:root{--iana-bg: #f7f8fb;--iana-text: #172033;--iana-muted: #5c667a;--iana-blue: #183b8f;--iana-blue-soft: #eef3ff;--iana-border: #dfe5f2;--iana-card: #ffffff;--iana-radius: 22px;--iana-max: 1120px}*{box-sizing:border-box}html{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--iana-bg);color:var(--iana-text)}body{margin:0;line-height:1.7}a{color:inherit}.site-header{max-width:var(--iana-max);margin:0 auto;padding:22px 20px;display:flex;justify-content:space-between;align-items:center}.site-logo{font-weight:800;text-decoration:none;color:var(--iana-blue)}.site-nav{display:flex;gap:18px;font-size:.95rem}.site-nav a{text-decoration:none;color:var(--iana-muted)}.site-footer{max-width:var(--iana-max);margin:60px auto 0;padding:30px 20px;color:var(--iana-muted);font-size:.9rem}.iana-hero{background:linear-gradient(135deg,#122c71,#1f4fbf);color:#fff;padding:70px 20px}.iana-hero-inner{max-width:var(--iana-max);margin:0 auto}.iana-badge{display:inline-block;margin-bottom:18px;padding:6px 12px;border-radius:999px;background:#ffffff26;font-size:.85rem}.iana-hero h1{max-width:820px;margin:0 0 20px;font-size:clamp(2rem,5vw,4rem);line-height:1.05}.iana-hero p{max-width:760px;margin:0;font-size:1.15rem;color:#e7ecff}.iana-section{max-width:var(--iana-max);margin:40px auto;padding:0 20px}.iana-card{background:var(--iana-card);border:1px solid var(--iana-border);border-radius:var(--iana-radius);padding:28px;box-shadow:0 10px 30px #14285a0f}.iana-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}@media(max-width:760px){.site-header{align-items:flex-start;gap:12px;flex-direction:column}.iana-grid{grid-template-columns:1fr}.iana-hero{padding:48px 20px}}.article-content h1,.article-content h2,.article-content h3{line-height:1.2;margin-top:2rem}.article-content p{margin:1.2rem 0}.article-content ul{padding-left:1.5rem}.article-content img{max-width:100%;border-radius:18px}.breadcrumbs{margin-bottom:18px;font-size:.9rem;color:#dce5ff}.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0}.breadcrumbs li:after{content:"›";margin-left:8px;opacity:.7}.breadcrumbs li:last-child:after{content:""}.breadcrumbs a{color:#fff;text-decoration:none}.article-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;color:#e7ecff;font-size:.95rem}.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.article-tags span{padding:5px 10px;border-radius:999px;background:#ffffff29;font-size:.85rem}.article-shell{max-width:900px}.article-content{font-size:1.05rem}.article-content h2{margin-top:2.4rem;font-size:1.8rem}.article-content h3{margin-top:2rem;font-size:1.35rem}.article-content p{margin:1.15rem 0}.article-content a{color:var(--iana-blue);font-weight:600}.article-content blockquote{margin:2rem 0;padding:1rem 1.4rem;border-left:4px solid var(--iana-blue);background:var(--iana-blue-soft);border-radius:12px}.article-content code{padding:.15rem .35rem;border-radius:6px;background:#a5a5a5;color:#f8fafc;font-family:SF Mono,SF Mono,Consolas,Liberation Mono,Menlo,Courier,monospace}.article-content pre{overflow-x:auto;padding:1rem;border-radius:14px;background:#101827;color:#f8fafc}.article-content section{scroll-margin-top:90px}.article-list{display:grid;gap:22px}.article-preview h2{margin:.3rem 0 .6rem;font-size:1.55rem;line-height:1.25}.article-preview h2 a{color:var(--iana-text);text-decoration:none}.article-preview h2 a:hover{color:var(--iana-blue)}.article-preview-meta{margin:0;color:var(--iana-muted);font-size:.92rem}.article-preview-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.article-preview-tags span{padding:4px 9px;border-radius:999px;background:var(--iana-blue-soft);color:var(--iana-blue);font-size:.82rem}.faq-block{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--iana-border)}.faq-list{display:grid;gap:12px}.faq-item{border:1px solid var(--iana-border);border-radius:14px;background:#fff;overflow:hidden}.faq-item summary{cursor:pointer;padding:1rem 1.1rem;font-weight:700;color:var(--iana-text)}.faq-item summary::marker{color:var(--iana-blue)}.faq-answer{padding:0 1.1rem 1rem;color:var(--iana-muted)}.mermaid{margin:2rem 0;padding:1rem;overflow-x:auto;background:#fff;border:1px solid var(--iana-border);border-radius:18px}.iana-figure{margin:2.5rem 0}.iana-figure img{width:100%;height:auto;display:block;border-radius:20px}.iana-figure figcaption{margin-top:.7rem;color:var(--iana-muted);font-size:.92rem;text-align:center}.callout{margin:2rem 0;padding:1.2rem 1.4rem;border-radius:18px;border:1px solid var(--iana-border);background:#f8faff}.callout.blue{background:#eef4ff;border-color:#c9d9ff}.callout.green{background:#edf9f1;border-color:#bfe7cc}.definition-box,.takeaway-box,.sources{margin:2rem 0;padding:1.2rem 1.4rem;border-radius:18px;border:1px solid var(--iana-border);background:#fff}.definition-box{background:#f6f8fc}.takeaway-box{background:#fffaf0}.sources{border-top:1px solid var(--iana-border);background:transparent;padding-left:0;padding-right:0}.