:root {
  --ink: #17202a;
  --muted: #5f6b7a;
  --line: #dfe7ef;
  --paper: #ffffff;
  --soft: #f4f8fb;
  --blue: #0b72b9;
  --green: #00965f;
  --pink: #ef5f9a;
  --yellow: #ffd24a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  background: var(--paper);
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
video {
  max-width: 100%;
  height: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(16px, 4vw, 48px);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 800;
  font-size: 18px;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 700;
}

.hero {
  background: #17202a;
}

.hero-video {
  display: block;
  width: 100%;
  max-height: min(76vh, 760px);
  object-fit: contain;
  background: #000;
}

.hero-panel {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 44px;
  color: #fff;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-weight: 900;
  font-size: 15px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1.08;
  font-weight: 900;
}

.lead {
  max-width: 640px;
  margin-bottom: 26px;
  color: #d9e6ef;
  font-size: 19px;
  line-height: 1.8;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 14px 22px;
  border-radius: 6px;
  color: #fff;
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(23, 32, 42, 0.16);
}

.btn-call {
  background: var(--blue);
}

.btn-line {
  background: var(--green);
}

.btn-mail {
  background: var(--pink);
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.trust-list li {
  padding: 8px 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
}

.contact-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px clamp(16px, 5vw, 64px);
  color: #fff;
  background: #17202a;
}

.contact-band strong,
.contact-band a {
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 900;
}

.contact-band span {
  display: block;
  margin-top: 4px;
  color: #d9e6ef;
}

.section {
  padding: 80px clamp(16px, 5vw, 64px);
}

.section-head {
  width: min(920px, 100%);
  margin: 0 auto 34px;
  text-align: center;
}

.section-head h2,
.area-card h2,
.final-cta h2 {
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.25;
  font-weight: 900;
}

.problem-grid,
.reason-list,
.price-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.problem-grid article,
.reason-list article,
.price-grid div,
details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 26px rgba(23, 32, 42, 0.07);
}

.problem-grid article,
.reason-list article {
  padding: 24px;
}

.problem-grid h3,
.reason-list h3 {
  margin-bottom: 10px;
  font-size: 21px;
  font-weight: 900;
}

.problem-grid p,
.reason-list p,
.note,
details p,
.area-card p,
.final-cta p {
  color: var(--muted);
  line-height: 1.8;
}

.price,
.faq {
  background: var(--soft);
}

.reason-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.reason-list span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--yellow);
  font-weight: 900;
}

.price-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.price-grid div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
}

.price-grid span {
  font-weight: 800;
}

.price-grid strong {
  color: var(--blue);
  font-size: 22px;
}

.note {
  width: min(1180px, 100%);
  margin: 18px auto 0;
}

.area-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 38px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, #0b72b9, #00965f);
}

.area-card p,
.area-card .eyebrow {
  color: #fff;
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: min(980px, 100%);
  padding: 0;
  margin: 0 auto;
  list-style: none;
  counter-reset: flow;
}

.flow-list li {
  position: relative;
  padding: 24px 24px 24px 76px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.flow-list li:before {
  counter-increment: flow;
  content: counter(flow);
  position: absolute;
  left: 22px;
  top: 24px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 900;
}

.flow-list strong,
.flow-list span {
  display: block;
}

.flow-list strong {
  margin-bottom: 6px;
  font-size: 20px;
}

.flow-list span {
  color: var(--muted);
  line-height: 1.7;
}

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

details {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 18px 22px;
}

summary {
  cursor: pointer;
  font-weight: 900;
  font-size: 18px;
}

details p {
  margin: 12px 0 0;
}

.final-cta {
  padding: 80px clamp(16px, 5vw, 64px);
  text-align: center;
  background: #17202a;
  color: #fff;
}

.final-cta p {
  color: #d9e6ef;
}

.final-cta .hero-actions {
  justify-content: center;
}

.footer {
  padding: 24px;
  text-align: center;
  color: #fff;
  background: #0d141b;
}

.footer p {
  margin: 0;
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .hero-panel {
    width: auto;
    padding: 24px 16px 32px;
  }

  .lead {
    font-size: 16px;
  }

  .btn {
    width: 100%;
  }

  .contact-band,
  .area-card {
    display: block;
    text-align: center;
  }

  .contact-band a {
    display: block;
    margin-top: 12px;
  }

  .problem-grid,
  .reason-list,
  .price-grid,
  .flow-list {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 56px 16px;
  }

  .area-card {
    padding: 28px 18px;
  }

  .area-card .btn {
    margin-top: 18px;
  }
}