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

:root {
  --hp-blue: #0066CC;
  --hp-blue-dark: #004fa3;
  --hp-red: #E63312;
  --hp-red-dark: #c2280e;
  --white: #ffffff;
  --off-white: #f5f7fa;
  --gray-100: #eef1f6;
  --gray-200: #d4dae6;
  --gray-500: #6b7590;
  --gray-700: #374060;
  --navy: #0a1628;
  --text: #1a2340;
  --radius: 6px;
  --shadow: 0 4px 20px rgba(0,102,204,0.10);
  --shadow-lg: 0 12px 48px rgba(0,102,204,0.18);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.75;
  overflow-x: hidden;
}
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
section { padding: 88px 0; }

.section-tag {
  display: inline-block;
  font-family: 'Oswald', sans-serif;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--hp-blue);
  background: rgba(0,102,204,0.08);
  border: 1px solid rgba(0,102,204,0.25);
  padding: 4px 14px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.section-title {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(24px, 3.5vw, 38px);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 48px;
  color: var(--navy);
}

/* HEADER */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 3px solid var(--hp-blue);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo-wrap { display: flex; align-items: center; gap: 12px; }
.site-logo { height: 36px; width: auto; }
.site-tagline {
  font-size: 13px;
  font-weight: 700;
  color: var(--hp-blue);
  border-left: 2px solid var(--hp-blue);
  padding-left: 12px;
}
.btn-header {
  background: var(--hp-red);
  color: var(--white);
  padding: 10px 22px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 13px;
  text-decoration: none;
  transition: background var(--transition);
  white-space: nowrap;
}
.btn-header:hover { background: var(--hp-red-dark); }

/* HERO */
.hero {
  position: relative;
  background: var(--hp-blue);
  padding: 128px 0 96px;
  overflow: hidden;
}
.hero-stripe-top {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 8px;
  background: var(--hp-red);
}
.hero-stripe-bottom {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 8px;
  background: var(--hp-red);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-label {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp 0.6s 0.1s forwards;
  position: relative;
}
.hero-title {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(28px, 4.5vw, 56px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--white);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s forwards;
  position: relative;
}
.hero-title em { font-style: normal; color: #FFD84D; }
.hero-title span { display: inline-block; border-bottom: 4px solid var(--hp-red); padding-bottom: 2px; }
.hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.9;
  opacity: 0;
  animation: fadeUp 0.6s 0.3s forwards;
  position: relative;
}
.hero-sub strong { color: #FFD84D; }
.hero-cta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 64px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s 0.4s forwards;
  position: relative;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--hp-red);
  color: var(--white);
  font-weight: 700;
  font-size: 17px;
  padding: 16px 36px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  box-shadow: 0 4px 20px rgba(230,51,18,0.4);
}
.btn-primary:hover { background: var(--hp-red-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(230,51,18,0.5); }
.btn-primary svg { width: 20px; height: 20px; fill: none; stroke: var(--white); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.seats-note { color: rgba(255,255,255,0.7); font-size: 13px; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px 48px;
  opacity: 0;
  animation: fadeUp 0.6s 0.5s forwards;
  position: relative;
}
.stat { display: flex; flex-direction: column; }
.stat .num { font-family: 'Oswald', sans-serif; font-size: 40px; font-weight: 700; color: #FFD84D; line-height: 1; }
.stat .num small { font-size: 20px; }
.stat .label { font-size: 12px; color: rgba(255,255,255,0.6); margin-top: 4px; }

/* PROBLEM */
.problem { background: var(--white); }
.problem-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.problem-card {
  background: var(--off-white);
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--hp-blue);
  border-radius: var(--radius);
  padding: 24px 24px 24px 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: box-shadow var(--transition);
}
.problem-card:hover { box-shadow: var(--shadow); }
.problem-card .icon { font-size: 28px; line-height: 1; flex-shrink: 0; }
.problem-card p { font-size: 15px; color: var(--gray-700); line-height: 1.65; }

/* WHY BID */
.why-bid { background: var(--navy); }
.why-bid .section-tag { color: #FFD84D; background: rgba(255,216,77,0.1); border-color: rgba(255,216,77,0.3); }
.why-bid .section-title { color: var(--white); }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.compare-col { border-radius: var(--radius); padding: 32px; }
.compare-col.bad { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); }
.compare-col.good { background: rgba(0,102,204,0.2); border: 2px solid var(--hp-blue); }
.compare-head { font-size: 16px; font-weight: 700; margin-bottom: 20px; color: var(--white); padding-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,0.15); }
.compare-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.compare-col li { font-size: 14px; color: rgba(255,255,255,0.75); padding-left: 16px; position: relative; line-height: 1.65; }
.compare-col li::before { content: '→'; position: absolute; left: 0; color: var(--gray-500); }
.compare-col.good li::before { color: #FFD84D; }
.compare-col.good li strong { color: #FFD84D; }

/* RESULTS */
.results { background: var(--off-white); }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 20px; }
.result-card { background: var(--white); border: 1px solid var(--gray-200); border-top: 4px solid var(--hp-red); border-radius: var(--radius); padding: 32px 24px; box-shadow: var(--shadow); }
.result-num { font-family: 'Oswald', sans-serif; font-size: 28px; font-weight: 700; color: var(--hp-red); line-height: 1.2; margin-bottom: 8px; }
.result-label { font-size: 13px; font-weight: 700; color: var(--hp-blue); margin-bottom: 12px; }
.result-card p { font-size: 14px; color: var(--gray-700); line-height: 1.7; }
.result-note { font-size: 12px; color: var(--gray-500); text-align: center; }

