:root {
  --ink: #172033;
  --muted: #5d687a;
  --line: #d8dee8;
  --surface: #ffffff;
  --panel: #f6f8fb;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --notice: #7c2d12;
  --notice-bg: #fff7ed;
  --blue: #2563eb;
  --red: #dc2626;
  --yellow: #ca8a04;
  --shadow: 0 18px 60px rgba(23, 32, 51, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.65;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
}

a {
  color: var(--accent-strong);
  text-underline-offset: 0.2em;
}

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  color: var(--ink);
  display: inline-flex;
  font-size: 1rem;
  font-weight: 800;
  gap: 0.6rem;
  text-decoration: none;
}

.brand-mark {
  background: var(--accent);
  border-radius: 0.35rem;
  color: #fff;
  display: inline-grid;
  font-size: 0.9rem;
  height: 2rem;
  place-items: center;
  width: 2rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent-strong);
}

.hero {
  background:
    linear-gradient(90deg, rgba(23, 32, 51, 0.86), rgba(23, 32, 51, 0.42)),
    url("assets/calendar-overlap-hero.png") center / cover;
  color: #fff;
  min-height: clamp(420px, 58vh, 620px);
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.25rem, 6vw, 6rem);
}

.hero-inner {
  max-width: 760px;
}

.eyebrow {
  color: #b5f0e9;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 0.8rem;
}

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.18;
}

h1 {
  font-size: clamp(2.35rem, 6vw, 4.8rem);
  margin: 0 0 1rem;
  max-width: 11em;
}

.hero-copy {
  color: #e8eef6;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  margin: 0 0 2rem;
  max-width: 37rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 0.35rem;
  display: inline-flex;
  font-weight: 800;
  min-height: 2.9rem;
  padding: 0.75rem 1rem;
  text-decoration: none;
}

.button.primary {
  background: #ffffff;
  color: var(--accent-strong);
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.7);
  color: #ffffff;
}

.section {
  padding: clamp(3rem, 7vw, 6rem) clamp(1.25rem, 6vw, 6rem);
}

.section.alt {
  background: var(--panel);
}

.section-inner {
  margin: 0 auto;
  max-width: 1120px;
}

.section h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin: 0 0 1rem;
}

.section-lead {
  color: var(--muted);
  font-size: 1.08rem;
  margin: 0 0 2rem;
  max-width: 720px;
}

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

.feature,
.step,
.price,
.notice-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  box-shadow: 0 1px 0 rgba(23, 32, 51, 0.04);
  padding: 1.25rem;
}

.feature h3,
.step h3,
.price h3,
.notice-box h3 {
  font-size: 1.08rem;
  margin: 0 0 0.5rem;
}

.feature p,
.step p,
.price p,
.notice-box p {
  color: var(--muted);
  margin: 0;
}

.tag {
  border-radius: 999px;
  display: inline-flex;
  font-size: 0.76rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  padding: 0.2rem 0.55rem;
}

.tag.blue {
  background: #dbeafe;
  color: var(--blue);
}

.tag.red {
  background: #fee2e2;
  color: var(--red);
}

.tag.yellow {
  background: #fef3c7;
  color: var(--yellow);
}

.price-list {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.price strong {
  display: block;
  font-size: 2rem;
  margin: 0.3rem 0;
}

.plans-notice {
  margin-top: 1rem;
}

.legal-layout {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
}

.toc {
  align-self: start;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 1rem;
  position: sticky;
  top: 5.5rem;
}

.toc a {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.25rem 0;
  text-decoration: none;
}

.legal-content h1 {
  color: var(--ink);
  font-size: clamp(2rem, 5vw, 3.4rem);
  margin: 0 0 1rem;
}

.legal-content h2 {
  border-top: 1px solid var(--line);
  font-size: 1.55rem;
  margin: 2rem 0 0.7rem;
  padding-top: 1.5rem;
}

.legal-content h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.5rem;
}

.legal-content p,
.legal-content li,
.legal-content td,
.legal-content th {
  color: #394456;
}

.legal-content table {
  border-collapse: collapse;
  display: block;
  margin: 1rem 0;
  overflow-x: auto;
  width: 100%;
}

.legal-content th,
.legal-content td {
  border: 1px solid var(--line);
  padding: 0.75rem;
  text-align: left;
  vertical-align: top;
}

.legal-content th {
  background: var(--panel);
  white-space: nowrap;
}

.callout {
  background: #ecfdf5;
  border: 1px solid #99f6e4;
  border-radius: 0.5rem;
  color: #134e4a;
  margin: 1.5rem 0;
  padding: 1rem;
}

.site-footer {
  background: #172033;
  color: #dfe7f2;
  padding: 2rem clamp(1.25rem, 6vw, 6rem);
}

.footer-inner {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1120px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links a {
  color: #dfe7f2;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: 420px;
  }

  .grid,
  .price-list,
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }
}