/* SEO AI V3.1 static art direction. White-dominant; electric blue is reserved for proof marks and actions.
   One signature: blue proof marks drawn on a realistic example page, with typeset margin notes. */
:root{--mark:#0079FB;--mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;--tint:0 1px 2px rgba(11,42,102,.08),0 2px 6px rgba(11,42,102,.05),0 40px 80px -36px rgba(11,42,102,.32)}
body{overflow-x:clip}
.crumbs{max-width:var(--max);margin:0 auto;padding:4px var(--gut) 0}
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--pale)}.crumbs [aria-current]{color:var(--ink);font-weight:600}
.ft{border-top:1px solid var(--line)}
.ft-in{max-width:var(--max);margin:0 auto;padding:36px var(--gut) 44px;display:grid;grid-template-columns:auto 1fr;gap:16px 40px;align-items:center}
.ft nav{display:flex;gap:24px;justify-content:flex-end;font-size:15px;font-weight:600;color:var(--ink)}.ft nav [aria-current]{color:var(--cobalt)}
.ft p{grid-column:1/-1;font-size:13px;color:var(--muted)}
code{font-family:var(--mono);font-size:.88em;color:var(--deep);background:var(--ice);border-radius:5px;padding:1px 6px}
.ar{display:inline-block;transition:transform .2s var(--out)}a:hover>.ar{transform:translateX(3px)}

/* ---------- hero */
.hero{max-width:var(--max);margin:0 auto;padding:40px var(--gut) 0}
.hero h1{font-size:clamp(42px,5.7vw,82px);line-height:.98;letter-spacing:-.052em;font-weight:800;color:var(--ink);max-width:1120px;text-wrap:balance}
.hero h1 span{display:block;color:var(--cobalt)}
.hero-side{margin-top:28px;display:grid;grid-template-columns:minmax(0,560px) auto;gap:24px 64px;align-items:center;justify-content:space-between}
.hero-side>p:first-child{font-size:19px;line-height:1.55;color:var(--text)}
.cta{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.tlink{font-size:16px;font-weight:700;color:var(--cobalt)}
.status{grid-column:1/-1;display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--muted);margin-top:-6px}
.status b{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:var(--cobalt);border-radius:4px;padding:3px 7px}

/* the proof: page in the middle, margin notes either side, one shared reference letter */
.proof{position:relative;margin:44px 0 0;display:grid;grid-template-columns:minmax(0,230px) minmax(0,1fr) minmax(0,230px);gap:36px;align-items:start}
.proof::before{content:"";position:absolute;left:12%;right:12%;top:40px;bottom:-60px;background:radial-gradient(60% 55% at 50% 40%,rgba(185,214,251,.55),rgba(230,240,253,.25) 55%,transparent 75%);z-index:-1;pointer-events:none}
.frame{border-radius:16px;overflow:hidden;box-shadow:0 0 0 1px rgba(11,42,102,.07),var(--tint)}
.note{padding-top:150px;display:grid;gap:10px}
.note.left{text-align:right;justify-items:end}
.ref{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--mark);color:#fff;font:800 14px/1 var(--font)}
.nk{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--cobalt)}
.nt{font-size:23px;line-height:1.16;letter-spacing:-.025em;font-weight:800;color:var(--ink);text-wrap:balance}
.nd{font-size:15px;line-height:1.5;color:var(--muted)}.nd code{white-space:nowrap}
.wait{display:flex;align-items:center;gap:9px;margin-top:6px;font-size:14px;font-weight:700;color:var(--cobalt)}
.wait span{width:8px;height:8px;border-radius:50%;background:var(--mark);box-shadow:0 0 0 4px rgba(0,121,251,.16)}
.proof figcaption{grid-column:2;margin-top:-30px;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);text-align:right;position:relative}