/* WHY EARN */
.why-earn { background: var(--white); }
.why-list { display: flex; flex-direction: column; }
.why-item { display: flex; gap: 32px; padding: 36px 0; border-bottom: 1px solid var(--gray-200); }
.why-item:first-of-type { border-top: 1px solid var(--gray-200); }
.why-num { font-family: 'Oswald', sans-serif; font-size: 52px; font-weight: 700; color: rgba(0,102,204,0.12); line-height: 1; min-width: 72px; }
.why-content h3 { font-family: 'Noto Serif JP', serif; font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.why-content p { color: var(--gray-700); font-size: 15px; }

/* SERVICE */
.service { background: var(--off-white); }
.service-box { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: start; }
.service-list { display: flex; flex-direction: column; }
.service-item { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--gray-200); align-items: flex-start; }
.service-item:first-of-type { border-top: 1px solid var(--gray-200); }
.si-icon { font-size: 28px; line-height: 1; flex-shrink: 0; padding-top: 2px; }
.si-content h3 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
.si-content p { font-size: 14px; color: var(--gray-700); }
.service-price-box {
  background: var(--hp-blue);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  min-width: 240px;
  position: sticky;
  top: 88px;
  box-shadow: var(--shadow-lg);
}
.price-label { font-size: 12px; color: rgba(255,255,255,0.65); letter-spacing: 0.1em; margin-bottom: 8px; }
.price-main { font-family: 'Oswald', sans-serif; font-size: 44px; font-weight: 700; color: #FFD84D; line-height: 1; margin-bottom: 4px; }
.price-sub { font-size: 12px; color: rgba(255,255,255,0.6); margin-bottom: 16px; }
.price-note { font-size: 13px; color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.08); border-radius: 4px; padding: 10px 12px; margin-bottom: 20px; line-height: 1.7; }
.btn-price {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--hp-red);
  color: var(--white);
  font-weight: 700;
  font-size: 15px;
  padding: 14px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background var(--transition);
}
.btn-price:hover { background: var(--hp-red-dark); }
.btn-price svg { width: 18px; height: 18px; fill: none; stroke: white; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* FIT */
.fit { background: var(--white); }
.fit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.fit-card { background: var(--off-white); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 20px; display: flex; gap: 12px; align-items: flex-start; font-size: 14px; color: var(--gray-700); line-height: 1.65; }
.fit-card span { font-size: 20px; flex-shrink: 0; }

/* FAQ */
.faq { background: var(--off-white); }
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--gray-200); }
.faq-item:first-of-type { border-top: 1px solid var(--gray-200); }
.faq-item summary { padding: 18px 0; font-size: 15px; font-weight: 700; color: var(--navy); cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; user-select: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 24px; color: var(--hp-blue); font-weight: 300; transition: transform var(--transition); flex-shrink: 0; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 0 18px; font-size: 14px; color: var(--gray-700); line-height: 1.8; }

/* CTA FINAL */
.cta-final { background: var(--hp-blue); padding: 100px 0; position: relative; overflow: hidden; }
.cta-final::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 6px; background: var(--hp-red); }
.cta-final::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 6px; background: var(--hp-red); }
.cta-box { text-align: center; }
.cta-tag { display: inline-block; font-family: 'Oswald', sans-serif; font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: #FFD84D; background: rgba(255,216,77,0.1); border: 1px solid rgba(255,216,77,0.3); padding: 4px 14px; border-radius: 2px; margin-bottom: 16px; }
.cta-box h2 { font-family: 'Noto Serif JP', serif; font-size: clamp(24px, 3.5vw, 40px); font-weight: 700; color: var(--white); margin-bottom: 16px; }
.cta-box > p { font-size: 16px; color: rgba(255,255,255,0.8); margin-bottom: 36px; line-height: 1.8; }
.btn-cta { display: inline-flex; align-items: center; gap: 12px; background: var(--hp-red); color: var(--white); font-weight: 700; font-size: 18px; padding: 18px 44px; border-radius: var(--radius); text-decoration: none; margin-bottom: 16px; transition: transform var(--transition), background var(--transition), box-shadow var(--transition); box-shadow: 0 4px 24px rgba(230,51,18,0.4); }
.btn-cta:hover { background: var(--hp-red-dark); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(230,51,18,0.5); }
.btn-cta svg { width: 22px; height: 22px; fill: none; stroke: white; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.cta-sub { font-size: 13px; color: rgba(255,255,255,0.55); }

/* FOOTER */
.site-footer { background: var(--navy); padding: 48px 0 24px; }
.footer-inner { display: flex; align-items: center; gap: 20px; padding-bottom: 24px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 20px; }
.footer-logo { height: 32px; width: auto; filter: brightness(0) invert(1); opacity: 0.8; }
.footer-inner p { font-size: 13px; color: rgba(255,255,255,0.5); }
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.25); text-align: center; }

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 768px) {
  section { padding: 64px 0; }
  .site-tagline { display: none; }
  .problem-grid, .compare-grid, .result-grid, .fit-grid { grid-template-columns: 1fr; }
  .service-box { grid-template-columns: 1fr; }
  .service-price-box { position: static; }
  .hero-stats { gap: 20px 32px; }
  .stat .num { font-size: 30px; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .btn-primary, .btn-cta { font-size: 15px; padding: 14px 24px; }
}