*,*::before,*::after{box-sizing:border-box}
:root{
  --accent:#5b3df5;
  --ink:#0e1116;--ink-2:#3b4250;--muted:#6b7280;
  --bg:#ffffff;--bg-alt:#f6f7fb;--line:#e6e8ef;
  --radius:14px;--shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
  --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:var(--accent);text-underline-offset:3px}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5vw,3.5rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:750}
h3,.h3{font-size:1.15rem;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:780px}
.center{text-align:center}
.muted{color:var(--muted)}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:100}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4em;border-radius:999px;font-weight:650;text-decoration:none;padding:.75em 1.35em;font-size:1rem;border:1.5px solid transparent;transition:transform .12s ease,box-shadow .12s ease,background .12s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px color-mix(in srgb,var(--accent) 35%,transparent)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink-2)}
.btn-light{background:#fff;color:var(--ink)}
.btn-sm{padding:.5em 1em;font-size:.92rem}
.btn-lg{padding:.9em 1.6em;font-size:1.05rem}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:750;flex:none;max-width:60%}
.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--accent);color:#fff;font-size:.78rem;letter-spacing:.02em;flex:none}
.brand-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav{display:flex;gap:18px;margin-left:auto;font-size:.94rem;min-width:0;overflow:hidden}
.nav a{color:var(--ink-2);text-decoration:none;white-space:nowrap}
.nav a:hover{color:var(--ink)}
@media (max-width:1120px){.nav{display:none}.header-inner .btn{margin-left:auto}}

/* hero */
.hero{padding:72px 0 64px;background:radial-gradient(1000px 500px at 85% -10%,color-mix(in srgb,var(--accent) 14%,transparent),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.eyebrow{display:inline-block;font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,#fff);padding:.35em .8em;border-radius:999px;margin-bottom:18px}
.lede{font-size:1.2rem;color:var(--ink-2);max-width:40em}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 18px}
.trust{font-size:.92rem}
@media (max-width:900px){.hero{padding:44px 0}.hero-grid{grid-template-columns:1fr;gap:36px}}

/* agent card */
.agent-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.agent-card-top{display:flex;align-items:center;gap:6px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--bg-alt)}
.dot{width:9px;height:9px;border-radius:50%;background:#d7dae3}
.agent-card-title{margin-left:8px;font-size:.85rem;font-weight:650;color:var(--ink-2)}
.agent-card ul{list-style:none;margin:0;padding:6px 0}
.agent-card li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}
.agent-card li:last-child{border-bottom:0}
.agent-card .role{display:block;font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.agent-card .task{display:block;font-size:.95rem;color:var(--ink)}
.agent-card .status{flex:none;font-size:.75rem;font-weight:650;padding:.3em .7em;border-radius:999px;background:#ecfdf3;color:#067647}
.agent-card-foot{padding:12px 16px;background:var(--bg-alt);font-size:.85rem;color:var(--muted);border-top:1px solid var(--line)}

/* sections */
.section{padding:72px 0}
.section.alt{background:var(--bg-alt)}
.section-intro{font-size:1.1rem;color:var(--ink-2);max-width:46em}
.center .section-intro{margin-left:auto;margin-right:auto}
.definition p:first-child{font-size:1.2rem;color:var(--ink);border-left:4px solid var(--accent);padding-left:18px}
.prose p,.prose li{color:var(--ink-2)}
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.4em}
.grid{display:grid;gap:18px;margin-top:28px}
.cards{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.cards.three{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 2px rgba(16,24,40,.03)}
.card p{color:var(--ink-2);margin:0;font-size:.98rem}
.card.plain{background:transparent;box-shadow:none}
.link-card{display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:border-color .12s,transform .12s}
.link-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.link-card p{flex:1;margin-bottom:14px}
.more{font-weight:650;color:var(--accent);font-size:.95rem}
.checks{list-style:none;padding:0;margin:0 0 1.2em}
.checks li{position:relative;padding-left:30px;margin-bottom:.6em}
.checks li::before{content:"";position:absolute;left:0;top:.35em;width:18px;height:18px;border-radius:50%;background:color-mix(in srgb,var(--accent) 14%,#fff) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' fill='none' stroke='%23333' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat}

