/* Header shared styles */
html {
  overflow-y: scroll;
}

  :root {
      --bg: #ffffff;
      --text: #1a1a1a;
      --muted: #6e6e6e;
      --gray-light: #f4f4f4;
      --gray-border: #e5e7eb;
      --accent: #0d47a1;
      --accent-light: #e3edff;

      --radius: 12px;
      --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.06);
    }

    body {
      margin: 0;
      font-family: 'Zen Maru Gothic', 'Noto Sans JP', system-ui, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.8;
    }

header {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gray-border);
  position: sticky;
  top: 0;
  z-index: 20;
}

header .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}

.logo {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.03em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 32px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 15px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  padding-bottom: 2px;
  transition: .2s;
}

.nav-links a:hover {
  border-bottom: 2px solid var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.btn-login {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  border: 2px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.btn-login:hover {
  background: var(--accent);
  color: #fff;
}


    /* Buttons */
    .btn {
      display: inline-block;
      padding: 12px 24px;
      border-radius: 4px;
      border: 2px solid var(--accent);
      color: var(--accent);
      text-decoration: none;
      font-weight: 600;
      font-size: 15px;
      transition: 0.2s;
    }

    .btn:hover {
      background: var(--accent);
      color: #fff;
    }

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

    .btn-primary:hover {
      background: #09367a;
    }

    .txt_red{
      color:red;
    }