius: 0;
    border: none;
    border-bottom: 2px dashed #c8bedb;
  }

  .feature-card-body {
    padding: 20px 22px 24px;
  }

  .feature-status {
    display: inline-block;
    font-size: 0.78rem;
    color: #2e7d32;
    font-weight: 600;
    margin-bottom: 6px;
  }

  .feature-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
  }

  .feature-card p {
    font-size: 0.875rem;
    color: #555;
  }

  /* =============================================
 CAMPUS CARDS (Tab 1 – horizontal scroll)
 ============================================= */
  .campus-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 12px;
    margin-top: 32px;
    scrollbar-width: thin;
    scrollbar-color: #7e3aaf #e8dff5;
  }

  .campus-scroll::-webkit-scrollbar {
    height: 6px;
  }

  .campus-scroll::-webkit-scrollbar-track {
    background: #e8dff5;
    border-radius: 99px;
  }

  .campus-scroll::-webkit-scrollbar-thumb {
    background: #7e3aaf;
    border-radius: 99px;
  }

  .campus-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.07);
    overflow: hidden;
    flex: 0 0 520px;
    width: 520px;
    display: flex;
    flex-direction: column;
  }

  .campus-card-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
    background: #f7f3fc;
  }

  .campus-card-body {
    padding: 20px 22px 24px;
    flex: 1;
  }

  .campus-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    line-height: 1.55;
    margin-bottom: 10px;
  }

  .campus-card p {
    font-size: 0.875rem;
    color: #555;
    line-height: 1.85;
  }

  /* =============================================
 STATS (Tab 1)
 ============================================= */
  .stats-row {
    display: flex;
    justify-content: center;
    gap: 56px;
    flex-wrap: wrap;
    margin: 48px 0 36px;
  }

  .stat {
    text-align: center;
  }

  .stat-number {
    font-size: 2.6rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
  }

  .stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 6px;
  }

  .stat-divider {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.3);
    align-self: center;
  }

  .awards-row {
    display: flex;
    flex-direction: column;
    gap: 32px;
    align-items: center;
    margin-top: 32px;
  }

  .award-badge {
    display: flex;
    align-items: center;
    gap: 28px;
    max-width: 640px;
    width: 100%;
  }

  .award-badge img {
    width: 200px;
    height: auto;
    object-fit: contain;
    flex-shrink: 0;
    border-radius: 12px;
  }

  .award-badge-text {
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.6;
  }

  /* =============================================
 PROBLEM / SOLUTION ROWS (Tab 2 & 3)
 ============================================= */
  .ps-table {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 48px;
  }

  .ps-row {
    display: grid;
    grid-template-columns: 2fr 3fr;
    border-radius: 16px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.08);
    overflow: hidden;
    border-left: 4px solid #f48a8a;
  }

  .ps-cell {
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
  }

  .ps-cell:first-child {
    background: #fff8f8;
    border-right: 2px solid #fff;
  }

  .ps-cell+.ps-cell {
    background: #f7f2ff;
  }

  .ps-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 6px;
    letter-spacing: 0.04em;
    align-self: flex-start;
  }

  .ps-label-problem {
    background: #ffcdd2;
    color: #b71c1c;
  }

  .ps-label-solution {
    background: #e8d5ff;
    color: #6a0dad;
  }

  .ps-cell p {
    font-size: 0.95rem;
    font-weight: 600;
    color: #222;
    line-height: 1.6;
    margin: 0;
  }

  .ps-solution-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    margin-top: 16px;
    display: block;
  }

  /* =============================================
 USE SCENE CARDS (Tab 2 & 3)
 ============================================= */
  .scene-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.07);
    overflow: hidden;
  }

  .scene-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
  }

  .scene-card-body {
    padding: 20px 22px 24px;
  }

  .scene-icon {
    font-size: 1.5rem;
    margin-bottom: 10px;
  }

  .scene-card h3 {
    font-size: 0.975rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
  }

  .scene-card p {
    font-size: 0.875rem;
    color: #555;
    line-height: 1.85;
  }

  .scene-dash {
    color: #aaa;
  }

  /* =============================================
 CASE STUDY CARDS (Tab 2 & 3)
 ============================================= */
  .case-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.07);
    overflow: hidden;
  }

  .case-card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
  }

  .case-card-img-logo {
    object-fit: contain;
    background: #ffffff;
    padding: 20px;
    height: 180px;
  }

