/* R01 What Is AEO — editorial explainer */
.page-wa main>section{overflow-x:clip}
.mono{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--p3)}
.crumbs{display:flex;flex-wrap:wrap;gap:10px;font-size:14px;color:var(--mut);margin-bottom:20px}
.crumbs a:hover{color:var(--p3)}.crumbs b{color:var(--p3);font-weight:600}
.rbar{position:fixed;left:0;right:0;top:0;height:3px;z-index:200;pointer-events:none}
.rbar i{display:block;height:100%;background:linear-gradient(90deg,var(--p),var(--p2));transform:scaleX(0);transform-origin:left}
.fine{font-size:13px;color:var(--mut);margin:14px 0 0}
code{font-family:"JetBrains Mono",monospace;font-size:.86em;padding:2px 6px;border-radius:6px;background:var(--lav);color:var(--p3)}

/* hero */
.wa-hero{position:relative;padding:50px 0 0;background:radial-gradient(700px 420px at 80% 30%,#efe6ff,transparent 70%),linear-gradient(180deg,#fff,var(--lav2));overflow:hidden}
.wa-hin{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:end}
.wa-hin>*{min-width:0}
.wa-copy{padding-bottom:70px}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--mut)}
.tagx{padding:4px 10px;border-radius:999px;background:var(--ink);color:#fff;font:600 11px "JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.06em}
.wa-h1{font-size:clamp(38px,4.8vw,66px);margin:18px 0 22px;line-height:1.04}
.wa-h1 .gr{background:linear-gradient(90deg,var(--p3),var(--p2));-webkit-background-clip:text;background-clip:text;color:transparent}
.qans{position:relative;max-width:640px;padding:20px 22px 20px 26px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh)}
.qans:before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:0 4px 4px 0;background:var(--p)}
.qans p{margin:8px 0 0;font-size:17px;line-height:1.65;color:var(--ink)}
.wa-vis{position:relative;min-height:500px;display:flex;justify-content:center;align-items:flex-end}
.wa-eagle{position:relative;z-index:1;height:470px;width:auto;max-width:100%;object-fit:contain}
.chat{position:absolute;z-index:2;right:-2%;top:4%;width:270px;display:grid;gap:10px}
.cq{justify-self:end;max-width:220px;padding:10px 14px;border-radius:16px 16px 4px 16px;background:var(--ink);color:#fff;font-size:13.5px;font-weight:600;animation:waIn .6s .8s var(--ease) both}
.ca{padding:14px;border-radius:16px 16px 16px 4px;background:#fff;border:1px solid var(--line);box-shadow:0 20px 40px -24px rgba(60,30,140,.45);animation:waIn .6s 1.4s var(--ease) both}
.ca>div[class^=cl]{height:7px;border-radius:4px;background:var(--lav);margin-bottom:7px;transform-origin:left;animation:waType 5s 1.8s var(--ease) infinite both}
.cl2{width:88%;animation-delay:2.1s!important}.cl3{width:60%;animation-delay:2.4s!important}
.cites{display:flex;gap:6px;margin-top:10px}
.ct{font:600 10.5px "JetBrains Mono",monospace;padding:4px 8px;border-radius:7px;background:var(--lav);color:var(--p3);animation:waCite 5s 2.8s var(--ease) infinite both}
.ct.c1{background:var(--p);color:#fff}.ct.c2{animation-delay:3.1s}
@keyframes waIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes waType{0%{transform:scaleX(0)}20%,90%{transform:scaleX(1)}100%{transform:scaleX(1);opacity:.4}}
@keyframes waCite{0%,5%{opacity:0;transform:scale(.6)}15%,90%{opacity:1;transform:none}100%{opacity:0}}

