@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-400-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-400-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-500-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-500-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-400-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-400-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-500-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-500-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-600-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-600-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 700;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-700-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 700;
  font-stretch: 100%;
  font-display: swap;
  src: url(/fonts/ibm-plex-sans-700-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
:root{
  --bg:#F6F7F5; --surface:#FFFFFF; --ink:#17232D; --muted:#65717C; --line:#E1E5E8; --accent:#2457A6; --zebra:#FAFBFA; --grey:#ECEEEB;
  --ok:#16834A; --bad:#C23B3B; --warn:#B7791F; --none:#8A949E;
  --navy:#17232D; --navy-2:#223340; --navy-ink:#EDF1F4; --navy-muted:#A0ADB8; --navy-line:#34444F;
  --cream:#F8EFE3; --cream-ink:#17232D; --cream-muted:#5A6570;
  --btn:#17232D; --btn-ink:#FFFFFF;
  --sans:"IBM Plex Sans","Segoe UI",Helvetica,Arial,sans-serif; --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){ :root{
  --bg:#111820; --surface:#19232D; --ink:#EDF1F4; --muted:#A0ADB8; --line:#303D49; --accent:#82A9EF; --zebra:#1D2833; --grey:#0D131A;
  --ok:#4CCB83; --bad:#F07878; --warn:#E7B65B; --none:#8A949E;
  --navy:#0B1117; --navy-2:#19232D; --navy-line:#303D49;
  --btn:#EDF1F4; --btn-ink:#111820; color-scheme:dark } }

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.55 var(--sans);-webkit-font-smoothing:antialiased}
.wrap{max-width:1720px;margin:0 auto;padding:0 40px}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,p{margin:0}
h1{font-size:42px;line-height:1.12;font-weight:700;letter-spacing:-.02em}
h2{font-size:29px;line-height:1.2;font-weight:600;letter-spacing:-.015em}
h3{font-size:20px;line-height:1.3;font-weight:600}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.demo{display:inline-block;font:600 12px/1.4 var(--sans);letter-spacing:0;color:var(--warn);border:1px solid var(--warn);border-radius:3px;padding:2px 8px;margin-left:14px;vertical-align:middle;white-space:nowrap}
img{max-width:100%}
[hidden]{display:none!important}
button{font-family:inherit}

.mock{background:var(--navy);color:var(--navy-ink);font-size:13px}
.mock .wrap{padding-top:7px;padding-bottom:7px}

/* masthead */
header.top{background:var(--surface);border-bottom:1px solid var(--line)}
header.top .wrap{height:72px;display:flex;align-items:center;gap:48px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:-.01em;white-space:nowrap}
.logo i{width:26px;height:26px;border-radius:4px;background:var(--ink);display:grid;place-items:center}
.logo i::before{content:"";border-left:9px solid var(--surface);border-top:6px solid transparent;border-bottom:6px solid transparent;margin-left:2px}
.logo span{font-weight:400;color:var(--muted)}
.cnav{display:flex;flex:1;align-self:stretch}
.cnav button{font-size:15px;font-weight:500;background:none;border:0;color:var(--muted);padding:0 16px;border-bottom:3px solid transparent;border-top:3px solid transparent;cursor:pointer}
.cnav button:hover{color:var(--ink)}
.cnav button[aria-pressed="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.rnav{display:flex;gap:28px;font-size:15px}
.rnav a{color:var(--muted);text-decoration:none}
.rnav a:hover{color:var(--ink)}

/* opening band: illustration blends into a band of its own background colour */
.open{background:var(--cream);color:var(--cream-ink);border-bottom:1px solid var(--line);overflow:hidden}
.open .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,780px);align-items:center;gap:24px;min-height:300px}
.open.solo .wrap{grid-template-columns:minmax(0,1fr);min-height:0}
.otext{padding:36px 0}
.crumb{font-size:12px;font-weight:500;color:var(--cream-muted);margin-bottom:12px}
.otext p{font-size:18px;color:var(--cream-muted);margin-top:12px;max-width:560px}
.when{display:flex;flex-wrap:wrap;gap:6px 28px;margin-top:22px;font-size:13px;color:var(--cream-muted)}
.when b{color:var(--cream-ink);font-weight:500}
.when .done{display:inline-flex;align-items:center;gap:6px;color:#16834A;font-family:var(--sans);font-weight:600}
