:root {
  --paper: #F0F2F1;
  --warm: #FAF8F4;
  --ink: #242B2C;
  --body: #444C4D;
  --muted: #697574;
  --line: #D8DEDC;
  --copper: #A47E63;
  --teal: #527575;
  --deep: #303B3B;
  --shell: 1320px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; background: var(--paper); color: var(--body); font: 16px/1.8 "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
h1,h2,h3,h4,p,figure,dl,dd { margin: 0; }
h1,h2,h3,h4 { color: var(--ink); font-weight: 600; }
h1 { font-size: 52px; line-height: 1.3; letter-spacing: -1.7px; }
h2 { font-size: 34px; line-height: 1.4; letter-spacing: -.8px; }
h3 { font-size: 21px; line-height: 1.5; letter-spacing: -.25px; }
p + p { margin-top: 16px; }
a { color: inherit; text-decoration: none; text-underline-offset: 5px; }
a:hover { color: var(--teal); }
button { font: inherit; cursor: pointer; }
button:disabled { cursor: wait; }
img { display: block; max-width: 100%; height: auto; }
figure img { width: 100%; object-fit: cover; }
figcaption { display: flex; justify-content: space-between; gap: 18px; padding-top: 13px; color: var(--muted); font-size: 11px; line-height: 1.6; letter-spacing: .2px; }
::selection { background: #d8e3df; color: var(--ink); }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 5px; }
.shell { width: min(var(--shell), calc(100% - 96px)); margin-inline: auto; }
.reading-shell { width: min(1080px, calc(100% - 160px)); margin-inline: auto; }
.eyebrow,.index-label { font-size: 10px; font-weight: 500; line-height: 1.7; letter-spacing: 1.9px; color: var(--teal); }
.eyebrow { margin-bottom: 15px; }
.index-label { display: block; margin-bottom: 12px; }
.lead { font-size: 19px; line-height: 1.8; }
.small-note { font-size: 12px; line-height: 1.8; color: var(--muted); }
.text-link { display: inline-flex; align-items: baseline; gap: 15px; font-size: 13px; font-weight: 500; color: var(--teal); padding-bottom: 4px; border-bottom: 1px solid #aabbbb; }
.text-link:hover { border-color: var(--copper); color: #795943; }
.text-link span { margin-left: auto; font-family: system-ui, sans-serif; }
.download-btn, #manualDownload { background: var(--copper); color: #fff; display: inline-flex; align-items: center; justify-content: space-between; gap: 32px; padding: 13px 24px; border: 0; border-radius: 2px; font-size: 14px; line-height: 1.5; font-weight: 500; }
.download-btn:hover,#manualDownload:hover { background: #8c694f; color: #fff; }
.download-btn span { font-size: 18px; }
.skip-link { position: absolute; z-index: 30; background: var(--warm); padding: 12px 20px; transform: translateY(-120%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); background: var(--paper); }
.header-inner { display: flex; align-items: center; gap: 34px; min-height: 90px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); flex-shrink: 0; }
.brand>span { font-size: 21px; line-height: 1.3; font-weight: 600; letter-spacing: -.4px; }
.brand small { display: block; margin-top: 7px; font-size: 8px; font-weight: 500; letter-spacing: 1.45px; color: var(--muted); }
.brand img { width: 42px; height: 42px; }
#site-navigation { display: flex; align-items: center; gap: 27px; margin-left: auto; }
#site-navigation a { font-size: 13px; color: var(--body); padding-block: 32px; position: relative; white-space: nowrap; }
#site-navigation a:hover { color: var(--teal); }
#site-navigation a[aria-current="page"] { color: var(--teal); }
#site-navigation a[aria-current="page"]::after { content: ""; position: absolute; height: 2px; width: 14px; bottom: 23px; left: 0; background: var(--teal); }
.header-download { background: transparent; border: 1px solid #b9aaa0; color: var(--ink); font-size: 12px; padding: 10px 15px; gap: 20px; }
.menu-toggle { display: none; background: transparent; border: 0; padding: 12px 0 12px 12px; color: var(--ink); font-size: 12px; }
.menu-icon { width: 20px; height: 12px; border-top: 1px solid; border-bottom: 1px solid; display: inline-block; margin-right: 9px; vertical-align: -1px; }
.device-lab-hero { display: grid; grid-template-columns: minmax(0,60fr) minmax(0,37fr); gap: 3%; min-height: 598px; padding-block: 58px 64px; align-items: start; }
.hero-photograph { padding-top: 0; }
.hero-photograph img { height: 395px; object-position: center; }
.hero-photograph figcaption { border-top: 1px solid var(--line); margin-top: 15px; }
.hero-photograph figcaption span:last-child { letter-spacing: 1px; font-size: 9px; white-space: nowrap; }
.hero-copy { border-left: 1px solid var(--line); padding-left: 28px; margin-top: 30px; }
.hero-copy .eyebrow { display: flex; flex-wrap: wrap; gap: 7px 17px; margin-bottom: 18px; color: var(--ink); }
