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

  :root {
      --blue: #1A56C4;
      --blue-dark: #1240A0;
      --blue-deeper: #0D2E78;
      --blue-light: #EBF1FC;
      --blue-mid: #3B72D8;
      --sky: #5A8FE8;
      --cream: #F7F9FD;
      --ink: #111827;
      --ink-mid: #374151;
      --ink-light: #6B7280;
      --gold: #E8A020;
      --border: #D4DDEF;
      --white: #FFFFFF;
      --section-pad: 80px 40px;
  }

  html {
      scroll-behavior: smooth;
  }

  body {
      font-family: 'Noto Sans JP', sans-serif;
      background: var(--cream);
      color: var(--ink);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
  }

  /* ===== HEADER NAV ===== */
  nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--white);
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 40px;
      height: 64px;
      box-shadow: 0 1px 12px rgba(26, 86, 196, 0.06);
  }

  .nav-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
  }

  .nav-logo-mark {
      width: 38px;
      height: 38px;
      background: var(--blue);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
  }

  .nav-logo-mark span {
      color: white;
      font-family: 'Noto Serif JP', serif;
      font-weight: 700;
      font-size: 18px;
  }

  .nav-logo-ctr {
      align-items: center;
      display: grid;
      justify-content: center;
      line-height: 1.3;
      margin: 0 auto;
      text-align: center;
  }

  .nav-logo-text {
      font-family: 'Noto Serif JP', serif;
      font-size: 32px;
      font-weight: 500;
      color: var(--ink);
      letter-spacing: 0.04em;
  }

  .nav-logo-sub {
      font-size: 12px;
      color: var(--ink-light);
      letter-spacing: 0.12em;
      margin-top: 1px;
  }

  .nav-right {
      display: flex;
      align-items: center;
      gap: 16px;
  }

  .nav-badge {
      background: var(--blue-light);
      color: var(--blue);
      font-size: 12px;
      font-weight: 600;
      padding: 5px 14px;
      border-radius: 2px;
      letter-spacing: 0.08em;
  }

  .nav-apply {
      background: var(--blue);
      color: white;
      font-size: 13px;
      font-weight: 600;
      padding: 8px 20px;
      border-radius: 2px;
      border: none;
      cursor: pointer;
      letter-spacing: 0.06em;
      transition: background 0.2s;
      font-family: 'Noto Sans JP', sans-serif;
      text-decoration: none;
  }

  .nav-apply:hover {
      background: var(--blue-dark);
  }

  /* ===== HERO ===== */
  .hero {
      background: var(--blue-deeper);
      color: var(--white);
      position: relative;
      overflow: hidden;
      min-height: 600px;
      display: flex;
      flex-direction: column;
  }

  /* diagonal sky stripe */
  .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, var(--blue-deeper) 0%, var(--blue-deeper) 45%, var(--blue) 45%, var(--blue) 70%, var(--sky) 70%, var(--sky) 100%);
      opacity: 0.7;
  }

  .hero-body {
      flex: 1;
      position: relative;
      z-index: 2;
      padding: 72px 40px 56px;
      max-width: 760px;
  }

  .hero-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 11px;
      letter-spacing: 0.22em;
      color: var(--gold);
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 24px;
  }

  .hero-label::before {
      content: '';
      display: block;
      width: 24px;
      height: 2px;
      background: var(--gold);
  }

  .hero-title {
      font-family: 'Noto Serif JP', serif;
      font-size: clamp(28px, 4.5vw, 56px);
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 28px;
      letter-spacing: 0.02em;
  }

  .hero-title em {
      font-style: normal;
      border-bottom: 3px solid var(--gold);
      padding-bottom: 2px;
  }

  .hero-desc {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.72);
      line-height: 2;
      max-width: 480px;
      margin-bottom: 40px;
  }

  .hero-cta {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--gold);
      color: var(--ink);
      padding: 15px 36px;
      font-size: 15px;
      font-weight: 700;
      border-radius: 2px;
      border: none;
      cursor: pointer;
      letter-spacing: 0.06em;
      font-family: 'Noto Sans JP', sans-serif;
      transition: opacity 0.2s;
      text-decoration: none;
  }