.hero{display:block;width:100%;height:auto;align-self:end;-webkit-mask-image:linear-gradient(to right,transparent 0,#000 9%,#000 94%,transparent 100%);mask-image:linear-gradient(to right,transparent 0,#000 9%,#000 94%,transparent 100%)}
.credit{position:absolute;right:40px;bottom:8px;font-size:11px;color:var(--cream-muted)}
.open{position:relative}

/* results: white dense dashboard */
.results{background:var(--surface);border-bottom:1px solid var(--line)}
.rhead{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;padding:28px 0 20px}
.rhead p{color:var(--muted);font-size:14px;margin-top:4px}
.nums{display:flex;gap:40px}
.nums b{display:block;font:500 28px/1.1 var(--mono);letter-spacing:-.02em}
.nums span{font-size:12px;color:var(--muted)}
.sortbar{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);padding:10px 0;border-top:1px solid var(--line)}
.sortbar button{font-size:13px;font-weight:500;background:none;border:0;padding:2px 0;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent}
.sortbar button[aria-pressed="true"]{color:var(--ink);border-bottom-color:var(--ink)}
table{width:100%;border-collapse:collapse;font-size:14px}
thead th{position:sticky;top:0;z-index:1;background:var(--grey);height:74px;vertical-align:bottom;padding-bottom:10px!important;padding:0 16px;text-align:left;font-size:13px;font-weight:600;color:var(--ink);border-top:1px solid var(--line);border-bottom:1px solid var(--line);white-space:nowrap}
thead th:last-child,tbody td:last-child{text-align:right}
tbody td{height:66px;padding:0 16px;border-bottom:1px solid var(--line)}
tbody tr.row:nth-child(4n+3) td{background:var(--zebra)}
tbody tr.row:hover td{background:var(--bg)}
.slogo{display:inline-flex;align-items:center;height:34px;padding:4px 8px;background:#fff;border:1px solid var(--line);border-radius:4px}
.slogo.stext{font-size:13px;font-weight:700;color:#17232D}
.slogo img{display:block;height:24px;width:auto}
.sname{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-top:5px}
.prov{display:flex;align-items:center;gap:14px;font-size:16px;font-weight:600;background:none;border:0;color:var(--ink);padding:0;cursor:pointer;text-align:left}
.prov img,.mono-logo{width:30px;height:30px;flex:none}
.mono-logo{display:grid;place-items:center;border-radius:5px;background:var(--ink);color:var(--surface);font-weight:700;font-size:15px}
.prov small{display:block;font-weight:400;font-size:12px;color:var(--muted)}
.st{display:inline-flex;align-items:center;gap:6px;font-weight:500;white-space:nowrap}
.st svg{width:16px;height:16px;flex:none}
.st.ok{color:var(--ok)}.st.blocked{color:var(--bad)}.st.unstable{color:var(--warn)}.st.none{color:var(--none)}
td .sub{display:block;font-family:var(--sans);font-size:12px;color:var(--muted)}
.btn{display:inline-block;font-size:14px;font-weight:600;background:var(--btn);color:var(--btn-ink);border:0;border-radius:5px;padding:10px 16px;cursor:pointer;white-space:nowrap}
.btn:hover{opacity:.88}
tr.detail td{height:auto;padding:16px 16px 18px 60px;background:var(--bg);text-align:left}
.dgrid{display:flex;gap:56px;flex-wrap:wrap}
.dgrid span{display:block;font-size:12px;color:var(--muted)}
.rfoot{display:flex;justify-content:space-between;gap:16px 40px;flex-wrap:wrap;padding:16px 0 28px;font-size:13px;color:var(--muted)}
.legend{display:flex;gap:22px;flex-wrap:wrap}
.mlist{display:none}
.mlist details{border-top:1px solid var(--line);padding:14px 0}
.mlist summary{list-style:none;display:flex;align-items:center;gap:12px;cursor:pointer}
.mlist summary::-webkit-details-marker{display:none}
.mlist summary img{width:28px;height:28px}
.mlist summary b{flex:1;font-weight:600}
.mlist summary small{display:block;font-weight:400;font-size:12px;color:var(--muted)}
.mlist .rows{margin-top:12px;display:grid;gap:8px;font-size:14px}
.mlist .rows div{display:flex;justify-content:space-between;align-items:center;gap:12px}
.mlist .btn{margin-top:14px;width:100%;text-align:center}

/* countries: dark navy band */
.countries{background:var(--navy);color:var(--navy-ink)}
.countries .wrap{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:center;padding-top:36px;padding-bottom:36px}
.countries p{color:var(--navy-muted);font-size:14px;margin-top:6px}
.cgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--navy-line)}
.cgrid button{display:flex;align-items:center;gap:18px;text-align:left;background:none;border:0;border-right:1px solid var(--navy-line);border-bottom:4px solid transparent;padding:22px 24px 18px;cursor:pointer;color:var(--navy-ink)}