/* layout */
.wa-lay{display:grid;grid-template-columns:250px 1fr;gap:60px;align-items:start}
.wa-lay>*{min-width:0}
.wtoc{position:sticky;top:96px;display:flex;flex-direction:column;gap:10px}
.wtoc nav{display:flex;flex-direction:column;border-left:2px solid var(--line)}
.wtoc nav a{position:relative;display:flex;gap:10px;padding:7px 12px;font-size:13.5px;color:var(--mut);transition:color .2s}
.wtoc nav a span{font:600 10.5px/1.9 "JetBrains Mono",monospace;color:#b3aec8}
.wtoc nav a:hover{color:var(--ink)}
.wtoc nav a.cur{color:var(--ink);font-weight:700}
.wtoc nav a.cur:before{content:"";position:absolute;left:-2px;top:6px;bottom:6px;width:2px;background:var(--p)}
.wtoc nav a.cur span{color:var(--p)}
.wsvc{display:block;margin-top:10px;padding:16px;border-radius:16px;background:var(--ink);color:#fff;transition:transform .3s var(--ease)}
.wsvc b{display:block;font-size:15px}.wsvc span{font-size:13px;color:#c9b8ff}
.wsvc:hover{transform:translateY(-3px)}
.wdoc{max-width:800px}
.wdoc p{font-size:16.5px;line-height:1.75;color:#3d3b55}
.wdoc a{color:var(--p3);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.intro{font-size:18.5px!important;color:var(--ink)!important;margin:0 0 20px}
.ws{padding:34px 0 10px;scroll-margin-top:90px}
.ws h2{display:flex;align-items:baseline;gap:14px;font-size:clamp(24px,2.4vw,32px);margin:0 0 14px;letter-spacing:-.015em}
.sn{font:700 13px "JetBrains Mono",monospace;color:var(--p);padding:4px 8px;border-radius:8px;background:var(--lav);transform:translateY(-4px)}
.echips{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.echips span{padding:9px 14px;border-radius:12px;background:#fff;border:1px solid var(--line);font-size:14.5px;font-weight:600;transition:border-color .2s,transform .2s}
.echips span:hover{border-color:var(--p2);transform:translateY(-2px)}

/* venn */
.venn{position:relative;height:340px;max-width:560px;margin:14px auto 10px}
.vc{position:absolute;width:220px;height:220px;border-radius:50%;display:flex;flex-direction:column;align-items:center;padding-top:44px;text-align:center;mix-blend-mode:multiply;transition:transform 1s var(--ease)}
.vc b{font-size:20px}.vc small{font-size:12px;color:var(--mut);max-width:130px}
.v1{left:calc(50% - 190px);top:0;background:rgba(156,103,255,.28)}
.v2{left:calc(50% - 30px);top:0;background:rgba(127,66,244,.3)}
.v3{left:calc(50% - 110px);top:120px;background:rgba(93,43,215,.22);padding-top:130px}
.venn:not(.vis) .v1{transform:translate(-60px,-20px)}.venn:not(.vis) .v2{transform:translate(60px,-20px)}.venn:not(.vis) .v3{transform:translateY(50px)}
.vcore{position:absolute;left:50%;top:128px;transform:translateX(-50%);padding:8px 12px;border-radius:12px;background:var(--ink);color:#fff;font-size:12px;font-weight:700;text-align:center;line-height:1.35;white-space:nowrap;opacity:0;transition:opacity .6s .9s}
.venn.vis .vcore{opacity:1}
.gq{margin:10px 0 18px;padding:22px 26px;border-radius:18px;background:var(--lav2);border:1px solid var(--line)}
.gq p{margin:0;font-size:19px!important;line-height:1.55!important;font-weight:600;color:var(--ink)!important}
.gq cite{display:block;margin-top:10px;font-style:normal;font-size:13.5px}
.tblw{overflow-x:auto;margin:14px 0 18px;border-radius:16px;border:1px solid var(--line)}
.tblw table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
.tblw th{text-align:left;padding:12px 14px;background:var(--ink);color:#fff;font-weight:700;font-size:13px}
.tblw td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top;line-height:1.5;color:#3d3b55}
.tblw tr:nth-child(even) td{background:var(--lav2)}

