:root {
  color-scheme: light;
  --ink: #122033;
  --muted: #5f6b7a;
  --subtle: #eef6f7;
  --line: #dbe8ea;
  --teal: #0fb7ae;
  --teal-dark: #087972;
  --orange: #ff9f2d;
  --red: #f15c4b;
  --white: #ffffff;
  --shadow: 0 18px 44px rgba(17, 38, 50, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "BIZ UDGothic", system-ui, sans-serif;
  background: #f7fbff;
  color: var(--ink);
  letter-spacing: 0;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  margin: 14px auto 0;
  padding: 12px 16px;
  border: 1px solid rgba(15, 183, 174, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 30px rgba(17, 38, 50, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 900;
  font-size: 18px;
}

.brand-mark,
.brand-mark img {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 11px;
  box-shadow: 0 8px 18px rgba(17, 38, 50, 0.12);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--teal-dark);
  background: var(--subtle);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.68fr) minmax(0, 1.32fr);
  align-items: start;
  gap: 28px;
  width: min(1340px, calc(100% - 32px));
  margin: 0 auto;
  padding: 70px 0 58px;
}

.hero-copy {
  min-width: 0;
}

.free-badge {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--orange), #ffbd59);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 26px rgba(255, 159, 45, 0.28);
}

.eyebrow,
.section-kicker {
  margin: 18px 0 10px;
  color: var(--teal-dark);
  font-weight: 900;
  font-size: 14px;
}

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

h1 {
  max-width: 11em;
  margin-bottom: 18px;
  font-size: 64px;
  line-height: 1.05;
  font-weight: 900;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 16px;
  font-size: 46px;
  line-height: 1.16;
  font-weight: 900;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.lead,
.section-copy p,
.section-heading p,
.free-card p,
.faq-list p,
.flow p,
.privacy-cards p,
.feature-list p,
.trust-strip span,
.top-log p,
.family-grid p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
  font-weight: 600;
  text-wrap: pretty;
}

.lead {
  max-width: 42em;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 22px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 900;
  text-decoration: none;
}

.primary-button {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 16px 30px rgba(15, 183, 174, 0.25);
}

.secondary-button {
  border: 2px solid var(--line);
  background: #fff;
  color: var(--teal-dark);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  padding: 8px 12px;
  border-radius: 999px;
  background: #fff;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 900;
  border: 1px solid var(--line);
}

.top-log {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 12px 28px rgba(17, 38, 50, 0.06);
}

.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.log-header strong {
  font-weight: 900;
}

.log-header span {
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(15, 183, 174, 0.12);
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 900;
}

.top-log p {
  margin: 0;
  padding: 10px 12px;
  border-radius: 14px;
  background: #f8fcfd;
}

.top-log b {
  color: var(--ink);
}

.top-log .family-hit {
  background: #fff7e9;
  color: #81520f;
}

.hero-visual {
  box-sizing: border-box;
  margin-top: 8px;
  padding: 12px;
  min-width: 0;
  overflow: hidden;
  border-radius: 32px;
  box-shadow: var(--shadow);
  background: #fff;
}

.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0 0 76px;
}

.trust-strip div {
  min-height: 132px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 28px rgba(17, 38, 50, 0.06);
}

.trust-strip strong {
  display: block;
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 900;
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 82px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(22px, 5vw, 64px);
  align-items: center;
}

.feature-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.feature-list div,
.privacy-cards div,
.flow div {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(17, 38, 50, 0.06);
}

.feature-list div {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px;
}

.feature-list strong {
  align-self: center;
  font-size: 20px;
  font-weight: 900;
}

.feature-list p {
  grid-column: 2;
  margin-bottom: 0;
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  color: #fff;
  font-weight: 900;
  font-size: 24px;
}

.feature-icon.red {
  background: var(--red);
}

.feature-icon.teal {
  background: var(--teal);
}

.image-panel,
.wide-image {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border-radius: 30px;
  box-shadow: var(--shadow);
  background: #fff;
}