.cgrid button:last-child{border-right:0}
.cgrid button:hover{background:var(--navy-2)}
.cgrid button[aria-pressed="true"]{background:var(--navy-2);border-bottom-color:var(--navy-ink)}
.cgrid img{width:66px;height:44px;object-fit:cover;flex:none}
.cgrid b{display:block;font-size:19px;font-weight:600}
.cgrid span span{font-size:13px;color:var(--navy-muted)}

/* history: grey band, wide charts */
.history{background:var(--grey);border-bottom:1px solid var(--line)}
.history .wrap,.evidence .wrap,.howto .wrap,.method .wrap,.faqs .wrap{padding-top:52px;padding-bottom:56px}
.shead{margin-bottom:24px}
.shead p{color:var(--muted);margin-top:8px;max-width:640px}
.hctl{display:flex;justify-content:space-between;gap:16px 32px;flex-wrap:wrap;margin-bottom:18px}
.seg{display:flex;flex-wrap:wrap}
.seg button{font-size:14px;font-weight:500;background:var(--surface);border:1px solid var(--line);margin-left:-1px;padding:8px 14px;color:var(--ink);cursor:pointer}
.seg button:first-child{margin-left:0;border-radius:4px 0 0 4px}
.seg button:last-child{border-radius:0 4px 4px 0}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--surface);border-color:var(--ink);position:relative}
.hgrid{display:grid;grid-template-columns:minmax(0,1fr) 300px;background:var(--surface);border:1px solid var(--line)}
.chartbox{padding:24px;overflow-x:auto;border-right:1px solid var(--line)}
.chartbox svg{display:block;width:100%;min-width:640px;height:auto}
.hsum{display:grid;align-content:stretch}
.hsum div{padding:20px 24px;border-bottom:1px solid var(--line);display:grid;align-content:center}
.hsum div:last-child{border-bottom:0}
.hsum b{font:500 34px/1.1 var(--mono);letter-spacing:-.02em}
.hsum span{font-size:13px;color:var(--muted)}
.matrix{margin-top:20px;background:var(--surface);border:1px solid var(--line);padding:18px 24px;overflow-x:auto}
.mrow{display:grid;grid-template-columns:150px minmax(600px,1fr) 60px;gap:20px;align-items:center;padding:5px 0}
.mrow button{font-size:14px;font-weight:500;background:none;border:0;padding:0;text-align:left;color:var(--muted);cursor:pointer}
.mrow.on button{color:var(--ink);font-weight:700}
.cells{display:grid;grid-template-columns:repeat(30,1fr);gap:3px}
.cells i{height:24px;background:var(--ok);opacity:.55}
.mrow.on .cells i{opacity:1}
.cells i.blocked{background:var(--bad)}.cells i.unstable{background:var(--warn)}.cells i.none{background:var(--none)}
.mrow .pct{text-align:right;font:500 14px var(--mono)}
.maxis{display:grid;grid-template-columns:150px minmax(600px,1fr) 60px;gap:20px;font:400 12px var(--mono);color:var(--muted);padding-top:6px}
.maxis div{display:flex;justify-content:space-between}

/* evidence: screenshot gallery */
.evidence{background:var(--surface);border-bottom:1px solid var(--line)}
.egrid{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:40px;align-items:start}
.slot{aspect-ratio:16/9;background:var(--bg) repeating-linear-gradient(135deg,transparent 0 16px,var(--line) 16px 17px);border:1px dashed var(--none);display:grid;place-items:center;text-align:center;padding:24px;color:var(--muted)}
.slot b{display:block;color:var(--ink);font-size:18px;font-weight:600;margin-bottom:6px}
.slot span{max-width:440px;font-size:14px;background:var(--surface);border:1px solid var(--line);padding:18px 22px}
.evidence dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:0;font-size:15px;border-top:2px solid var(--ink)}
.evidence dt,.evidence dd{padding:11px 0;border-bottom:1px solid var(--line);margin:0}
.evidence dt{color:var(--muted);padding-right:24px}
.evidence dd{font-weight:500;text-align:right}
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}
.thumbs button{background:none;border:0;padding:0;text-align:left;cursor:pointer;color:var(--ink);font-size:14px}
.thumbs .t{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--bg);border:1px solid var(--line);margin-bottom:8px}
#shot img{display:block;width:100%;height:auto;border:1px solid var(--line)}
.empty{display:grid;place-content:center;text-align:center;min-height:200px;color:var(--muted);font-size:14px;max-width:460px;margin:0 auto}
.empty b{display:block;color:var(--ink);font-size:17px;margin-bottom:6px}
.thumbs button[aria-pressed="true"] .t{border:2px solid var(--ink)}
.thumbs .slogo{margin:0 10px 0 0;vertical-align:middle}

/* how-to: editorial numbered list */