/* steps */
.steps{list-style:none;padding:0;margin:28px 0 32px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.steps li{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.step-n{flex:none;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;font-weight:750}
.steps p{margin:0;color:var(--ink-2);font-size:.97rem}

/* table */
.table-wrap{overflow-x:auto;margin-top:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:.95rem}
th,td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--bg-alt);font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-2)}
tbody th{font-weight:650}
tr:last-child th,tr:last-child td{border-bottom:0}
.hl{background:color-mix(in srgb,var(--accent) 7%,#fff);font-weight:600}
thead .hl{color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,#fff)}

/* logos */
.logos{list-style:none;padding:0;margin:28px 0 0;display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.logos li{border:1px solid var(--line);border-radius:999px;padding:.45em 1em;font-weight:650;color:var(--ink-2);font-size:.92rem;background:#fff}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:4px 0}
.faq summary{cursor:pointer;list-style:none;font-weight:650;font-size:1.06rem;padding:16px 36px 16px 0;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:12px;font-size:1.5rem;color:var(--accent);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq-a p{color:var(--ink-2)}

/* cta band */
.cta-band{background:var(--ink);color:#fff;padding:64px 0}
.cta-band::before{content:""}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:.3em}
.cta-band p{color:#c9ced8;margin:0;max-width:40em}
.cta-band a:not(.btn){color:#fff}

/* article */
.article-head{padding:56px 0 24px;background:radial-gradient(900px 400px at 90% -20%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 70%)}
.article-head h1{font-size:clamp(2rem,4.4vw,3rem)}
.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:16px}
.crumbs a{color:var(--muted)}
.meta{font-size:.9rem}
.article-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;padding-top:24px;padding-bottom:64px}
.article-grid .prose{max-width:740px}
.toc{position:sticky;top:88px;align-self:start;font-size:.9rem}
.toc-h{font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.75rem;color:var(--muted)}
.toc ol{padding-left:18px;margin:0 0 18px}
.toc li{margin-bottom:.5em}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--accent)}
@media (max-width:900px){.article-grid{grid-template-columns:1fr;gap:0}.toc{display:none}}
.tldr{background:var(--bg-alt);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:10px;padding:18px 20px;margin-bottom:8px}
.tldr p{color:var(--ink);margin:0}
.tldr .tldr-h{font-weight:750;font-size:.78rem;text-transform:uppercase;letter-spacing:.07em;color:var(--accent);margin-bottom:6px}
.inline-cta{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin:32px 0;padding:22px;border-radius:var(--radius);background:color-mix(in srgb,var(--accent) 8%,#fff);border:1px solid color-mix(in srgb,var(--accent) 22%,#fff)}
.inline-cta p{margin:0;flex:1 1 320px;color:var(--ink)}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:48px 0 24px;font-size:.94rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1.2fr .8fr;gap:40px}
.footer-brand{font-weight:750;font-size:1.05rem;margin-bottom:.4em}
.footer-h{font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:.5em}
.footer-links a{color:var(--ink-2);text-decoration:none}
.footer-links a:hover{color:var(--accent)}
.legal{margin-top:36px;padding-top:18px;border-top:1px solid var(--line);font-size:.85rem}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr;gap:24px}}

/* mobile sticky CTA */
.mobile-cta{display:none}
@media (max-width:700px){
  body{padding-bottom:76px}
  .mobile-cta{display:block;position:fixed;left:0;right:0;bottom:0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:rgba(255,255,255,.95);border-top:1px solid var(--line);z-index:60}
  .mobile-cta .btn{width:100%}
  .section{padding:52px 0}
  .header-inner .btn{display:none}
  .brand{max-width:100%}
  .wrap{padding:0 16px}
}