:root {
  color: #14213d;
  background: #f6f8fc;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  line-height: 1.65;
}

* { box-sizing: border-box; }
body { margin: 0; color: #17233f; }
a { color: #174ea6; }
.seo-header { background: #fff; border-bottom: 1px solid #dde4ef; }
.seo-header-inner, .seo-main, .seo-footer-inner { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.seo-header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.seo-brand { color: #14213d; font-size: 1.08rem; font-weight: 800; text-decoration: none; }
.seo-nav { display: flex; align-items: center; gap: 20px; }
.seo-nav a { color: #34415d; font-weight: 650; text-decoration: none; }
.seo-nav .seo-button, .seo-button { display: inline-block; border-radius: 9px; padding: 10px 17px; color: #fff; background: #2457d6; text-decoration: none; font-weight: 750; }
.seo-main { padding: 56px 0 72px; }
.seo-breadcrumbs { margin-bottom: 24px; color: #5d6880; font-size: .94rem; }
.seo-breadcrumbs a { color: #4d5971; }
.seo-hero { padding: 46px; border: 1px solid #dce4f1; border-radius: 22px; background: linear-gradient(135deg, #fff 0%, #edf3ff 100%); box-shadow: 0 18px 50px rgba(42, 69, 125, .08); }
.seo-eyebrow { margin: 0 0 8px; color: #2457d6; font-size: .82rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
h1 { max-width: 850px; margin: 0; color: #101a31; font-size: clamp(2.25rem, 5vw, 4rem); line-height: 1.08; letter-spacing: -.035em; }
.seo-lead { max-width: 820px; margin: 22px 0 0; color: #46536d; font-size: 1.16rem; }
.seo-updated { margin: 18px 0 0; color: #667187; font-size: .9rem; }
.seo-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 42px; margin-top: 48px; align-items: start; }
.seo-article { min-width: 0; }
.seo-article h2 { margin: 46px 0 13px; color: #111c35; font-size: 1.85rem; line-height: 1.25; }
.seo-article h2:first-child { margin-top: 0; }
.seo-article h3 { margin: 28px 0 8px; color: #172747; font-size: 1.25rem; }
.seo-article p, .seo-article li { color: #3d4961; }
.seo-article li + li { margin-top: 8px; }
.seo-summary { padding: 22px 24px; border-left: 4px solid #2457d6; border-radius: 0 12px 12px 0; background: #edf3ff; }
.seo-summary strong { color: #172747; }
.seo-section-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 22px 0; }
.seo-card { padding: 22px; border: 1px solid #dce4ef; border-radius: 14px; background: #fff; }
.seo-card h3 { margin-top: 0; }
.seo-card p { margin-bottom: 0; }
.seo-aside { position: sticky; top: 24px; padding: 22px; border: 1px solid #dce4ef; border-radius: 14px; background: #fff; }
.seo-aside strong { display: block; margin-bottom: 10px; }
.seo-aside a { display: block; padding: 5px 0; text-decoration: none; }
.seo-cta { margin-top: 50px; padding: 34px; border-radius: 18px; color: #fff; background: #162d67; }
.seo-cta h2 { margin-top: 0; color: #fff; }
.seo-cta p { color: #e7edff; }
.seo-cta p a { color: #fff; font-weight: 750; text-decoration-thickness: 2px; }
.seo-cta .seo-button { background: #fff; color: #163c9a; }
.seo-faq details { margin: 12px 0; padding: 17px 20px; border: 1px solid #dce4ef; border-radius: 12px; background: #fff; }
.seo-faq summary { color: #172747; cursor: pointer; font-weight: 750; }
.seo-faq details p { margin-bottom: 0; }
.seo-source-note { padding-top: 18px; border-top: 1px solid #dce4ef; font-size: .92rem; }
.seo-process { padding-left: 24px; }
.seo-process li { margin-bottom: 15px; padding-left: 8px; }
.seo-date-table-wrap { overflow-x: auto; margin: 24px 0; border: 1px solid #dce4ef; border-radius: 14px; background: #fff; }
.seo-date-table { width: 100%; border-collapse: collapse; }
.seo-date-table caption { padding: 18px 20px; color: #172747; font-weight: 750; text-align: left; }
.seo-date-table th, .seo-date-table td { padding: 13px 20px; border-top: 1px solid #e3e9f2; text-align: left; vertical-align: top; }
.seo-date-table th { color: #172747; background: #f3f6fc; }
.seo-date-table td:last-child { white-space: nowrap; }
.sample-passage { margin: 22px 0 28px; padding: 24px 28px; border: 1px solid #dce4ef; border-radius: 14px; background: #fff; }
.sample-passage h3 { margin-top: 0; }
.sample-question-list { display: grid; gap: 18px; margin: 22px 0 34px; }
.sample-question-card { padding: 24px; border: 1px solid #dce4ef; border-radius: 14px; background: #fff; box-shadow: 0 8px 24px rgba(42, 69, 125, .05); }