.howto .wrap{display:grid;grid-template-columns:360px minmax(0,1fr);gap:64px}
.howto .side p{color:var(--muted);margin-top:10px}
.hsteps{border-top:2px solid var(--ink)}
.hsteps li{display:grid;grid-template-columns:96px minmax(0,340px) minmax(0,1fr);gap:24px;align-items:baseline;padding:22px 0;border-bottom:1px solid var(--line)}
.hsteps{list-style:none;margin:0;padding:0}
.hsteps .n{font-size:44px;font-weight:300;line-height:1;letter-spacing:-.03em;color:var(--none)}
.hsteps p{color:var(--muted)}

/* methodology: technical timeline */
.method{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tl{display:grid;grid-template-columns:repeat(7,1fr);margin:8px 0 36px;position:relative}
.tl::before{content:"";position:absolute;left:0;right:0;top:7px;height:2px;background:var(--line)}
.tl div{position:relative;padding:28px 20px 0 0}
.tl div::before{content:"";position:absolute;left:0;top:0;width:16px;height:16px;border-radius:50%;background:var(--surface);border:3px solid var(--ink)}
.tl time{font:500 13px var(--mono);color:var(--accent)}
.tl h3{font-size:16px;margin:4px 0}
.tl p{font-size:14px;color:var(--muted)}
.mcols{display:grid;grid-template-columns:1fr 1fr;gap:64px;border-top:1px solid var(--line);padding-top:28px}
.mcols ul{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:10px;font-size:15px}
.mcols li{display:grid;grid-template-columns:170px 1fr;gap:16px;color:var(--muted)}
.mcols .plain li{display:list-item;list-style:disc;margin-left:18px}

.faq{display:grid;grid-template-columns:1fr 1fr;gap:0 64px}
.faq details{border-top:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:17px}
.faq p{color:var(--muted);margin-top:8px;max-width:640px}

footer{background:var(--navy);color:var(--navy-muted)}
footer .wrap{padding-top:36px;padding-bottom:44px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:14px}
footer b{color:var(--navy-ink)}
footer nav{display:flex;gap:26px;flex-wrap:wrap}
footer a{color:var(--navy-muted)}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:5px;font-size:14px;max-width:calc(100% - 36px);z-index:5}

@media (max-width:1180px){
  .open .wrap{grid-template-columns:minmax(0,1fr) minmax(0,520px)}
  .countries .wrap{grid-template-columns:minmax(0,1fr);gap:20px}
  .hgrid{grid-template-columns:minmax(0,1fr)} .chartbox{border-right:0;border-bottom:1px solid var(--line)} .hsum{grid-template-columns:repeat(3,1fr)} .hsum div{border-bottom:0;border-right:1px solid var(--line)}
  .egrid{grid-template-columns:minmax(0,1fr)}
  .howto .wrap{grid-template-columns:minmax(0,1fr);gap:24px}
  .tl{grid-template-columns:minmax(0,1fr)} .tl::before{left:7px;right:auto;top:0;bottom:0;width:2px;height:auto} .tl div{padding:0 0 22px 36px}
  .nums{gap:28px}
}
@media (max-width:820px){
  .wrap{padding:0 18px}
  h1{font-size:30px} h2{font-size:23px}
  header.top .wrap{height:auto;flex-wrap:wrap;gap:0 16px;padding-top:14px}
  .rnav{margin-left:auto;gap:18px;font-size:14px}
  .cnav{flex-basis:100%;overflow-x:auto;margin:6px -18px 0;padding:0 4px}
  .cnav button{padding:10px 14px;white-space:nowrap}
  .open .wrap{grid-template-columns:minmax(0,1fr);gap:0}
  .otext{padding:26px 0 8px}.otext p{font-size:16px}
  .hero{-webkit-mask-image:none;mask-image:none}
  .credit{position:static;padding:0 18px 8px;text-align:right}
  .desk,.sortbar{display:none} .mlist{display:block}
  .nums b{font-size:22px}
  .cgrid{grid-template-columns:1fr 1fr}
  .cgrid button{padding:16px;gap:12px;border-top:1px solid var(--navy-line)}
  .cgrid button:nth-child(2){border-right:0}
  .cgrid img{width:42px;height:28px}.cgrid b{font-size:16px}
  .history .wrap,.evidence .wrap,.howto .wrap,.method .wrap,.faqs .wrap{padding-top:36px;padding-bottom:40px}
  .hsum b{font-size:24px}.hsum div{padding:14px}
  .seg button{padding:7px 10px;font-size:13px}
  .thumbs{grid-template-columns:1fr 1fr}
  .hsteps li{grid-template-columns:56px minmax(0,1fr);gap:6px 12px}
  .hsteps li p{grid-column:2}
  .hsteps .n{font-size:32px}
  .mcols,.faq{grid-template-columns:minmax(0,1fr);gap:28px 0}
  .mcols li{grid-template-columns:minmax(0,1fr);gap:2px}
}

/* multi-page additions */
a.logo{color:var(--ink);text-decoration:none}
.cnav{gap:4px}
.cnav a{display:flex;align-items:center;font-size:15px;font-weight:500;color:var(--muted);text-decoration:none;padding:0 14px;border-bottom:3px solid transparent;border-top:3px solid transparent;white-space:nowrap}
.cnav a:hover{color:var(--ink)}
.cnav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--ink)}
