:root {
  --primary: #0b63ce;
  --primary-dark: #084b9f;
  --primary-soft: #e8f2ff;
  --accent: #16a3b8;
  --text: #122033;
  --muted: #5b6b7f;
  --line: #dce7f3;
  --bg: #f7fbff;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(14, 62, 118, 0.14);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

img,
svg {
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 251, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 231, 243, 0.8);
}

.nav,
.section,
.site-footer,
.legal-page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.18rem;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  box-shadow: 0 10px 28px rgba(11, 99, 206, 0.25);
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.is-open span:nth-child(2) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(3) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(4) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-links {
  position: absolute;
  top: 72px;
  left: 16px;
  right: 16px;
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.nav-links.is-open {
  display: flex;
}

.nav-links a {
  padding: 10px 12px;
  color: var(--muted);
  font-weight: 700;
  border-radius: 10px;
}

.nav-links a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}

.section {
  padding: 64px 0;
}

.hero {
  display: grid;
  gap: 36px;
  align-items: center;
  padding-top: 48px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 6px;
  font-size: clamp(3rem, 14vw, 5.6rem);
  line-height: 1;
  letter-spacing: -0.08em;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.8rem, 7vw, 3rem);
  line-height: 1.22;
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.subtitle {
  margin-bottom: 18px;
  color: var(--primary);
  font-size: clamp(1.35rem, 5vw, 2.2rem);
  font-weight: 800;
}

.hero-copy,
.section-heading p,
.beta-copy p,
.legal-page p,
.legal-page li,
.problem-grid p,
.feature-card p,
.timeline p {
  color: var(--muted);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 16px 32px rgba(11, 99, 206, 0.25);
}

.button.primary:hover {
  background: var(--primary-dark);
}

.button.secondary {
  border-color: var(--line);
  background: var(--white);
  color: var(--primary);
}

.button.full {
  width: 100%;
}

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

.trust-list li {
  padding: 7px 11px;
  border-radius: 999px;
  background: var(--white);
  color: var(--muted);
  border: 1px solid var(--line);
  font-size: 0.86rem;
  font-weight: 700;
}

.hero-card,
.problem-grid article,
.feature-card,
.beta-form,
.legal-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 18px;
}

.card-top {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.card-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #c8d7e8;
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.metric-row div {
  padding: 16px;
  border-radius: 16px;
  background: linear-gradient(180deg, #f4f9ff, #ffffff);
  border: 1px solid var(--line);
}

.metric-row p {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.8rem;
}

.metric-row strong {
  font-size: 2rem;
  color: var(--primary);
}

.shipping-box {
  display: grid;
  gap: 10px;
}

.route-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
  border-radius: 14px;
  background: #f8fbff;
  border: 1px solid var(--line);
}

.route-line.active {
  border-color: rgba(11, 99, 206, 0.28);
  background: var(--primary-soft);
}

.route-line b {
  color: var(--primary);
}

.section-heading {
  margin-bottom: 28px;
}

.section-heading.centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
  max-width: 720px;
}

.problem-grid,
.feature-grid {
  display: grid;
  gap: 16px;
}

.problem-grid article,
.feature-card {
  padding: 22px;
}

.feature-number {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--primary);
  font-weight: 800;
}

.workflow {
  display: grid;
  gap: 24px;
}

.timeline {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.timeline span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  font-weight: 800;
}

.beta {
  display: grid;
  gap: 28px;
}

.beta-form {
  display: grid;
  gap: 16px;
  padding: 22px;
}

.beta-form label {
  display: grid;
  gap: 7px;
  font-weight: 800;
}

.beta-form input,
.beta-form select,
.beta-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 14px;
  background: #fbfdff;
  color: var(--text);
  outline: none;
}

.beta-form input:focus,
.beta-form select:focus,
.beta-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(11, 99, 206, 0.12);
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.form-note.success {
  color: #0a7a49;
  font-weight: 700;
}

.site-footer {
  display: grid;
  gap: 20px;
  padding: 34px 0 42px;
  border-top: 1px solid var(--line);
}

.footer-logo {
  margin-bottom: 10px;
}

.site-footer p {
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.site-footer nav a {
  color: var(--muted);
  font-weight: 700;
}

.legal-page {
  padding: 44px 0 72px;
}

.legal-hero {
  margin-bottom: 24px;
}

.legal-card {
  padding: 24px;
}

.legal-card section + section {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.legal-card ul {
  padding-left: 1.3rem;
}

.contact-list {
  display: grid;
  gap: 12px;
  padding: 0;
  list-style: none;
}

.contact-list li {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fbfdff;
}

@media (min-width: 720px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }

  .hero {
    grid-template-columns: 1.08fr 0.92fr;
    padding-top: 76px;
  }

  .hero-actions {
    flex-direction: row;
  }

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

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-card.wide {
    grid-column: 1 / -1;
  }

  .workflow,
  .beta {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

  .site-footer {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .feature-card.wide {
    grid-column: span 2;
  }
}

.legal-links {
  position: static;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-end;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}