:root{
  color-scheme:light;
  --ink:#181a1d;
  --muted:#596066;
  --rule:#d9dcd9;
  --paper:#fffefa;
  --canvas:#f1f1ec;
  --blue:#194cda;
  --accent:#194cda;
  --max:1260px;
  --sans:"Inter","Helvetica Neue",Arial,sans-serif;
  --display:"Instrument Sans","Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:22px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,[tabindex="0"]:focus-visible{outline:3px solid #064cdd;outline-offset:4px}
a:hover{text-decoration:underline;text-underline-offset:.18em}
h1,h2,h3,p,figure,ul,ol{margin:0}
h1,h2,h3{font-family:var(--display);font-weight:650;text-wrap:pretty}
button,input,select{font:inherit;color:inherit}
[hidden]{display:none!important}
.wrap{width:min(var(--max),calc(100% - clamp(36px,7.5vw,112px)));margin-inline:auto}
.skip-link{position:absolute;z-index:20;left:15px;top:-80px;padding:10px 15px;background:var(--ink);color:white}
.skip-link:focus{top:10px}
.arrow{display:inline-block;white-space:nowrap;font-family:Arial,sans-serif;font-size:1.16em;font-weight:400;line-height:1;transition:transform .16s}
a:hover .arrow{transform:translateX(3px)}
.masthead{background:var(--paper)}
.masthead-top{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:78px}
.wordmark{display:inline-flex;align-items:center;gap:11px;white-space:nowrap;font-family:var(--display);font-size:clamp(20px,2.1vw,30px);font-weight:740;letter-spacing:-.065em;line-height:1}
.wordmark:hover{text-decoration:none}
.wordmark img{width:39px;height:39px}
.wordmark b{font-weight:480}
.masthead-tools,.footer-bottom>div{display:flex;align-items:center;gap:25px}
.standards-link,.archive-link,.plain-link{font-size:14px;font-weight:600}
.standards-link{color:var(--muted)}
.archive-link,.plain-link{display:inline-flex;align-items:center;gap:9px}
.archive-link{color:var(--blue)}
.main-nav{border-top:1px solid var(--rule);border-bottom:1px solid var(--ink)}
.main-nav>.wrap{display:flex;align-items:center;column-gap:35px}
.main-nav a{position:relative;display:inline-block;padding:11px 0 12px;font-size:14px;font-weight:650;line-height:1.4}
.main-nav a[aria-current="page"]{color:var(--blue)}
.main-nav a[aria-current="page"]::after{content:"";height:3px;background:var(--blue);position:absolute;bottom:-1px;left:0;right:0}
[data-channel="phone-finder"]{--accent:#1d4cc6;--tone:#e5ecf7}
[data-channel="camera"]{--accent:#97503b;--tone:#f6e9e2}
[data-channel="battery-charging"]{--accent:#426554;--tone:#e8eee5}
[data-channel="software-support"]{--accent:#71568e;--tone:#eee9f3}
.home-page{padding-top:clamp(22px,2.7vw,42px)}
.cover-story{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);background:var(--canvas)}
.cover-copy{display:flex;align-items:flex-start;justify-content:center;flex-direction:column;min-width:0;padding:clamp(29px,3.65vw,62px);padding-right:clamp(26px,3.65vw,64px)}
.cover-meta,.byline,.story-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;font-size:12px;font-weight:600;line-height:1.3}
.cover-meta{margin-bottom:clamp(15px,1.65vw,24px);gap:13px}
.feature-label,.channel-tag{font-size:12px;font-weight:700}
.feature-label{color:#103aaf;letter-spacing:.105em;text-transform:uppercase}
.cover-meta .channel-tag{padding-left:13px;border-left:1px solid #b8bbb4}
.channel-tag{color:var(--accent);font-weight:650}
.cover-story h1{font-size:clamp(38px,3.9vw,62px);line-height:1.04;letter-spacing:-.066em;font-weight:640}
.cover-story h1 a:hover,.story-card h3 a:hover,.story-card h2 a:hover{color:#163ba3;text-decoration:none}