.crumb a{color:inherit}
.open.solo .otext{max-width:860px}
a.btn{text-decoration:none}
a.prov{text-decoration:none}
.narrowpad{padding-top:44px!important;padding-bottom:44px!important}
.after{margin-top:18px;font-size:14px;color:var(--muted)}
.svc{border-top:2px solid var(--ink)}
.svcrow{display:grid;grid-template-columns:30px minmax(160px,260px) 150px minmax(0,1fr) auto;gap:16px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.svcrow img{width:30px;height:30px}
.svcrow .muted{font-size:14px}
.guides{background:var(--bg);border-bottom:1px solid var(--line)}
.guides .wrap{padding-top:48px;padding-bottom:52px}
.glist{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.glist a{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr) auto;gap:32px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}
.glist a::after{content:"→";color:var(--muted)}
.glist b{font-size:20px;font-weight:600}
.glist span{color:var(--muted)}
.glist a:hover b{text-decoration:underline}
.prosec{background:var(--surface);border-bottom:1px solid var(--line)}
.prosec.alt{background:var(--grey)}
.prosec .wrap{padding-top:48px;padding-bottom:52px}
.prose{max-width:780px}
.prose h2{margin:36px 0 12px}
.prose h2:first-child{margin-top:0}
.prose h3{margin:26px 0 8px}
.prose p{margin:0 0 14px}
.prose ul{margin:0 0 14px;padding-left:20px;display:grid;gap:10px}
.prose blockquote{margin:18px 0;padding:18px 22px;background:var(--navy);color:var(--navy-ink);border-radius:8px;font-size:17px;line-height:1.5}
.note{border-left:4px solid var(--warn);background:var(--bg);padding:14px 18px;font-size:15px}
.prosec.alt .note{background:var(--surface)}
.pgrid{display:grid;grid-template-columns:minmax(0,780px) minmax(0,420px);gap:80px;justify-content:space-between;align-items:start}
.side2{position:sticky;top:24px}
.brief{border-top:2px solid var(--ink);padding-top:18px}
.brief dl{margin:12px 0 16px;display:grid;grid-template-columns:auto minmax(0,1fr);font-size:15px}
.brief dt,.brief dd{margin:0;padding:10px 0;border-bottom:1px solid var(--line)}
.brief dt{color:var(--muted);padding-right:20px}
.brief dd{font-weight:500;text-align:right}
.blinks{display:grid;gap:8px;font-size:15px}
.blinks a::after{content:" →"}
.sidefig{margin:0}
.sidefig img{display:block;width:100%;height:auto;border:1px solid var(--line)}
.figcap{font-size:13px;color:var(--muted);margin-top:8px}
.freecta{display:flex;flex-wrap:wrap;gap:24px 48px;align-items:center;justify-content:space-between;padding:44px 0}
.freecta h2{color:inherit;margin:0 0 10px}.freecta p{max-width:720px;margin:0;color:var(--navy-muted)}.freecta .btn{background:var(--surface);color:var(--ink)}
.cta2{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.btn.ghost{background:transparent;color:var(--cream-ink);border:1px solid var(--cream-ink)}
.lastrow{display:grid;grid-template-columns:30px minmax(160px,260px) minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.lastrow img{width:30px;height:30px}
.lastrow .pst{display:inline-block;margin-right:22px;font-size:14px}
.egrid{grid-template-columns:minmax(0,760px) minmax(0,420px);justify-content:space-between}
.open.hasfig .wrap{grid-template-columns:minmax(0,1fr) minmax(0,640px);gap:56px;padding-top:36px;padding-bottom:36px}
.bframe{margin:0;border:1px solid #d9cfbf;border-radius:8px;overflow:hidden;background:#fff;box-shadow:0 18px 40px -22px rgba(23,35,45,.45)}
.bbar{display:flex;align-items:center;gap:6px;padding:9px 12px;background:#efe6d8;border-bottom:1px solid #d9cfbf}
.bbar i{width:9px;height:9px;border-radius:50%;background:#c9bda9}
.bbar span{margin-left:10px;font:400 12px var(--mono);color:#5A6570;background:#fff;border-radius:4px;padding:2px 10px;flex:1}
.bframe img{display:block;width:100%;height:auto}
.bframe figcaption{font-size:12px;color:#5A6570;padding:8px 12px;background:#fff;border-top:1px solid #e7dfd2}
.howflow{background:var(--surface);border-bottom:1px solid var(--line)}
.flow{display:grid;grid-template-columns:auto minmax(60px,1fr) auto minmax(60px,1fr) auto;align-items:center;gap:0;margin:22px 0 26px;padding:26px 28px;background:var(--bg);border:1px solid var(--line);border-radius:8px}
.prosec.alt .flow{background:var(--surface)}
.fnode{display:grid;justify-items:center;text-align:center;gap:4px;min-width:150px}
.fnode b{font-size:15px}
.fnode span{font-size:13px;color:var(--muted)}