  .hero-cta:hover {
      opacity: 0.88;
  }

  .hero-deco {
      position: absolute;
      right: -20px;
      bottom: -20px;
      z-index: 1;
      font-family: 'Noto Serif JP', serif;
      font-size: 240px;
      font-weight: 700;
      color: rgba(255, 255, 255, 0.04);
      line-height: 1;
      pointer-events: none;
      user-select: none;
  }

  /* STATS BAR */
  .hero-stats {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      background: rgba(0, 0, 0, 0.2);
  }

  .stat-item {
      padding: 24px 32px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
  }

  .stat-item:last-child {
      border-right: none;
  }

  .stat-num {
      font-family: 'Noto Serif JP', serif;
      font-size: 30px;
      font-weight: 700;
      color: var(--white);
      line-height: 1;
  }

  .stat-num em {
      font-style: normal;
      font-size: 14px;
      color: var(--gold);
      margin-left: 3px;
  }

  .stat-label {
      font-size: 11px;
      color: rgba(255, 255, 255, 0.45);
      margin-top: 6px;
      letter-spacing: 0.04em;
  }

  /* ===== PHILOSOPHY ===== */
  .philosophy {
      background: var(--blue);
      color: white;
      padding: 60px 40px;
      text-align: center;
      position: relative;
      overflow: hidden;
  }

  .philosophy::before {
      content: '理念';
      position: absolute;
      font-family: 'Noto Serif JP', serif;
      font-size: 200px;
      font-weight: 700;
      color: rgba(255, 255, 255, 0.04);
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      pointer-events: none;
      user-select: none;
      white-space: nowrap;
      width: 100%;
  }

  .philosophy-label {
      font-size: 11px;
      letter-spacing: 0.22em;
      color: rgba(255, 255, 255, 0.5);
      text-transform: uppercase;
      font-weight: 500;
      margin-bottom: 20px;
      position: relative;
      z-index: 1;
  }

  .philosophy-text {
      font-family: 'Noto Serif JP', serif;
      font-size: clamp(16px, 2.2vw, 23px);
      font-weight: 500;
      line-height: 1.9;
      max-width: 680px;
      margin: 0 auto 14px;
      position: relative;
      z-index: 1;
  }

  .philosophy-rule {
      display: block;
      width: 48px;
      height: 2px;
      background: var(--gold);
      margin: 16px auto;
  }

  .philosophy-sub {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.6);
      position: relative;
      z-index: 1;
      line-height: 1.9;
  }

  /* ===== SUBJECTS ===== */
  .subjects {
      padding: var(--section-pad);
      background: var(--white);
  }

  .section-inner {
      max-width: 960px;
      margin: 0 auto;
  }

  .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 11px;
      letter-spacing: 0.2em;
      color: var(--blue);
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 14px;
  }

  .section-eyebrow::before {
      content: '';
      display: block;
      width: 20px;
      height: 2px;
      background: var(--blue);
  }

  .section-title {
      font-family: 'Noto Serif JP', serif;
      font-size: clamp(22px, 2.8vw, 32px);
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
  }

  .section-desc {
      font-size: 14px;
      color: var(--ink-mid);
      max-width: 500px;
      margin-bottom: 44px;
      line-height: 1.9;
  }

  .subject-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      border: 1px solid var(--border);
      border-radius: 10px;
      overflow: hidden;
  }

  .subject-card {
      background: var(--white);
      padding: 36px 24px 32px;
      border-right: 1px solid var(--border);
      transition: background 0.2s;
      position: relative;
  }

  .subject-card:last-child {
      border-right: none;
  }

  .subject-card:hover {
      background: var(--cream);
  }

  .subject-card::before {
      content: '';
      display: block;
      height: 4px;
      background: var(--blue);
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      transform: scaleX(0);
      transition: transform 0.25s ease;
      transform-origin: left;
  }

  .subject-card:hover::before {
      transform: scaleX(1);
  }

  .subject-icon {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: var(--blue-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 16px;
  }

  .subject-name {
      font-family: 'Noto Serif JP', serif;
      font-size: 22px;
      font-weight: 700;
      color: var(--ink);
      margin-bottom: 12px;
  }

  .subject-detail {
      font-size: 13px;
      color: var(--ink-mid);
      line-height: 1.8;
      margin-bottom: 16px;
  }

  .subject-tag {
      display: inline-block;
      background: var(--blue-light);
      color: var(--blue);
      font-size: 11px;
      padding: 4px 10px;
      border-radius: 2px;
      font-weight: 600;
      letter-spacing: 0.05em;
  }

