:root {
  --navy: #071a4d;
  --blue: #00a3e0;
  --yellow: #ffc335;
  --bg: #f4fbff;
  --line: #dbe8f0;
  --white: #fff;
  --shadow: 0 18px 45px rgba(7, 26, 77, 0.1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", YuGothic, Meiryo, sans-serif;
  color: #0f172a;
  line-height: 1.8;
  background: #fff;
}
a {
  text-decoration: none;
  color: inherit;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.header-inner {
  width: min(1160px, 92%);
  margin: auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-weight: 950;
  color: var(--navy);
  font-size: 20px;
  letter-spacing: 0.02em;
}
.back-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  display: flex;
  align-items: center;
  gap: 6px;
  border: none;
  background-color: transparent;
  cursor: pointer;
  transition: 0.2s;
}
.back-link:hover {
  opacity: 0.75;
}

/* Hero */
.page-hero {
  background: linear-gradient(115deg, #08173d 0%, #132a66 60%, #1647ad 100%);
  color: #fff;
  padding: 52px 0 44px;
}
.page-hero .container {
  width: min(820px, 92%);
  margin: auto;
}
.page-hero .eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.page-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
}
.page-hero .date {
  margin-top: 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
}

/* Content */
.content {
  width: min(820px, 92%);
  margin: 60px auto 80px;
}
.intro {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 26px;
  color: #475569;
  font-size: 15px;
  margin-bottom: 48px;
  line-height: 1.85;
}
.article {
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}
.article:last-of-type {
  border-bottom: none;
}
.article h2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  background: var(--bg);
  border-left: 4px solid var(--blue);
  padding: 10px 16px;
  border-radius: 0 10px 10px 0;
  margin-bottom: 16px;
}
.article p {
  color: #334155;
  font-size: 15px;
  margin-bottom: 10px;
}
.article ul {
  list-style: none;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 20px;
  margin: 10px 0;
}
.article ul li {
  font-size: 15px;
  color: #334155;
  padding: 5px 0 5px 18px;
  position: relative;
}
.article ul li::before {
  content: "・";
  position: absolute;
  left: 0;
  color: var(--blue);
}
.article ol {
  list-style: none;
  counter-reset: li;
  margin: 10px 0;
}
.article ol li {
  counter-increment: li;
  font-size: 15px;
  color: #334155;
  padding: 6px 0 6px 28px;
  position: relative;
}
.article ol li::before {
  content: counter(li) ".";
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 700;
}

/* Company info */
.company-info {
  background: var(--navy);
  color: #fff;
  border-radius: 16px;
  padding: 28px 32px;
  margin-top: 48px;
}
.company-info p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 4px;
}
.company-info strong {
  font-size: 16px;
  color: #fff;
  display: block;
  margin-bottom: 6px;
}

/* Table for Tokushohou */
.info-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 10px 30px rgba(7, 26, 77, 0.04);
}
.info-table th, .info-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}
.info-table th {
  width: 28%;
  background: #f8fafc;
  color: var(--navy);
  font-weight: 700;
  font-size: 15px;
  border-right: 1px solid var(--line);
  vertical-align: top;
}
.info-table td {
  color: #334155;
  font-size: 15px;
  vertical-align: top;
}
.info-table ul {
  list-style: none;
  padding-left: 0;
}
.info-table ul li {
  padding: 2px 0 2px 18px;
  position: relative;
}
.info-table ul li::before {
  content: "・";
  position: absolute;
  left: 0;
  color: var(--blue);
}
.info-table a {
  color: var(--blue);
  text-decoration: underline;
}

/* Footer */
.footer {
  background: #06153d;
  color: #94a3b8;
  padding: 24px 0;
  font-size: 13px;
  text-align: center;
}

@media (max-width: 768px) {
  .info-table th, .info-table td {
    display: block;
    width: 100%;
  }
  .info-table th {
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 16px 20px 12px;
    background: #f1f5f9;
  }
  .info-table td {
    padding: 12px 20px 16px;
  }
  .page-hero {
    padding: 36px 0 32px;
  }
}
@media (max-width: 640px) {
  .article h2 {
    font-size: 15px;
  }
  .page-hero {
    padding: 36px 0 32px;
  }
}