:root {
      --aci-navy:   #0d1b2a;
      --aci-dark:   #132135;
      --aci-blue:   #1a6ef5;
      --aci-teal:   #0ea5e9;
      --aci-light:  #f4f7fb;
      --aci-muted:  #64748b;
      --aci-white:  #ffffff;
    }

    * { scroll-behavior: smooth; }

    body {
      font-family: 'Inter', sans-serif;
      background: var(--aci-white);
      color: #1e293b;
    }

    /* ── NAVBAR ───────────────────────────── */
    .navbar {
      background: var(--aci-navy);
      padding: 1rem 0;
      transition: box-shadow .3s;
    }
    .navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.4); }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--aci-white) !important;
      letter-spacing: -.5px;
      display: flex;
      align-items: center;
      gap: .5rem;
    }
    .navbar-brand .brand-accent { color: var(--aci-teal); }
    .navbar-symbol {
      height: 1.5rem;
      width: auto;      
      opacity: .9;
    }
    .navbar-nav .nav-link {
      color: rgba(255,255,255,.8) !important;
      font-weight: 500;
      font-size: .925rem;
      padding: .5rem 1rem !important;
      transition: color .2s;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active { color: var(--aci-teal) !important; }
    .nav-cta {
      background: var(--aci-blue);
      color: var(--aci-white) !important;
      border-radius: 6px;
      padding: .45rem 1.2rem !important;
      transition: background .2s !important;
    }
    .nav-cta:hover { background: #1558cc !important; color: var(--aci-white) !important; }

    /* ── NAV DROPDOWN ─────────────────────── */
    .navbar .dropdown-menu {
      background: var(--aci-dark);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 10px;
      padding: .5rem;
      margin-top: .5rem;
      min-width: 210px;
      box-shadow: 0 8px 32px rgba(0,0,0,.35);
    }
    .navbar .dropdown-item {
      color: rgba(255,255,255,.75);
      font-size: .9rem;
      font-weight: 500;
      border-radius: 6px;
      padding: .5rem .85rem;
      transition: background .15s, color .15s;
    }
    .navbar .dropdown-item:hover,
    .navbar .dropdown-item:focus {
      background: rgba(255,255,255,.08);
      color: var(--aci-teal);
    }
    .navbar .dropdown-divider { border-color: rgba(255,255,255,.1); margin: .35rem .5rem; }
    .navbar .dropdown-toggle::after { vertical-align: .15em; }

    /* ── HERO ─────────────────────────────── */
    #home {
      background: linear-gradient(135deg, var(--aci-navy) 0%, #0f2d4a 60%, #0d3d6e 100%);
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    #home::before {
      content: '';
      position: absolute;
      inset: 0;
      background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    }
    .hero-badge {
      display: inline-block;
      background: rgba(14,165,233,.15);
      border: 1px solid rgba(14,165,233,.35);
      color: var(--aci-teal);
      font-size: .8rem;
      font-weight: 600;
      letter-spacing: .08em;
      text-transform: uppercase;
      padding: .35rem .9rem;
      border-radius: 100px;
      margin-bottom: 1.5rem;
    }
    .hero-title-wrap {
      display: flex;
      align-items: center;
      gap: 1.1rem;
      margin-bottom: 1.25rem;
    }
    .hero-symbol {
      width: clamp(3rem, 6vw, 5rem);
      height: auto;
      flex-shrink: 0;
      filter: brightness(0) invert(1);
      opacity: .92;
    }
    .hero-title {
      font-size: clamp(2.2rem, 5vw, 3.8rem);
      font-weight: 700;
      color: var(--aci-white);
      line-height: 1.15;
      margin-bottom: 0;
    }
    .hero-title .accent { color: var(--aci-teal); }
    .hero-subtitle {
      font-size: 1.15rem;
      color: rgba(255,255,255,.7);
      max-width: 540px;
      line-height: 1.75;
      margin-bottom: 2.25rem;
    }
    .btn-primary-aci {
      background: var(--aci-blue);
      color: #fff;
      border: none;
      border-radius: 8px;
      padding: .75rem 1.8rem;
      font-weight: 600;
      font-size: .95rem;
      transition: background .2s, transform .15s;
    }
    .btn-primary-aci:hover { background: #1558cc; transform: translateY(-1px); color: #fff; }
    .btn-outline-aci {
      background: transparent;
      color: var(--aci-white);
      border: 2px solid rgba(255,255,255,.3);
      border-radius: 8px;
      padding: .73rem 1.8rem;
      font-weight: 600;
      font-size: .95rem;
      transition: border-color .2s, background .2s, transform .15s;
    }
    .btn-outline-aci:hover {
      border-color: var(--aci-teal);
      color: var(--aci-teal);
      background: rgba(14,165,233,.08);
      transform: translateY(-1px);
    }
    .hero-stats {
      display: flex;
      gap: 2.5rem;
      margin-top: 3rem;
      padding-top: 2rem;
      border-top: 1px solid rgba(255,255,255,.12);
    }
    .hero-stat-value {
      font-size: 1.9rem;
      font-weight: 700;
      color: var(--aci-white);
      line-height: 1;
    }
    .hero-stat-label {
      font-size: .8rem;
      color: rgba(255,255,255,.5);
      margin-top: .25rem;
      text-transform: uppercase;
      letter-spacing: .06em;
    }
    .hero-graphic {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .hero-card-mockup {
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 16px;
      padding: 2rem;
      backdrop-filter: blur(10px);
      max-width: 340px;
      width: 100%;
    }
    .mockup-bar {
      height: 8px;
      border-radius: 100px;
      margin-bottom: .6rem;
    }
    .mockup-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 1.25rem;
    }