  /* ===== DETAILS ===== */
  .details {
      padding: var(--section-pad);
      background: var(--cream);
  }

  .details-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 44px;
  }

  .detail-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 2px 16px rgba(26, 86, 196, 0.06);
  }

  .detail-header {
      background: var(--blue);
      color: white;
      padding: 18px 22px;
      font-family: 'Noto Serif JP', serif;
      font-size: 15px;
      font-weight: 500;
      letter-spacing: 0.05em;
      display: flex;
      align-items: center;
      gap: 10px;
  }

  .detail-header-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--gold);
      flex-shrink: 0;
  }

  .detail-body {
      padding: 20px 22px;
  }

  .detail-row {
      display: flex;
      gap: 12px;
      padding: 11px 0;
      border-bottom: 1px solid var(--border);
      align-items: flex-start;
  }

  .detail-row:last-child {
      border-bottom: none;
  }

  .detail-key {
      font-size: 12px;
      color: var(--ink-light);
      min-width: 70px;
      padding-top: 2px;
      letter-spacing: 0.03em;
      flex-shrink: 0;
  }

  .detail-val {
      font-size: 14px;
      color: var(--ink);
      line-height: 1.7;
      font-weight: 500;
  }

  .detail-val.highlight {
      color: var(--blue);
      font-weight: 700;
      font-size: 20px;
      font-family: 'Noto Serif JP', serif;
  }

  /* ===== APPEAL ===== */
  .appeal {
      padding: var(--section-pad);
      background: var(--blue-deeper);
      color: white;
  }

  .appeal-inner {
      max-width: 960px;
      margin: 0 auto;
  }

  .appeal-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-top: 44px;
  }

  .appeal-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 10px;
      padding: 32px;
      position: relative;
      overflow: hidden;
      transition: background 0.2s, border-color 0.2s;
  }

  .appeal-item:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(255, 255, 255, 0.18);
  }

  .appeal-item::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--gold);
      transform: scaleX(0);
      transition: transform 0.3s ease;
      transform-origin: left;
  }

  .appeal-item:hover::before {
      transform: scaleX(1);
  }

  .appeal-num {
      font-family: 'Noto Serif JP', serif;
      font-size: 40px;
      font-weight: 700;
      color: rgba(255, 255, 255, 0.1);
      line-height: 1;
      margin-bottom: 12px;
  }

  .appeal-title {
      font-family: 'Noto Serif JP', serif;
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--white);
  }

  .appeal-desc {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.55);
      line-height: 1.9;
  }

  /* ===== SCHEDULE ===== */
  .schedule {
      padding: var(--section-pad);
      background: var(--white);
  }

  .schedule-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 32px;
      font-size: 14px;
      border-radius: 10px;
      overflow: hidden;
      border: 1px solid var(--border);
  }

  .schedule-table th {
      background: var(--blue);
      color: white;
      padding: 14px 20px;
      text-align: left;
      font-weight: 500;
      letter-spacing: 0.04em;
      font-size: 13px;
  }

  .schedule-table td {
      padding: 14px 20px;
      border-bottom: 1px solid var(--border);
      color: var(--ink);
      vertical-align: middle;
  }

  .schedule-table tr:last-child td {
      border-bottom: none;
  }

  .schedule-table tr:nth-child(even) td {
      background: var(--cream);
  }

  .schedule-table .time {
      font-family: 'Noto Serif JP', serif;
      font-weight: 700;
      color: var(--blue);
      font-size: 16px;
      white-space: nowrap;
  }

  .badge-consult {
      display: inline-block;
      background: var(--blue-light);
      color: var(--blue);
      font-size: 12px;
      padding: 3px 10px;
      border-radius: 2px;
      font-weight: 600;
      letter-spacing: 0.04em;
  }

  /* ===== CTA ===== */
  .cta-section {
      padding: 96px 40px;
      background: linear-gradient(160deg, var(--blue-deeper) 0%, var(--blue) 100%);
      text-align: center;
      position: relative;
      overflow: hidden;
  }

  .cta-section::before {
      content: '挑戦';
      position: absolute;
      font-family: 'Noto Serif JP', serif;
      font-size: 220px;
      font-weight: 700;
      color: rgba(255, 255, 255, 0.04);
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      pointer-events: none;
      white-space: nowrap;
      width: 100%;
  }

