/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #222;
  background: #f8f9fa;
}

a { color: #0066cc; text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 広告表示 ===== */
.ad-disclosure {
  background: #fff3cd;
  border-bottom: 1px solid #ffc107;
  text-align: center;
  padding: 8px 16px;
  font-size: 13px;
  color: #555;
}
.ad-disclosure span {
  display: inline-block;
  background: #ffc107;
  color: #333;
  font-weight: bold;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
  margin-right: 8px;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #0d47a1 100%);
  color: #fff;
  padding: 60px 0 50px;
  text-align: center;
}
.hero-label {
  font-size: 13px;
  letter-spacing: 0.1em;
  opacity: 0.8;
  margin-bottom: 12px;
  background: rgba(255,255,255,0.15);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
}
.hero h1 {
  font-size: clamp(24px, 5vw, 36px);
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 15px;
  opacity: 0.9;
  margin-bottom: 32px;
}
.risk-note {
  font-size: 12px;
  opacity: 0.7;
  margin-top: 12px;
}
.risk-note a { color: rgba(255,255,255,0.8); text-decoration: underline; }

/* ===== Button ===== */
.btn-main {
  display: inline-block;
  background: #ff6600;
  color: #fff !important;
  font-weight: bold;
  font-size: 17px;
  padding: 16px 40px;
  border-radius: 50px;
  text-decoration: none !important;
  transition: background 0.2s, transform 0.1s;
  box-shadow: 0 4px 16px rgba(255,102,0,0.4);
}
.btn-main:hover {
  background: #e55a00;
  transform: translateY(-1px);
  text-decoration: none;
}

/* ===== Main sections ===== */
main { padding: 40px 0 60px; }

section {
  background: #fff;
  border-radius: 12px;
  padding: 36px 32px;
  margin-bottom: 28px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

section h2 {
  font-size: 22px;
  font-weight: 800;
  color: #1a237e;
  border-left: 5px solid #ff6600;
  padding-left: 14px;
  margin-bottom: 20px;
}

section h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 24px 0 10px;
  color: #333;
}

section p { margin-bottom: 14px; color: #444; }

section ul, section ol {
  padding-left: 24px;
  margin-bottom: 14px;
}
section li { margin-bottom: 8px; color: #444; }

/* ===== 目次 ===== */
.toc {
  background: #f0f4ff;
  border: 1px solid #c5cae9;
  border-radius: 10px;
  padding: 20px 24px;
  margin-bottom: 28px;
}
.toc-title {
  font-weight: bold;
  font-size: 14px;
  color: #1a237e;
  margin-bottom: 10px;
}
.toc ol { margin: 0; padding-left: 20px; }
.toc li { font-size: 14px; margin-bottom: 6px; }
.toc a { color: #1a237e; }

/* ===== 特典カード ===== */
.benefit-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}
@media (max-width: 540px) {
  .benefit-cards { grid-template-columns: 1fr; }
}
.benefit-card {
  border: 2px solid #e0e0e0;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
}
.benefit-card.highlight {
  border-color: #ff6600;
  background: #fff8f4;
}
.benefit-num {
  font-size: 12px;
  font-weight: bold;
  color: #ff6600;
  margin-bottom: 6px;
}
.benefit-title {
  font-size: 18px;
  font-weight: 800;
  color: #1a237e;
  margin-bottom: 8px;
}
.benefit-desc { font-size: 14px; color: #555; margin: 0; }

/* ===== 注意ボックス ===== */
.caution-box {
  background: #fff3e0;
  border-left: 4px solid #ff9800;
  padding: 14px 16px;
  border-radius: 0 8px 8px 0;
  font-size: 14px;
  color: #555;
  margin: 16px 0;
}

.note-box {
  background: #f5f5f5;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  color: #777;
  margin: 12px 0;
}

/* ===== 5つの特徴 ===== */
.feature-list { display: flex; flex-direction: column; gap: 16px; }
.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px;
  background: #f8f9fa;
  border-radius: 10px;
}
.feature-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: #1a237e;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 16px;
}
.feature-item h3 { margin: 0 0 6px; font-size: 16px; }
.feature-item p { margin: 0; font-size: 14px; color: #555; }

/* ===== ステップ ===== */
.steps { display: flex; flex-direction: column; align-items: center; gap: 4px; margin: 24px 0; }
.step {
  width: 100%;
  background: #f0f4ff;
  border: 2px solid #c5cae9;
  border-radius: 10px;
  padding: 18px 20px;
  text-align: center;
}
.step-num {
  display: inline-block;
  background: #1a237e;
  color: #fff;
  font-size: 12px;
  font-weight: bold;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.step p { font-weight: 700; font-size: 17px; margin: 6px 0 4px; color: #1a237e; }
.step small { font-size: 13px; color: #666; }
.step-arrow { font-size: 20px; color: #1a237e; line-height: 1; }

/* ===== 注意リスト ===== */
.caution-list { list-style: none; padding: 0; }
.caution-list li {
  padding: 8px 8px 8px 28px;
  position: relative;
  border-bottom: 1px solid #f0f0f0;
  font-size: 14px;
}
.caution-list li::before {
  content: "×";
  position: absolute;
  left: 6px;
  color: #e53935;
  font-weight: bold;
}

/* ===== CTA Section ===== */
.cta-section {
  text-align: center;
  margin: 32px 0 8px;
}
.cta-section .risk-note {
  font-size: 12px;
  color: #888;
  margin-top: 10px;
}

/* ===== Footer ===== */
footer {
  background: #1a237e;
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 32px 20px;
  font-size: 13px;
  line-height: 2;
}
footer a { color: rgba(255,255,255,0.8); text-decoration: underline; }

/* ===== Mobile ===== */
@media (max-width: 600px) {
  section { padding: 24px 18px; }
  .hero { padding: 40px 0 36px; }
  .btn-main { font-size: 15px; padding: 14px 28px; }
}