:root {
  --seo-ink: #0b1f3a;
  --seo-muted: #52647c;
  --seo-line: #dce6f2;
  --seo-soft: #f4f8fd;
  --seo-blue: #1769e8;
  --seo-blue-dark: #0b47ad;
  --seo-green: #0d9f6e;
  --seo-white: #ffffff;
  --seo-shadow: 0 22px 70px rgba(21, 53, 92, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--seo-ink);
  background: #fff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.seo-wrap {
  width: min(1160px, calc(100% - 40px));
  margin-inline: auto;
}

.seo-nav {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(220, 230, 242, 0.9);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
}

.seo-nav-inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--seo-ink);
  font-size: 18px;
  font-weight: 850;
  text-decoration: none;
}

.seo-brand img { width: 38px; height: 38px; border-radius: 10px; }

.seo-nav-links { display: flex; align-items: center; gap: 24px; }
.seo-nav-links a { color: #40536d; font-size: 14px; font-weight: 700; text-decoration: none; }
.seo-nav-links a:hover { color: var(--seo-blue); }

.seo-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--seo-blue), #1556c6);
  box-shadow: 0 10px 26px rgba(23, 105, 232, 0.22);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.seo-button:hover { transform: translateY(-1px); box-shadow: 0 14px 30px rgba(23, 105, 232, 0.28); }
.seo-button.secondary { border-color: var(--seo-line); color: var(--seo-ink); background: #fff; box-shadow: none; }
.seo-button.small { min-height: 40px; padding-inline: 16px; }

.seo-hero {
  overflow: hidden;
  position: relative;
  padding: 94px 0 78px;
  background:
    radial-gradient(circle at 12% 10%, rgba(39, 121, 247, 0.14), transparent 34%),
    radial-gradient(circle at 88% 18%, rgba(16, 185, 129, 0.13), transparent 31%),
    linear-gradient(180deg, #f8fbff 0%, #fff 100%);
}

.seo-hero::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.28;
  background-image: radial-gradient(#8eb2dd 0.8px, transparent 0.8px);
  background-size: 24px 24px;
  mask-image: linear-gradient(to bottom, #000, transparent 80%);
}

.seo-hero-grid {
  display: grid;
  position: relative;
  z-index: 1;
  align-items: center;
  grid-template-columns: minmax(0, 1.07fr) minmax(380px, 0.93fr);
  gap: 64px;
}

.seo-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #bcd5f6;
  border-radius: 999px;
  padding: 7px 12px;
  color: #1556ad;
  background: rgba(239, 246, 255, 0.9);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.seo-eyebrow::before { width: 7px; height: 7px; border-radius: 50%; background: var(--seo-green); content: ""; }

.seo-hero h1 {
  max-width: 760px;
  margin: 22px 0 20px;
  font-size: clamp(42px, 5.4vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.seo-gradient { color: transparent; background: linear-gradient(100deg, #1769e8, #0b9b79); background-clip: text; -webkit-background-clip: text; }
.seo-lead { max-width: 720px; margin: 0; color: var(--seo-muted); font-size: clamp(17px, 2vw, 20px); }
.seo-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.seo-assurance { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 23px; color: #52647c; font-size: 13px; font-weight: 700; }
.seo-assurance span::before { margin-right: 6px; color: var(--seo-green); content: "✓"; }

.seo-preview {
  border: 1px solid rgba(185, 207, 234, 0.9);
  border-radius: 24px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--seo-shadow);
}

.seo-preview-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 4px 4px 17px; }
.seo-preview-top strong { font-size: 14px; }
.seo-live { display: inline-flex; align-items: center; gap: 6px; color: #087955; font-size: 11px; font-weight: 800; }
.seo-live::before { width: 7px; height: 7px; border-radius: 50%; background: #10b981; box-shadow: 0 0 0 4px #d1fae5; content: ""; }
.seo-preview-body { border-radius: 18px; padding: 22px; color: #fff; background: linear-gradient(145deg, #0b2446, #0d3c75); }
.seo-kicker { color: #9cb9db; font-size: 11px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.seo-balance { margin-top: 5px; font-size: 34px; font-weight: 850; letter-spacing: -0.035em; }
.seo-metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 22px; }
.seo-metric { border: 1px solid rgba(255,255,255,.12); border-radius: 13px; padding: 13px; background: rgba(255,255,255,.07); }
.seo-metric small { display: block; color: #bcd0e8; font-size: 11px; }
.seo-metric b { display: block; margin-top: 3px; font-size: 17px; }
.seo-bars { display: flex; height: 80px; align-items: end; gap: 8px; margin-top: 22px; }
.seo-bars span { flex: 1; min-height: 18px; border-radius: 6px 6px 2px 2px; background: linear-gradient(#47a4ff, #1769e8); }