.hero-copy .eyebrow span { color: var(--muted); font-size: 9px; letter-spacing: 1.25px; }
.hero-copy h1 { font-size: 50px; line-height: 1.27; letter-spacing: -1.6px; }
.hero-intro { font-size: 14px; line-height: 1.85; margin-top: 21px; }
.hero-actions { margin-top: 27px; display: flex; flex-wrap: wrap; align-items: center; gap: 15px 23px; }
.hero-note { font-size: 10px; line-height: 1.8; color: var(--muted); margin-top: 15px; }
.section-heading { margin-bottom: 32px; }
.section-heading .eyebrow { margin-bottom: 12px; }
.horizontal-heading { display: flex; justify-content: space-between; align-items: end; gap: 36px; }
.horizontal-heading>p { font-size: 12px; color: var(--muted); line-height: 1.9; }
.section-warm { background: var(--warm); }
.connection-conditions { padding-block: 25px 66px; border-top: 1px solid var(--line); }
.connection-conditions .section-heading { padding-top: 13px; }
.condition-columns { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 60px; }
.condition-lead { padding-right: 18px; }
.small-marker { width: 24px; height: 7px; display: block; background: var(--teal); margin-bottom: 28px; }
.condition-lead h3 { font-size: 27px; }
.condition-columns article>p { font-size: 14px; margin: 12px 0 15px; }
.condition-lead .small-note { font-size: 11px; margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); max-width: 245px; }
.condition-middle h3,.condition-right h3 { font-size: 18px; }
.condition-middle article+article { margin-top: 24px; }
.condition-right { border-left: 1px solid var(--line); padding-left: 32px; }
.condition-right article:last-child { max-width: 230px; margin: 42px 0 0 auto; }
.apk-source { padding-block: 64px 65px; }
.apk-layout { display: grid; grid-template-columns: minmax(0,1.65fr) minmax(0,1fr); gap: 54px; }
.apk-layout img { height: 420px; object-position: 50% 40%; }
.apk-notes { padding-top: 10px; }
.apk-notes article+article { border-top: 1px solid var(--line); margin-top: 22px; padding-top: 20px; }
.apk-notes p { font-size: 14px; margin-top: 10px; }
.apk-notes .text-link { margin-top: 17px; }
.desktop-interface { padding-block: 73px 62px; }
.desktop-panorama { width: 75%; }
.desktop-panorama img { height: 375px; object-position: center 55%; }
.desktop-annotations { display: grid; grid-template-columns: 1fr 1.18fr; gap: 75px; width: 74%; margin: 35px 0 0 auto; }
.desktop-annotations article:first-child { max-width: 325px; }
.desktop-annotations p { font-size: 14px; margin-top: 10px; }
.desktop-annotations .text-link { margin-top: 16px; }
.client-preparation { padding-block: 57px 65px; border-top: 1px solid var(--line); }
.preparation-intro .lead { max-width: 850px; margin-top: 20px; }
.preparation-body { display: grid; grid-template-columns: minmax(0,1.7fr) minmax(0,.8fr); gap: 62px; margin-top: 30px; }
.preparation-body>div>p { font-size: 14px; }
.preparation-photo { padding-top: 3px; }
.preparation-photo img { height: 225px; }
.short-notes { display: grid; grid-template-columns: 1.1fr 1fr; gap: 35px; margin-top: 25px; }
.short-notes h3 { font-size: 17px; }
.short-notes p { font-size: 13px; margin-top: 8px; }
.inline-actions { display: flex; align-items: center; gap: 25px; flex-wrap: wrap; margin-top: 27px; }
.free-information { border-top: 1px solid var(--line); padding-block: 40px 60px; }
.free-layout { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.45fr); gap: 65px; }
.free-layout>div p { font-size: 15px; }
.free-layout .text-link { margin-top: 20px; }
.network-journal { padding-block: 38px 64px; }
.network-layout { display: grid; grid-template-columns: minmax(0,1.55fr) minmax(0,1fr); gap: 60px; }
.network-layout img { height: 365px; object-position: 50% 60%; }
.network-layout p { font-size: 14px; margin-top: 10px; }
.network-layout .text-link { margin-top: 15px; }
.network-secondary { margin-top: 32px; margin-left: 32px; }
.network-reminder { border-top: 1px solid var(--line); margin-top: 27px; padding-top: 15px; font-size: 12px; }
.network-reminder span { color: var(--teal); margin-right: 26px; }
.connection-check { padding-block: 57px 60px; }
.symptom-table>div { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.45fr); gap: 35px; padding-block: 21px; border-bottom: 1px solid var(--line); }
.symptom-table .symptom-heading { padding-block: 10px; border-bottom: 1px solid #a5b3b0; font-size: 11px; color: var(--teal); letter-spacing: 1.2px; }
.symptom-table h3 { font-size: 18px; }
.symptom-table p { font-size: 14px; }
.connection-check>.reading-shell>.text-link { margin-top: 25px; }