.cover-copy>p{font-size:clamp(15px,1.22vw,18px);line-height:1.5;color:#474b4e;max-width:44ch;margin-top:17px}
.button-link{display:inline-flex;align-items:center;gap:17px;margin-top:clamp(20px,2vw,32px);padding:11px 16px;background:var(--ink);color:#fff;font-weight:650;font-size:14px;line-height:1.35}
.button-link:hover{background:var(--blue);text-decoration:none}
.cover-picture,.channel-photo,.story-photo,.tile-picture,.article-photo{display:block;overflow:hidden;position:relative;background:#dededa}
.cover-picture{min-height:clamp(350px,30.6vw,468px)}
.cover-picture img,.channel-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cover-picture img{object-position:50% 50%}
.home-channels,.latest-section,.category-stories,.related{margin-top:clamp(35px,4.5vw,68px)}
.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-bottom:15px;border-bottom:1px solid var(--ink);margin-bottom:18px}
.section-title h2{font-size:clamp(24px,2.45vw,36px);letter-spacing:-.054em;line-height:1.12}
.plain-link{color:var(--blue);font-size:13px;flex-shrink:0}
.channel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-bottom:1px solid var(--rule);padding-bottom:17px}
.channel-tile{display:grid;align-items:center;grid-template-columns:clamp(45px,4.55vw,70px) 1fr;column-gap:clamp(9px,1.04vw,16px);position:relative;padding:3px clamp(9px,1.3vw,21px);border-left:1px solid var(--rule);min-width:0}
.channel-tile:first-child{border-left:0;padding-left:0}
.channel-tile:last-child{padding-right:0}
.channel-tile:hover{text-decoration:none}
.tile-picture{width:100%;aspect-ratio:.82;background:var(--tone)}
.tile-picture img,.story-photo img,.article-photo img{width:100%;height:100%;object-fit:cover}
.tile-text h3{font-size:clamp(16px,1.45vw,22px);letter-spacing:-.045em;line-height:1.12}
.tile-text span{display:block;line-height:1.35;font-size:12px;color:var(--muted);margin-top:6px}
.channel-tile>.arrow{color:var(--accent);grid-column:2;margin-top:4px;justify-self:start;font-size:17px;line-height:.5}
.channel-tile .tile-picture{grid-row:1 / span 2;align-self:stretch}
.channel-tile:hover h3{color:var(--accent)}
.story-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px clamp(18px,2.4vw,38px)}
.story-card{min-width:0}
.story-photo{width:100%;aspect-ratio:1.83}
.story-body{padding:15px 0 0}
.story-meta{gap:6px 13px;margin-bottom:8px}
.story-meta time{font-size:12px;color:var(--muted);font-weight:450}
.story-card h3,.story-card h2{font-size:clamp(22px,1.95vw,30px);letter-spacing:-.045em;line-height:1.13}
.story-card p{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.5}
.home-page,.channel-page,.archive-page,.reading-page{padding-bottom:clamp(48px,6vw,95px)}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:9px;font-size:12px;color:var(--muted);padding:21px 0 19px}
.crumbs a:hover{color:var(--blue)}
.channel-hero{display:grid;grid-template-columns:1fr 1fr;background:var(--tone);border-top:3px solid var(--accent)}
.channel-intro{padding:clamp(30px,4.7vw,75px);align-self:center}
.channel-intro h1,.archive-heading h1{font-size:clamp(45px,5.3vw,80px);line-height:.99;letter-spacing:-.066em}
.channel-intro p,.archive-heading p{margin-top:17px;max-width:47ch;font-size:clamp(16px,1.35vw,20px);line-height:1.5;color:#42464b}
.channel-photo{min-height:clamp(240px,20.8vw,340px)}
.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.category-grid .story-photo{aspect-ratio:2}
.category-grid .story-card h3{max-width:32ch}
.archive-heading{padding:13px 0 25px}
.archive-heading p{max-width:none}