  .case-card-header {
    background: var(--primary);
    color: #fff;
    padding: 15px 22px;
    font-size: 0.95rem;
    font-weight: 600;
  }

  .case-card-body {
    padding: 22px;
    font-size: 0.875rem;
    color: #555;
    line-height: 1.95;
  }

  .case-card-link {
    display: inline-block;
    margin-top: 14px;
    color: var(--secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
  }

  .case-card-link:hover {
    text-decoration: underline;
  }

  .case-card--featured {
    display: flex;
    align-items: stretch;
    max-width: 760px;
    margin: 0 auto;
  }

  .case-card-logo-panel {
    flex: 0 0 220px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    border-right: 1px solid rgba(33, 0, 64, 0.08);
  }

  .case-card-featured-logo {
    width: 100%;
    max-width: 160px;
    height: auto;
    object-fit: contain;
  }

  .case-card-body--featured {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
  }

  .case-card-badge {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 4px;
    letter-spacing: 0.02em;
    align-self: flex-start;
  }

  .case-card-link--featured {
    border: 1.5px solid var(--secondary);
    border-radius: 6px;
    padding: 8px 16px;
    align-self: flex-start;
    transition: background 0.18s, color 0.18s;
  }

  .case-card-link--featured:hover {
    background: var(--secondary);
    color: #fff;
    text-decoration: none;
  }

  @media (max-width: 768px) {
    .case-card--featured {
      flex-direction: column;
    }

    .case-card-logo-panel {
      flex: none;
      padding: 24px;
      border-right: none;
      border-bottom: 1px solid rgba(33, 0, 64, 0.08);
    }
  }

  /* =============================================
 USER VOICE CARDS (Tab 2)
 ============================================= */
  .voice-card {
    background: #fff;
    border-radius: 12px;
    padding: 28px 28px 28px 24px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.07);
    border-left: 5px solid var(--secondary);
  }

  .voice-attr {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 6px;
  }

  .voice-title {
    font-size: 1.0rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    line-height: 1.5;
  }

  .voice-text {
    font-size: 0.875rem;
    color: #555;
    line-height: 1.95;
  }

  /* =============================================
 CONTACT SECTION
 ============================================= */
  #contact {
    background: #f7f3fc;
    padding: 72px 0;
  }

  #contact .section-title {
    margin-bottom: 40px;
  }

  /* =============================================
 FOOTER
 ============================================= */
  footer {
    background: var(--primary);
    color: rgba(255, 255, 255, 0.75);
    padding: 44px 0;
    font-size: 0.875rem;
  }

  .footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
  }

  .footer-info {
    margin-bottom: 20px;
    line-height: 2.2;
  }

  .footer-info strong {
    color: rgba(255, 255, 255, 0.55);
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 4px;
  }

  .footer-links {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    margin-bottom: 22px;
  }

  .footer-links a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
  }

  .footer-links a:hover {
    color: #fff;
  }

  .footer-copy {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8rem;
  }

  /* =============================================
 FIXED CTA BAR
 ============================================= */
  #fixed-cta-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--primary);
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    min-height: var(--bar-h);
  }

  .fixed-cta-inner {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
  }

  /* =============================================
 HERO TAB 1 – 3-column redesign
 ============================================= */
  .hero-t1 {
    background: #ffffff;
    position: relative;
    overflow: hidden;
    min-height: 640px;
    padding-top: var(--header-h);
    display: flex;
    align-items: stretch;
  }

  .hero-t1::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 75%;
    height: 130%;
    background: radial-gradient(ellipse at 75% 50%, #f3e8ff 0%, rgba(243, 232, 255, 0.5) 35%, transparent 68%);
    pointer-events: none;
    z-index: 0;
  }

  .hero-t1-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: stretch;
    width: 100%;
    position: relative;
    z-index: 1;
  }

  /* Left: woman — 35% */
  .hero-t1-left {
    flex: 0 0 35%;
    width: 35%;
    display: flex;
    align-items: flex-end;
    overflow: visible;
  }

  .hero-t1-woman {
    width: 100%;
    height: auto;
    max-height: none;
    object-fit: contain;
    object-position: bottom center;
    display: block;
  }

  /* Center: text — 26% */
  .hero-t1-center {
    flex: 0 0 26%;
    width: 26%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 12px 40px 8px;
  }

