.seo-body { min-height: 100vh; background: #f8faff; }
.seo-shell { overflow: hidden; }
.seo-container { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.seo-nav { width: min(1120px, calc(100% - 40px)); min-height: 78px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.seo-nav .brand-logo-crop { width: 126px; height: 60px; }
.seo-nav .brand-logo-crop img { width: 126px; height: 126px; }
.seo-nav-links { display: flex; align-items: center; gap: 22px; margin-left: auto; color: #647590; font-size: 12px; }
.seo-nav-links a { transition: color .2s ease; }
.seo-nav-links a:hover { color: var(--blue); }
.seo-nav-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 0 15px; border-radius: 999px; color: #fff; background: var(--blue); font-size: 11px; font-weight: 800; box-shadow: 0 9px 18px rgba(28, 98, 231, .16); }
.seo-nav-cta:hover { background: var(--blue-deep); }
.seo-breadcrumb { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; margin-top: 21px; color: #8e9bb0; font-size: 11px; }
.seo-breadcrumb a { color: #5e80bd; }
.seo-hero { padding: 65px 0 67px; }
.seo-hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(280px, .92fr); gap: 58px; align-items: center; }
.seo-kicker { display: inline-flex; align-items: center; gap: 8px; color: #5f81bd; font-size: 10px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.seo-kicker::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 0 5px #e3f7f8; }
.seo-hero h1 { max-width: 760px; margin: 16px 0 17px; color: var(--ink); font-size: clamp(38px, 5vw, 62px); line-height: 1.03; letter-spacing: -.065em; }
.seo-hero h1 span { color: var(--blue); }
.seo-lead { max-width: 680px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.seo-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 26px; }
.seo-button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 18px; border-radius: 999px; color: #fff; background: var(--blue); font-size: 12px; font-weight: 800; box-shadow: 0 11px 22px rgba(28, 98, 231, .17); }
.seo-button:hover { background: var(--blue-deep); transform: translateY(-1px); }
.seo-button-secondary { color: var(--ink-soft); background: #fff; border: 1px solid #dfe7f2; box-shadow: none; }
.seo-button-secondary:hover { color: var(--blue); background: #f2f7ff; }
.seo-hero-card { position: relative; min-height: 280px; display: grid; place-items: center; overflow: hidden; padding: 28px; border: 1px solid #dce9ff; border-radius: 28px; background: linear-gradient(145deg, #edf5ff, #f7fffd); box-shadow: 0 24px 55px rgba(31, 84, 161, .1); }
.seo-hero-card::before, .seo-hero-card::after { content: ""; position: absolute; border: 1px solid rgba(28, 98, 231, .12); border-radius: 50%; }
.seo-hero-card::before { width: 310px; height: 310px; top: -180px; right: -100px; }
.seo-hero-card::after { width: 260px; height: 260px; bottom: -160px; left: -100px; }
.seo-hero-card img { position: relative; z-index: 1; width: min(84%, 270px); height: auto; max-height: 190px; object-fit: contain; mix-blend-mode: multiply; }
.seo-hero-card-note { position: absolute; z-index: 2; right: 21px; bottom: 20px; display: grid; gap: 2px; padding: 10px 12px; border: 1px solid rgba(255,255,255,.85); border-radius: 11px; background: rgba(255,255,255,.9); box-shadow: 0 11px 25px rgba(36, 82, 145, .1); }
.seo-hero-card-note strong { color: var(--ink); font-size: 11px; }
.seo-hero-card-note span { color: #8d9bb0; font-size: 9px; }
.seo-section { padding: 75px 0; border-top: 1px solid var(--line); }
.seo-section-alt { background: #fff; }
.seo-section-heading { max-width: 700px; margin-bottom: 31px; }
.seo-section-heading h2 { margin: 11px 0 10px; color: var(--ink); font-size: clamp(28px, 3.4vw, 43px); line-height: 1.08; letter-spacing: -.055em; }
