:root {
  --red: #c41f35;
  --red-dark: #a3182b;
  --blue: #2b6cb0;
  --ink: #1f2933;
  --muted: #52606d;
  --bg-alt: #f5f7fa;
  --border: #e4e7eb;
  --radius: 10px;
  --max: 960px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", Meiryo, sans-serif;
  color: var(--ink);
  line-height: 1.8;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Top bar */
.lp-bar {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(6px);
  z-index: 10;
}
.lp-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.lp-brand {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--red);
  text-decoration: none;
  letter-spacing: 0.05em;
}
.lp-bar a.back {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.lp-bar a.back:hover { color: var(--red); }

/* Hero */
.lp-hero {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}
.lp-hero .eyebrow {
  display: inline-block;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  background: rgba(255, 255, 255, 0.18);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.lp-hero h1 {
  font-size: 2.4rem;
  margin: 0 0 16px;
  line-height: 1.4;
}
.lp-hero .lead {
  font-size: 1.15rem;
  opacity: 0.95;
  margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s, background 0.2s, box-shadow 0.2s;
}
.btn-primary { background: #fff; color: var(--red); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }
.btn-outline { background: transparent; color: #fff; border: 2px solid #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); }
.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: var(--red-dark); transform: translateY(-2px); }

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section h2 {
  text-align: center;
  font-size: 1.8rem;
  margin: 0 0 8px;
}
.section h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--red);
  margin: 12px auto 0;
  border-radius: 2px;
}
.section .sub {
  text-align: center;
  color: var(--muted);
  margin: 0 auto 40px;
  max-width: 640px;
}

/* Feature cards */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.feature .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-weight: 700;
  margin-bottom: 14px;
}
.feature h3 { margin: 0 0 10px; font-size: 1.15rem; }
.feature p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* Before / After */
.ba {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: stretch;
}
.ba-col {
  border-radius: var(--radius);
  padding: 28px;
}
.ba-before { background: #fdecec; border: 1px solid #f5c6c6; }
.ba-after { background: #e8f1fb; border: 1px solid #c3ddf5; }
.ba-col h3 { margin: 0 0 16px; font-size: 1.1rem; }
.ba-before h3 { color: var(--red); }
.ba-after h3 { color: var(--blue); }
.ba-col ul { margin: 0; padding-left: 20px; color: var(--muted); }
.ba-col li { margin-bottom: 8px; }
.ba-arrow {
  display: flex;
  align-items: center;
  font-size: 2rem;
  color: var(--muted);
}

/* Flow */
.flow {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: stretch;
}
.flow-step {
  flex: 1 1 150px;
  max-width: 200px;
  background: #fff;
  border: 1px solid var(--border);
  border-top: 4px solid var(--red);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
}
.flow-step .step-no { color: var(--red); font-weight: 700; font-size: 0.85rem; }
.flow-step h4 { margin: 6px 0 6px; font-size: 1rem; }
.flow-step p { margin: 0; font-size: 0.85rem; color: var(--muted); }

/* Download */
.download-box {
  background: #fff;
  border: 2px dashed var(--red);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.download-box img {
  max-width: 200px;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 20px;
}
.download-box p { color: var(--muted); margin: 0 0 20px; }

/* Pricing */
.price-box {
  text-align: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 420px;
  margin: 0 auto;
}
.price-box .amount {
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--red);
}
.price-box .amount small { font-size: 1rem; color: var(--muted); font-weight: 400; }
.price-box .note { color: var(--muted); font-size: 0.9rem; margin-top: 8px; }

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
  color: #fff;
  text-align: center;
  padding: 64px 0;
}
.cta h2 { color: #fff; margin: 0 0 12px; }
.cta h2::after { background: #fff; }
.cta p { margin: 0 0 28px; opacity: 0.95; }

/* Footer */
.lp-footer {
  background: var(--ink);
  color: #cbd2d9;
  text-align: center;
  padding: 28px 0;
  font-size: 0.9rem;
}
.lp-footer a { color: #fff; }

@media (max-width: 720px) {
  .lp-hero h1 { font-size: 1.8rem; }
  .ba { grid-template-columns: 1fr; }
  .ba-arrow { transform: rotate(90deg); justify-content: center; }
}