    /* ── SECTION SHARED ───────────────────── */
    section { padding: 100px 0; }
    .section-label {
      font-size: .8rem;
      font-weight: 700;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: var(--aci-blue);
      margin-bottom: .5rem;
    }
    .section-title {
      font-size: clamp(1.8rem, 3.5vw, 2.6rem);
      font-weight: 700;
      color: var(--aci-navy);
      line-height: 1.2;
      margin-bottom: 1rem;
    }
    .section-subtitle {
      color: var(--aci-muted);
      font-size: 1.05rem;
      max-width: 560px;
      line-height: 1.75;
    }
    .divider {
      width: 48px;
      height: 4px;
      background: linear-gradient(90deg, var(--aci-blue), var(--aci-teal));
      border-radius: 100px;
      margin: 1rem 0 2rem;
    }

    /* ── JAPAN EDGE SECTION ──────────────── */
    #edge { background: var(--aci-navy); }
    #edge .section-label { color: var(--aci-teal); }
    #edge .section-title { color: var(--aci-white); }
    #edge .section-subtitle { color: rgba(255,255,255,.6); }
    #edge .divider { background: linear-gradient(90deg, var(--aci-blue), var(--aci-teal)); }
    .edge-card {
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 14px;
      padding: 1.5rem;
      height: 100%;
      transition: background .25s, border-color .25s;
    }
    .edge-card:hover {
      background: rgba(255,255,255,.08);
      border-color: rgba(14,165,233,.3);
    }
    .edge-icon {
      width: 44px;
      height: 44px;
      border-radius: 11px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      margin-bottom: .9rem;
    }
    .edge-card h6 {
      font-weight: 700;
      color: var(--aci-white);
      font-size: .938rem;
      margin-bottom: .35rem;
    }
    .edge-card p {
      color: rgba(255,255,255,.55);
      font-size: .858rem;
      line-height: 1.68;
      margin: 0;
    }

    /* ── SOLUTIONS ────────────────────────── */
    #solutions { background: var(--aci-light); }
    .solution-card {
      background: var(--aci-white);
      border: 1px solid #e2e8f0;
      border-radius: 14px;
      padding: 2.25rem;
      height: 100%;
      transition: box-shadow .25s, transform .25s, border-color .25s;
    }
    .solution-card:hover {
      box-shadow: 0 12px 40px rgba(26,110,245,.1);
      transform: translateY(-4px);
      border-color: rgba(26,110,245,.25);
    }
    .solution-icon {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
    }
    .solution-card h5 {
      font-weight: 700;
      font-size: 1.1rem;
      color: var(--aci-navy);
      margin-bottom: .6rem;
    }
    .solution-card p {
      color: var(--aci-muted);
      font-size: .925rem;
      line-height: 1.7;
      margin: 0;
    }