.seo-section-heading p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.seo-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.seo-card { min-height: 180px; padding: 22px; border: 1px solid #e2e9f3; border-radius: 17px; background: #fff; box-shadow: 0 9px 24px rgba(37, 71, 123, .045); }
.seo-card h3 { margin: 0 0 8px; color: var(--ink); font-size: 17px; letter-spacing: -.03em; }
.seo-card p { margin: 0; color: #71809a; font-size: 12px; line-height: 1.7; }
.seo-card a { display: inline-flex; margin-top: 14px; color: var(--blue); font-size: 11px; font-weight: 800; }
.seo-card-accent { background: linear-gradient(145deg, #eef5ff, #fff); border-color: #d8e6ff; }
.seo-two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: 42px; align-items: start; }
.seo-copy p, .seo-copy li { color: #6e7d96; font-size: 14px; line-height: 1.8; }
.seo-copy p { margin: 0 0 15px; }
.seo-copy h2 { margin: 0 0 11px; color: var(--ink); font-size: 29px; letter-spacing: -.045em; }
.seo-copy h3 { margin: 24px 0 7px; color: var(--ink); font-size: 18px; }
.seo-copy ul, .seo-copy ol { padding-left: 21px; margin: 10px 0 20px; }
.seo-callout { padding: 23px; border: 1px solid #d9e7ff; border-radius: 17px; background: #eef5ff; }
.seo-callout strong { display: block; color: var(--ink); font-size: 16px; }
.seo-callout p { margin: 7px 0 0; color: #6d7f9e; font-size: 13px; line-height: 1.7; }
.seo-link-list { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.seo-link-list a { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 13px 15px; border: 1px solid #e3eaf3; border-radius: 11px; color: #526783; background: #fff; font-size: 12px; font-weight: 700; }
.seo-link-list a::after { content: "↗"; color: var(--blue); }
.seo-faq { display: grid; gap: 9px; max-width: 820px; }
.seo-faq-item { border: 1px solid #e2e9f2; border-radius: 12px; background: #fff; }
.seo-faq-item summary { cursor: pointer; padding: 16px 18px; color: var(--ink); font-size: 13px; font-weight: 800; list-style: none; }
.seo-faq-item summary::-webkit-details-marker { display: none; }
.seo-faq-item summary::after { content: "+"; float: right; color: var(--blue); font-size: 17px; line-height: 1; }
.seo-faq-item[open] summary::after { content: "−"; }
.seo-faq-answer { padding: 0 18px 17px; color: #71809a; font-size: 12px; line-height: 1.75; }
.seo-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; counter-reset: seo-step; }
.seo-step { position: relative; padding: 24px 21px; border: 1px solid #e1e8f2; border-radius: 16px; background: #fff; }
.seo-step::before { counter-increment: seo-step; content: "0" counter(seo-step); display: block; margin-bottom: 15px; color: #9aacc7; font-size: 11px; font-weight: 900; letter-spacing: .1em; }
.seo-step h3 { margin: 0 0 7px; color: var(--ink); font-size: 16px; }
.seo-step p { margin: 0; color: #73829b; font-size: 12px; line-height: 1.7; }
.seo-cta { padding: 48px 28px; border-radius: 23px; color: #fff; text-align: center; background: linear-gradient(115deg, #124bc7, #1e72e8); box-shadow: 0 24px 50px rgba(24, 91, 203, .17); }
.seo-cta h2 { margin: 0 0 9px; color: #fff; font-size: clamp(28px, 4vw, 44px); letter-spacing: -.055em; }
.seo-cta p { max-width: 590px; margin: 0 auto 20px; color: #cfe0ff; font-size: 13px; line-height: 1.65; }
.seo-cta .seo-button { color: var(--blue); background: #fff; box-shadow: none; }
.seo-footer { margin-top: 18px; padding: 37px 0 27px; border-top: 1px solid var(--line); }
.seo-footer-grid { display: grid; grid-template-columns: 1.1fr .9fr 1fr; gap: 28px; }
.seo-footer-brand p { max-width: 260px; margin: 10px 0 0; color: #8997aa; font-size: 11px; line-height: 1.65; }
.seo-footer h2 { margin: 0 0 10px; color: #8491a4; font-size: 10px; letter-spacing: .11em; text-transform: uppercase; }
.seo-footer-links { display: grid; gap: 7px; }
.seo-footer-links a { color: #63738c; font-size: 11px; }
.seo-footer-links a:hover { color: var(--blue); }
