:root {
  --seo-ink: #171722;
  --seo-muted: #676778;
  --seo-line: rgba(23, 23, 34, 0.12);
  --seo-paper: #fffdfa;
  --seo-blush: #f8e9ec;
  --seo-lilac: #eeeafa;
  --seo-coral: #e87583;
  --seo-deep: #6f4c65;
  --seo-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--seo-ink);
  background: var(--seo-paper);
  font-family: var(--seo-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.seo-shell { min-height: 100vh; overflow: hidden; }

.seo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 48px));
  min-height: 76px;
  margin: 0 auto;
  border-bottom: 1px solid var(--seo-line);
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 17px;
  font-weight: 750;
  letter-spacing: 0;
}

.seo-brand img { width: 30px; height: 30px; }

.seo-header-link {
  color: var(--seo-muted);
  font-size: 14px;
  text-decoration: none;
}

.seo-header-link:hover { color: var(--seo-ink); }

.seo-main { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.seo-hero {
  position: relative;
  padding: 92px 0 86px;
}

.seo-hero::after {
  position: absolute;
  top: 42px;
  right: -110px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: var(--seo-blush);
  content: "";
  opacity: .72;
  z-index: -1;
}

.seo-kicker {
  margin: 0 0 20px;
  color: var(--seo-coral);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.seo-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(40px, 6vw, 78px);
  line-height: 1.08;
  letter-spacing: 0;
}

.seo-lead {
  max-width: 660px;
  margin: 28px 0 0;
  color: var(--seo-muted);
  font-size: 19px;
  line-height: 1.85;
}

.seo-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.seo-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--seo-ink);
  border-radius: 999px;
  background: var(--seo-ink);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .2s ease, background .2s ease;
}

.seo-button:hover { transform: translateY(-2px); background: var(--seo-deep); }

.seo-button.secondary { background: transparent; color: var(--seo-ink); }
.seo-button.secondary:hover { background: #fff; }

.seo-section { padding: 76px 0; border-top: 1px solid var(--seo-line); }

.seo-section.tint { width: 100vw; margin-left: calc((100% - 100vw) / 2); padding-inline: max(24px, calc((100vw - 1180px) / 2)); background: var(--seo-lilac); }

.seo-section h2 { max-width: 700px; margin: 0 0 14px; font-size: clamp(28px, 4vw, 46px); line-height: 1.2; }

.seo-section-intro { max-width: 680px; margin: 0 0 34px; color: var(--seo-muted); font-size: 17px; }

.seo-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }

.seo-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.seo-item {
  min-height: 190px;
  padding: 26px;
  border: 1px solid var(--seo-line);
  border-radius: 18px;
  background: rgba(255, 253, 250, .76);
}

.seo-item-index { color: var(--seo-coral); font-size: 13px; font-weight: 750; }
.seo-item h3 { margin: 16px 0 8px; font-size: 21px; line-height: 1.35; }
.seo-item p { margin: 0; color: var(--seo-muted); line-height: 1.75; }

.seo-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  max-width: 820px;
  padding: 24px 0;
  border-top: 1px solid var(--seo-line);
  border-bottom: 1px solid var(--seo-line);
}

.seo-note-mark { color: var(--seo-coral); font-size: 26px; line-height: 1; }
.seo-note p { margin: 0; color: var(--seo-muted); }

.seo-price-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }

.seo-price {
  display: flex;
  min-height: 250px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--seo-line);
  border-radius: 18px;
  background: #fff;
}

.seo-price.featured { border-color: var(--seo-coral); background: var(--seo-blush); }
.seo-price-period { color: var(--seo-deep); font-size: 13px; font-weight: 750; }
.seo-price h3 { margin: 14px 0 4px; font-size: 20px; }
.seo-price strong { font-size: 38px; line-height: 1.25; }
.seo-price p { min-height: 58px; margin: 12px 0 18px; color: var(--seo-muted); font-size: 14px; line-height: 1.65; }
.seo-price a { margin-top: auto; color: var(--seo-deep); font-size: 14px; font-weight: 700; text-decoration: none; }
.seo-price a:hover { color: var(--seo-coral); }

.seo-steps { counter-reset: seo-step; display: grid; gap: 0; max-width: 840px; }
.seo-step { display: grid; grid-template-columns: 48px 1fr; gap: 18px; align-items: start; padding: 20px 0; border-bottom: 1px solid var(--seo-line); }
.seo-step::before { counter-increment: seo-step; content: counter(seo-step, decimal-leading-zero); color: var(--seo-coral); font-size: 14px; font-weight: 750; }
.seo-step h3 { margin: 0 0 4px; font-size: 19px; }
.seo-step p { margin: 0; color: var(--seo-muted); }

.seo-faq { max-width: 860px; }
.seo-faq details { padding: 20px 0; border-bottom: 1px solid var(--seo-line); }
.seo-faq summary { cursor: pointer; font-size: 18px; font-weight: 700; }
.seo-faq p { max-width: 720px; margin: 12px 0 0; color: var(--seo-muted); }

.seo-footer { width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding: 34px 0 48px; border-top: 1px solid var(--seo-line); }
.seo-footer-nav { display: flex; flex-wrap: wrap; gap: 18px; margin: 0 0 18px; }
.seo-footer-nav a { color: var(--seo-muted); font-size: 14px; text-decoration: none; }
.seo-footer-nav a:hover { color: var(--seo-ink); }
.seo-footer small { color: var(--seo-muted); font-size: 13px; }

@media (max-width: 820px) {
  .seo-hero { padding: 64px 0 58px; }
  .seo-grid, .seo-grid.two, .seo-price-grid { grid-template-columns: 1fr 1fr; }
  .seo-price { min-height: 230px; }
}

@media (max-width: 560px) {
  .seo-header, .seo-main, .seo-footer { width: min(100% - 32px, 1180px); }
  .seo-header { min-height: 64px; }
  .seo-hero h1 { font-size: 42px; }
  .seo-lead { font-size: 17px; }
  .seo-section { padding: 56px 0; }
  .seo-section.tint { margin-left: -16px; padding-inline: 16px; }
  .seo-grid, .seo-grid.two, .seo-price-grid { grid-template-columns: 1fr; }
  .seo-item, .seo-price { min-height: auto; }
  .seo-note { grid-template-columns: 1fr; gap: 8px; }
}