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:2rem 0}.stat-card{padding:1.4rem;border-radius:18px;background:#fff;border:1px solid var(--iana-border);box-shadow:0 8px 22px #14285a0f}.stat-card .value{font-size:2rem;font-weight:800;color:var(--iana-blue);line-height:1}.stat-card .label{margin-top:.7rem;font-weight:700}.stat-card .benchmark{margin-top:.6rem;color:var(--iana-muted);font-size:.9rem}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:1.5rem 0}.related-item{padding:1.2rem;border-radius:18px;border:1px solid var(--iana-border);background:#fff}.related-item h3{margin-top:0;font-size:1.1rem}@media(max-width:760px){.stat-grid,.related-grid{grid-template-columns:1fr}}.category-grid{display:grid;gap:24px}.category-card{display:grid;grid-template-columns:260px 1fr;gap:22px;background:#fff;border:1px solid var(--iana-border);border-radius:20px;overflow:hidden;box-shadow:0 8px 22px #14285a0d}.category-card-image img{width:100%;height:100%;min-height:180px;object-fit:cover;display:block}.category-card-body{padding:22px}.category-card-meta{margin:0 0 8px;color:var(--iana-muted);font-size:.9rem}.category-card h2{margin:0 0 10px;font-size:1.35rem;line-height:1.25}.category-card h2 a{color:var(--iana-text);text-decoration:none}.category-card h2 a:hover{color:var(--iana-blue)}@media(max-width:760px){.category-card{grid-template-columns:1fr}.category-card-image img{height:auto}}.site-header{position:sticky;top:0;z-index:1000;background:#ffffffeb;backdrop-filter:blur(10px);border-bottom:1px solid var(--iana-border)}.site-header-inner{max-width:1240px;margin:0 auto;padding:0 24px;height:74px;display:flex;align-items:center;justify-content:space-between}.site-logo{font-size:1.15rem;font-weight:800;color:var(--iana-text);text-decoration:none}.site-header{position:relative;z-index:100;background:#fff;border-bottom:1px solid rgba(15,23,42,.08)}.site-header-inner{max-width:1180px;min-height:76px;margin:0 auto;padding:0 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1.25rem}.site-logo{display:flex;align-items:center;flex-shrink:0}.main-nav{display:flex;align-items:center;margin-left:auto}.main-menu{display:flex;align-items:center;gap:.12rem;list-style:none;margin:0;padding:0}.menu-item{position:relative}.menu-item>a{display:flex;align-items:center;min-height:76px;padding:0 .62rem;color:#0f172a;text-decoration:none;font-weight:700;font-size:.82rem;line-height:1.15;white-space:nowrap;border-bottom:3px solid transparent;transition:color .18s ease,background-color .18s ease,border-color .18s ease}.menu-item>a:hover,.menu-item>a:focus-visible{color:#1d4ed8;background:#f8fafc;border-bottom-color:#1d4ed8}.menu-item>a:focus-visible{outline:3px solid rgba(37,99,235,.22);outline-offset:-3px}.menu-item.has-submenu>a:after{content:"▾";margin-left:.35rem;font-size:.68rem;color:#64748b}.menu-item.has-submenu>a:hover:after,.menu-item.has-submenu>a:focus-visible:after{color:#1d4ed8}.menu-item>a.search-link{color:#1d4ed8;background:#eff6ff;border-radius:999px;min-height:auto;padding:.55rem .85rem;margin-left:.35rem;border-bottom:0}.menu-item>a.search-link:before{content:"⌕";margin-right:.35rem;font-size:.95rem;line-height:1}.menu-item>a.search-link:hover,.menu-item>a.search-link:focus-visible{color:#fff;background:#1d4ed8;border-bottom:0}.submenu{position:absolute;top:100%;left:0;z-index:200;min-width:260px;margin:0;padding:.65rem;list-style:none;background:#fff;border:1px solid rgba(15,23,42,.1);border-radius:16px;box-shadow:0 18px 45px #0f172a1f;opacity:0;visibility:hidden;transform:translateY(8px);pointer-events:none;transition:opacity .18s ease,transform .18s ease,visibility .18s ease}.menu-item:hover>.submenu,.menu-item:focus-within>.submenu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}.submenu