*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --blue: #156fc6;
      --blue-dark: #0c447c;
      --blue-light: #e6f1fb;
      --orange: #ff6e35;
      --orange-soft: #ff9c96;
      --sand: #f6f1eb;
      --gray-50: #f9fafb;
      --gray-100: #f3f4f6;
      --gray-200: #e5e7eb;
      --gray-600: #6b7280;
      --gray-800: #1f2937;
      --gray-900: #111827;
      --radius: 12px;
      --radius-lg: 18px;
    }

    body {
      font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
      color: var(--gray-900);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      min-height: 100vh;
      background:
        radial-gradient(1000px 500px at -10% -8%, #deebf8 0%, transparent 58%),
        radial-gradient(900px 500px at 110% -12%, #ffe4d7 0%, transparent 56%),
        linear-gradient(180deg, var(--sand) 0%, #fff 42%);
    }

    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: #fff;
      border-bottom: 1px solid #ececec;
    }
    .header-inner {
      max-width: none;
      margin: 0;
      padding: 0 0 0 26px;
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 18px;
      flex-shrink: 0;
    }

    .container {
      max-width: 1000px;
      margin: 0 auto;
      padding: 30px 24px 64px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      text-decoration: none;
      line-height: 0;
      flex-shrink: 0;
    }

    .logo img {
      display: block;
      width: clamp(150px, 14vw, 176px);
      height: auto;
    }
    .logo-tag {
      font-size: 16px;
      line-height: 1.35;
      color: #222;
      font-weight: 500;
      white-space: nowrap;
    }
    .nav {
      display: flex;
      align-items: center;
      gap: 4px;
      flex-wrap: wrap;
    }
    .nav a {
      position: relative;
      font-size: 16px;
      font-weight: 600;
      color: var(--gray-800);
      text-decoration: none;
      padding: 6px 12px;
      border-radius: 6px;
      transition: color 0.15s, background 0.15s;
    }
    .nav a::after {
      content: "";
      position: absolute;
      left: 12px;
      right: 12px;
      bottom: 2px;
      height: 2px;
      border-radius: 2px;
      background: var(--blue);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.2s ease;
    }
    .nav a:not(.nav-cta):hover {
      color: var(--blue);
      background: var(--blue-light);
    }
    .nav a:not(.nav-cta):hover::after {
      transform: scaleX(1);
    }
    .nav .nav-cta::after {
      display: none;
    }
    .header-cta {
      min-width: 240px;
      min-height: 76px;
      padding: 0 24px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 700;
      line-height: 1;
      text-decoration: none;
      color: #fff;
      border-radius: 0 0 0 18px;
      background: linear-gradient(135deg, #ff6e35 0%, #ff9c96 100%);
      transition: background 0.2s ease;
      flex-shrink: 0;
    }
    .header-cta:hover {
      background: linear-gradient(135deg, #ff7440 0%, #ffa59e 100%);
    }
    .nav-cta {
      display: none;
    }
    .nav-header {
      display: none;
    }
    .nav-links {
      display: contents;
    }
    .nav-close {
      display: none;
    }
    .nav-toggle {
      display: none;
      width: 52px;
      height: 52px;
      padding: 0;
      background: #fff;
      border: 1.5px solid var(--gray-200);
      border-radius: 10px;
      cursor: pointer;
      position: relative;
      flex-shrink: 0;
      margin-right: 10px;
      box-shadow: 0 2px 8px rgba(12, 68, 124, 0.08);
      transition: background 0.15s, border-color 0.15s;
    }
    .nav-toggle:hover {
      background: var(--blue-light);
      border-color: var(--blue);
    }
    .nav-toggle span,
    .nav-toggle::before,
    .nav-toggle::after {
      content: "";
      position: absolute;
      left: 13px;
      right: 13px;
      height: 2px;
      background: var(--blue-dark);
      border-radius: 2px;
      transition: transform 0.22s ease, opacity 0.18s ease, top 0.22s ease, bottom 0.22s ease;
    }
    .nav-toggle::before {
      top: 15px;
    }
    .nav-toggle span {
      top: 24px;
    }
    .nav-toggle::after {
      bottom: 15px;
    }
    .nav-toggle[aria-expanded="true"]::before {
      top: 24px;
      transform: rotate(45deg);
    }
    .nav-toggle[aria-expanded="true"] span {
      opacity: 0;
    }
    .nav-toggle[aria-expanded="true"]::after {
      bottom: 24px;
      transform: rotate(-45deg);
    }
    .nav-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(12, 68, 124, 0.3);
      backdrop-filter: blur(2px);
      z-index: 90;
    }
    .nav-backdrop.is-open {
      display: block;
    }

    .card {
      background: #fff;
      border: 1px solid rgba(12, 68, 124, 0.1);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 18px 36px rgba(12, 68, 124, 0.08);
    }

    h1 {
      font-size: clamp(29px, 3.3vw, 42px);
      line-height: 1.28;
      margin-bottom: 8px;
      letter-spacing: -0.01em;
      color: #111;
    }

