:root{--navy:#0e1b2e;--blue:#0b84ff;--teal:#00a997;--ink:#152236;--muted:#5f6f82;--line:#dce4ec;--soft:#f3f7fa;--white:#fff;--max:1180px;--radius:18px;--shadow:0 14px 40px rgba(14,27,46,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.container{width:min(var(--max),calc(100% - 36px));margin:auto}.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:var(--navy);font-weight:800;font-size:1.15rem}.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--teal));display:grid;place-items:center;color:white;font-weight:900}.nav{display:flex;gap:22px;align-items:center}.nav a{color:var(--ink);font-weight:650;font-size:.95rem}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px}.hero{background:radial-gradient(circle at 80% 10%,rgba(11,132,255,.13),transparent 35%),linear-gradient(180deg,#fff,#f5f9fc);padding:88px 0 72px}.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:54px;align-items:center}.eyebrow{color:var(--teal);font-size:.82rem;letter-spacing:.13em;text-transform:uppercase;font-weight:800}.hero h1,.page-hero h1{font-size:clamp(2.5rem,5vw,4.7rem);line-height:1.02;letter-spacing:-.045em;color:var(--navy);margin:.25em 0}.hero p,.page-hero p{font-size:1.2rem;color:var(--muted);max-width:760px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:11px;padding:13px 19px;font-weight:750;border:1px solid transparent}.btn-primary{background:var(--blue);color:#fff}.btn-secondary{border-color:var(--line);color:var(--navy);background:#fff}.network-card{background:var(--navy);color:#fff;border-radius:26px;padding:30px;box-shadow:var(--shadow)}.flow{display:grid;gap:14px}.flow-item{display:flex;gap:13px;align-items:center;background:rgba(255,255,255,.08);padding:14px 16px;border-radius:13px}.dot{width:12px;height:12px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 5px rgba(0,181,165,.13)}.section{padding:72px 0}.section.alt{background:var(--soft)}.section-head{max-width:790px;margin-bottom:34px}.section h2{font-size:clamp(1.8rem,3vw,2.8rem);line-height:1.13;letter-spacing:-.03em;color:var(--navy);margin:0 0 14px}.section h3{color:var(--navy);line-height:1.25}.lead{font-size:1.12rem;color:var(--muted)}.grid{display:grid;gap:22px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 4px 18px rgba(14,27,46,.045)}.card h3{margin-top:0}.card p{color:var(--muted)}.card-link{display:inline-flex;font-weight:750}.page-hero{padding:64px 0 48px;background:linear-gradient(180deg,#f6f9fc,#fff);border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(2.4rem,4vw,4rem);max-width:920px}.breadcrumbs{font-size:.88rem;color:var(--muted)}.article-wrap{display:grid;grid-template-columns:minmax(0,780px) 300px;gap:54px;padding:56px 0 80px}.article h2{font-size:2rem;color:var(--navy);margin-top:2.1em;line-height:1.2}.article h3{font-size:1.35rem;margin-top:1.7em}.article p,.article li{font-size:1.04rem}.summary-box,.callout{border-radius:16px;padding:22px 24px;margin:24px 0}.summary-box{background:#eaf5ff;border:1px solid #cde7ff}.callout{background:#effaf8;border-left:5px solid var(--teal)}.toc{position:sticky;top:96px}.toc a{display:block;padding:8px 0;border-bottom:1px solid var(--line);color:var(--muted)}.comparison{width:100%;border-collapse:collapse;margin:22px 0}.comparison th,.comparison td{padding:13px;text-align:left;border:1px solid var(--line);vertical-align:top}.comparison th{background:var(--soft);color:var(--navy)}.faq details{border-top:1px solid var(--line);padding:15px 0}.faq summary{font-weight:750;cursor:pointer}.related{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.site-footer{background:var(--navy);color:#d7e2ee;padding:58px 0 28px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}.site-footer h3,.site-footer h4{color:#fff}.site-footer a{color:#d7e2ee;display:block;margin:7px 0}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-size:.9rem}.glossary-grid{columns:3;column-gap:22px}.term{break-inside:avoid;margin:0 0 14px;padding:15px;border:1px solid var(--line);border-radius:12px;background:#fff}.term strong{display:block;color:var(--navy)}
@media(max-width:900px){.nav{display:none}.nav.open{display:flex;position:absolute;left:0;right:0;top:76px;background:#fff;padding:20px;flex-direction:column;border-bottom:1px solid var(--line)}.menu-toggle{display:block}.hero-grid,.article-wrap{grid-template-columns:1fr}.toc{position:static}.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.glossary-grid{columns:2}}
@media(max-width:580px){.grid-4,.grid-3,.grid-2,.related,.footer-grid{grid-template-columns:1fr}.hero{padding-top:56px}.glossary-grid{columns:1}}