li{margin:0;padding:0}.submenu li+li{margin-top:.15rem}.submenu li a{display:block;padding:.68rem .85rem;color:#334155;text-decoration:none;font-size:.9rem;font-weight:600;line-height:1.35;border-radius:10px;transition:color .18s ease,background-color .18s ease}.submenu li a:hover,.submenu li a:focus-visible{background:#eff6ff;color:#1d4ed8}.submenu li a:focus-visible{outline:2px solid rgba(37,99,235,.25);outline-offset:2px}.mobile-menu-toggle{display:none;border:0;background:transparent;color:#0f172a;font-size:2rem;line-height:1;cursor:pointer}@media(max-width:1120px){.site-header-inner{max-width:100%;padding:0 1rem;gap:.8rem}.site-logo img{width:118px}.menu-item>a{padding:0 .48rem;font-size:.78rem}.menu-item>a.search-link{padding:.5rem .75rem;margin-left:.2rem}}@media(max-width:940px){.site-header-inner{min-height:74px}.mobile-menu-toggle{display:inline-flex;align-items:center;justify-content:center}.main-nav{display:none;position:absolute;top:74px;left:0;width:100%;background:#fff;border-top:1px solid rgba(15,23,42,.08);box-shadow:0 18px 38px #0f172a1a}.main-nav.open{display:block}.main-menu{display:flex;flex-direction:column;align-items:stretch;gap:0;padding:.5rem 1.25rem 1.25rem}.menu-item{position:static;border-bottom:1px solid rgba(15,23,42,.08)}.menu-item:last-child{border-bottom:0}.menu-item>a{min-height:0;padding:1rem 0;font-size:1rem;font-weight:800;border-bottom:0}.menu-item>a:hover,.menu-item>a:focus-visible{background:transparent;border-bottom:0}.menu-item.has-submenu>a:after{margin-left:auto;font-size:.75rem}.menu-item>a.search-link{display:inline-flex;width:fit-content;margin:.8rem 0 .3rem;padding:.65rem 1rem}.submenu,.menu-item:hover>.submenu,.menu-item:focus-within>.submenu{display:none;position:static;min-width:0;padding:0 0 .9rem 1rem;border:0;border-radius:0;box-shadow:none;background:transparent;opacity:1;visibility:visible;transform:none;pointer-events:auto}.menu-item.open>.submenu{display:block}.submenu li+li{margin-top:0}.submenu li a{padding:.45rem 0;color:#475569;font-size:.94rem;font-weight:600;border-radius:0}.submenu li a:hover,.submenu li a:focus-visible{background:transparent;color:#1d4ed8}}.home-hero{padding:5rem 1.5rem 4rem;background:radial-gradient(circle at top left,rgba(59,130,246,.22),transparent 35%),linear-gradient(135deg,#0f172a,#1e293b 55%,#312e81);color:#fff}.home-hero-inner{max-width:1100px;margin:0 auto}.home-kicker{display:inline-block;margin-bottom:1rem;color:#fde68a;font-weight:700;letter-spacing:.04em;text-transform:uppercase;font-size:.9rem}.home-hero h1{max-width:850px;font-size:clamp(2.4rem,6vw,4.8rem);line-height:1.05;margin:0 0 1.5rem}.home-lead{max-width:760px;font-size:1.2rem;line-height:1.8;color:#dbeafe}.home-actions{display:flex;flex-wrap:wrap;gap:1rem;margin-top:2rem}.home-btn{display:inline-flex;align-items:center;justify-content:center;padding:.85rem 1.2rem;border-radius:999px;font-weight:700;text-decoration:none}.home-btn.primary{background:#facc15;color:#111827}.home-btn.secondary{border:1px solid rgba(255,255,255,.35);color:#fff}.home-section{max-width:1180px;margin:0 auto;padding:4rem 1.5rem}.home-section.muted{max-width:none;background:#f8fafc}.home-section.muted .home-section-head,.home-section.muted .home-featured-list{max-width:1180px;margin-left:auto;margin-right:auto}.home-section-head{margin-bottom:2rem}.home-section-head h2{font-size:clamp(1.8rem,3vw,2.6rem);margin-bottom:.5rem;color:#0f172a}.home-section-head p{color:#475569;font-size:1.05rem}.home-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem}.home-card{display:block;padding:1.5rem;border-radius:20px;background:#fff;border:1px solid #e2e8f0;text-decoration:none;color:inherit;box-shadow:0 12px 30px #0f172a0f}.home-card h3{margin:0 0 .6rem;color:#1e3a8a}.home-card p{margin:0;color:#475569;line-height:1.7}.home-featured-list{display:grid;gap:.9rem}.home-featured-list a{display:block;padding:1rem 1.2rem;border-radius:14px;background:#fff;color:#1e3a8a;font-weight:700;text-decoration:none;border:1px solid #e2e8f0}.home-articles{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.4rem}.home-article-card{overflow:hidden;border-radius:22px;background:#fff;border:1px solid #e2e8f0;box-shadow:0 12px 30px #0f172a0f}.home-article-image{display:block;aspect-ratio:16 / 