  .hero-t1-logo {
    width: 148px;
    height: auto;
    max-width: 100%;
    display: block;
    margin-bottom: 20px;
  }

  .hero-t1-title {
    font-size: clamp(16px, 1.55vw, 24px);
    font-weight: 700;
    color: #210040;
    line-height: 1.65;
    margin-bottom: 16px;
    word-break: keep-all;
  }

  .hero-t1-highlight {
    color: #7e3aaf;
  }

  .hero-t1-sub {
    font-size: clamp(11px, 0.85vw, 13px);
    color: #555555;
    line-height: 1.8;
    margin-bottom: 28px;
  }

  .hero-t1-btns {
    justify-content: flex-start;
    gap: 10px;
  }

  .hero-t1-btns .btn {
    padding: 11px 20px;
    font-size: 0.85rem;
    flex: 1;
    text-align: center;
  }

  .hero-t1-btn-outline {
    display: inline-block;
    border: 2px solid #7e3aaf;
    color: #7e3aaf;
    background: transparent;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 9px 18px;
    flex: 1;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s, transform 0.15s;
  }

  .hero-t1-btn-outline:hover {
    background: #f3e8ff;
    transform: translateY(-2px);
  }

  /* Right: device — 39% */
  .hero-t1-right {
    flex: 0 0 39%;
    width: 39%;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    overflow: visible;
    padding: 0;
  }

  .hero-t1-device {
    width: 120%;
    height: auto;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 20px 56px rgba(33, 0, 64, 0.32));
    transform: translateY(0);
  }

  @media (max-width: 767px) {
    .hero-t1 {
      min-height: auto;
    }

    .hero-t1-inner {
      flex-direction: column;
      align-items: center;
      padding: 24px 1.5rem 0;
    }

    .hero-t1-left {
      order: 2;
      flex: none;
      width: 78%;
      max-width: 320px;
      padding-top: 0;
      margin-top: 16px;
      justify-content: center;
    }

    .hero-t1-woman {
      max-height: 300px;
    }

    .hero-t1-center {
      order: 1;
      flex: none;
      width: 100%;
      padding: 20px 0 0;
      align-items: flex-start;
      text-align: left;
    }

    .hero-t1-title {
      font-size: 22px;
    }

    .hero-t1-sub {
      font-size: 13px;
      margin-bottom: 16px;
    }

    .hero-t1-right {
      display: none;
    }

    .hero-t1-btns {
      flex-direction: column;
      align-items: stretch;
    }

    .hero-t1-btns .btn,
    .hero-t1-btns .hero-t1-btn-outline {
      flex: none;
      width: 100%;
      text-align: center;
    }
  }

  /* =============================================
 HERO TAB 2 – Full-bleed image overlay
 ============================================= */
  .hero-t2 {
    position: relative;
    min-height: 640px;
    padding-top: var(--header-h);
    display: flex;
    align-items: center;
    background-image: url('/business/images/classroom-conv-2026-y-4-m-21-d-12-h-24-min.webp');
    background-size: cover;
    background-position: 20% 30%;
    overflow: hidden;
  }

  .hero-t2::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right,
        rgba(33, 0, 64, 0.90) 0%,
        rgba(33, 0, 64, 0.72) 38%,
        rgba(33, 0, 64, 0.28) 65%,
        rgba(33, 0, 64, 0.04) 100%);
    z-index: 0;
  }

  .hero-t2-inner {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
    padding: 60px 2rem;
    width: 100%;
  }

  .hero-t2-content {
    max-width: 540px;
  }

  .hero-t2-logo {
    width: 148px;
    height: auto;
    display: block;
    margin-bottom: 28px;
    filter: brightness(0) invert(1);
  }

  .hero-t2 h1 {
    font-size: clamp(22px, 2.6vw, 38px);
    font-weight: 700;
    color: #ffffff;
    line-height: 1.5;
    margin-bottom: 20px;
  }

  .hero-t2 p {
    font-size: clamp(13px, 1vw, 15px);
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.85;
    margin-bottom: 36px;
  }

  .hero-t2 .btn-group {
    justify-content: flex-start;
  }

  /* Tab 2: テキスト・グラデーションを右側に */
  .hero-t2--right::before {
    background: linear-gradient(to left,
        rgba(33, 0, 64, 0.90) 0%,
        rgba(33, 0, 64, 0.72) 38%,
        rgba(33, 0, 64, 0.28) 65%,
        rgba(33, 0, 64, 0.04) 100%);
  }