/* ---------- the example website (illustrative) */
.site{background:#fff;color:#2B3B55;font-family:var(--font)}
.s-bar{height:34px;display:flex;align-items:center;padding:0 16px;background:#F5F8FC;border-bottom:1px solid #E3EBF6}
.s-bar span{font-size:12px;color:#6B7C98;background:#fff;border-radius:99px;padding:3px 12px;box-shadow:0 0 0 1px #E3EBF6}
.s-nav{display:flex;align-items:center;gap:22px;padding:18px 30px;font-size:13.5px;color:#5A6B86;position:relative}
.s-nav b{margin-right:auto;font-size:17px;letter-spacing:-.01em;color:#14233D}
.s-nav em{font-style:normal;font-weight:700;color:#14233D;box-shadow:inset 0 0 0 1.5px #14233D;border-radius:7px;padding:6px 12px}
.s-hero{display:grid;grid-template-columns:1.08fr .92fr;gap:28px;padding:20px 30px 28px;align-items:center}
.s-kick{font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#6B7C98;position:relative;justify-self:start}
.s-title{position:relative;margin:10px 0 14px;font-size:35px;line-height:1.04;letter-spacing:-.035em;font-weight:800;color:#14233D}
.s-p{font-size:14.5px;line-height:1.55;color:#5A6B86;position:relative}
.s-btn{display:inline-block;margin-top:18px;background:#14233D;color:#fff;font-size:13.5px;font-weight:700;border-radius:8px;padding:10px 16px;position:relative}
.s-img{position:relative}.s-img img{width:100%;height:270px;object-fit:cover;border-radius:12px}
.s-more{padding:4px 30px 32px}.s-more p{font-size:15px;font-weight:800;color:#14233D}
.s-more div{margin-top:12px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.s-more span{font-size:13px;font-weight:700;color:#14233D;border-radius:10px;box-shadow:inset 0 0 0 1px #E3EBF6;padding:14px 14px 34px;position:relative}
.s-more span::after{content:"";position:absolute;left:14px;right:30%;bottom:14px;height:6px;border-radius:3px;background:#EEF3FA}

/* proof mark on the headline */
.pm{position:absolute;inset:-9px -12px;border:2px solid var(--mark);border-radius:8px;pointer-events:none}
.pm i{position:absolute;left:-15px;top:calc(50% - 14px);min-width:28px;height:28px;display:grid;place-items:center;padding:0 9px;border-radius:99px;background:var(--mark);color:#fff;font:800 12.5px/1 var(--font);font-style:normal;white-space:nowrap;box-shadow:0 0 0 3px #fff}
.pm.lbl i{left:auto;right:-6px;top:-15px;height:24px;font-size:11.5px}
.pm.prop{border-style:dashed;background:rgba(0,121,251,.06)}
.pm.tag i{left:-2px;top:-26px;height:22px;border-radius:5px;font:700 11.5px/1 var(--mono);box-shadow:none}
.pm.tag.ok i{left:auto;right:-2px}
.pm.tag:not(.ok){border:2px dashed #9DB3D3}.pm.tag:not(.ok) i{background:#fff;color:#5A6B86;box-shadow:0 0 0 1.5px #9DB3D3}

/* structure view: quiet outlines on the other elements, so the heading reads as one element among many */
.xray .s-nav,.xray .s-kick,.xray .s-p,.xray .s-img,.xray .s-btn{outline:1px dashed #C9D6EA;outline-offset:3px}
.xray .s-nav::after,.xray .s-kick::after,.xray .s-p::after,.xray .s-img::after{position:absolute;right:0;top:-17px;font:600 10px/1 var(--mono);color:#8DA2C2;letter-spacing:0;text-transform:none}
.xray .s-nav::after{content:"nav";right:30px;top:4px}.xray .s-kick::after{content:"p";right:-14px;top:0}
.xray .s-p::after{content:"p"}.xray .s-img::after{content:"img";top:-15px}