9;background:#e2e8f0;overflow:hidden}.home-article-image img{width:100%;height:100%;object-fit:cover;display:block}.home-article-body{padding:1.2rem}.home-article-meta{color:#64748b;font-size:.9rem;margin-bottom:.5rem}.home-article-body h3{margin:0 0 .75rem;font-size:1.15rem}.home-article-body h3 a{color:#0f172a;text-decoration:none}.home-article-body p{color:#475569;line-height:1.65}.site-logo{display:inline-flex;align-items:center;text-decoration:none}.site-logo img{display:block;width:132px;height:auto}@media(max-width:768px){.site-logo img{width:110px}}.site-header{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid #e2e8f0}.site-header-inner{max-width:1180px;margin:0 auto;padding:.9rem 1.5rem;display:flex;align-items:center;justify-content:space-between}.cookie-consent{position:relative;z-index:9999}.cookie-banner{position:fixed;left:24px;right:24px;bottom:24px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1.25rem;align-items:center;padding:1rem;color:#fff;background:#111827;border:1px solid rgba(255,255,255,.12);border-radius:16px;box-shadow:0 20px 60px #00000047}.cookie-banner-text{display:grid;gap:.35rem}.cookie-banner-text strong{font-size:1rem}.cookie-banner-text p{max-width:820px;margin:0;font-size:.92rem;line-height:1.5;color:#ffffffe0}.cookie-link{color:#93c5fd;font-weight:700;text-decoration:underline;text-underline-offset:3px}.cookie-actions{display:flex;flex-wrap:wrap;gap:.65rem;justify-content:flex-end}.cookie-btn{border:0;border-radius:10px;padding:.72rem 1rem;font-weight:800;line-height:1;cursor:pointer;transition:transform .15s ease,opacity .15s ease,background-color .15s ease}.cookie-btn:hover{transform:translateY(-1px)}.cookie-btn:focus-visible,.cookie-tab:focus-visible,.cookie-close:focus-visible{outline:3px solid #93c5fd;outline-offset:3px}.cookie-btn-primary{color:#fff;background:#2563eb}.cookie-btn-secondary{color:#111827;background:#f9fafb}.cookie-btn-ghost{color:#fff;background:#374151}.cookie-modal-backdrop{position:fixed;inset:0;z-index:10000;display:grid;place-items:center;padding:1rem;background:#111827ad}.cookie-modal{width:min(920px,100%);max-height:min(760px,calc(100vh - 2rem));overflow:hidden;display:grid;grid-template-rows:auto 1fr auto;background:#fff;color:#111827;border-radius:18px;box-shadow:0 30px 90px #00000059}.cookie-modal-header{display:flex;justify-content:space-between;gap:1rem;align-items:flex-start;padding:1.25rem 1.5rem;border-bottom:1px solid #e5e7eb}.cookie-modal-logo{display:inline-block;margin-bottom:.4rem;font-size:.78rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:#2563eb}.cookie-modal-header h2{margin:0;font-size:clamp(1.25rem,2vw,1.65rem);line-height:1.2}.cookie-close{width:40px;height:40px;border:0;border-radius:999px;color:#111827;background:#f3f4f6;font-size:1.6rem;line-height:1;cursor:pointer}.cookie-modal-body{min-height:420px;overflow:auto;display:grid;grid-template-columns:290px 1fr}.cookie-tabs{padding:1rem;background:#f9fafb;border-right:1px solid #e5e7eb}.cookie-tab{width:100%;display:block;padding:.95rem 1rem;border:0;border-left:4px solid transparent;color:#111827;background:transparent;text-align:left;font-weight:800;cursor:pointer}.cookie-tab+.cookie-tab{border-top:1px solid #e5e7eb}.cookie-tab.is-active{border-left-color:#2563eb;background:#fff}.cookie-panels{padding:1.25rem 1.5rem}.cookie-panel{display:none}.cookie-panel.is-active{display:block}.cookie-panel h3{margin:0 0 .75rem;font-size:1.15rem}.cookie-panel p{max-width:62ch;margin:0 0 1rem;color:#374151;line-height:1.55}.cookie-panel-title{display:flex;gap:1rem;justify-content:space-between;align-items:flex-start}.cookie-always-on{color:#2563eb;font-weight:900;white-space:nowrap}.cookie-small{font-size:.9rem;color:#6b7280!important}.cookie-switch{position:relative;display:inline-flex;flex:0 0 auto;align-items:center;cursor:pointer}.cookie-switch input{position:absolute;opacity:0;pointer-events:none}.cookie-switch span{width:54px;height:30px;display:inline-block;position:relative;border-radius:999px;background:#9ca3af;transition:background-color .15s ease}.cookie-switch span:before{content:"";position:absolute;top:4px;left:4px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .15s ease}.cookie-switch input:checked+span{background:#2563eb}.cookie-switch