.seo-trustbar { border-block: 1px solid var(--seo-line); background: #fff; }
.seo-trustbar .seo-wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.seo-trust-item { padding: 22px 18px; text-align: center; }
.seo-trust-item + .seo-trust-item { border-left: 1px solid var(--seo-line); }
.seo-trust-item b { display: block; font-size: 14px; }
.seo-trust-item span { color: var(--seo-muted); font-size: 12px; }

.seo-answer-strip {
  padding: 30px 0 0;
  background: #fff;
}

.seo-answer-strip-inner,
.seo-answer-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  border: 1px solid #cfe0f4;
  border-radius: 18px;
  padding: 22px 24px;
  background: linear-gradient(135deg, #f7fbff, #f2fbf8);
  box-shadow: 0 12px 34px rgba(27, 57, 92, 0.06);
}

.seo-answer-strip-label,
.seo-answer-summary > span {
  border-radius: 999px;
  padding: 7px 10px;
  color: #0b57bd;
  background: #e4efff;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.seo-answer-strip p,
.seo-answer-summary p { margin: 0; color: #31445d; font-size: 15px; }
.seo-answer-strip a { color: #0b57bd; font-size: 13px; font-weight: 850; text-decoration: none; white-space: nowrap; }
.seo-answer-strip a::after { margin-left: 6px; content: "→"; }

.seo-section { padding: 84px 0; }
.seo-section.soft { background: var(--seo-soft); }
.seo-section-head { max-width: 760px; margin-bottom: 38px; }
.seo-section-head.center { margin-inline: auto; text-align: center; }
.seo-section h2 { margin: 10px 0 14px; font-size: clamp(30px, 4vw, 46px); line-height: 1.12; letter-spacing: -0.035em; }
.seo-section-head p, .seo-copy p { color: var(--seo-muted); font-size: 17px; }

.seo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.seo-card { border: 1px solid var(--seo-line); border-radius: 18px; padding: 25px; background: #fff; box-shadow: 0 12px 34px rgba(27, 57, 92, 0.06); }
.seo-card-icon { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 12px; color: var(--seo-blue); background: #eaf3ff; font-weight: 900; }
.seo-card h3 { margin: 18px 0 8px; font-size: 19px; }
.seo-card p { margin: 0; color: var(--seo-muted); font-size: 14px; }

.seo-split { display: grid; align-items: center; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 64px; }
.seo-copy h2 { margin-top: 0; }
.seo-checks { display: grid; gap: 12px; margin: 24px 0 0; padding: 0; list-style: none; }
.seo-checks li { display: flex; gap: 11px; color: #31445d; font-weight: 700; }
.seo-checks li::before { display: grid; flex: 0 0 24px; width: 24px; height: 24px; place-items: center; border-radius: 50%; color: #087955; background: #dff8ef; content: "✓"; }
.seo-panel { border: 1px solid #cfe0f4; border-radius: 24px; padding: 30px; background: linear-gradient(150deg, #fff, #eff6ff); box-shadow: var(--seo-shadow); }
.seo-panel-label { color: var(--seo-blue); font-size: 12px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.seo-panel h3 { margin: 9px 0 8px; font-size: 27px; }
.seo-panel p { color: var(--seo-muted); }
.seo-tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.seo-tag { border: 1px solid #cfe0f4; border-radius: 999px; padding: 7px 11px; color: #294769; background: #fff; font-size: 12px; font-weight: 750; }

.seo-faq { display: grid; max-width: 900px; margin-inline: auto; gap: 12px; }
.seo-faq details { border: 1px solid var(--seo-line); border-radius: 15px; padding: 0 20px; background: #fff; }
.seo-faq summary { cursor: pointer; padding: 20px 32px 20px 0; font-weight: 800; }
.seo-faq details p { margin: -4px 0 20px; color: var(--seo-muted); }

.seo-answer-hero {
  padding: 82px 0 62px;
  background:
    radial-gradient(circle at 12% 8%, rgba(39, 121, 247, 0.15), transparent 34%),
    radial-gradient(circle at 86% 12%, rgba(16, 185, 129, 0.13), transparent 30%),
    linear-gradient(180deg, #f8fbff, #fff);
}

