:root {
  --ink: #241407;
  --muted: #745a38;
  --paper: #fffaf0;
  --line: #ead9ba;
  --gold: #d6a23a;
  --red: #9b2f23;
  --green: #2f6b45;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  background:
    linear-gradient(180deg, rgba(41, 23, 9, .96), rgba(97, 55, 20, .92) 34%, #f5ead4 34%, #fffaf0 100%);
}

a {
  color: inherit;
}

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

.seo-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  color: #fff3cf;
}

.seo-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 950;
  font-size: 20px;
}

.seo-brand i {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  font-style: normal;
  color: #2a1708;
  background: linear-gradient(135deg, #fff0b9, var(--gold));
}

.seo-nav a {
  text-decoration: none;
  font-size: 14px;
  color: rgba(255, 243, 207, .82);
}

.seo-hero {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 28px;
  align-items: stretch;
  padding: 42px 0 30px;
  color: #fff4cf;
}

.seo-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(244, 213, 138, .28);
  border-radius: 999px;
  color: #ffe19a;
  background: rgba(255, 255, 255, .08);
  font-size: 13px;
  font-weight: 800;
}

.seo-hero h1 {
  margin: 18px 0 16px;
  font-size: clamp(36px, 6vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}

.seo-hero p {
  max-width: 720px;
  margin: 0;
  color: rgba(255, 244, 211, .78);
  font-size: 17px;
  line-height: 1.9;
}

.seo-hero mark,
.seo-section mark {
  padding: 0 4px;
  border-radius: 5px;
  color: #fff1d0;
  background: linear-gradient(135deg, rgba(155, 47, 35, .95), rgba(200, 94, 51, .9));
}

.seo-hero-panel {
  align-self: end;
  padding: 22px;
  border: 1px solid rgba(255, 231, 169, .26);
  border-radius: 22px;
  background: rgba(255, 255, 255, .08);
  box-shadow: 0 24px 60px rgba(18, 10, 4, .18);
}

.seo-hero-panel b {
  display: block;
  margin-bottom: 10px;
  color: #ffe7a9;
  font-size: 20px;
}

.seo-hero-panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.seo-hero-panel li {
  padding: 10px 0;
  border-top: 1px solid rgba(255, 231, 169, .16);
  color: rgba(255, 244, 211, .78);
  line-height: 1.55;
}

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

.seo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 950;
  line-height: 1.2;
}

.seo-btn.primary {
  color: #2a1708;
  background: linear-gradient(135deg, #ffe684, var(--gold));
  box-shadow: 0 16px 34px rgba(0, 0, 0, .18);
}

.seo-btn.ghost {
  color: #fff4cf;
  border: 1px solid rgba(255, 231, 169, .28);
  background: rgba(255, 255, 255, .08);
}

.seo-main {
  display: grid;
  grid-template-columns: 1fr 310px;
  gap: 24px;
  align-items: start;
  padding: 18px 0 56px;
}

.seo-section,
.seo-side {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 250, 240, .96);
  box-shadow: 0 18px 46px rgba(62, 39, 12, .08);
}

.seo-section {
  padding: 26px;
}

.seo-section + .seo-section {
  margin-top: 18px;
}

.seo-section h2 {
  margin: 0 0 12px;
  font-size: 26px;
  line-height: 1.25;
}

.seo-section p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.85;
}

.seo-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.seo-list li,
.seo-note {
  padding: 14px;
  border: 1px solid #eadbc2;
  border-radius: 16px;
  background: #fffdf8;
  color: #5f4527;
  line-height: 1.7;
}

.seo-list strong {
  display: block;
  margin-bottom: 5px;
  color: var(--ink);
}

.seo-note {
  margin-top: 14px;
  border-color: rgba(47, 107, 69, .22);
  background: rgba(47, 107, 69, .07);
}

.seo-side {
  position: sticky;
  top: 20px;
  padding: 20px;
}

.seo-side h2 {
  margin: 0 0 10px;
  font-size: 20px;
}

.seo-side p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 14px;
}

.seo-side-links {
  display: grid;
  gap: 9px;
}

.seo-side-links a {
  display: block;
  padding: 11px 12px;
  border-radius: 14px;
  text-decoration: none;
  color: #553514;
  background: #f5ead8;
  font-weight: 850;
}

.seo-footer {
  padding: 28px 0 38px;
  color: #7a6448;
  font-size: 13px;
  line-height: 1.7;
  text-align: center;
}

@media (max-width: 900px) {
  .seo-hero,
  .seo-main {
    grid-template-columns: 1fr;
  }

  .seo-side {
    position: static;
  }
}

@media (max-width: 620px) {
  .seo-shell {
    width: min(100% - 22px, 1120px);
  }

  .seo-nav {
    align-items: flex-start;
  }

  .seo-hero {
    padding-top: 28px;
  }

  .seo-hero h1 {
    font-size: 34px;
  }

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

  .seo-section {
    padding: 20px;
  }

  .seo-actions {
    display: grid;
  }
}