.search-tools{display:flex;align-items:flex-end;flex-wrap:wrap;gap:15px;margin:0 0 17px;padding:20px;background:var(--canvas)}
.search-tools label{display:grid;gap:6px;font-size:13px;font-weight:650}
.query-field{flex:1 1 270px}
.topic-field{flex:0 1 215px}
.search-tools input,.search-tools select,.search-tools button{border:1px solid #a5aab0;border-radius:0;min-height:43px;background:#fff;padding:8px 10px;font-size:15px;font-weight:450;width:100%}
.search-tools button{width:auto;padding-inline:16px;font-weight:650;cursor:pointer;background:var(--ink);color:white;border-color:var(--ink)}
.archive-total{padding:8px 0 11px;margin-bottom:20px;font-weight:650;font-size:14px;border-bottom:1px solid var(--ink)}
.no-results{color:var(--muted);padding:15px 0}
.reading{max-width:1110px;margin:auto}
.reading-intro{max-width:880px;margin:clamp(34px,4.9vw,80px) auto 30px}
.byline{margin-bottom:17px;gap:9px 15px;color:var(--muted)}
.byline .channel-tag{border-left:3px solid var(--accent);padding-left:8px}
.byline span,.byline time{font-weight:500}
.reading-intro h1{font-size:clamp(38px,4.8vw,76px);font-weight:640;line-height:1.025;letter-spacing:-.065em}
.reading-intro .opening{margin-top:22px;font-size:clamp(18px,1.42vw,23px);line-height:1.58;color:#363a3e}
.reading-columns{display:grid;grid-template-columns:minmax(148px,.3fr) minmax(0,1fr);gap:clamp(26px,4vw,63px);align-items:start;margin-top:30px;border-top:1px solid var(--rule);padding-top:25px}
.contents{position:sticky;top:20px}
.contents h2{font-size:16px;font-weight:700;letter-spacing:-.025em}
.contents ul{list-style:none;padding:0;margin:11px 0 0}
.contents li{padding:9px 0;border-bottom:1px solid var(--rule);font-size:13px;line-height:1.4;color:var(--muted)}
.contents a:hover{color:var(--blue)}
.reading-body{width:100%;max-width:790px}
.article-photo{aspect-ratio:2.05}
.prose-section{margin-top:33px;font-size:17px;line-height:1.7}
.prose-section h2,.source-list h2,.standards-page h2{font-size:clamp(25px,2.3vw,35px);letter-spacing:-.043em;line-height:1.15;margin-bottom:14px}
.prose-section p+p{margin-top:13px}
.prose-section ul,.source-list ul{padding-left:1.3em;margin-top:14px}
.prose-section li+li,.source-list li+li{margin-top:6px}
.table-wrap{overflow:auto;margin-top:20px;max-width:100%;border-top:2px solid var(--ink)}
table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.5}
td,th{text-align:left;vertical-align:top;padding:11px;border-bottom:1px solid var(--rule)}
thead{background:var(--canvas)}
tbody th{min-width:7em;font-weight:650}
.source-list{border-top:1px solid var(--ink);margin-top:37px;padding-top:21px}
.source-list a,.standards-page main a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.site-footer{border-top:1px solid var(--ink);background:#f2f2ed}
.footer-top,.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:18px}
.footer-top{padding:32px 0 28px}
.footer-top nav{display:flex;flex-wrap:wrap;gap:9px 18px;font-size:13px;font-weight:600}
.footer-top .wordmark{font-size:22px}
.footer-top .wordmark img{width:31px;height:31px}
.footer-bottom{border-top:1px solid var(--rule);padding:14px 0 22px;font-size:12px;color:var(--muted)}
@media(max-width:940px){
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 0}
  .channel-tile{grid-template-columns:65px 1fr;padding-inline:17px}
  .channel-tile:nth-child(odd){border-left:0;padding-left:0}
  .channel-tile:nth-child(even){padding-right:0}
  .tile-text h3{font-size:20px}
  .story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cover-copy{padding:30px}
