:root {
  --bg: #f8fcff;
  --surface: #ffffff;
  --primary: #123f79;
  --secondary: #1f75af;
  --accent: #7fdbf4;
  --muted: #c9d3df;
  --text: #1a2a3a;
  --text-muted: #5a6a7a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Hiragino Sans", "Yu Gothic UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--secondary);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--muted);
  padding: 16px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-inner img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.header-inner h1 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--primary);
}

.hero {
  padding: 40px 0 32px;
  text-align: center;
}

.hero img {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin-bottom: 16px;
}

.hero h2 {
  margin: 0 0 12px;
  font-size: 1.5rem;
  color: var(--primary);
}

.hero p {
  margin: 0 auto 24px;
  max-width: 520px;
  color: var(--text-muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

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

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border: 1px solid var(--muted);
}

section {
  padding: 28px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--muted);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--primary);
}

.card ul {
  margin: 8px 0 0;
  padding-left: 1.2rem;
}

.card li {
  margin-bottom: 4px;
}

.steps {
  display: grid;
  gap: 12px;
}

.step {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.notice {
  background: #fff8e6;
  border: 1px solid #f0d78c;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 0.9rem;
  color: #5a4a20;
}

.partner {
  border-left: 4px solid var(--secondary);
}

footer {
  margin-top: 32px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--muted);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

footer a {
  margin: 0 8px;
}

.header-inner a {
  color: inherit;
  text-decoration: none;
}

.policy h2 {
  margin: 24px 0 8px;
  color: var(--primary);
}

.policy-meta {
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.policy .card h3 {
  margin-top: 0;
}

.policy code {
  font-size: 0.9em;
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.header-inner a {
  color: inherit;
  text-decoration: none;
}

.policy h2 {
  margin: 24px 0 8px;
  color: var(--primary);
}

.policy-meta {
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.policy .card h3 {
  margin-top: 0;
}

.policy code {
  font-size: 0.9em;
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
}