input:checked+span:before{transform:translate(24px)}.cookie-modal-footer{display:flex;justify-content:space-between;gap:1rem;padding:1rem 1.5rem;background:#f9fafb;border-top:1px solid #e5e7eb}.cookie-modal-open{overflow:hidden}@media(max-width:820px){.cookie-banner{grid-template-columns:1fr;left:12px;right:12px;bottom:12px}.cookie-actions{width:100%;justify-content:stretch}.cookie-actions .cookie-btn{flex:1 1 100%}.cookie-modal{max-height:calc(100vh - 1rem);border-radius:14px}.cookie-modal-body{grid-template-columns:1fr;min-height:auto}.cookie-tabs{display:flex;gap:.5rem;overflow-x:auto;border-right:0;border-bottom:1px solid #e5e7eb}.cookie-tab{min-width:220px;border-left:0;border-bottom:4px solid transparent}.cookie-tab.is-active{border-left-color:transparent;border-bottom-color:#2563eb}.cookie-modal-footer{flex-direction:column}.cookie-modal-footer .cookie-btn{width:100%}}.not-found-search{display:flex;gap:.75rem;max-width:560px;margin:2rem auto}.not-found-search input{flex:1;padding:.85rem 1rem;border:1px solid #cbd5e1;border-radius:10px}.not-found-search button{padding:.85rem 1.1rem;border:0;border-radius:10px;background:#1e3a8a;color:#fff;font-weight:700;cursor:pointer}@media(max-width:640px){.not-found-search{flex-direction:column}}.iana-contact-page{background:#f6f8fc}.iana-contact-hero{background:linear-gradient(135deg,#102a5c,#183b7a 55%,#0f172a);color:#fff;padding:4.5rem 1.25rem 3.5rem}.iana-contact-inner{max-width:980px;margin:0 auto}.iana-contact-hero h1{margin:0 0 1rem;font-size:clamp(2.1rem,5vw,3.7rem);line-height:1.08;letter-spacing:-.035em}.iana-contact-hero p{max-width:760px;font-size:1.08rem;line-height:1.75;color:#ffffffe0}.iana-kicker{margin:0 0 .75rem;color:#fde68a;font-weight:700;text-transform:uppercase;letter-spacing:.12em;font-size:.82rem}.iana-contact-section{padding:3.5rem 1.25rem 5rem}.iana-contact-grid{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.35fr);gap:2rem;align-items:start}.iana-contact-info,.iana-contact-form{background:#fff;border:1px solid rgba(15,23,42,.08);border-radius:24px;box-shadow:0 18px 45px #0f172a14}.iana-contact-info{padding:2rem}.iana-contact-info h2{margin-top:0;color:#0f172a;font-size:1.45rem}.iana-contact-info p,.iana-contact-info li{color:#334155;line-height:1.65}.iana-contact-info ul{padding-left:1.2rem}.iana-contact-info li{margin-bottom:.65rem}.iana-contact-links{display:flex;flex-wrap:wrap;gap:.7rem;margin:1.25rem 0 1.75rem}.iana-contact-links a{display:inline-flex;align-items:center;border-radius:999px;padding:.55rem .95rem;background:#eff6ff;color:#1d4ed8;font-weight:700;text-decoration:none}.iana-contact-links a:hover{background:#dbeafe}.iana-contact-note{margin-top:1.5rem;padding:1rem;border-left:4px solid #2563eb;background:#eff6ff;color:#1e3a8a;border-radius:12px}.iana-contact-form{padding:2rem}.form-row{margin-bottom:1.2rem}.form-row label{display:block;margin-bottom:.45rem;font-weight:700;color:#0f172a}.form-row input,.form-row select,.form-row textarea{width:100%;box-sizing:border-box;border:1px solid #cbd5e1;border-radius:14px;padding:.9rem 1rem;font:inherit;color:#0f172a;background:#fff}.form-row textarea{resize:vertical}.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:3px solid rgba(37,99,235,.18);border-color:#2563eb}.form-consent{display:flex;gap:.7rem;align-items:flex-start;margin:1.25rem 0;color:#334155;line-height:1.55}.form-consent input{margin-top:.25rem}.form-privacy-note{font-size:.92rem;line-height:1.65;color:#475569}.form-privacy-note a{color:#1d4ed8;font-weight:700}.iana-contact-submit{margin-top:1rem;display:inline-flex;justify-content:center;align-items:center;border:0;border-radius:999px;padding:.95rem 1.55rem;background:#1d4ed8;color:#fff;font-weight:800;text-decoration:none;cursor:pointer;box-shadow:0 12px 24px #1d4ed83d}.iana-contact-submit:hover{background:#1e40af}.iana-honeypot{position:absolute;left:-9999px;opacity:0}@media(max-width:860px){.iana-contact-grid{grid-template-columns:1fr}.iana-contact-hero{padding-top:3.5rem;padding-bottom:3rem}.iana-contact-info,.iana-contact-form{padding:1.35rem;border-radius:20px}}.iana-contact-faq{background:#fff;padding:4rem 1.25rem 5rem}.iana-contact-faq-inner{max-width:1120px;margin:0 auto}.iana-contact-faq h2{margin:0 0 2rem;color:#0f172a;font-size:clamp(1.8rem,3vw,2.5rem);line-height:1.15;letter-spacing:-.03em}.iana-faq-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem}.iana-faq-card{background:#f8fafc;border:1px