@layer base, layout, components, responsive;
@layer base {
:root{--paper:#f6f3ea;--ink:#182820;--muted:#506158;--green:#183c2c;--line:#cecfc2;--lime:#d6eb8c;--rust:#943b25;--white:#fffef9;color-scheme:light;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}html{scroll-padding-top:24px}body{margin:0;font-size:17px;line-height:1.65}a{color:var(--green);text-underline-offset:.2em;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}:focus-visible{outline:3px solid var(--rust);outline-offset:4px}h1,h2,h3,p,figure{margin:0 0 1rem}h1,h2,h3{line-height:1.13;letter-spacing:-.035em;text-wrap:balance}h1,h2{font-family:Georgia,'Times New Roman',serif;font-weight:500}h1{font-size:clamp(2.2rem,4.5vw,4.5rem);max-width:1000px}h2{font-size:clamp(1.7rem,2.8vw,2.6rem);margin-top:2rem}h3{font-size:1.4rem}small{display:block;font-size:.8rem;line-height:1.5;color:var(--muted)}strong,b{font-weight:700}img,svg{max-width:100%;height:auto}[hidden]{display:none!important}section,article,aside{min-width:0}p{max-width:78ch}li{margin-bottom:.5rem}::selection{background:var(--lime);color:var(--ink)}
}
@layer layout {
.independence-strip{display:flex;justify-content:space-between;padding:8px max(5vw,20px);background:var(--ink);color:var(--paper);font-size:.72rem;letter-spacing:.04em}.site-header,.breadcrumbs,main,.site-footer{max-width:1280px;margin-inline:auto;padding-inline:40px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-block:26px;border-bottom:1px solid var(--line)}.site-header nav{display:flex;flex-wrap:wrap;gap:12px 25px}.site-header nav a{font-size:.9rem;text-decoration:none;padding-block:10px}.site-header nav a[aria-current]{border-bottom:2px solid var(--green)}.brand{display:flex;gap:12px;align-items:center;font-size:1rem;line-height:1.2;text-decoration:none;letter-spacing:-.03em}.brand strong{display:block;font-size:1.35rem}.brand-mark{display:block;position:relative;background:var(--green);color:var(--lime);font-weight:800;font-size:1.65rem;padding:10px 14px;letter-spacing:-.11em}.brand-mark span{position:absolute;right:5px;top:1px;font-size:.8rem;letter-spacing:0}.breadcrumbs{padding-top:20px;color:var(--muted);font-size:.8rem}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}.breadcrumbs li:not(:last-child)::after{content:'/';margin-left:8px;color:#7a8278}.page-hero{padding:28px 0 22px}.page-hero h1{margin-bottom:18px}.kicker{font-size:.72rem;text-transform:uppercase;letter-spacing:.13em;font-weight:700;color:var(--muted);margin-bottom:14px}.dek{font-size:1.25rem;max-width:55ch;color:var(--muted)}.byline{font-size:.75rem;color:var(--muted);line-height:1.6;margin-bottom:0}.page-content>section{margin-block:46px}.page-content>p,.page-content>h2,.page-content>ul,.page-content>.answer,.page-content>.direct-action{max-width:1000px}.long-read{max-width:790px;margin-inline:auto;font-family:Georgia,'Times New Roman',serif;font-size:1.2rem;line-height:1.85}.long-read h2{padding-top:2rem;border-top:1px solid var(--line);margin-top:3rem}.long-read a{overflow-wrap:anywhere}.long-read p>a{font-family:Arial,Helvetica,sans-serif;font-size:.82em}.site-footer{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:70px;padding-block:45px;border-top:2px solid var(--ink)}.site-footer nav{display:grid;grid-template-columns:1fr 1fr;align-content:start;gap:8px;font-size:.85rem}.site-footer p{font-size:.9rem}.footer-note{grid-column:1/-1;color:var(--muted);border-top:1px solid var(--line);padding-top:20px;font-size:.75rem!important}.skip-link{position:fixed;top:-120px;left:12px;z-index:10;background:var(--lime);padding:14px}.skip-link:focus{top:12px}