    /* ── CONSULTING ───────────────────────── */
    #consulting { background: var(--aci-white); }
    .consulting-feature {
      display: flex;
      gap: 1.25rem;
      margin-bottom: 2rem;
    }
    .consulting-feature-icon {
      flex-shrink: 0;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(26,110,245,.1);
      color: var(--aci-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      margin-top: .1rem;
    }
    .consulting-feature h6 {
      font-weight: 700;
      color: var(--aci-navy);
      margin-bottom: .3rem;
    }
    .consulting-feature p {
      color: var(--aci-muted);
      font-size: .9rem;
      line-height: 1.65;
      margin: 0;
    }
    .consulting-visual {
      background: linear-gradient(135deg, var(--aci-navy), #0d3d6e);
      border-radius: 20px;
      padding: 3rem 2.5rem;
      height: 100%;
      min-height: 420px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      position: relative;
      overflow: hidden;
    }
    .consulting-visual::before {
      content: '';
      position: absolute;
      top: -60px; right: -60px;
      width: 220px; height: 220px;
      border-radius: 50%;
      background: rgba(14,165,233,.15);
    }
    .consulting-visual::after {
      content: '';
      position: absolute;
      bottom: -40px; left: -40px;
      width: 180px; height: 180px;
      border-radius: 50%;
      background: rgba(26,110,245,.15);
    }
    .process-step {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      margin-bottom: 1.5rem;
      position: relative;
      z-index: 1;
    }
    .process-step:last-child { margin-bottom: 0; }
    .step-num {
      flex-shrink: 0;
      width: 36px;
      height: 36px;
      background: rgba(14,165,233,.2);
      border: 1px solid rgba(14,165,233,.4);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: .8rem;
      font-weight: 700;
      color: var(--aci-teal);
    }
    .process-step h6 { color: #fff; font-weight: 600; margin-bottom: .2rem; font-size: .95rem; }
    .process-step p { color: rgba(255,255,255,.6); font-size: .85rem; margin: 0; }

    /* ── CONTACT ──────────────────────────── */
    #contact { background: var(--aci-light); }
    .contact-card {
      background: var(--aci-white);
      border-radius: 16px;
      padding: 3rem;
      box-shadow: 0 4px 30px rgba(0,0,0,.06);
    }
    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1.5rem;
    }
    .contact-info-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(26,110,245,.1);
      color: var(--aci-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .contact-info-item h6 { font-weight: 600; margin-bottom: .1rem; font-size: .9rem; color: var(--aci-navy); }
    .contact-info-item p { color: var(--aci-muted); font-size: .875rem; margin: 0; }
    .form-label { font-weight: 500; font-size: .875rem; color: #374151; margin-bottom: .4rem; }
    .form-control, .form-select {
      border: 1.5px solid #e2e8f0;
      border-radius: 8px;
      padding: .65rem 1rem;
      font-size: .925rem;
      transition: border-color .2s, box-shadow .2s;
    }
    .form-control:focus, .form-select:focus {
      border-color: var(--aci-blue);
      box-shadow: 0 0 0 3px rgba(26,110,245,.12);
    }
    .btn-submit {
      background: var(--aci-blue);
      color: #fff;
      border: none;
      border-radius: 8px;
      padding: .75rem 2rem;
      font-weight: 600;
      width: 100%;
      transition: background .2s, transform .15s;
    }
    .btn-submit:hover { background: #1558cc; transform: translateY(-1px); color: #fff; }

    /* ── FOOTER ───────────────────────────── */
    footer {
      background: var(--aci-navy);
      color: rgba(255,255,255,.6);
      padding: 60px 0 30px;
    }
    .footer-brand {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--aci-white);
      margin-bottom: .75rem;
    }
    .footer-brand span { color: var(--aci-teal); }
    .footer-tagline { font-size: .875rem; line-height: 1.6; max-width: 260px; }
    .footer-heading { color: var(--aci-white); font-weight: 600; font-size: .9rem; margin-bottom: 1rem; }
    .footer-links { list-style: none; padding: 0; margin: 0; }
    .footer-links li { margin-bottom: .6rem; }
    .footer-links a {
      color: rgba(255,255,255,.55);
      text-decoration: none;
      font-size: .875rem;
      transition: color .2s;
    }
    .footer-links a:hover { color: var(--aci-teal); }
    .footer-divider { border-color: rgba(255,255,255,.1); margin: 2.5rem 0 1.5rem; }
    .footer-bottom { font-size: .8rem; }
    .social-links a {
      width: 36px; height: 36px;
      border-radius: 8px;
      background: rgba(255,255,255,.08);
      color: rgba(255,255,255,.7);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      transition: background .2s, color .2s;
      font-size: 1rem;
      margin-right: .5rem;
    }
    .social-links a:hover { background: var(--aci-blue); color: #fff; }
    /* ── Language switcher ────────────────────────────────── */
    .lang-switcher {
      display: inline-flex;
      align-items: center;
      gap: .25rem;
      font-size: .8rem;
      font-weight: 500;
      letter-spacing: .02em;
    }
    .lang-switcher a {
      color: rgba(255,255,255,.55);
      text-decoration: none;
      transition: color .15s;
      padding: .1rem .15rem;
    }
    .lang-switcher a:hover,
    .lang-switcher a.active { color: #fff; }
    .lang-switcher a.active { font-weight: 700; }
    .lang-sep { color: rgba(255,255,255,.25); }
    .lang-switcher--footer a { color: rgba(255,255,255,.45); }
    .lang-switcher--footer a:hover,
    .lang-switcher--footer a.active { color: rgba(255,255,255,.85); }