  .hero-t2--right .hero-t2-inner {
    display: flex;
    justify-content: flex-end;
  }

  @media (max-width: 767px) {
    .hero-t2--right .hero-t2-inner {
      justify-content: flex-start;
    }
  }

  /* Tab 3: 背景画像のみ上書き */
  .hero-t3 {
    background-image: url('/business/images/classroom-conv-2026-y-4-m-21-d-12-h-31-min-48-s.webp');
    background-position: center 40%;
  }

  html[lang="vi"] .hero-t2 {
    background-image: url('/business/images/bg-school-2.webp');
  }

  html[lang="vi"] .hero-t3 {
    background-image: url('/business/images/bg-business.webp');
  }

  @media (max-width: 767px) {
    .hero-t2 {
      min-height: auto;
      background-position: left 30%;
    }

    .hero-t3 {
      background-position: left 40%;
    }

    .hero-t2::before {
      background: linear-gradient(to bottom,
          rgba(33, 0, 64, 0.88) 0%,
          rgba(33, 0, 64, 0.65) 70%,
          rgba(33, 0, 64, 0.45) 100%);
    }

    .hero-t2-inner {
      padding: 40px 1.5rem 48px;
    }

    .hero-t2-content {
      max-width: 100%;
    }

    .hero-t2 h1 {
      font-size: 22px;
    }
  }

  /* =============================================
 FADE-IN ANIMATION
 ============================================= */
  .fade-in {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.65s ease, transform 0.65s ease;
  }

  .fade-in.visible {
    opacity: 1;
    transform: none;
  }

  /* Stagger via nth-child within grids */
  .grid>.fade-in:nth-child(2) {
    transition-delay: 0.09s;
  }

  .grid>.fade-in:nth-child(3) {
    transition-delay: 0.18s;
  }

  .grid>.fade-in:nth-child(4) {
    transition-delay: 0.27s;
  }

  .ps-row.fade-in:nth-child(2) {
    transition-delay: 0.1s;
  }

  .ps-row.fade-in:nth-child(3) {
    transition-delay: 0.2s;
  }

  /* =============================================
 AEON BANNER
 ============================================= */
  .aeon-banner {
    background: #f3eeff;
    border-top: 1px solid #e0d5f0;
    border-bottom: 1px solid #e0d5f0;
    padding: 14px 0;
  }

  .aeon-banner-inner {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
  }

  .aeon-banner-label {
    flex-shrink: 0;
    background: #7e3aaf;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    white-space: nowrap;
  }

  .aeon-banner img {
    height: 36px;
    width: auto;
    flex-shrink: 0;
  }

  .aeon-banner-text {
    flex: 1;
    font-size: 0.82rem;
    color: #444;
    line-height: 1.6;
    min-width: 0;
  }

  .aeon-banner-link {
    flex-shrink: 0;
    font-size: 0.82rem;
    font-weight: 600;
    color: #7e3aaf;
    text-decoration: none;
    white-space: nowrap;
  }

  .aeon-banner-link:hover {
    text-decoration: underline;
  }

  html[lang="vi"] * {
    font-family: 'Be Vietnam Pro', sans-serif;
  }

  html[lang="vi"] .aeon-banner,
  html[lang="vi"] .aeon-section,
  html[lang="zh-TW"] .aeon-banner,
  html[lang="zh-TW"] .aeon-section,
  html[lang="en"] .aeon-banner,
  html[lang="en"] .aeon-section {
    display: none;
  }

  html[lang="en"] .hs-form-default { display: none; }
  html[lang="zh-TW"] .hs-form-default { display: none; }
  html:not([lang="en"]) .hs-form-en { display: none; }
  html[lang="vi"] .hs-form-default { display: none; }
  html:not([lang="vi"]) .hs-form-vi { display: none; }
  html:not([lang="zh-TW"]) .hs-form-zh-TW { display: none; }

  @media (max-width: 768px) {
    .aeon-banner-text {
      font-size: 0.78rem;
    }

    .aeon-banner-link {
      width: 100%;
    }
  }

  /* =============================================
 REVIEWS CAROUSEL (Tab 1)
 ============================================= */
  .reviews-section {
    background: #f8f4ff;
  }

  .reviews-carousel-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
  }

  .reviews-carousel {
    overflow: hidden;
    flex: 1;
    min-width: 0;
  }

  .reviews-track {
    display: flex;
    gap: 20px;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    align-items: stretch;
  }