    .meta {
      color: var(--gray-600);
      font-size: 13px;
      margin-bottom: 24px;
    }

    h2 {
      font-size: 20px;
      line-height: 1.4;
      margin: 28px 0 10px;
      padding-top: 8px;
      border-top: 1px solid rgba(21, 111, 198, 0.14);
      color: #0f4e90;
    }

    p {
      font-size: 14px;
      color: var(--gray-800);
      margin-bottom: 9px;
    }

    ul {
      margin: 0 0 12px 1.2em;
      color: var(--gray-800);
      font-size: 14px;
    }

    li { margin-bottom: 5px; }

    a {
      color: var(--blue);
      text-decoration: none;
    }

    a:hover { text-decoration: underline; }

    .contact {
      margin-top: 28px;
      padding: 15px;
      background: linear-gradient(180deg, #f9fbff 0%, #fff 100%);
      border: 1px solid rgba(21, 111, 198, 0.16);
      border-radius: 12px;
      font-size: 14px;
    }

    .footer {
      background: #1a1a1a;
      padding: 56px 24px 40px;
      text-align: center;
    }
    .footer-logo {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 10px;
    }
    .footer-logo img {
      display: block;
      width: clamp(164px, 18vw, 196px);
      height: auto;
    }
    .footer-tagline {
      font-size: 16px;
      color: #888;
      margin-bottom: 28px;
    }
    .footer-links {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 28px;
      margin-bottom: 28px;
    }
    .footer-links a {
      font-size: 16px;
      color: #888;
      text-decoration: none;
      transition: color 0.15s;
    }
    .footer-links a:hover {
      color: #5ba3e0;
    }
    .footer-copy {
      font-size: 16px;
      color: #555;
    }

    @media (max-width: 1200px) {
      .header-inner {
        padding-left: 16px;
      }
      .logo-tag {
        display: none;
      }
      .header-cta {
        min-width: 236px;
        min-height: 76px;
        font-size: 22px;
      }
    }
    @media (max-width: 1024px) {
      .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .header-cta {
        display: none;
      }
      .nav {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: min(320px, 88vw);
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0;
        box-shadow: -8px 0 40px rgba(12, 68, 124, 0.14);
        transform: translateX(100%);
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 95;
        overflow-y: auto;
      }
      .nav.is-open {
        transform: translateX(0);
      }
      .nav-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 20px;
        height: 68px;
        background: var(--blue-dark);
        flex-shrink: 0;
      }
      .nav-header-label {
        font-size: 16px;
        font-weight: 800;
        letter-spacing: 0.22em;
        color: rgba(255, 255, 255, 0.7);
      }
      .nav-close {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: rgba(255, 255, 255, 0.12);
        border: 1.5px solid rgba(255, 255, 255, 0.2);
        border-radius: 8px;
        cursor: pointer;
        color: #fff;
        flex-shrink: 0;
        transition: background 0.15s;
      }
      .nav-close:hover {
        background: rgba(255, 255, 255, 0.22);
      }
      .nav-close svg {
        width: 16px;
        height: 16px;
      }
      .nav-links {
        display: flex;
        flex-direction: column;
        padding: 12px 0;
        flex: 1;
      }
      .nav-links a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 15px 24px;
        font-size: 16px;
        font-weight: 600;
        color: var(--gray-800);
        border-bottom: 1px solid var(--gray-100);
        text-decoration: none;
        transition: background 0.12s, color 0.12s;
      }
      .nav-links a:hover {
        background: var(--blue-light);
        color: var(--blue);
      }
      .nav .nav-cta {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        margin: 20px 20px 32px;
        padding: 16px 20px;
        font-size: 16px;
        font-weight: 700;
        color: #fff;
        background: linear-gradient(135deg, #ff6e35 0%, #ff9c96 100%);
        border-radius: 12px;
        border: 0;
        box-shadow: 0 6px 18px rgba(255, 110, 53, 0.28);
        text-decoration: none;
        transition: background 0.15s, box-shadow 0.15s;
      }
      .nav .nav-cta::after {
        content: "→";
        font-size: 16px;
      }
      .nav .nav-cta:hover {
        background: linear-gradient(135deg, #ff7440 0%, #ffa59e 100%);
        box-shadow: 0 8px 22px rgba(255, 110, 53, 0.35);
      }
      .header-inner {
        padding-left: 12px;
        min-height: 68px;
      }
      .brand-wrap {
        gap: 10px;
      }
      .logo img {
        width: 160px;
      }
    }
    @media (max-width: 768px) {
      .container { padding: 20px 16px 42px; }
      .card { padding: 22px 20px; }
      h2 { font-size: 18px; }
      .logo img {
        width: 150px;
      }
    }
    @media (max-width: 480px) {
      .header-inner {
        min-height: 62px;
        padding-left: 8px;
      }
      .brand-wrap {
        gap: 6px;
      }
      .logo img {
        width: 142px;
      }
    }