.seo-body { background: #090a0c; }
.seo-hero { position: relative; display: flex; align-items: flex-end; min-height: 92svh; padding: 160px 0 78px; isolation: isolate; overflow: hidden; }
.seo-hero > img { position: absolute; inset: 0; z-index: -3; width: 100%; height: 100%; object-fit: cover; }
.seo-hero-shade { position: absolute; inset: 0; z-index: -2; background: linear-gradient(90deg,rgba(4,5,6,.97) 0%,rgba(4,5,6,.77) 48%,rgba(4,5,6,.28) 100%),linear-gradient(0deg,rgba(4,5,6,.94),transparent 56%); }
.seo-hero-content { position: relative; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 70px; color: #a9acb0; font-size: .76rem; }
.breadcrumbs a:hover { color: var(--accent-bright); }
.breadcrumbs span:last-child { color: #d7d8d9; }
.seo-hero h1 { max-width: 1180px; margin: 0; font-size: clamp(3.8rem,8.1vw,8.8rem); font-weight: 460; letter-spacing: -.075em; line-height: .86; }
.seo-hero h1 span { color: var(--accent-bright); }
.seo-hero-lead { max-width: 760px; margin: 36px 0 0; color: #d2d3d4; font-size: clamp(1.05rem,1.6vw,1.35rem); }
.seo-intro-grid { display: grid; grid-template-columns: 1.18fr .82fr; align-items: start; gap: clamp(50px,9vw,150px); }
.seo-intro h2, .seo-block h2, .seo-criteria h2, .seo-result h2, .seo-faq h2 { margin: 0; font-size: clamp(2.8rem,5.8vw,6.6rem); font-weight: 430; letter-spacing: -.065em; line-height: .95; }
.seo-rich { max-width: 650px; color: #b6b8bb; font-size: 1.04rem; }
.seo-rich p { margin: 0 0 24px; }
.seo-block { border-block: 1px solid var(--line); background: #0d0f12; }
.seo-card-grid { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.seo-card { min-height: 300px; padding: clamp(26px,4vw,54px); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: linear-gradient(145deg,rgba(255,255,255,.025),transparent); }
.seo-card > span, .seo-criteria-list article > span { color: var(--accent); font-size: .73rem; letter-spacing: .14em; }
.seo-card h3 { max-width: 520px; margin: 75px 0 16px; font-size: clamp(1.55rem,2.5vw,2.7rem); font-weight: 500; letter-spacing: -.045em; line-height: 1.02; }
.seo-card p { max-width: 560px; margin: 0; color: #999ca1; }
.seo-criteria-list { border-top: 1px solid var(--line); }
.seo-criteria-list article { display: grid; grid-template-columns: 50px .65fr 1fr; align-items: start; gap: 28px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.seo-criteria-list h3 { margin: 0; font-size: clamp(1.35rem,2.1vw,2.15rem); font-weight: 500; letter-spacing: -.04em; }
.seo-criteria-list p { max-width: 700px; margin: 3px 0 0; color: #9fa2a6; }
.seo-result { background: radial-gradient(circle at 20% 20%,rgba(255,138,31,.11),transparent 34%),#111318; }
.seo-result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px,9vw,150px); }
.seo-result ol { margin: 0; padding: 0; list-style: none; counter-reset: result; border-top: 1px solid var(--line); }
.seo-result li { counter-increment: result; position: relative; padding: 25px 0 25px 58px; border-bottom: 1px solid var(--line); color: #d5d6d7; font-size: 1.02rem; }
.seo-result li::before { content: counter(result,decimal-leading-zero); position: absolute; left: 0; color: var(--accent); font-size: .72rem; letter-spacing: .12em; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; justify-content: space-between; gap: 24px; padding: 28px 0; cursor: pointer; font-size: clamp(1.15rem,2vw,1.65rem); font-weight: 500; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--accent); font-size: 1.6rem; font-weight: 300; transition: transform .25s; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { max-width: 850px; margin: -6px 0 30px; color: #a9acb0; }
.seo-related { padding-block: 70px; border-top: 1px solid var(--line); }
.seo-related .section-index { margin-bottom: 18px; }
.seo-related > div { display: flex; flex-wrap: wrap; gap: 8px; }
.seo-related a { padding: 10px 14px; border: 1px solid var(--line); border-radius: 40px; color: #cacbcd; font-size: .8rem; transition: color .2s,border-color .2s,background .2s; }
.seo-related a:hover, .seo-related a:focus-visible { color: #111317; border-color: var(--accent-bright); background: var(--accent-bright); }

@media (max-width: 900px) {
  .seo-intro-grid, .seo-result-grid { grid-template-columns: 1fr; }
  .seo-criteria-list article { grid-template-columns: 42px 1fr; }
  .seo-criteria-list p { grid-column: 2; }
}

@media (max-width: 720px) {
  .seo-hero { min-height: 760px; padding: 120px 0 58px; }
  .breadcrumbs { margin-bottom: 48px; }
  .seo-hero h1 { font-size: clamp(3.2rem,16vw,5.2rem); }
  .seo-card-grid { grid-template-columns: 1fr; }
  .seo-card { min-height: 260px; }
  .seo-card h3 { margin-top: 55px; }
  .seo-criteria-list article { gap: 18px; }
}