.sample-question-card h3 { margin: 5px 0 14px; font-size: 1.13rem; }
.sample-question-label { margin: 0; color: #2457d6 !important; font-size: .78rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.sample-options { margin: 14px 0 20px; padding-left: 30px; }
.sample-options li { padding-left: 5px; }
.sample-answer { padding: 14px 16px; border-radius: 10px; background: #edf3ff; }
.sample-answer summary { color: #173c95; cursor: pointer; font-weight: 750; }
.sample-answer p { margin-bottom: 0; }
.sample-figure { overflow: hidden; margin: 16px 0 20px; border: 1px solid #d8e0ed; border-radius: 14px; background: linear-gradient(145deg, #fbfdff, #f2f6fc); }
.sample-figure svg { display: block; width: 100%; height: auto; }
.sample-figure .figure-heading { fill: #162d67; font-size: 21px; font-weight: 800; }
.sample-figure .figure-label { fill: #263858; font-size: 17px; font-weight: 700; }
.sample-figure .figure-small { fill: #4c5b74; font-size: 16px; font-weight: 650; }
.sample-figure .figure-step { fill: #657189; font-size: 14px; font-weight: 800; }
.sample-figure .figure-symbol { fill: #162d67; font-size: 42px; font-weight: 800; }
.sample-figure .figure-arrow { fill: #162d67; font-size: 52px; font-weight: 800; }
.sample-figure .figure-question-mark { fill: #2457d6; font-size: 45px; font-weight: 850; }
.sample-figure .figure-answer-target { fill: #2457d6; font-size: 25px; font-weight: 850; letter-spacing: .08em; }
.sample-writing-focus { margin-top: 16px; padding: 14px 16px; border-left: 4px solid #2457d6; border-radius: 0 9px 9px 0; color: #3d4961; background: #f3f6fc; }
.category-example { margin: 22px 0 34px; padding: 26px; border: 1px solid #dce4ef; border-radius: 16px; background: #fff; box-shadow: 0 8px 24px rgba(42, 69, 125, .05); }
.category-example h3 { margin-top: 0; }
.category-example blockquote { margin: 18px 0; padding: 20px 22px; border-left: 4px solid #2457d6; background: #f3f6fc; color: #2d3b57; font-style: italic; }
.percentage-bar { display: grid; grid-template-columns: 35fr 35fr 30fr; overflow: hidden; margin: 22px 0; border: 1px solid #ccd7e8; border-radius: 10px; text-align: center; }
.percentage-bar span, .percentage-bar strong, .percentage-bar i { display: flex; min-height: 76px; padding: 10px; align-items: center; justify-content: center; font-style: normal; }
.percentage-bar span { background: #dbe7ff; color: #183f99; }.percentage-bar strong { background: #2457d6; color: #fff; }.percentage-bar i { background: #eef2f8; color: #56637a; }
.pattern-sequence, .writing-prompt-visual { display: flex; margin: 22px 0; padding: 25px 18px; align-items: center; justify-content: space-around; gap: 12px; border-radius: 12px; background: linear-gradient(145deg, #f6f9ff, #eaf1ff); color: #162d67; }
.pattern-sequence span { min-width: 90px; font-size: clamp(1.35rem, 3vw, 2rem); font-weight: 800; text-align: center; letter-spacing: .12em; }.pattern-sequence b { color: #6b7891; }
.writing-prompt-visual span { padding: 18px; border-radius: 10px; background: #fff; font-weight: 750; text-align: center; }.writing-prompt-visual .prompt-bridge { color: #fff; background: #2457d6; }.writing-prompt-visual b { font-size: 1.5rem; }
.category-steps { padding-left: 24px; }.category-steps li { padding-left: 8px; margin-bottom: 14px; }
.seo-footer { padding: 30px 0; border-top: 1px solid #dce4ef; background: #fff; }
.seo-footer-inner { display: flex; justify-content: space-between; gap: 24px; color: #5c6780; }
.seo-footer a { margin-left: 16px; color: #45516a; }
@media (max-width: 800px) {
  .seo-header-inner { padding: 14px 0; align-items: flex-start; }
  .seo-nav { gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
  .seo-nav > a:not(.seo-button) { display: none; }
  .seo-main { padding-top: 28px; }
  .seo-hero { padding: 28px 24px; }
  .seo-layout { grid-template-columns: 1fr; }
  .seo-aside { position: static; grid-row: 1; }
  .seo-section-grid { grid-template-columns: 1fr; }
  .seo-footer-inner { flex-direction: column; }
  .percentage-bar { grid-template-columns: 1fr; }
  .percentage-bar span, .percentage-bar strong, .percentage-bar i { min-height: 52px; }
  .pattern-sequence, .writing-prompt-visual { flex-wrap: wrap; }
  .seo-date-table td:last-child { white-space: normal; }
}