:root {
  --deep: #0b1d3a;
  --ocean: #0a6fb8;
  --teal: #08758b;
  --aqua: #6ed1e6;
  --sand: #f3e9da;
  --ink: #17313d;
  --muted: #5d7380;
  --line: rgba(8, 117, 139, 0.16);
  --card: rgba(255, 255, 255, 0.86);
  color: var(--ink);
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(110, 209, 230, 0.24), transparent 34rem),
    linear-gradient(180deg, #f7fcfc 0%, #edf8f7 54%, #f8f4ed 100%);
}

a {
  color: inherit;
}

.seo-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 48px;
}

.seo-nav,
.seo-footer {
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.seo-brand img {
  width: min(260px, 58vw);
  height: auto;
  display: block;
}

.seo-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
}

.seo-nav-links a,
.seo-button {
  display: inline-flex;
  min-height: 42px;
  padding: 11px 16px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--deep);
  font-size: 0.92rem;
  font-weight: 900;
  text-decoration: none;
}

.seo-button.primary {
  color: #fff;
  background: linear-gradient(135deg, #08758b, #20b9aa);
  border-color: transparent;
  box-shadow: 0 16px 32px rgba(8, 117, 139, 0.18);
}

.seo-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: 32px;
  align-items: center;
  padding: 54px 0 36px;
}

.seo-kicker,
.seo-section-kicker {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 18px;
  color: var(--deep);
  font-size: clamp(2.35rem, 7vw, 5.2rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 12px;
  color: var(--deep);
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  letter-spacing: -0.03em;
}

h3 {
  margin-bottom: 8px;
  color: var(--deep);
  font-size: 1.04rem;
}

.seo-lead {
  max-width: 720px;
  color: #36515e;
  font-size: clamp(1rem, 2vw, 1.22rem);
  line-height: 1.7;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.seo-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 24px 70px rgba(8, 54, 67, 0.1);
}

.seo-hero-card {
  position: relative;
  display: grid;
  grid-template-rows: auto auto;
  gap: 10px;
  min-height: 0;
  padding: 12px;
  overflow: hidden;
  background: linear-gradient(180deg, #f3fbfb, #e6f6f5);
  isolation: isolate;
}

.seo-hero-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: none;
  min-height: 0;
  border-radius: 18px;
  object-fit: contain;
  background: #dff4f4;
}

.seo-hero-card::after {
  display: none;
}

.seo-hero-note {
  position: relative;
  z-index: 1;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, #083643, #075a6b);
}

.seo-image-credit {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 1;
  padding: 7px 10px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(8, 54, 67, 0.42);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.seo-hero-note strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.35rem;
}

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

.seo-section {
  padding: 34px 0;
}

.seo-panel {
  padding: 22px;
}

.seo-panel p,
.seo-faq p,
.seo-footer p {
  color: var(--muted);
  line-height: 1.65;
}

.seo-insight-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.seo-insight-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid rgba(8, 117, 139, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.62);
  color: #36515e;
  line-height: 1.55;
}

.seo-insight-list li::before {
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-radius: 999px;
  content: "";
  background: linear-gradient(135deg, #08758b, #6ed1e6);
  box-shadow: 0 0 0 5px rgba(110, 209, 230, 0.18);
}

.seo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 18px;
}

.seo-tags span {
  padding: 8px 11px;
  border-radius: 999px;
  color: #075a6b;
  background: #e8f6f5;
  font-size: 0.82rem;
  font-weight: 900;
}

.seo-link-card {
  min-height: 154px;
  padding: 20px;
  text-decoration: none;
}

.seo-link-card span {
  color: var(--teal);
  font-size: 0.74rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.seo-faq {
  display: grid;
  gap: 12px;
}

.seo-faq details {
  padding: 18px 20px;
}

.seo-faq summary {
  color: var(--deep);
  cursor: pointer;
  font-weight: 950;
}

.seo-footer {
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.seo-footer img {
  width: 56px;
  height: auto;
}

@media (max-width: 820px) {
  .seo-nav,
  .seo-footer {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .seo-hero {
    grid-template-columns: 1fr;
    padding-top: 34px;
  }

  .seo-hero-card {
    padding: 10px;
  }

  .seo-grid,
  .seo-link-grid {
    grid-template-columns: 1fr;
  }
}