.seo-answer-hero-inner { max-width: 940px; }
.seo-answer-hero h1 { margin: 20px 0 18px; font-size: clamp(42px, 6vw, 70px); line-height: 1.04; letter-spacing: -.045em; }
.seo-answer-summary { grid-template-columns: auto minmax(0, 1fr); margin-top: 30px; padding: 24px; }
.seo-topic-links { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.seo-topic-links a { border: 1px solid var(--seo-line); border-radius: 999px; padding: 8px 13px; color: #40536d; background: #fff; font-size: 12px; font-weight: 800; text-decoration: none; }
.seo-topic-links a:hover { border-color: #9fc4f4; color: var(--seo-blue); }
.seo-answer-section .seo-section-head { margin-bottom: 28px; }
.seo-answer-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.seo-answer-card { border: 1px solid var(--seo-line); border-radius: 18px; padding: 26px; background: #fff; box-shadow: 0 12px 34px rgba(27, 57, 92, 0.06); }
.seo-answer-card h3 { margin: 0 0 12px; font-size: 19px; line-height: 1.35; }
.seo-answer-card p { margin: 0; color: var(--seo-muted); font-size: 14px; }
.seo-source-note { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 44px; border: 1px solid var(--seo-line); border-radius: 22px; padding: 34px; background: var(--seo-soft); }
.seo-source-note h2 { margin-bottom: 8px; }
.seo-source-note p { max-width: 740px; margin: 0; color: var(--seo-muted); }
.seo-source-actions { display: grid; gap: 8px; }
.seo-source-actions a { border: 1px solid #cbdced; border-radius: 10px; padding: 10px 13px; color: #1d4d87; background: #fff; font-size: 12px; font-weight: 800; text-align: center; text-decoration: none; white-space: nowrap; }

.seo-cta { padding: 0 0 84px; }
.seo-cta-box { display: grid; align-items: center; grid-template-columns: 1fr auto; gap: 30px; overflow: hidden; position: relative; border-radius: 25px; padding: 46px; color: #fff; background: linear-gradient(135deg, #0b2446, #0f5cc9); box-shadow: var(--seo-shadow); }
.seo-cta-box::after { position: absolute; width: 240px; height: 240px; right: -80px; top: -110px; border: 48px solid rgba(255,255,255,.08); border-radius: 50%; content: ""; }
.seo-cta-box h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 42px); letter-spacing: -.035em; }
.seo-cta-box p { margin: 0; color: #c8dbf3; }
.seo-cta-box .seo-button { position: relative; z-index: 1; color: #0c3a75; background: #fff; box-shadow: none; }

.seo-footer { padding: 34px 0; color: #9db2ca; background: #081a31; font-size: 13px; }
.seo-footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.seo-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.seo-footer a { color: #c3d2e4; text-decoration: none; }

@media (max-width: 900px) {
  .seo-nav-links a:not(.seo-button) { display: none; }
  .seo-hero { padding-top: 68px; }
  .seo-hero-grid, .seo-split { grid-template-columns: 1fr; }
  .seo-hero-grid { gap: 42px; }
  .seo-grid { grid-template-columns: repeat(2, 1fr); }
  .seo-answer-grid { grid-template-columns: 1fr; }
  .seo-source-note { grid-template-columns: 1fr; align-items: start; }
  .seo-source-actions { grid-template-columns: repeat(3, 1fr); }
  .seo-trustbar .seo-wrap { grid-template-columns: repeat(2, 1fr); }
  .seo-trust-item:nth-child(3) { border-left: 0; border-top: 1px solid var(--seo-line); }
  .seo-trust-item:nth-child(4) { border-top: 1px solid var(--seo-line); }
  .seo-cta-box { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .seo-wrap { width: min(100% - 28px, 1160px); }
  .seo-nav-inner { min-height: 64px; }
  .seo-brand { font-size: 16px; }
  .seo-brand img { width: 34px; height: 34px; }
  .seo-nav .seo-button.small { min-height: 38px; padding-inline: 13px; font-size: 12px; }
  .seo-hero { padding: 54px 0 58px; }
  .seo-hero h1 { font-size: clamp(38px, 12vw, 54px); }
  .seo-answer-hero { padding: 54px 0 46px; }
  .seo-answer-hero h1 { font-size: clamp(38px, 12vw, 54px); }
  .seo-answer-strip-inner { grid-template-columns: 1fr; gap: 10px; padding: 19px; }
  .seo-answer-strip-label { width: fit-content; }
  .seo-answer-summary { grid-template-columns: 1fr; gap: 11px; padding: 20px; }
  .seo-answer-summary > span { width: fit-content; }
  .seo-source-note { padding: 24px; }
  .seo-source-actions { grid-template-columns: 1fr; width: 100%; }
  .seo-preview { padding: 12px; }
  .seo-preview-body { padding: 18px; }
  .seo-grid { grid-template-columns: 1fr; }
  .seo-section { padding: 66px 0; }
  .seo-trustbar .seo-wrap { width: 100%; }
  .seo-trust-item { padding: 18px 10px; }
  .seo-cta { padding-bottom: 60px; }
  .seo-cta-box { padding: 34px 24px; }
  .seo-footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}