}
@layer components {
[data-page-kind=home] .page-hero{padding-top:44px;padding-bottom:18px}[data-page-kind=home] h1{font-size:clamp(3rem,6.2vw,5.4rem)}.quick-tasks{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-left:1px solid var(--line);margin:10px 0 45px}.quick-tasks a{display:flex;align-items:center;gap:15px;padding:20px;font-weight:700;text-decoration:none;background:var(--white);border-bottom:1px solid var(--line);border-right:1px solid var(--line);line-height:1.35}.quick-tasks a>span{font-size:.68rem;color:var(--muted);font-weight:400}.quick-tasks b{margin-left:auto;font-size:1.4rem}.quick-tasks a:hover{background:var(--lime)}.home-feature{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:start;padding-block:8px 40px;border-bottom:1px solid var(--line)}.home-feature h2{margin-top:0}.home-feature aside{background:var(--green);color:var(--paper);padding:28px}.home-feature aside a,.home-feature aside .kicker,.home-feature aside small{color:var(--lime)}.home-feature aside small{margin-top:14px}.version{display:block;font-size:clamp(1.4rem,2.5vw,2rem);line-height:1.2;overflow-wrap:anywhere;margin-bottom:18px}.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.card{position:relative;display:block;border:1px solid var(--line);padding:26px 52px 26px 26px;background:var(--white);text-decoration:none}.card h3{margin-block:20px 12px}.card p{color:var(--muted);font-size:.94rem;margin:0}.card .kicker{font-size:.62rem}.card-arrow{position:absolute;top:24px;right:22px;font-size:1.5rem}.card:hover{border-color:var(--green);background:#eef1de}.history-feature{padding:40px;background:var(--lime);border-left:6px solid var(--green)}.history-feature h2{margin-top:0;max-width:650px}.history-feature a{display:inline-block;margin-right:20px;font-weight:700}.button,button{display:inline-block;padding:12px 19px;border:1px solid var(--green);border-radius:0;background:var(--green);color:var(--white);font-weight:700;text-decoration:none;cursor:pointer;min-height:46px}.secondary{background:transparent;color:var(--green);margin-left:12px}.answer{padding:24px 28px;background:#e9efdb;border-left:5px solid var(--green);margin-block:5px 24px}.answer h2{margin-top:0;font-family:Arial,Helvetica,sans-serif;font-weight:700;font-size:clamp(1.5rem,2.4vw,2rem)}.answer p:last-child{margin-bottom:0}.answer.warning{background:#f7e9da;border-color:var(--rust)}.answer .kicker{font-size:.65rem}.direct-action a{font-weight:700}.table-scroll{width:100%;overflow-x:auto;overscroll-behavior-x:contain;border:1px solid var(--line);margin:20px 0}.table-scroll table{border-collapse:collapse;width:100%;font-size:.84rem;line-height:1.5;min-width:660px}.table-scroll caption{text-align:left;padding:14px 18px;background:var(--green);color:var(--white);font-weight:700}.table-scroll th,.table-scroll td{vertical-align:top;text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);min-width:100px}.table-scroll thead{background:#e4e7db}.table-scroll tbody tr:nth-child(even){background:#efeee5}.table-scroll tbody th{font-weight:700;min-width:150px}.table-scroll td a{white-space:nowrap}.table-scroll small{font-size:.68rem;margin-top:6px}.download{font-size:.84rem}.download span{margin-inline:8px}.contents,.sources{border:1px solid var(--line);padding:18px 22px;margin:16px 0 30px}.contents summary,.sources summary{cursor:pointer;font-weight:700;min-height:30px}.contents nav{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px;font-size:.9rem}.era-line{border-block:1px solid