.fico{height:54px;display:flex;align-items:center;justify-content:center;gap:4px;padding:0 14px;background:var(--surface);border:1px solid var(--line);border-radius:27px;margin-bottom:6px}
.fico img{display:block;border-radius:2px}
.fnode.mid .fico{border-color:var(--ok);box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 14%,transparent)}
.fline{position:relative;height:2px;margin:0 10px 44px;background:repeating-linear-gradient(90deg,var(--ok) 0 8px,transparent 8px 16px);background-size:16px 2px}
.fline span{position:absolute;left:50%;top:-22px;transform:translateX(-50%);font-size:11px;color:var(--muted);white-space:nowrap}
.fline::after{content:"";position:absolute;right:-2px;top:-4px;border-left:8px solid var(--ok);border-top:5px solid transparent;border-bottom:5px solid transparent}
.pstrip{border-top:2px solid var(--ink)}
.prow{display:grid;grid-template-columns:34px 170px minmax(0,1fr) minmax(0,1.3fr) minmax(0,1fr) auto;gap:20px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;transition:background .2s}
.prow:hover{background:var(--zebra)}
.prow b{font-size:16px}
.pcta{text-align:center}
.prow em{display:block;font-style:normal;font-size:12px;color:var(--muted)}
.btn{transition:transform .15s ease,opacity .15s ease,box-shadow .15s ease}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 14px -8px rgba(23,35,45,.6)}
.btn:active{transform:translateY(0)}
.glist a{transition:background .2s,padding .2s}
.glist a:hover{background:var(--surface);padding-left:14px;padding-right:14px}
.glist a::after{transition:transform .2s}
.glist a:hover::after{transform:translateX(4px)}
.hero{transition:transform .6s ease}
@media (prefers-reduced-motion:no-preference){
  .fline{animation:dash 1.1s linear infinite}
  .js .rv{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
  .js .rv.in{opacity:1;transform:none}
  .js .pb.rv.in{transition:opacity .5s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease}
  .pb:hover,.js .pb.rv.in:hover{transform:translateY(-3px)}
  .open .otext>*{animation:rise .55s ease both}
  .open .otext>*:nth-child(2){animation-delay:.05s}.open .otext>*:nth-child(3){animation-delay:.1s}.open .otext>*:nth-child(4){animation-delay:.15s}
  .open .hero,.open .bframe{animation:rise .7s ease .1s both}
}
@keyframes dash{to{background-position:16px 0}}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.answer{font-size:18px;border-left:4px solid var(--ok);background:var(--bg);padding:16px 20px;margin-bottom:28px!important}
.when a{color:inherit}
table.mini{width:100%;min-width:0;font-size:15px;margin:0 0 10px;border-top:2px solid var(--ink)}
table.mini th{text-align:left;font-weight:400;color:var(--muted);padding:10px 20px 10px 0;border-bottom:1px solid var(--line);width:42%;height:auto;position:static;background:none}
table.mini td{height:auto;padding:10px 0;border-bottom:1px solid var(--line);font-weight:500;text-align:left!important}
table.mini3{width:100%;min-width:560px;font-size:14px;border-top:2px solid var(--ink);margin-bottom:14px}
table.mini3 th{position:static;background:none;height:auto;padding:10px 16px 10px 0;border-top:0}
table.mini3 td{height:auto;padding:12px 16px 12px 0;vertical-align:top;text-align:left!important}
table.mini3 td:first-child{font-weight:600;width:30%}
.small{font-size:13px}
.tvico{color:var(--ink)}
.hero.art{align-self:center;border-radius:0;-webkit-mask-image:linear-gradient(to right,transparent 0,#000 14%,#000 92%,transparent 100%);mask-image:linear-gradient(to right,transparent 0,#000 14%,#000 92%,transparent 100%)}
.btn.big{font-size:16px;padding:14px 22px;border-radius:6px}
.svcbar{background:var(--surface);border-bottom:1px solid var(--line)}
.svcbar .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;padding-top:16px;padding-bottom:16px;font-size:14px;color:var(--muted)}
.svcbar a{text-decoration:none;transition:transform .15s}
.svcbar a:hover{transform:translateY(-2px)}
.hls{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--line);gap:1px}
.hl{display:grid;gap:8px;align-content:start;padding:20px;background:var(--surface);text-decoration:none;color:var(--ink);transition:background .2s}
.hl:hover{background:var(--zebra)}
.hlk{font-size:12px;font-weight:600;color:var(--accent);text-transform:none}
.hlv{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700}
.hld{font-size:14px;color:var(--muted)}
.disc{background:var(--bg);border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.disc .wrap{padding-top:5px;padding-bottom:5px}
.disc a{color:var(--muted)}