solid rgba(15,23,42,.08);border-radius:20px;padding:1.4rem;box-shadow:0 14px 32px #0f172a0f}.iana-faq-card h3{margin:0 0 .75rem;color:#0f172a;font-size:1.05rem;line-height:1.35}.iana-faq-card p{margin:0;color:#475569;line-height:1.65;font-size:.96rem}@media(max-width:980px){.iana-faq-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){.iana-contact-faq{padding:3rem 1rem 4rem}.iana-faq-grid{grid-template-columns:1fr}.iana-faq-card{padding:1.2rem;border-radius:18px}}.iana-search-page{background:#f6f8fc}.iana-search-hero{background:radial-gradient(circle at top left,rgba(74,144,226,.28),transparent 36%),linear-gradient(135deg,#102a5c,#183b7a 52%,#0f172a);color:#fff;padding:4.5rem 1.25rem 3.5rem}.iana-search-inner{max-width:980px;margin:0 auto}.iana-search-hero h1{margin:0 0 1rem;font-size:clamp(2.1rem,5vw,3.7rem);line-height:1.08;letter-spacing:-.035em}.iana-search-hero p{max-width:760px;font-size:1.08rem;line-height:1.75;color:#ffffffe0}.iana-search-section{padding:3.5rem 1.25rem 5rem}.iana-search-box{max-width:980px;margin:0 auto;background:#fff;border:1px solid rgba(15,23,42,.08);border-radius:24px;box-shadow:0 18px 45px #0f172a14;padding:2rem}.iana-search-box .pagefind-ui{font-family:inherit}.iana-search-box .pagefind-ui__form{margin-bottom:2rem}.iana-search-box .pagefind-ui__search-input{border-radius:999px;border:1px solid #cbd5e1;padding:1rem 1.25rem;font-size:1rem}.iana-search-box .pagefind-ui__search-input:focus{outline:3px solid rgba(37,99,235,.18);border-color:#2563eb}.iana-search-box .pagefind-ui__result{border-top:1px solid rgba(15,23,42,.08);padding:1.35rem 0}.iana-search-box .pagefind-ui__result-title{font-size:1.1rem;font-weight:800;color:#0f172a}.iana-search-box .pagefind-ui__result-title a{color:#1d4ed8;text-decoration:none}.iana-search-box .pagefind-ui__result-title a:hover{text-decoration:underline}.iana-search-box .pagefind-ui__result-excerpt{color:#475569;line-height:1.65}.iana-search-box .pagefind-ui__button{border-radius:999px;background:#1d4ed8;color:#fff;font-weight:800;border:0}.iana-search-box .pagefind-ui__button:hover{background:#1e40af}@media(max-width:720px){.iana-search-hero{padding-top:3.5rem;padding-bottom:3rem}.iana-search-box{padding:1.25rem;border-radius:20px}}.iana-404-section{min-height:calc(100vh - 76px);display:flex;align-items:center;justify-content:center;padding:4rem 1.25rem;background:radial-gradient(circle at top left,rgba(37,99,235,.12),transparent 34%),linear-gradient(180deg,#f8fafc,#eef2ff)}.iana-404-card{width:100%;max-width:920px;text-align:center;background:#fff;border:1px solid rgba(15,23,42,.08);border-radius:28px;box-shadow:0 22px 60px #0f172a17;padding:2rem 2rem 3rem}.iana-404-image-wrap{max-width:680px;margin:0 auto 1.8rem;border-radius:24px;overflow:hidden;background:#e0e7ff}.iana-404-image{display:block;width:100%;height:auto}.iana-404-card h1{margin:0 0 1rem;color:#0f172a;font-size:clamp(2.2rem,5vw,4rem);line-height:1.05;letter-spacing:-.04em}.iana-404-text{max-width:620px;margin:0 auto 1.8rem;color:#475569;font-size:1.08rem;line-height:1.75}.iana-404-actions{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;align-items:center}.iana-404-home-link{display:inline-flex;justify-content:center;align-items:center;border-radius:999px;padding:.95rem 1.35rem;background:#f1f5f9;color:#0f172a;font-weight:800;text-decoration:none}.iana-404-home-link:hover{background:#e2e8f0;color:#1d4ed8}@media(max-width:640px){.iana-404-section{padding:2.5rem 1rem}.iana-404-card{padding:1.25rem 1.25rem 2.2rem;border-radius:22px}.iana-404-image-wrap{border-radius:18px;margin-bottom:1.4rem}.iana-404-actions{flex-direction:column}.iana-404-actions a{width:100%}}:root{--accent: #0ea5e9;--border: #e2e8f0;--card: #ffffff;--openai: #10b981;--google: #60a5fa;--iana-shadow-sm: 0 1px 4px rgba(0, 0, 0, .04);--iana-border: #cbd5e1;--iana-blue: #3b82f6;--iana-accent: #0ea5e9;--iana-shadow-lg: 0 8px 22px rgba(20, 40, 90, .06);--iana-shadow-xl: 0 12px 28px rgba(20, 40, 90, .1)}.article-content{color:#334155}.article-content section{padding:42px 0;scroll-margin-top:90px}.article-content section+section{border-top:1px solid var(--border)}.article-content h2{font-size:1.75rem;font-weight:800;margin-bottom:16px;color:#0f172a}.article-content h3{font-size:1.2rem;font-weight:700;margin:28px 