/* mention citation referral */
.mcr{margin-top:10px;padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh)}
.mtabs{display:inline-flex;gap:4px;padding:4px;border-radius:14px;background:var(--lav2);margin-bottom:16px}
.mt{padding:9px 18px;border:0;border-radius:10px;background:none;font:inherit;font-weight:700;font-size:14.5px;color:var(--mut);cursor:pointer;transition:.25s}
.mt.on{background:var(--p);color:#fff;box-shadow:0 8px 18px -10px rgba(127,66,244,.8)}
.mstage{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
.mstage>*{min-width:0}
.mock{position:relative;padding:16px;border-radius:16px;background:var(--lav2);min-height:250px}
.mq2{display:inline-block;padding:8px 12px;border-radius:12px;background:var(--ink);color:#fff;font-size:13.5px;font-weight:600;margin-bottom:10px}
.mans{margin:0 0 12px!important;font-size:15px!important;color:var(--ink)!important}
.mm{background:transparent;color:inherit;border-radius:4px;padding:0 2px;transition:.4s}
.msrc{display:flex;gap:6px;flex-wrap:wrap}
.msrc span{font:600 11px "JetBrains Mono",monospace;padding:5px 9px;border-radius:8px;background:#fff;border:1px solid var(--line);color:var(--mut);transition:.4s}
.mvisit{position:relative;margin-top:14px;height:66px}
.ga{position:absolute;right:0;bottom:0;padding:10px 12px;border-radius:12px;background:#fff;border:1px solid var(--line);opacity:0;transform:translateY(10px);transition:.5s .5s var(--ease)}
.ga small{display:block;font-size:11px;color:var(--mut)}.ga b{display:block;font-size:14px}.ga code{font-size:10.5px}
.cur2{position:absolute;left:30px;top:-40px;width:16px;height:16px;border-left:2px solid var(--ink);border-top:2px solid var(--ink);transform:rotate(-15deg);opacity:0;transition:.6s var(--ease)}
.mdefs{display:grid;gap:10px}
.md{padding:14px 16px;border-radius:14px;border:1.5px solid var(--line);opacity:.5;transition:.35s}
.md b{font-size:16px}.md p{margin:4px 0 0!important;font-size:14.5px!important;line-height:1.55!important}
.mstage[data-m=mention] .md[data-m=mention],.mstage[data-m=citation] .md[data-m=citation],.mstage[data-m=referral] .md[data-m=referral]{opacity:1;border-color:var(--p);background:#fbf9ff}
.mstage[data-m=mention] .mm{background:#ffe7a8}
.mstage[data-m=citation] .mcite,.mstage[data-m=referral] .mcite{background:var(--p);color:#fff;border-color:var(--p);transform:scale(1.06)}
.mstage[data-m=referral] .cur2{opacity:1;left:40px;top:-18px}
.mstage[data-m=referral] .ga{opacity:1;transform:none}

/* pipeline */
.pipe{list-style:none;margin:16px 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;counter-reset:x}
.pipe li{position:relative;padding:14px;border-radius:14px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;line-height:1.4}
.pipe li em{display:grid;place-items:center;width:26px;height:26px;margin-bottom:8px;border-radius:8px;background:var(--lav);color:var(--p);font:700 12px "JetBrains Mono",monospace;font-style:normal;transition:.4s}
.pipe li.vis em{background:var(--p);color:#fff}
.pipe li:not(:nth-child(4n)):after{content:"→";position:absolute;right:-10px;top:50%;transform:translateY(-50%);color:var(--p2);font-weight:700;z-index:1}
.note{padding:14px 18px;border-radius:14px;background:#fff6e5;border:1px solid #f7dfae;font-size:15px!important;color:#6b4d12!important}

