:root {
  color-scheme: light;
  --seo-ink: #10233f;
  --seo-muted: #52627a;
  --seo-blue: #1769e0;
  --seo-blue-dark: #124fa8;
  --seo-blue-soft: #edf5ff;
  --seo-line: #dce6f2;
  --seo-surface: #f7faff;
  --seo-white: #fff;
  --seo-green: #17844c;
  --seo-shadow: 0 18px 48px rgba(24, 59, 105, .10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--seo-ink);
  background: var(--seo-white);
  font-family: "Be Vietnam Pro", "Segoe UI", sans-serif;
  line-height: 1.7;
}
a { color: var(--seo-blue-dark); text-underline-offset: 3px; }
a:hover { color: var(--seo-blue); }
.seo-wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.seo-header { border-bottom: 1px solid var(--seo-line); background: #fff; }
.seo-header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.seo-brand { color: var(--seo-ink); font-weight: 800; font-size: 19px; text-decoration: none; letter-spacing: -.03em; }
.seo-nav { display: flex; align-items: center; gap: 22px; }
.seo-nav a { color: var(--seo-muted); text-decoration: none; font-size: 14px; font-weight: 600; }
.seo-nav a:hover { color: var(--seo-blue); }
.seo-button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 46px; padding: 11px 20px; border: 1px solid var(--seo-blue); border-radius: 10px; background: var(--seo-blue); color: #fff !important; font-weight: 700; text-decoration: none; box-shadow: 0 8px 18px rgba(23,105,224,.17); }
.seo-button:hover { background: var(--seo-blue-dark); border-color: var(--seo-blue-dark); }
.seo-button-light { background: #fff; color: var(--seo-blue-dark) !important; box-shadow: none; }
.seo-crumbs { padding-top: 22px; color: var(--seo-muted); font-size: 13px; }
.seo-crumbs a { color: var(--seo-muted); }
.seo-hero { padding: 52px 0 66px; background: radial-gradient(circle at 82% 18%, #d9eaff 0, transparent 32%), linear-gradient(180deg,#f6faff 0%,#fff 100%); }
.seo-hero-grid { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(270px,.7fr); align-items: center; gap: 44px; }
.seo-kicker { display: inline-block; margin-bottom: 14px; color: var(--seo-blue-dark); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.seo-hero h1 { max-width: 760px; margin: 0 0 18px; font-size: clamp(34px,5vw,56px); line-height: 1.13; letter-spacing: -.045em; }
.seo-lead { max-width: 720px; margin: 0; color: var(--seo-muted); font-size: 18px; }
.seo-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.seo-note { color: var(--seo-muted); font-size: 13px; margin: 12px 0 0; }
.seo-hero-card { padding: 26px; border: 1px solid #d5e5fa; border-radius: 18px; background: rgba(255,255,255,.92); box-shadow: var(--seo-shadow); }
.seo-hero-card h2 { margin: 0 0 13px; font-size: 17px; }
.seo-checklist { list-style: none; padding: 0; margin: 0; }
.seo-checklist li { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid #edf1f6; color: var(--seo-muted); font-size: 14px; }
.seo-checklist li:last-child { border-bottom: 0; }
.seo-checklist li::before { content: "✓"; color: var(--seo-green); font-weight: 900; }
.seo-strip { border-top: 1px solid var(--seo-line); border-bottom: 1px solid var(--seo-line); background: #fff; }
.seo-strip-grid { display: grid; grid-template-columns: repeat(3,1fr); }
.seo-strip-item { padding: 19px 16px; text-align: center; color: var(--seo-muted); font-size: 14px; font-weight: 650; }
.seo-strip-item + .seo-strip-item { border-left: 1px solid var(--seo-line); }
.seo-section { padding: 72px 0; }
.seo-section-alt { background: var(--seo-surface); }
.seo-section-head { max-width: 760px; margin: 0 auto 34px; text-align: center; }
.seo-eyebrow { color: var(--seo-blue); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.seo-section h2 { margin: 8px 0 12px; font-size: clamp(26px,3.3vw,38px); line-height: 1.25; letter-spacing: -.03em; }
.seo-section-head p, .seo-section p { color: var(--seo-muted); }