var(--line);padding-block:26px;margin-bottom:38px}.era-line ol{display:grid;grid-template-columns:repeat(7,1fr);padding:0;list-style:none;gap:12px}.era-line a{display:flex;flex-direction:column;text-decoration:none;border-top:4px solid var(--green);padding-top:10px}.era-line strong{font-size:1.5rem;letter-spacing:-.05em}.era-line span{font-size:.75rem}.era-line figcaption,.route-diagram figcaption{font-size:.72rem;color:var(--muted)}.route-tool{background:var(--white);border:1px solid var(--line);padding:28px}.route-tool h2{margin-top:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-block:24px}.form-grid label{display:flex;flex-direction:column;font-size:.84rem;font-weight:700;gap:7px}.form-grid .wide{grid-column:1/-1}.form-grid small{font-weight:400}input,select{width:100%;min-width:0;min-height:48px;border:1px solid #7b887d;padding:10px 12px;background:var(--paper);color:var(--ink);border-radius:0}.route-result{padding:24px;background:#e9efdb;margin-block:24px;min-height:110px;border-left:4px solid var(--green)}.route-result h3{font-size:1.3rem}.route-result p:last-child{margin-bottom:0}.route-result[data-state=unsupported],.route-result[data-state=invalid]{background:#f7e9da;border-color:var(--rust)}.route-diagram{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-block:30px}.route-diagram>div{display:flex;flex-direction:column;text-align:center;gap:8px;padding:28px;background:#e9efdb;border:1px solid var(--line)}.route-diagram b{background:var(--green);color:var(--white);padding:10px}.route-diagram figcaption{grid-column:1/-1}.country-list{columns:3;padding-left:24px}.country-list li{break-inside:avoid}.sources{margin-top:40px}.sources ol{padding-left:24px;font-size:.86rem}.sources li{padding-block:12px;border-bottom:1px solid var(--line)}.related{border-top:1px solid var(--line);padding-top:28px;margin-top:40px}.related>div{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.related a{display:flex;justify-content:space-between;gap:20px;background:#e9efdb;padding:18px;font-weight:700;text-decoration:none;line-height:1.4}.source-library article,.change-list article{padding-block:24px;border-bottom:1px solid var(--line)}.source-library{font-size:.92rem}.source-library h2{font-size:1.6rem}.source-library p{max-width:95ch}.source-library a{overflow-wrap:anywhere}
}
@layer responsive {
@media(min-width:761px){.firmware-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.update-steps{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){body{font-size:16px}.site-header,.breadcrumbs,main,.site-footer{padding-inline:20px}.site-header{display:block;padding-block:20px}.site-header nav{gap:8px 20px;margin-top:16px}.site-header nav a{font-size:.82rem;padding-block:6px}.independence-strip span{display:none}.page-hero{padding-block:22px 15px}.page-hero h1{font-size:2.45rem}.byline{font-size:.7rem}.home-feature{grid-template-columns:1fr;gap:24px}.cards{grid-template-columns:1fr 1fr}.card{padding:20px 35px 20px 20px}.card h3{font-size:1.2rem}.quick-tasks{grid-template-columns:1fr;margin-bottom:28px}.quick-tasks a{padding:15px;font-size:.96rem}.quick-tasks b{font-size:1.2rem}[data-page-kind=home] .page-hero{padding-top:26px}[data-page-kind=home] h1{font-size:3.2rem;max-width:440px}.dek{font-size:1.1rem}.era-line ol{grid-template-columns:repeat(4,1fr)}.contents nav{grid-template-columns:1fr 1fr}.route-tool{padding:20px}.answer{padding:20px}.form-grid{grid-template-columns:1fr}.route-diagram{grid-template-columns:1fr}.country-list{columns:2}.long-read{font-size:1.13rem}.site-footer{grid-template-columns:1fr}.history-feature{padding:25px}.page-content>section{margin-block:32px}.related>div{grid-template-columns:1fr}}