.image-panel img,
.wide-image img {
  width: 100%;
}

.phone-image {
  width: min(430px, 100%);
  justify-self: center;
}

.relay-section {
  width: min(1260px, calc(100% - 32px));
}

.section-heading {
  max-width: 880px;
  margin: 0 auto 32px;
  text-align: center;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.flow div {
  padding: 22px;
}

.flow span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-weight: 900;
}

.flow strong,
.privacy-cards strong,
.family-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 900;
}

.privacy-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(20px, 5vw, 58px);
  align-items: start;
}

.privacy-cards {
  display: grid;
  gap: 14px;
}

.privacy-cards div {
  padding: 22px;
}

.family-section {
  width: min(1180px, calc(100% - 32px));
}

.family-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.family-grid div {
  min-height: 250px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(17, 38, 50, 0.06);
}

.family-grid span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  font-weight: 900;
}

.family-grid p {
  margin-bottom: 0;
}

.free-section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 82px 0;
}

.free-card {
  position: relative;
  overflow: hidden;
  min-height: 360px;
  padding: clamp(28px, 6vw, 70px);
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(15, 183, 174, 0.96), rgba(8, 121, 114, 0.98)),
    #0fb7ae;
  color: #fff;
  box-shadow: var(--shadow);
}

.free-card h2,
.free-card p,
.free-card .section-kicker {
  color: #fff;
}

.free-card p {
  max-width: 720px;
  opacity: 0.93;
}

.free-mark {
  position: absolute;
  right: clamp(22px, 7vw, 84px);
  bottom: clamp(22px, 5vw, 56px);
  display: grid;
  place-items: center;
  width: clamp(122px, 18vw, 190px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  font-size: 32px;
  font-weight: 900;
  box-shadow: 0 18px 40px rgba(6, 67, 62, 0.22);
}

.faq-section {
  max-width: 980px;
}

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

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(17, 38, 50, 0.05);
}

.faq-list summary {
  cursor: pointer;
  padding: 20px;
  font-size: 18px;
  font-weight: 900;
}

.faq-list p {
  margin: 0;
  padding: 0 20px 20px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 48px;
  color: var(--muted);
  font-weight: 700;
}

.site-footer div {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--teal-dark);
  font-weight: 900;
}

@media (max-width: 920px) {
  .nav-links {
    display: none;
  }

  .hero,
  .section-grid,
  .privacy-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
    padding-top: 42px;
    gap: 28px;
  }

  .hero-copy {
    order: 1;
  }

  .hero-visual {
    order: 2;
    margin-top: 0;
    padding: 14px;
    border-radius: 24px;
  }

  .trust-strip,
  .flow,
  .family-grid {
    grid-template-columns: 1fr;
  }

  .trust-strip {
    padding-bottom: 42px;
  }

  .section,
  .free-section {
    padding: 58px 0;
  }
}

@media (max-width: 560px) {
  .site-header {
    width: calc(100% - 20px);
    margin-top: 10px;
  }

  .hero,
  .section,
  .relay-section,
  .free-section,
  .trust-strip,
  .site-footer {
    width: calc(100% - 24px);
  }

  h1 {
    max-width: 100%;
    font-size: 32px;
    line-height: 1.12;
    text-wrap: wrap;
  }

  h2 {
    font-size: 30px;
    line-height: 1.2;
    text-wrap: wrap;
  }

  .lead,
  .section-copy p,
  .section-heading p,
  .free-card p,
  .faq-list p,
  .flow p,
  .privacy-cards p,
  .feature-list p,
  .trust-strip span,
  .top-log p,
  .family-grid p {
    font-size: 15px;
    line-height: 1.8;
  }

  .hero-actions a {
    width: 100%;
  }

  .hero-points li {
    width: 100%;
  }

  .feature-list div {
    grid-template-columns: 46px minmax(0, 1fr);
    padding: 16px;
  }

  .feature-list p {
    grid-column: 1 / -1;
  }

  .feature-icon {
    width: 46px;
    height: 46px;
    border-radius: 15px;
  }

  .free-card {
    min-height: 0;
    padding-bottom: 170px;
  }

  .free-mark {
    left: 28px;
    right: auto;
  }

  .site-footer {
    display: grid;
  }
}