.seo-card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.seo-card { height: 100%; padding: 24px; border: 1px solid var(--seo-line); border-radius: 15px; background: #fff; }
.seo-card h3 { margin: 0 0 9px; font-size: 18px; line-height: 1.4; }
.seo-card p { margin: 0; font-size: 14px; }
.seo-card-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 15px; border-radius: 12px; background: var(--seo-blue-soft); color: var(--seo-blue-dark); font-size: 20px; font-weight: 800; }
.seo-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; counter-reset: step; }
.seo-step { padding: 20px; border-radius: 14px; background: #fff; border: 1px solid var(--seo-line); }
.seo-step::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 10px; color: var(--seo-blue); font-size: 13px; font-weight: 900; }
.seo-step h3 { margin: 0 0 8px; font-size: 16px; }
.seo-step p { margin: 0; font-size: 14px; }
.seo-copy { max-width: 820px; margin: 0 auto; }
.seo-copy h2 { margin-top: 30px; }
.seo-copy h3 { margin: 24px 0 8px; font-size: 19px; }
.seo-copy p, .seo-copy li { color: var(--seo-muted); }
.seo-copy li { margin: 7px 0; }
.seo-faq { max-width: 850px; margin: 0 auto; }
.seo-faq details { padding: 18px 0; border-bottom: 1px solid var(--seo-line); }
.seo-faq summary { cursor: pointer; font-weight: 750; }
.seo-faq details p { margin: 12px 0 0; color: var(--seo-muted); }
.seo-table-wrap { overflow-x: auto; margin: 24px 0; border: 1px solid var(--seo-line); border-radius: 14px; background: #fff; }
.seo-table { width: 100%; border-collapse: collapse; min-width: 620px; }
.seo-table th, .seo-table td { padding: 14px 16px; border-bottom: 1px solid var(--seo-line); text-align: left; vertical-align: top; }
.seo-table th { background: var(--seo-surface); color: var(--seo-ink); font-size: 14px; }
.seo-table td { color: var(--seo-muted); font-size: 14px; }
.seo-table tr:last-child td { border-bottom: 0; }
.seo-callout { margin: 24px 0; padding: 20px 22px; border-left: 4px solid var(--seo-blue); border-radius: 0 12px 12px 0; background: var(--seo-blue-soft); }
.seo-callout p:last-child { margin-bottom: 0; }
.seo-content-list li { margin: 8px 0; color: var(--seo-muted); }
.seo-cta { padding: 44px; border-radius: 20px; background: linear-gradient(120deg,#123d78,#1769e0); color: #fff; text-align: center; }
.seo-cta h2 { margin: 0 0 10px; font-size: clamp(25px,3vw,36px); }
.seo-cta p { color: rgba(255,255,255,.85); margin: 0 auto 22px; max-width: 650px; }
.seo-cta .seo-button { background: #fff; border-color: #fff; color: var(--seo-blue-dark) !important; box-shadow: none; }
.seo-footer { padding: 30px 0; border-top: 1px solid var(--seo-line); color: var(--seo-muted); font-size: 13px; }
.seo-footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; }
.seo-footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.seo-footer-links a { color: var(--seo-muted); }
@media (max-width: 800px) {
  .seo-nav { gap: 12px; }
  .seo-nav a:not(.seo-button) { display: none; }
  .seo-hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .seo-card-grid { grid-template-columns: 1fr 1fr; }
  .seo-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .seo-wrap { width: min(100% - 28px,1120px); }
  .seo-header-inner { min-height: 64px; }
  .seo-brand { font-size: 16px; }
  .seo-nav .seo-button { min-height: 40px; padding: 8px 12px; font-size: 12px; }
  .seo-hero { padding: 35px 0 44px; }
  .seo-hero h1 { font-size: 36px; }
  .seo-lead { font-size: 16px; }
  .seo-strip-grid { grid-template-columns: 1fr; }
  .seo-strip-item { padding: 12px; }
  .seo-strip-item + .seo-strip-item { border-left: 0; border-top: 1px solid var(--seo-line); }
  .seo-section { padding: 52px 0; }
  .seo-card-grid, .seo-steps { grid-template-columns: 1fr; }
  .seo-cta { padding: 30px 20px; }
}