:root {
  color-scheme: dark;
  --seo-bg: #080c18;
  --seo-panel: #11182a;
  --seo-panel-strong: #171f35;
  --seo-line: rgba(224, 198, 133, 0.24);
  --seo-text: #f7f2e8;
  --seo-muted: #b5b7c4;
  --seo-gold: #e8c88a;
  --seo-lavender: #c5b9e8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--seo-text);
  background:
    radial-gradient(circle at 80% 0%, rgba(102, 83, 155, 0.2), transparent 34rem),
    var(--seo-bg);
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.75;
}

a { color: inherit; }

.seo-shell { width: min(100% - 40px, 1080px); margin: 0 auto; }

.seo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.seo-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--seo-gold);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.4rem;
  font-weight: 700;
  text-decoration: none;
}

.seo-brand span { color: var(--seo-muted); font-family: inherit; font-size: 0.62rem; letter-spacing: 0.16em; }

.seo-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 14px 20px; color: var(--seo-muted); font-size: 0.9rem; }
.seo-nav a { text-decoration: none; }
.seo-nav a:hover, .seo-nav a:focus-visible { color: var(--seo-gold); }

.seo-main { padding: 26px 0 88px; }
.seo-breadcrumb { color: var(--seo-muted); font-size: 0.84rem; }
.seo-breadcrumb a { color: var(--seo-gold); text-decoration: none; }

.seo-hero { padding: 68px 0 54px; max-width: 820px; }
.seo-kicker { margin: 0 0 16px; color: var(--seo-gold); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.15em; }
.seo-hero h1 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.4rem, 6vw, 5rem); font-weight: 500; line-height: 1.12; }
.seo-hero h1 em, .seo-section h2 em { color: var(--seo-gold); font-style: normal; }
.seo-answer { max-width: 720px; margin: 26px 0 0; color: #d7d4da; font-size: 1.16rem; }
.seo-button { display: inline-flex; align-items: center; gap: 12px; margin-top: 28px; padding: 13px 20px; color: #181323; background: var(--seo-gold); border-radius: 999px; font-weight: 700; text-decoration: none; }
.seo-button:hover, .seo-button:focus-visible { filter: brightness(1.08); }

.seo-section { margin-top: 28px; padding: 34px; border: 1px solid var(--seo-line); border-radius: 20px; background: rgba(17, 24, 42, 0.82); }
.seo-section h2 { margin: 0 0 16px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.65rem, 3vw, 2.45rem); font-weight: 500; line-height: 1.25; }
.seo-section h3 { margin: 26px 0 8px; color: var(--seo-lavender); font-size: 1.1rem; }
.seo-section p { margin: 10px 0; color: var(--seo-muted); }
.seo-section strong { color: var(--seo-text); }

.seo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.seo-card { padding: 24px; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 14px; background: rgba(8, 12, 24, 0.58); }
.seo-card h3 { margin-top: 0; }
.seo-card p { margin-bottom: 0; }
.seo-list { display: grid; gap: 11px; margin: 16px 0 0; padding-left: 20px; color: var(--seo-muted); }
.seo-list strong { color: var(--seo-text); }

.seo-faq { display: grid; gap: 10px; }
.seo-faq details { padding: 17px 18px; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 12px; background: rgba(8, 12, 24, 0.52); }
.seo-faq summary { cursor: pointer; color: var(--seo-text); font-weight: 700; }
.seo-faq p { margin: 12px 0 0; }

.seo-note { margin-top: 24px; padding: 18px 20px; border-left: 3px solid var(--seo-gold); background: rgba(232, 200, 138, 0.08); }
.seo-note p { margin: 0; }
.seo-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--seo-muted); font-size: 0.88rem; }
.seo-meta strong { color: var(--seo-gold); }

.seo-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; padding: 24px 0 46px; border-top: 1px solid rgba(255, 255, 255, 0.08); color: var(--seo-muted); font-size: 0.85rem; }
.seo-footer nav { display: flex; flex-wrap: wrap; gap: 12px 18px; }
.seo-footer a { color: var(--seo-muted); text-decoration: none; }
.seo-footer a:hover, .seo-footer a:focus-visible { color: var(--seo-gold); }

@media (max-width: 700px) {
  .seo-shell { width: min(100% - 28px, 1080px); }
  .seo-header { align-items: flex-start; flex-direction: column; gap: 14px; }
  .seo-nav { justify-content: flex-start; gap: 10px 16px; }
  .seo-main { padding-top: 18px; }
  .seo-hero { padding: 48px 0 32px; }
  .seo-section { padding: 24px 20px; border-radius: 16px; }
  .seo-grid { grid-template-columns: 1fr; }
  .seo-answer { font-size: 1.03rem; }
}