  .review-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 16px rgba(33, 0, 64, 0.08);
    padding: 28px 24px 24px;
    flex: 0 0 300px;
    width: 300px;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
  }

  .review-quote {
    font-size: 2.2rem;
    line-height: 1;
    color: #7e3aaf;
    margin-bottom: 12px;
    font-family: Georgia, serif;
  }

  .review-text {
    font-size: 14px;
    line-height: 1.8;
    color: #444;
    flex: 1;
    margin-bottom: 16px;
  }

  .review-author {
    font-size: 0.875rem;
    font-weight: 700;
    color: #210040;
    text-align: right;
  }

  .carousel-btn {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #7e3aaf;
    background: #fff;
    color: #7e3aaf;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
  }

  .carousel-btn:hover {
    background: #7e3aaf;
    color: #fff;
  }

  .carousel-btn:disabled {
    opacity: 0.3;
    cursor: default;
  }

  .carousel-btn:disabled:hover {
    background: #fff;
    color: #7e3aaf;
  }

  .carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
  }

  .carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #d8b4fe;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: background 0.2s;
  }

  .carousel-dot.active {
    background: #7e3aaf;
  }

  /* =============================================
 RESPONSIVE – TABLET (≤1024px)
 ============================================= */
  @media (max-width: 1024px) {
    .grid-3 {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  /* =============================================
 RESPONSIVE – SP (≤768px)
 ============================================= */
  @media (max-width: 768px) {
    :root {
      --bar-h: 70px;
      --header-h: 88px;
    }

    #site-header {
      height: auto;
    }

    .header-inner {
      flex-direction: column;
      align-items: stretch;
      padding: 0;
      gap: 0;
    }

    .header-logo {
      height: 44px;
      padding: 0 1.25rem;
      display: flex;
      align-items: center;
    }

    .tab-nav {
      flex: none;
      width: 100%;
      height: 44px;
      overflow-x: visible;
      border-top: 1px solid #ede6f8;
    }

    .tab-scroll-inner {
      width: 100%;
      min-width: unset;
      white-space: normal;
    }

    .tab-btn {
      flex: 1;
      height: 44px;
      font-size: 0.72rem;
      padding: 0 4px;
      white-space: normal;
      line-height: 1.3;
      word-break: keep-all;
    }

    .header-cta {
      display: none;
    }

    .grid-3,
    .grid-2 {
      grid-template-columns: 1fr;
    }

    .hero {
      padding: 60px 0 56px;
    }

    .section {
      padding: 56px 0;
    }

    .stats-row {
      gap: 28px;
    }

    .stat-number {
      font-size: 2.0rem;
    }

    .stat-divider {
      display: none;
    }

    .ps-row {
      grid-template-columns: 1fr;
    }

    .ps-cell:first-child {
      border-right: none;
      border-bottom: 2px solid #fff;
    }

    .ps-cell {
      padding: 14px 18px;
    }

    .ps-solution-img {
      max-width: 480px;
      margin-left: auto;
      margin-right: auto;
    }

    .tab-btn {
      padding: 0 1rem;
      font-size: 0.83rem;
    }

    .fixed-cta-inner .btn {
      padding: 10px 18px;
      font-size: 0.85rem;
    }

    .award-badge {
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .award-badge img {
      width: 160px;
    }

    .lang-btn {
      padding: 5px 9px;
      font-size: 0.78rem;
    }

    .review-card {
      flex: 0 0 calc(100vw - 144px);
      width: calc(100vw - 144px);
    }

    .carousel-btn {
      width: 34px;
      height: 34px;
      font-size: 1.1rem;
    }

    .step-img-wrapper {
      height: 220px;
    }

    .campus-card {
      flex: 0 0 80vw;
      width: 80vw;
    }

    #campusHintWrap::after {
      display: none;
    }

    .aeon-banner-text {
      flex: 0 0 100%;
      font-size: 0.78rem;
    }

    .section-title-gap {
      margin-bottom: 32px;
    }

    .section-cta {
      padding: 40px 0;
    }

    #contact {
      padding: 48px 0;
    }
  }

  @media (max-width: 380px) {
    .fixed-cta-inner {
      gap: 6px;
    }
    .fixed-cta-inner .btn {
      padding: 9px 10px;
      font-size: 0.72rem;
    }
  }