:root {
    color-scheme: light;
    --ink: #203037;
    --muted: #657277;
    --paper: #f4f0e6;
    --panel: #fffdf8;
    --line: #d7c9ad;
    --accent: #6b3fa0;
    --accent-dark: #4c276f;
    --sage: #4d6b3d;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 8% 12%, rgba(107, 63, 160, 0.1), transparent 24rem),
        radial-gradient(circle at 92% 4%, rgba(77, 107, 61, 0.12), transparent 27rem),
        var(--paper);
}

a { color: inherit; }

.seo-shell {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
}

.seo-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 86px;
    border-bottom: 1px solid rgba(123, 87, 48, 0.18);
}

.seo-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    font-weight: 900;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.seo-brand__mark {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border-radius: 11px;
    background: var(--ink);
    color: #fffaf0;
    font-family: Georgia, serif;
}

.seo-nav {
    display: flex;
    align-items: center;
    gap: clamp(12px, 2vw, 26px);
}

.seo-nav a {
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 750;
    text-decoration: none;
}

.seo-nav .seo-nav__app {
    padding: 10px 15px;
    border-radius: 999px;
    background: var(--ink);
    color: white;
}

.seo-hero {
    max-width: 900px;
    padding: clamp(64px, 10vw, 126px) 0 clamp(54px, 8vw, 96px);
}

.seo-eyebrow,
.seo-kicker {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.seo-hero h1 {
    max-width: 18ch;
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2.8rem, 8vw, 6.7rem);
    font-weight: 500;
    letter-spacing: -0.055em;
    line-height: 0.93;
}

.seo-hero__intro {
    max-width: 68ch;
    margin: 26px 0 0;
    color: var(--muted);
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    line-height: 1.65;
}

.seo-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.seo-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border: 1px solid var(--accent);
    border-radius: 999px;
    background: var(--accent);
    color: white;
    font-weight: 850;
    text-decoration: none;
}

.seo-button:hover { background: var(--accent-dark); }

.seo-button--secondary {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.5);
    color: var(--ink);
}

.seo-section {
    margin-bottom: clamp(64px, 10vw, 126px);
}

.seo-section--split {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(420px, 1.2fr);
    gap: clamp(32px, 7vw, 92px);
    align-items: start;
}

.seo-section__heading { max-width: 680px; }

.seo-section__heading h2,
.seo-section--callout h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2rem, 4.5vw, 4.1rem);
    font-weight: 500;
    letter-spacing: -0.04em;
    line-height: 1.02;
}

.seo-section__heading > p:not(.seo-kicker),
.seo-section--callout p {
    margin: 18px 0 0;
    color: var(--muted);
    line-height: 1.7;
}

.seo-card-grid {
    display: grid;
    gap: 18px;
    margin-top: 34px;
}

.seo-card-grid--feature { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.seo-card-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.seo-card {
    padding: clamp(22px, 3.5vw, 36px);
    border: 1px solid rgba(123, 87, 48, 0.2);
    border-radius: 24px;
    background: rgba(255, 253, 248, 0.72);
    box-shadow: 0 20px 60px rgba(38, 51, 58, 0.06);
}

.seo-card--accent { background: #203037; color: #fffaf0; }
.seo-card--accent .seo-card__meta,
.seo-card--accent p { color: #c9d0cf; }

.seo-card__glyph {
    display: block;
    margin-bottom: 24px;
    color: #dbc7f2;
    font-family: Georgia, serif;
    font-size: 4rem;
}

.seo-card__meta {
    margin: 0 0 12px;
    color: var(--sage);
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.seo-card h3 {
    margin: 0;
    font-family: Georgia, serif;
    font-size: 1.55rem;
    line-height: 1.15;
}

.seo-card p:not(.seo-card__meta) {
    margin: 14px 0 0;
    color: var(--muted);
    line-height: 1.65;
}

.seo-text-link {
    display: inline-block;
    margin-top: 22px;
    color: var(--accent);
    font-weight: 850;
    text-decoration-thickness: 1px;
    text-underline-offset: 4px;
}

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

.seo-process--three { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 34px; }

.seo-process li {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 18px;
    padding: 22px;
    border-top: 1px solid var(--line);
}

.seo-process--three li { grid-template-columns: 1fr; }

.seo-process li > span {
    color: var(--accent);
    font-family: Georgia, serif;
    font-size: 1.3rem;
}

.seo-process h3 { margin: 0; font-size: 1.05rem; }
.seo-process p { margin: 7px 0 0; color: var(--muted); line-height: 1.55; }

.seo-facts {
    display: grid;
    gap: 0;
    margin: 30px 0 0;
}

.seo-facts div {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 13px 0;
    border-top: 1px solid var(--line);
}

.seo-facts dt { color: var(--muted); }
.seo-facts dd { margin: 0; font-weight: 850; text-align: right; }

.seo-sample-card {
    padding: clamp(26px, 5vw, 54px);
    border-radius: 28px;
    background: var(--ink);
    color: white;
}

.seo-word-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 22px 0;
    padding: 0;
    list-style: none;
}

.seo-word-list li {
    padding: 8px 12px;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 999px;
    background: rgba(255,255,255,.08);
}

.seo-sample-card > p:last-child { color: #c9d0cf; line-height: 1.65; }

.seo-section--callout {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    padding: clamp(28px, 5vw, 58px);
    border: 1px solid var(--line);
    border-radius: 30px;
    background: rgba(255, 253, 248, 0.62);
}

.seo-section--callout > div { max-width: 720px; }
.seo-section--callout .seo-button { flex: 0 0 auto; }

.seo-faq { max-width: 820px; }
.seo-faq details { border-top: 1px solid var(--line); padding: 20px 0; }
.seo-faq summary { cursor: pointer; font-weight: 850; }
.seo-faq details p { color: var(--muted); line-height: 1.65; }

.seo-footer {
    display: flex;
    justify-content: space-between;
    gap: 32px;
    padding: 38px 0 54px;
    border-top: 1px solid var(--line);
}

.seo-footer p { max-width: 48ch; color: var(--muted); line-height: 1.5; }
.seo-footer nav { display: flex; flex-wrap: wrap; align-content: flex-start; gap: 16px 24px; }
.seo-footer nav a { color: var(--muted); font-size: 0.9rem; font-weight: 700; }

@media (max-width: 900px) {
    .seo-section--split { grid-template-columns: 1fr; }
    .seo-card-grid--three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .seo-process--three { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .seo-shell { width: min(100% - 22px, 1180px); }
    .seo-header { align-items: flex-start; padding: 18px 0; }
    .seo-nav { justify-content: flex-end; flex-wrap: wrap; gap: 9px 14px; }
    .seo-nav a:not(.seo-nav__app) { font-size: 0.82rem; }
    .seo-hero { padding-top: 56px; }
    .seo-hero h1 { font-size: clamp(2.6rem, 15vw, 4.4rem); }
    .seo-card-grid--feature,
    .seo-card-grid--three { grid-template-columns: 1fr; }
    .seo-section--callout,
    .seo-footer { align-items: flex-start; flex-direction: column; }
    .seo-section--callout .seo-button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}