  .cover-picture{min-height:330px}
  .footer-top{align-items:flex-start;flex-direction:column}
}
@media(max-width:700px){
  .masthead-top{min-height:62px}
  .wordmark{font-size:22px;gap:8px}
  .wordmark img{width:31px;height:31px}
  .standards-link{display:none}
  .main-nav>.wrap{column-gap:22px}
  .main-nav a{font-size:13px;padding:9px 0}
  .cover-story{grid-template-columns:1fr}
  .cover-copy{padding:24px}
  .cover-story h1{font-size:clamp(35px,6.7vw,45px)}
  .cover-meta{margin-bottom:12px}
  .cover-copy>p{margin-top:11px;max-width:57ch}
  .button-link{margin-top:17px;padding:9px 13px}
  .cover-picture{aspect-ratio:2.25;min-height:0}
  .channel-intro{padding:25px}
  .channel-hero{grid-template-columns:1fr .8fr}
  .channel-intro h1,.archive-heading h1{font-size:40px}
  .channel-intro p{font-size:15px;margin-top:12px}
  .channel-photo{min-height:200px}
  .category-grid{gap:22px}
  .reading-columns{display:block;padding-top:16px;margin-top:22px}
  .contents{position:static;margin-bottom:20px}
  .contents ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 15px}
  .article-photo{aspect-ratio:1.85}
  .reading-intro{margin:29px 0 20px}
  .reading-intro .opening{margin-top:15px}
}
@media(max-width:540px){
  .wrap{width:calc(100% - 32px)}
  .masthead-top{gap:7px}
  .masthead-tools{gap:0}
  .archive-link{font-size:12px;gap:4px}
  .main-nav>.wrap{justify-content:space-between;column-gap:5px}
  .main-nav a{font-size:clamp(10px,2.9vw,13px);letter-spacing:-.032em}
  .home-page{padding-top:16px}
  .cover-copy{padding:21px 20px 22px}
  .cover-picture{aspect-ratio:1.95}
  .cover-copy>p{font-size:15px}
  .feature-label,.cover-meta .channel-tag{font-size:11px}
  .section-title{margin-bottom:13px;padding-bottom:10px}
  .section-title h2{font-size:25px}
  .channel-grid{gap:11px 0;padding-bottom:13px}
  .channel-tile{align-items:start;grid-template-columns:43px 1fr;gap:3px 7px;padding-inline:9px}
  .channel-tile .tile-picture{aspect-ratio:auto;min-height:64px}
  .tile-text h3{font-size:16px}
  .tile-text span{font-size:11px;line-height:1.3;margin-top:3px}
  .channel-tile>.arrow{display:none}
  .story-grid{grid-template-columns:1fr;gap:25px}
  .story-card h2,.story-card h3{font-size:24px}
  .story-body{padding-top:11px}
  .story-card p{margin-top:6px}
  .channel-hero{grid-template-columns:1fr}
  .channel-intro{padding:22px}
  .channel-photo{min-height:0;aspect-ratio:2.8}
  .crumbs{padding:14px 0}
  .footer-bottom>span{display:none}
  .footer-top{padding:25px 0 20px;gap:17px}
  .footer-top nav{gap:9px 15px}
  .search-tools{padding:14px;gap:10px}
  .query-field{flex-basis:100%}
  .topic-field{flex:1}
  .table-wrap th,.table-wrap td{padding:8px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .arrow{transition:none}
}
.policy{width:min(750px,calc(100% - 40px));margin:clamp(34px,5vw,78px) auto clamp(58px,8vw,115px);line-height:1.65;overflow-wrap:anywhere}
.policy>a:first-child{display:inline-flex;align-items:center;font-size:13px;margin-bottom:17px;color:var(--muted)}
.policy h1{font-size:clamp(41px,5.1vw,72px);letter-spacing:-.065em;line-height:1.03;margin-bottom:22px}
.policy h1+p{font-size:clamp(18px,1.5vw,21px);line-height:1.55;color:#3d4246}
.policy h2{font-size:clamp(24px,2.7vw,34px);letter-spacing:-.04em;line-height:1.16;margin:31px 0 11px}
.policy p+p{margin-top:13px}
.policy ul{padding-left:1.3em;margin-top:11px}
.policy li+li{margin-top:6px}
.policy a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
@media(max-width:540px){.policy{width:calc(100% - 32px)}}