0 10px;color:#1e293b}.article-content h4{font-size:1rem;font-weight:700;margin:20px 0 8px;color:#334155}.article-content .callout{border-left:4px solid var(--accent);background:#fffbeb;padding:16px 20px;border-radius:0 8px 8px 0;margin:24px 0;font-size:.97rem}.article-content .callout.blue{border-color:var(--google);background:#eff6ff}.article-content .callout.green{border-color:var(--openai);background:#f0fdf4}.article-content .callout strong{display:block;margin-bottom:4px;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:#64748b}.article-content .definition-box,.article-content .takeaway-box{margin:24px 0;padding:20px;border:1px solid var(--border);border-radius:12px;background:#f8fafc}.article-content .definition-box label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:red;margin-bottom:8px}.article-content .takeaway-box{background:#fffaf0}.article-content .keypoints{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px;margin:24px 0;box-shadow:var(--iana-shadow-sm)}.article-content .keypoints h3{margin-top:0;color:#0f172a}.article-content .keypoints ul{margin-bottom:0}.article-content .steps{counter-reset:step;display:grid;gap:14px;margin:24px 0}.article-content .step{position:relative;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px 18px 18px 60px}.article-content .step:before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:18px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--iana-accent);color:#faf8f8;font-weight:800;font-size:.9rem}.article-content .stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin:24px 0}.article-content .stat-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px 16px;text-align:center;box-shadow:0 1px 4px #0000000a}.article-content .stat-card .value{font-size:2rem;font-weight:800;color:var(--iana-blue)}.article-content .stat-card .value.gpt{color:var(--openai)}.article-content .stat-card .value.gem{color:var(--google)}.article-content .stat-card .label{font-size:.78rem;color:#64748b;margin-top:4px}.article-content .stat-card .benchmark{font-size:.7rem;color:#94a3b8;font-style:italic;margin-top:2px}.article-content .compare-table{width:100%;border-collapse:collapse;font-size:.93rem;margin:24px 0;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000000f}.article-content .compare-table thead{background:#0f172a;color:#fff}.article-content .compare-table th{padding:14px 18px;text-align:left;font-weight:700;font-size:.85rem}.article-content .compare-table td{padding:12px 18px;border-bottom:1px solid var(--border);vertical-align:middle}.article-content .compare-table tbody tr:nth-child(2n){background:#f8fafc}.article-content .compare-table tbody tr:last-child td{border-bottom:none}.article-content .compare-table .winner{font-weight:700}.article-content .badge-win,.article-content .badge-tie{display:inline-block;border-radius:999px;font-size:.72rem;font-weight:700;padding:2px 10px}.article-content .badge-win{background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0}.article-content .badge-tie{background:#fefce8;color:#854d0e;border:1px solid #fde68a}.article-content .profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.article-content .profile-card{border:1px solid var(--border);border-radius:12px;padding:24px;background:var(--card)}.article-content .profile-card h4{font-size:1rem;margin:0 0 12px;padding-bottom:8px;border-bottom:2px solid}.article-content .profile-card.gpt h4{border-color:var(--openai);color:var(--openai)}.article-content .profile-card.gem h4{border-color:var(--google);color:var(--google)}.article-content .profile-card ul{padding-left:18px;color:#334155;font-size:.93rem}.article-content .profile-card li{margin-bottom:6px}.article-content .verdict-box{background:linear-gradient(135deg,#0f172a,#1e3a5f);color:#fff;border-radius:16px;padding:40px;margin:24px 0}.article-content .verdict-box h3{color:#34d399;margin-top:0}.article-content .verdict-box p{color:#cbd5e1}.article-content .verdict-box .split{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}.article-content .verdict-box .split div{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:20px}.article-content .verdict-box .split h4{color:#e2e8f0;margin:0 0 10px}.article-content .verdict-box .split ul{padding-left:16px;color:#94a3b8;font-size:.9rem}.article-content .related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0}.article-content .related-item{padding:20px;border-radius:14px;border:1px solid var(--border);background:#fff}.article-content .related-item h3{margin-top:0;font-size:1.1rem}.article-content .sources{background:#f1f5f9;border-radius:12px;padding:24px;font-size:.85rem;color:#475569;margin-top:32px}.article-content .sources h3{font-size:1rem;margin-bottom:12px;color:#0f172a}.article-content .sources ul{padding-left:18px}.article-content .sources li{margin-bottom:6px}.article-content .sources a{color:#2563eb}.article-content figure,.article-content .iana-figure{margin:2.5rem 0}.article-content figcaption{margin-top:.7rem;color:#64748b;font-size:.92rem;text-align:center}.article-content .code-block{margin:28px 0;border-radius:14px;overflow:hidden;border:1px solid var(--border);background:#0f172a}.article-content .code-header{display:flex;justify-content:space-between;align-items:center;background:#020617;padding:8px 14px;font-size:.75rem;font-weight:700;letter-spacing:.05em;color:#94a3b8}.article-content .code-header span{text-transform:uppercase}.article-content .code-content{padding:18px 20px;overflow-x:auto}.article-content .code-content pre{margin:0;color:#e2e8f0;font-size:.9rem;line-height:1.6}.article-content .code-content code{background:none;color:inherit;padding:0}.article-content .dataset-box{margin:30px 0;padding:20px 22px;border-radius:14px;border:1px solid var(--iana-border);background:#f8fafc}.article-content .dataset-box h3{margin-top:0;font-size:1.05rem;color:#0f172a}.article-content .dataset-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:16px 0 8px}.article-content .dataset-meta div{background:#f4e6e6;border:2px solid var(--iana-border);padding:10px 12px;border-radius:10px;font-size:.85rem}.article-content .dataset-meta strong{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:#64748b;margin-bottom:3px}@media(max-width:760px){.article-content section{padding:34px 0}.article-content h2{font-size:1.4rem}.article-content .profile-grid,.article-content .verdict-box .split,.article-content .related-grid{grid-template-columns:1fr}.article-content .compare-table{font-size:.82rem}.article-content .compare-table th,.article-content .compare-table td{padding:10px 12px}.article-content .verdict-box{padding:26px}}.article-content .svg-neural-network{margin:32px 0;text-align:center}.article-content .svg-neural-network svg{width:100%;max-width:900px;height:auto;display:block;margin:0 auto}.article-content .svg-neural-network figcaption{margin-top:12px;font-size:.95rem;color:#475569;line-height:1.5}.article-content #dataset{margin:2rem 0;padding:1.5rem;border-left:4px solid #2c7be5;background:#f7f9fc;border-radius:6px}.article-content #dataset h2{margin-top:0;font-size:1.4rem;color:#1a1a1a}.article-content .dataset-description{margin-bottom:1rem;font-size:1rem;line-height:1.6}.article-content .dataset-source{font-size:.95rem;color:#555}.article-content .dataset-source:before{content:"Source : ";font-weight:600}.article-content .dataset-license{font-size:.9rem;color:#666}.article-content .dataset-license:before{content:"Licence : ";font-weight:600}.article-content #dataset a{color:#2c7be5;text-decoration:none}.article-content #dataset a:hover{text-decoration:underline}@media(max-width:768px){.article-content #dataset{padding:1.2rem}}.site-footer[data-astro-cid-sz7xmlte]{margin-top:5rem;background:#0f172a;color:#e2e8f0;padding:4rem 1.5rem 2rem}.footer-container[data-astro-cid-sz7xmlte]{max-width:1200px;margin:0 auto}.footer-grid[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:3rem}.site-footer[data-astro-cid-sz7xmlte] h3[data-astro-cid-sz7xmlte]{color:#fff;margin-bottom:1rem;font-size:1.1rem}.site-footer[data-astro-cid-sz7xmlte] p[data-astro-cid-sz7xmlte]{line-height:1.7;color:#cbd5e1}.site-footer[data-astro-cid-sz7xmlte] ul[data-astro-cid-sz7xmlte]{list-style:none;padding:0;margin:0}.site-footer[data-astro-cid-sz7xmlte] li[data-astro-cid-sz7xmlte]{margin-bottom:.7rem}.site-footer[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:#cbd5e1;text-decoration:none;transition:color .2s ease}.site-footer[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:#fff}.footer-bottom[data-astro-cid-sz7xmlte]{margin-top:3rem;padding-top:1.5rem;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:.95rem;color:#94a3b8}