.feat{background:var(--navy);color:var(--navy-ink)}
.feat .wrap{padding-top:36px;padding-bottom:36px}
.featbox{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) auto;gap:48px;align-items:center}
.feattag{display:inline-block;font-size:12px;font-weight:600;color:#ffd77a;border:1px solid #ffd77a;border-radius:20px;padding:3px 12px;margin-bottom:12px}
.feath h2{display:flex;align-items:center;gap:14px;font-size:34px}
.feath h2 img{background:#fff;border-radius:9px;padding:6px}
.feath p{color:var(--navy-muted);margin-top:10px;max-width:560px}
.featl{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:15px}
.featl li{display:grid;grid-template-columns:16px minmax(0,1fr);gap:10px;align-items:center}
.featl svg{color:#55d3a4}
.featcta{display:grid;justify-items:center;gap:2px;text-align:center}
.featcta b{font:500 34px/1.1 var(--mono);letter-spacing:-.02em}
.featcta span{font-size:12px;color:var(--navy-muted);margin-bottom:10px}
.featcta .btn{background:#ffd77a;color:#17232D}
.featcta small{font-size:11px;color:var(--navy-muted);margin-top:8px;max-width:220px}
.pblist{display:grid;gap:20px}
.affnote{display:block;font-size:11px;color:var(--muted);text-align:center;margin-top:5px}
.pbh .btn+.affnote{grid-column:-2/-1;margin-top:-14px}
.rank{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--ink);color:var(--surface);font:600 20px var(--mono)}
.badge.gold{color:#8a5a00;border-color:#d9a520;background:#fff6da}
table.pts td,table.pts th{text-align:center!important}
table.pts td:first-child,table.pts th:first-child{text-align:left!important;width:auto;font-weight:400}
.pb{background:var(--surface);border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:border-color .2s,box-shadow .2s}
.pb:hover{border-color:var(--none);box-shadow:0 14px 34px -24px rgba(23,35,45,.5)}
.pbh{display:grid;grid-template-columns:44px 48px minmax(0,1fr) auto auto;gap:20px;align-items:center;padding:22px 24px}
.pbh h3{font-size:24px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.pbh p{color:var(--muted);font-size:15px;margin-top:2px}
.badge{font-size:12px;font-weight:600;color:var(--ok);border:1px solid var(--ok);border-radius:20px;padding:2px 10px;white-space:nowrap}
.pbprice{text-align:right;padding-right:8px}
.pbprice b{display:block;font:500 28px/1.1 var(--mono);letter-spacing:-.02em;white-space:nowrap}
.pbprice span{font-size:12px;color:var(--muted)}
.pbfacts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg)}
.pbfacts>div{padding:14px 24px;border-right:1px solid var(--line)}
.pbfacts>div:last-child{border-right:0}
.pbfacts span{display:block;font-size:12px;color:var(--muted)}
.pbfacts b{font-size:15px;font-weight:600}
.pbfacts .pst{display:inline-block;margin-right:14px;font-weight:400}
.pbbody{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.1fr);gap:32px;padding:20px 24px 24px}
.pbbody h4{margin:0 0 10px;font-size:13px;font-weight:600;color:var(--muted)}
.pbbody ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:15px}
.pbbody li{display:grid;grid-template-columns:16px minmax(0,1fr);gap:10px;align-items:start}
.pbbody li svg{margin-top:4px}
.pros svg{color:var(--ok)}.cons svg{color:var(--none)}
.pbbody p{font-size:14px;margin:0 0 8px}
.pbbody .apps,.pbbody .src{color:var(--muted);font-size:13px}
.pblist.compact .pbbody{display:none}
.quizsec{background:var(--navy);color:var(--navy-ink)}
.quiz{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:20px 56px;align-items:start}
.qhead{grid-row:span 4}
.qhead p{color:var(--navy-muted);margin-top:8px}
.qstep h3{font-size:17px;margin-bottom:12px}
.qopts{display:flex;flex-wrap:wrap;gap:10px}
.qopts button{font-size:15px;font-weight:500;background:transparent;color:var(--navy-ink);border:1px solid var(--navy-line);border-radius:6px;padding:11px 16px;cursor:pointer;transition:background .15s,border-color .15s}
.qopts button:hover{background:var(--navy-2);border-color:var(--navy-muted)}
.qopts button[aria-pressed="true"]{background:var(--navy-ink);color:var(--navy);border-color:var(--navy-ink)}
.qres{background:var(--navy-2);border:1px solid var(--navy-line);border-radius:8px;padding:20px 22px;display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:16px;align-items:center}
.qres img{width:44px;height:44px;background:#fff;border-radius:8px;padding:6px}
.qres b{display:block;font-size:20px}
.qres span{color:var(--navy-muted);font-size:14px}
.qres .btn{background:var(--navy-ink);color:var(--navy)}