/* foundations */
.fds{display:grid;gap:10px}
.fd{border-radius:16px;background:#fff;border:1px solid var(--line);transition:border-color .3s,box-shadow .3s}
.fd[open]{border-color:var(--p2);box-shadow:0 16px 30px -22px rgba(127,66,244,.5)}
.fd summary{display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer;list-style:none}
.fd summary::-webkit-details-marker{display:none}
.fd summary em{font:700 12px "JetBrains Mono",monospace;font-style:normal;color:var(--p);padding:4px 7px;border-radius:7px;background:var(--lav)}
.fd summary b{flex:1;font-size:16.5px}
.fd[open] .pm:after{transform:rotate(0)}
.fdb{padding:0 18px 16px 62px}
.fdb p{margin:0 0 8px;font-size:15.5px!important}
.fnote{padding-left:12px;border-left:3px solid var(--p2);color:var(--ink)!important;font-weight:600}

/* before/after */
.ba{padding:20px;border-radius:22px;background:var(--ink);color:#fff}
.baq{font-weight:700;font-size:17px;margin-bottom:14px}
.bawrap{position:relative;border-radius:16px;overflow:hidden;min-height:170px}
.bapane{position:absolute;inset:0;padding:40px 22px 20px}
.bapane p{margin:0;font-size:16px!important;line-height:1.65!important}
.bapane.after{background:#fff}.bapane.after p{color:var(--ink)!important}
.bapane.after u{text-decoration:none;background:linear-gradient(transparent 60%,#d9f5e8 60%)}
.bapane.before{background:#2a2654;clip-path:inset(0 calc(100% - var(--x)) 0 0)}
.bapane.before p{color:#d8d4f0!important}
.bapane.before s{text-decoration-color:#ff7a95;text-decoration-thickness:2px;color:#ff9fb2}
.bal{position:absolute;top:12px;font:600 10.5px "JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.08em;padding:3px 8px;border-radius:6px}
.before .bal{left:14px;background:#ff7a95;color:#2a0d18}.after .bal{right:14px;background:#22c38a;color:#05291b}
.bar{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0;z-index:3}
.bah{position:absolute;top:0;bottom:0;left:var(--x);width:3px;margin-left:-1.5px;background:var(--p2);z-index:2;pointer-events:none}
.bah:after{content:"⟷";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:36px;height:36px;border-radius:50%;background:var(--p);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 0 0 5px rgba(156,103,255,.3)}
.banotes{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.banotes div{padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.07)}
.banotes b{font-size:14px}.banotes p{margin:4px 0 0;font-size:13.5px!important;color:#c9c3e6!important;line-height:1.5!important}
.ba .fine{color:#a9a3c9}

/* schema */
.sch{display:grid;grid-template-columns:.9fr 1.1fr;gap:16px;align-items:stretch}
.code{padding:18px;border-radius:16px;background:#141233;color:#d7d2f5;font:500 13.5px/1.8 "JetBrains Mono",monospace}
.code .k{color:#c9b8ff}.code .s{color:#8fe3bd}
.schx{padding:18px 20px;border-radius:16px;background:var(--lav2);border:1px solid var(--line)}
.schx p{margin:0;font-size:15.5px!important}

/* measure */
.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:6px 0 14px}
.tool{padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
.tool b{display:block;font-size:15px;margin:6px 0 4px;line-height:1.35}.tool p{margin:0;font-size:14px!important;line-height:1.55!important}
.limits{padding:18px 20px;border-radius:16px;background:#fff6e5;border:1px solid #f7dfae}
.limits b{color:#6b4d12}.limits ul{margin:8px 0 0;padding-left:18px}.limits li{font-size:14.5px;line-height:1.6;color:#6b4d12;margin-bottom:4px}