/* ---------- investigation */
.inv{max-width:var(--max);margin:0 auto;padding:150px var(--gut) 140px}
.inv-head h2{font-size:56px;line-height:1.02;letter-spacing:-.04em;font-weight:800;color:var(--ink);max-width:900px;text-wrap:balance}
.tabs{margin-top:48px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}
.tabs [role=tab]{text-align:left;padding:22px 24px 0 0;position:relative;display:grid;gap:4px}
.tabs [role=tab]::before{content:"";position:absolute;left:0;right:24px;top:-1px;height:3px;border-radius:0 0 2px 2px;background:transparent}
.tabs [role=tab] b{font-size:28px;letter-spacing:-.03em;font-weight:800;color:#9AAECB}
.tabs [role=tab] span{font-size:15px;color:var(--muted)}
.tabs [role=tab][aria-selected=true]::before{background:var(--mark)}
.tabs [role=tab][aria-selected=true] b{color:var(--ink)}
.tabs [role=tab]:hover b{color:var(--ink)}
.stage{margin-top:56px}
.stg{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:0 32px;align-items:start}
.k{font-size:12.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--cobalt)}
.big{margin-top:10px;font-size:34px;line-height:1.1;letter-spacing:-.03em;font-weight:800;color:var(--ink);text-wrap:balance}
.big code{font-size:.8em}
.fine{margin-top:20px;font-size:14.5px;color:var(--muted)}.fine.c{text-align:center}
.stage-page,.crop{border-radius:16px;overflow:hidden;box-shadow:0 0 0 1px rgba(11,42,102,.07),var(--tint)}

/* Find: the page dominates; the crawl is a quiet column */
.stg-find .crawl{grid-column:1/5;padding-top:24px}
.stg-find .stage-page{grid-column:5/13}
.crawl ul{margin-top:26px;border-top:1px solid var(--line)}
.crawl li{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:16.5px;color:var(--ink)}
.crawl li b{font:600 13px/1.6 var(--mono);color:var(--muted)}
.crawl li.hit{font-weight:800;box-shadow:inset 3px 0 0 var(--mark);padding-left:16px;background:linear-gradient(90deg,rgba(230,240,253,.9),transparent)}
.crawl li em{grid-column:1/-1;font-style:normal;font-size:13.5px;font-weight:700;color:var(--mark)}

/* Understand: the evidence dominates; the page region it refers to stays visible */
.stg-und .ev{grid-column:1/8}
.stg-und .crop{grid-column:8/13;height:470px;position:relative}
.crop-in{width:760px;transform:scale(1.12);transform-origin:0 0;position:absolute;left:-10px;top:-40px}
.html{margin:28px 0 0;font:500 16.5px/1.9 var(--mono);color:#4A5E82;background:#F5F8FC;border-radius:16px;padding:24px 28px;white-space:pre-wrap;word-break:break-word;box-shadow:inset 0 0 0 1px #E3EBF6}
.html span{display:block}
.html .on{position:relative;color:var(--ink);font-weight:700;background:#fff;border-radius:8px;margin:6px -12px;padding:10px 12px 10px 48px;box-shadow:0 0 0 2px var(--mark)}
.html .on .ref{position:absolute;left:10px;top:10px;width:26px;height:26px;font-size:12.5px}
.ev dl{margin-top:26px;display:grid;gap:14px}
.ev dl div{display:grid;grid-template-columns:150px 1fr;gap:16px;font-size:16.5px;color:var(--ink)}
.ev dt{font-weight:700;color:var(--muted)}.ev dd{margin:0}

/* Review: the proposal dominates; publishing is clearly someone else's step */
.stg-rev .pr{grid-column:1/8}
.stg-rev .stage-page{grid-column:8/13}
.small .site{zoom:.72}
.diff{margin-top:26px;display:flex;align-items:center;gap:22px}
.diff .lab{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.diff code{font-size:20px;padding:8px 14px;border-radius:9px}
.was code{background:#F2F5FA;color:#7A8BA8;text-decoration:line-through;text-decoration-color:rgba(122,139,168,.6)}
.is code{background:var(--mark);color:#fff}
.diff .arrow{font-size:28px;color:var(--pale);padding-top:20px}
.sug{margin-top:26px;font-size:40px;line-height:1.06;letter-spacing:-.035em;font-weight:800;color:var(--ink);padding-left:22px;box-shadow:inset 4px 0 0 var(--mark);text-wrap:balance}
.basis{margin-top:20px;font-size:16px;line-height:1.55;color:var(--muted);max-width:560px}
.decide{margin-top:34px;padding-top:26px;border-top:1px solid var(--line);display:grid;grid-template-columns:auto auto 1fr;gap:12px 14px;align-items:center}
.decide p{font-size:14.5px;line-height:1.5;color:var(--muted);padding-left:12px}
.b{display:inline-flex;align-items:center;height:48px;padding:0 24px;border-radius:10px;font-size:16px;font-weight:700}
.b.solid{background:var(--cobalt);color:#fff}.b.solid:hover{background:var(--deep)}
.b.line{box-shadow:inset 0 0 0 1.5px var(--pale);color:var(--cobalt)}.b.line:hover{background:var(--ice)}