@media(max-width:440px){.cards{grid-template-columns:1fr}.site-header nav{gap:5px 14px}.site-header nav a{font-size:.78rem}.page-hero h1{font-size:2.15rem}[data-page-kind=home] h1{font-size:2.7rem}.quick-tasks a{gap:10px}.era-line ol{grid-template-columns:repeat(3,1fr)}.country-list{columns:1}.answer h2{overflow-wrap:anywhere}.breadcrumbs{font-size:.72rem}.contents nav{grid-template-columns:1fr}}
@media (prefers-reduced-motion: reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
@media print{.site-header,.independence-strip,.breadcrumbs,.site-footer,.route-tool,.related,.skip-link{display:none}body{font-size:11pt;background:white;color:black}main{max-width:none;padding:0}h1{font-size:26pt}h2{font-size:20pt}.table-scroll{overflow:visible;border:0}.table-scroll table{min-width:0;font-size:8pt}.table-scroll th,.table-scroll td{min-width:0;padding:5px}.long-read{max-width:none}.answer{break-inside:avoid}a{color:black}.sources{display:block}}
}
@layer components {
.firmware-grid{display:grid;gap:16px;margin-block:24px}.firmware-card{display:block;min-width:0;padding:24px;background:var(--white);border:1px solid var(--line);text-decoration:none}.firmware-card h3{font-family:Georgia,serif;font-size:1.65rem;margin-bottom:14px}.firmware-card>strong{display:block;font-size:1.2rem;overflow-wrap:anywhere;color:var(--green);margin-bottom:12px}.firmware-card p{font-size:.85rem;color:var(--muted)}.firmware-card:hover{background:#e9efdb;border-color:var(--green)}.firmware-card-link{font-size:.85rem;font-weight:700}.platform-nav,.jump-links{display:flex;flex-wrap:wrap;gap:10px;margin-block:20px}.platform-nav a,.jump-links a{padding:9px 13px;border:1px solid var(--line);font-size:.83rem;background:var(--white)}.platform-nav a:first-child{background:var(--green);color:var(--white)}.update-steps{display:grid;gap:24px;padding-left:24px}.update-steps li{padding:12px}.update-steps p{font-size:.94rem;margin-top:12px}.milestones{border-left:3px solid var(--green);padding-left:24px}.milestones article{border-bottom:1px solid var(--line);padding-block:20px}.milestones h3{font-size:1.2rem}code{overflow-wrap:anywhere}.page-content>nav{max-width:100%}
}

/* Historical archive controls and legible evidence columns. */
.history-filter{display:flex;gap:1rem;align-items:end;flex-wrap:wrap;margin:1.5rem 0}
.history-filter[hidden],.firmware-history [hidden]{display:none!important}
.history-filter label{display:grid;gap:.45rem;flex:1 1 220px;font-weight:700}
.history-filter input,.history-filter select{width:100%;min-width:0;padding:.8rem;border:1px solid currentColor;border-radius:.35rem;background:var(--paper,#fff);color:var(--ink,#111);font:inherit}
.history-filter button{padding:.8rem;font:inherit;cursor:pointer}
.firmware-history td{vertical-align:top}
.firmware-history td span,.firmware-history td strong,.firmware-history td small,.firmware-history th small{display:block}
.firmware-history td small,.firmware-history th small{margin-top:.5rem;font-weight:400}
.firmware-history td:last-child{min-width:150px}
.history-warning{margin-top:.75rem;color:#a32a1e}
.history-method{margin:1.5rem 0;padding:1rem;border:1px solid #c6c8ce}
.history-method summary{cursor:pointer;font-weight:700}
.firmware-history tr:target{outline:3px solid #1d58d8;outline-offset:-3px}
.history-empty{padding:1rem;border-left:3px solid #1d58d8}
@media print{.history-filter{display:none}.firmware-history tr[hidden]{display:table-row!important}}