/* myths */
.myths{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.myth{position:relative;height:178px;border:0;padding:0;background:none;cursor:pointer;perspective:900px;font:inherit;text-align:left}
.mf,.mb2{position:absolute;inset:0;display:flex;flex-direction:column;gap:6px;padding:18px;border-radius:18px;backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .7s var(--ease)}
.mf{background:#fff;border:1px solid var(--line)}
.mb2{background:linear-gradient(145deg,var(--p3),var(--p));color:#fff;transform:rotateY(180deg)}
.myth[aria-pressed=true] .mf{transform:rotateY(-180deg)}.myth[aria-pressed=true] .mb2{transform:none}
.mf em,.mb2 em{font:700 10.5px "JetBrains Mono",monospace;font-style:normal;text-transform:uppercase;letter-spacing:.06em;color:#d6456b}
.mb2 em{color:#e6ddff}
.mf b{font-size:17px;line-height:1.3;color:var(--ink);text-decoration:line-through;text-decoration-color:rgba(214,69,107,.5)}
.mb2 b{font-size:14.5px;font-weight:600;line-height:1.5}
.mf small{margin-top:auto;font-size:12px;color:var(--p3);font-weight:700}
.myth:hover .mf{border-color:var(--p2)}

/* roadmap */
.road{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:10px;padding-top:26px}
.road:before{content:"";position:absolute;left:0;right:0;top:8px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--p),var(--p2),var(--line))}
.rstep{position:relative;padding:16px 14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
.rstep:before{content:"";position:absolute;left:16px;top:-24px;width:13px;height:13px;border-radius:50%;background:#fff;border:3px solid var(--p)}
.rday{font:700 11px "JetBrains Mono",monospace;color:var(--p)}
.rstep h3{font-size:15.5px;margin:6px 0}.rstep p{margin:0;font-size:13.5px!important;line-height:1.55!important}
.concl{margin-top:30px;padding:28px!important;border-radius:22px;background:var(--lav2);border:1px solid var(--line)}
.concl h2{margin-bottom:10px}
.refs{padding-left:20px}.refs li{margin-bottom:8px;font-size:15px}

@media (max-width:1100px){
 .wa-hin{grid-template-columns:1fr;gap:0}
 .wa-copy{padding-bottom:10px}
 .wa-vis{min-height:0;max-width:520px;width:100%;margin:0 auto}
 .wa-eagle{height:400px}
 .wa-lay{grid-template-columns:1fr;gap:10px}
 .wtoc{position:static}.wtoc nav{display:none}.wsvc{margin:0}
 .pipe{grid-template-columns:1fr 1fr}.pipe li:after{display:none}
 .road{grid-template-columns:1fr;padding:0 0 0 26px}.road:before{left:8px;right:auto;top:0;bottom:0;width:3px;height:auto;background:linear-gradient(var(--p),var(--p2),var(--line))}
 .rstep:before{left:-24px;top:18px}
 .myths{grid-template-columns:1fr 1fr}
}
@media (max-width:700px){
 .wa-hero{padding-top:30px}
 .wa-eagle{height:320px}
 .chat{width:200px;right:0}.cq{font-size:12px}
 .mstage,.sch,.tools,.banotes{grid-template-columns:1fr}
 .myths{grid-template-columns:1fr}
 .venn{transform:scale(.72);transform-origin:top center;height:250px}
 .bawrap{min-height:250px}
 .fdb{padding-left:18px}
 .intro{font-size:17px!important}
}
@media (prefers-reduced-motion:reduce){
 .cq,.ca,.ca>div,.ct{animation:none}
 .vc{transition:none}
}
.chat{right:-7%;top:auto;bottom:34%;width:250px}
@media (max-width:1100px){.wtoc>.mono{display:none}.chat{right:0}}
@media (max-width:700px){
 .chat{width:190px;bottom:30%;right:-2%}
 .venn{transform:none;height:250px;max-width:320px}
 .vc{width:160px;height:160px;padding-top:30px}.vc b{font-size:17px}.vc small{font-size:10.5px;max-width:100px}
 .v1{left:calc(50% - 138px)}.v2{left:calc(50% - 22px)}.v3{left:calc(50% - 80px);top:88px;padding-top:96px}
 .vcore{top:92px;font-size:10.5px;padding:6px 9px}
}