.seo-footer-bottom { display: flex; justify-content: space-between; gap: 15px; margin-top: 29px; padding-top: 15px; border-top: 1px solid var(--line); color: #a1adbc; font-size: 10px; }
.seo-article-hero { padding: 48px 0 33px; }
.seo-article-hero h1 { max-width: 820px; margin: 14px 0 11px; color: var(--ink); font-size: clamp(35px, 5vw, 58px); line-height: 1.04; letter-spacing: -.065em; }
.seo-article-meta { color: #8c9aaf; font-size: 11px; }
.seo-article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 44px; align-items: start; padding-bottom: 74px; }
.seo-article { min-width: 0; max-width: 780px; padding: 30px 0; }
.seo-article h2 { margin: 31px 0 9px; color: var(--ink); font-size: 27px; letter-spacing: -.045em; }
.seo-article h3 { margin: 22px 0 7px; color: var(--ink); font-size: 18px; }
.seo-article p, .seo-article li { color: #687993; font-size: 14px; line-height: 1.85; }
.seo-article p { margin: 0 0 15px; }
.seo-article ul, .seo-article ol { margin: 11px 0 18px; padding-left: 22px; }
.seo-article blockquote { margin: 23px 0; padding: 18px 20px; border-left: 4px solid var(--blue); border-radius: 0 12px 12px 0; color: #526c95; background: #eef5ff; font-size: 14px; line-height: 1.75; }
.seo-toc { position: sticky; top: 20px; padding: 18px; border: 1px solid #e2e9f3; border-radius: 15px; background: #fff; }
.seo-toc strong { display: block; margin-bottom: 10px; color: var(--ink); font-size: 12px; }
.seo-toc a { display: block; padding: 5px 0; color: #6e82a2; font-size: 11px; line-height: 1.45; }
.seo-toc a:hover { color: var(--blue); }
.seo-blog-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.seo-blog-card { display: flex; flex-direction: column; min-height: 210px; padding: 22px; border: 1px solid #e2e9f3; border-radius: 17px; background: #fff; }
.seo-blog-card small { color: #91a0b4; font-size: 10px; }
.seo-blog-card h2 { margin: 8px 0; color: var(--ink); font-size: 19px; line-height: 1.2; letter-spacing: -.04em; }
.seo-blog-card p { margin: 0; color: #71809a; font-size: 12px; line-height: 1.7; }
.seo-blog-card a { margin-top: auto; padding-top: 14px; color: var(--blue); font-size: 11px; font-weight: 800; }
.seo-not-found { min-height: 65vh; display: grid; place-items: center; padding: 70px 0; text-align: center; }
.seo-not-found h1 { margin: 14px 0 9px; color: var(--ink); font-size: clamp(38px, 6vw, 65px); letter-spacing: -.06em; }
.seo-not-found p { max-width: 510px; margin: 0 auto; color: #71809a; font-size: 14px; line-height: 1.75; }
.seo-skip { position: absolute; left: -9999px; }
.seo-skip:focus { left: 15px; top: 15px; z-index: 50; padding: 9px 12px; border-radius: 8px; color: #fff; background: var(--blue); }

@media (max-width: 850px) {
  .seo-nav-links { display: none; }
  .seo-hero-grid, .seo-two-col, .seo-article-layout { grid-template-columns: 1fr; gap: 28px; }
  .seo-hero { padding-top: 42px; }
  .seo-hero-card { min-height: 235px; }
  .seo-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .seo-toc { position: static; order: -1; }
  .seo-footer-grid { grid-template-columns: 1fr 1fr; }
  .seo-footer-brand { grid-column: span 2; }
}

@media (max-width: 560px) {
  .seo-container, .seo-nav { width: calc(100% - 32px); }
  .seo-nav { min-height: 70px; }
  .seo-nav .brand-logo-crop { width: 112px; height: 57px; }
  .seo-nav .brand-logo-crop img { width: 112px; height: 112px; }
  .seo-nav-cta { min-height: 35px; padding-inline: 11px; font-size: 10px; }
  .seo-hero { padding: 36px 0 51px; }
  .seo-hero h1 { font-size: 42px; }
  .seo-lead { font-size: 15px; }
  .seo-card-grid, .seo-steps, .seo-blog-grid { grid-template-columns: 1fr; }
  .seo-section { padding: 55px 0; }
  .seo-footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .seo-footer-brand { grid-column: auto; }
  .seo-footer-bottom { align-items: flex-start; flex-direction: column; gap: 6px; }
  .seo-article-hero { padding-top: 33px; }
  .seo-article h2 { font-size: 24px; }
}