  .cta-inner {
      max-width: 560px;
      margin: 0 auto;
      position: relative;
      z-index: 1;
  }

  .cta-rule {
      display: block;
      width: 40px;
      height: 3px;
      background: var(--gold);
      margin: 0 auto 28px;
  }

  .cta-title {
      font-family: 'Noto Serif JP', serif;
      font-size: clamp(22px, 3vw, 32px);
      font-weight: 700;
      margin-bottom: 18px;
      line-height: 1.6;
      color: white;
  }

  .cta-desc {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.7);
      line-height: 2;
      margin-bottom: 40px;
  }

  .cta-button {
      display: inline-block;
      background: var(--gold);
      color: var(--ink);
      padding: 18px 56px;
      font-size: 16px;
      font-weight: 700;
      border-radius: 2px;
      cursor: pointer;
      letter-spacing: 0.08em;
      text-decoration: none;
      border: none;
      font-family: 'Noto Sans JP', sans-serif;
      transition: opacity 0.2s, transform 0.15s;
  }

  .cta-button:hover {
      opacity: 0.9;
      transform: translateY(-1px);
  }

  .cta-note {
      margin-top: 18px;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.45);
      letter-spacing: 0.05em;
  }

  /* ===== FOOTER ===== */
  footer {
      background: var(--ink);
      color: rgba(255, 255, 255, 0.35);
      padding: 32px 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12px;
      letter-spacing: 0.04em;
  }

  .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: rgba(255, 255, 255, 0.65);
      font-family: 'Noto Serif JP', serif;
      font-size: 14px;
      font-weight: 500;
  }

  .footer-mark {
      width: 28px;
      height: 28px;
      background: var(--blue);
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
  }

  .footer-mark span {
      color: white;
      font-weight: 700;
      font-size: 13px;
  }

  .how-to-apply {
      display: grid;
      gap: 5px;
      grid-column: 1 / 4;
  }

  .how-to-apply-item {
      display: grid;
      grid-template-columns: 15.625% 84%;
      justify-content: space-between;
  }

  .how-to-apply-hdr {
      align-items: center;
      background-color: #1a56c4;
      border-radius: 10px 0 0 10px;
      box-shadow: 0 2px 16px rgba(26, 86, 196, 0.06);
      color: #fff;
      display: flex;
      font-weight: 500;
      justify-content: center;
      padding: 10px;
  }

  .how-to-apply-hdr-txt {
      display: block;
      width: fit-content;
  }

  .how-to-apply-dtl {
      background-color: #fff;
      border: 1px solid var(--border);
      border-radius: 0 10px 10px 0;
      box-shadow: 0 2px 16px rgba(26, 86, 196, 0.06);
      font-weight: 500;
      padding: 10px;
  }

  .contact-information {
      list-style: none;
  }


  .
  /* ===== RESPONSIVE ===== */
  @media (max-width: 760px) {
      nav {
          padding: 0 20px;
      }

      .nav-badge {
          display: none;
      }

      .hero-body {
          padding: 48px 20px 40px;
      }

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

      .stat-item {
          padding: 18px 20px;
      }

      .hero-deco {
          font-size: 120px;
          right: -10px;
          bottom: -10px;
      }

      .philosophy {
          padding: 48px 20px;
      }

      .subjects,
      .details,
      .appeal,
      .schedule {
          padding: 56px 20px;
      }

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

      .subject-card {
          border-right: none;
          border-bottom: 1px solid var(--border);
      }

      .subject-card:nth-child(odd) {
          border-right: 1px solid var(--border);
      }

      .subject-card:last-child {
          border-bottom: none;
          border-right: none;
      }

      .details-grid {
          grid-template-columns: 1fr;
      }

      .appeal-grid {
          grid-template-columns: 1fr;
      }

      .cta-section {
          padding: 64px 20px;
      }

      footer {
          flex-direction: column;
          text-align: center;
          padding: 24px 20px;
      }
  }

  @media (max-width: 480px) {
      .hero-stats {
          grid-template-columns: repeat(2, 1fr);
      }

      .subject-grid {
          grid-template-columns: 1fr;
      }

      .subject-card {
          border-right: none;
      }

      .subject-card:nth-child(odd) {
          border-right: none;
      }
  }