/* Verify: the comparison is the whole stage */
.stg-ver{display:block}
.scenario{max-width:760px;margin:0 auto;text-align:center;font-size:16px;line-height:1.55;color:var(--muted)}
.cmp{--x:30%;position:relative;max-width:1000px;margin:84px auto 0;border-radius:18px;box-shadow:0 0 0 1px rgba(11,42,102,.07),var(--tint)}
.cmp-a,.cmp-b{border-radius:18px;overflow:hidden}
.cmp-b{position:absolute;inset:0;clip-path:inset(0 0 0 var(--x))}
.cmp .s-title{font-size:40px}.cmp .s-kick{visibility:hidden}.cmp .s-img img{height:250px}.cmp .s-more{display:none}
.cmp-h{position:absolute;top:0;bottom:0;left:var(--x);width:2px;margin-left:-1px;background:var(--mark)}
.cmp-h span{position:absolute;left:50%;top:86%;width:52px;height:52px;margin:-26px 0 0 -26px;border-radius:50%;background:#fff;box-shadow:0 0 0 2px var(--mark),0 10px 24px -8px rgba(0,104,230,.5)}
.cmp-h span::before,.cmp-h span::after{content:"";position:absolute;top:50%;width:8px;height:8px;margin-top:-4px;border-top:2px solid var(--mark);border-left:2px solid var(--mark)}
.cmp-h span::before{left:13px;transform:rotate(-45deg)}.cmp-h span::after{right:13px;transform:rotate(135deg)}
.cmp-l{position:absolute;top:-66px;display:grid;gap:2px}
.cmp-l b{font-size:20px;letter-spacing:-.02em;font-weight:800;color:var(--ink)}
.cmp-l span{font-size:14.5px;color:var(--muted)}
.cmp-l.l{left:0}.cmp-l.r{right:0;text-align:right}.cmp-l.r b{color:var(--cobalt)}
.cmp-range{display:block;max-width:1000px;margin:26px auto 0}.cmp-range input{width:100%;accent-color:var(--cobalt)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- responsive (tablet/phone refined in Gate E) */
@media (max-width:1180px){
  .proof{grid-template-columns:minmax(0,1fr);gap:28px}.note{padding-top:0}.note.left{text-align:left;justify-items:start}
  .proof figcaption{grid-column:1;margin-top:-16px}
  .hero-side{grid-template-columns:minmax(0,1fr)}
  .stg{grid-template-columns:minmax(0,1fr);gap:32px}.stg>*{grid-column:1/-1!important}
  .tabs{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  :root{--gut:20px}
  .s-hero{grid-template-columns:1fr}.s-img img{height:180px}.s-title{font-size:28px}.s-nav span{display:none}
  .inv{padding:96px var(--gut)}.inv-head h2{font-size:36px}.big{font-size:26px}.sug{font-size:28px}
  .tabs [role=tab] b{font-size:21px}
  .crop-in{width:600px}.stg-und .crop{height:380px}
  .decide{grid-template-columns:auto auto}.decide p{grid-column:1/-1;padding-left:0}
  .cmp{margin-top:28px}.cmp-l{position:static;padding:12px 4px 0}.cmp-l.r{text-align:left}.cmp .s-title{font-size:26px}.cmp .s-img img{height:160px}.cmp-l b{font-size:16px}
  .ft-in{grid-template-columns:1fr}.ft nav{justify-content:flex-start;flex-wrap:wrap}
}