.qres .again{grid-column:1/-1;font-size:13px;color:var(--navy-muted);background:none;border:0;padding:0;text-align:left;cursor:pointer;text-decoration:underline}
.devsec{background:var(--cream);color:var(--cream-ink);border-bottom:1px solid var(--line)}
.devsec .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,640px);gap:48px;align-items:center;padding-top:44px;padding-bottom:44px}
.devtext p{color:var(--cream-muted);margin-top:8px;max-width:560px}
.devlist{list-style:none;margin:18px 0 12px;padding:0;border-top:2px solid var(--cream-ink);max-width:620px}
.devlist li{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:10px 0;border-bottom:1px solid #e3d8c7;font-size:15px}
.devlist span{color:var(--cream-muted)}
.devimg{display:block;width:100%;height:auto;-webkit-mask-image:linear-gradient(to right,transparent 0,#000 10%,#000 94%,transparent 100%);mask-image:linear-gradient(to right,transparent 0,#000 10%,#000 94%,transparent 100%)}
.devsec .muted{color:var(--cream-muted)}
.scrollx{overflow-x:auto}
.monly{display:none}
table.facts{min-width:980px}
table.facts td{height:auto;padding-top:16px;padding-bottom:16px;vertical-align:middle}
table.facts td:last-child,table.facts th:last-child{text-align:right}
.pst{display:block;font-size:13px;white-space:nowrap}
.pst .st{margin-left:4px}
.provgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 64px}
.provsec{border-top:2px solid var(--ink);padding:22px 0 30px}
.provsec h3{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.kv{margin:0 0 14px;display:grid;grid-template-columns:200px minmax(0,1fr);font-size:15px}
.kv dt,.kv dd{margin:0;padding:9px 0;border-bottom:1px solid var(--line)}
.kv dt{color:var(--muted)}
.provsec p{margin:0 0 12px;font-size:14px}
@media (max-width:1180px){.featbox{grid-template-columns:minmax(0,1fr);gap:24px}.featcta{justify-items:start;text-align:left}.hls{grid-template-columns:repeat(2,minmax(0,1fr))}.pbh{grid-template-columns:44px 48px minmax(0,1fr) auto}.pbh .btn{grid-column:1/-1;text-align:center}.pbfacts{grid-template-columns:repeat(2,minmax(0,1fr))}.pbfacts>div{border-bottom:1px solid var(--line)}.pbfacts>div:nth-child(2n){border-right:0}.pbbody{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.pbbody>div:last-child{grid-column:1/-1}.quiz{grid-template-columns:minmax(0,1fr)}.qhead{grid-row:auto}.devsec .wrap{grid-template-columns:minmax(0,1fr)}.open.hasfig .wrap{grid-template-columns:minmax(0,1fr) minmax(0,460px)}.prow{grid-template-columns:34px 150px minmax(0,1fr) minmax(0,1fr) auto}.prow>span:nth-of-type(3){display:none}.egrid{grid-template-columns:minmax(0,1fr)}.pgrid{grid-template-columns:minmax(0,1fr);gap:32px}.side2{position:static;max-width:520px}.cnav{overflow-x:auto}.provgrid{grid-template-columns:minmax(0,1fr)}}
@media (max-width:820px){
  .hls{grid-template-columns:minmax(0,1fr)}.pbh{grid-template-columns:36px 40px minmax(0,1fr);gap:12px 12px;padding:18px}.rank{width:36px;height:36px;font-size:16px}.pbh h3{font-size:20px}.pbprice{grid-column:1/-1;text-align:left;display:flex;align-items:baseline;gap:8px}.pbfacts>div{padding:12px 18px}.pbbody{grid-template-columns:minmax(0,1fr);gap:20px;padding:18px}.qres{grid-template-columns:44px minmax(0,1fr)}.qres .btn{grid-column:1/-1;text-align:center}.hero.art{-webkit-mask-image:none;mask-image:none}
  .open.hasfig .wrap{grid-template-columns:minmax(0,1fr);gap:8px;padding-bottom:24px}
  .flow{grid-template-columns:minmax(0,1fr);justify-items:center;padding:20px}.fline{width:2px;height:34px;margin:8px 0;background:repeating-linear-gradient(180deg,var(--ok) 0 8px,transparent 8px 16px);animation:none}.fline span{left:14px;top:8px;transform:none}.fline::after{right:-4px;top:auto;bottom:-2px;border-left:5px solid transparent;border-right:5px solid transparent;border-top:8px solid var(--ok);border-bottom:0}
  .prow{grid-template-columns:34px minmax(0,1fr);gap:6px 12px}.prow>span,.prow>a{grid-column:2}.prow>a{justify-self:start}
  .lastrow{grid-template-columns:30px minmax(0,1fr);gap:6px 12px}.lastrow>span{grid-column:2}
  .scrollx{display:none}.scrollx.keep{display:block}.monly{display:block}
  .cnav a{padding:10px 12px}
  .svcrow{grid-template-columns:30px minmax(0,1fr) auto;gap:6px 12px}
  .svcrow .muted,.svcrow a{grid-column:2/-1}
  .glist a{grid-template-columns:minmax(0,1fr) auto;gap:4px 12px}
  .glist span{grid-column:1/-1;grid-row:2}
  .glist b{font-size:17px}
  .kv{grid-template-columns:minmax(0,1fr)}
  .kv dt{border-bottom:0;padding-bottom:0}
}