.article-preview { padding-block: 64px 58px; }
.preview-layout { display: grid; grid-template-columns: 1.45fr 1fr .95fr; gap: 50px; }
.preview-feature { padding-right: 24px; border-right: 1px solid var(--line); }
.preview-feature h3 { font-size: 29px; margin: 24px 0 17px; }
.preview-layout p { font-size: 14px; }
.preview-layout .text-link { margin-top: 20px; }
.preview-photo img { height: 130px; }
.preview-photo .index-label { margin-top: 18px; }
.preview-photo h3 { font-size: 20px; margin-bottom: 12px; }
.preview-quiet { align-self: end; max-width: 260px; margin-left: auto; padding-bottom: 14px; }
.preview-quiet h3 { font-size: 23px; margin-bottom: 15px; }
.device-questions { padding-block: 40px 67px; border-top: 1px solid var(--line); }
.faq-layout { display: grid; grid-template-columns: repeat(12,minmax(0,1fr)); gap: 0 30px; margin-top: 23px; }
.faq-record { border-top: 1px solid var(--line); padding-block: 23px; }
.faq-record h3 { font-size: 18px; }
.faq-record p { margin-top: 10px; font-size: 14px; }
.faq-lead { grid-column: 1/10; border-top: 0; }
.faq-left { grid-column: 1/7; }
.faq-right { grid-column: 8/13; padding-top: 46px; }
.faq-short { grid-column: 1/6; }
.faq-wide { grid-column: 7/13; }
.faq-last { grid-column: 1/-1; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 6px 11px; padding-top: 29px; font-size: 11px; line-height: 1.8; color: var(--muted); }
.breadcrumbs span[aria-current] { max-width: 100%; overflow-wrap: anywhere; }
.page-heading { padding-block: 43px 40px; }
.page-heading h1 { margin-bottom: 22px; max-width: 1010px; }
.page-heading .lead { max-width: 800px; }
.page-panorama img { height: 380px; object-position: center 40%; }
.download-record { display: grid; grid-template-columns: minmax(0,1.65fr) minmax(0,.65fr); gap: 90px; padding-block: 48px 54px; }
.download-intro h2 { margin-bottom: 21px; }
.download-intro>p { font-size: 15px; }
.download-intro .download-btn { margin-top: 25px; }
.download-intro .small-note { margin-top: 12px; font-size: 11px; }
.margin-record { padding: 12px 0 0 30px; border-left: 1px solid var(--line); }
.margin-record>p { line-height: 2.2; font-size: 17px; color: var(--muted); margin-bottom: 30px; }
.download-preflight { padding-block: 35px 50px; border-block: 1px solid var(--line); }
.uneven-columns { display: grid; grid-template-columns: 1fr 1.25fr .9fr; gap: 55px; }
.uneven-columns p { margin-top: 12px; font-size: 14px; }
.uneven-columns .text-link { margin-top: 18px; }
.plain-checks { padding-block: 44px 50px; }
.plain-checks>p { margin-top: 20px; }
.check-copy { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px 55px; margin-top: 25px; }
.check-copy h3 { font-size: 19px; }
.check-copy p { font-size: 14px; margin-top: 10px; }
.check-copy article:last-child:nth-child(3) { grid-column: 1/-1; max-width: 780px; border-top: 1px solid var(--line); padding-top: 25px; }
.related-reading { padding-block: 31px 50px; border-top: 1px solid var(--line); }
.related-reading h2 { font-size: 25px; }
.related-reading>div { display: flex; flex-wrap: wrap; gap: 16px 35px; margin-top: 23px; }
.related-reading .text-link { font-size: 13px; max-width: 100%; }
.android-observation { display: grid; grid-template-columns: 1.7fr .65fr; gap: 80px; align-items: center; padding-bottom: 40px; }
.android-closeup img { height: 450px; object-position: 50% 35%; }
.android-margin p { font-size: 25px; line-height: 2; color: var(--muted); margin-block: 24px 35px; }
.source-checklist { padding-block: 20px 55px; }
.observation-list { margin-top: 25px; }
.observation-list>div { display: grid; grid-template-columns: .8fr 1.4fr; gap: 40px; border-top: 1px solid var(--line); padding-block: 22px; }
.observation-list dt { color: var(--ink); font-size: 18px; font-weight: 500; }
.observation-list dd { font-size: 15px; }
.source-checklist>.text-link { margin-top: 10px; }
.android-after { padding-block: 49px; }
.pc-panorama img { height: 410px; object-position: 50% 50%; }
.desktop-preflight { padding-block: 42px 57px; }
.desktop-preflight h2 { font-size: 27px; }
.interface-change { padding-block: 39px 55px; border-top: 1px solid var(--line); }
.interface-change .text-link { margin-top: 16px; }
.interface-change>.small-note { margin-top: 15px; }
.chapter-navigation { display: flex; flex-wrap: wrap; border-block: 1px solid var(--line); padding-block: 12px; gap: 0 30px; }
.chapter-navigation a { display: inline-flex; gap: 16px; padding: 8px 0; font-size: 13px; }
.chapter-navigation span { color: var(--teal); }
.guide-devices { padding-block: 49px 60px; display: grid; grid-template-columns: .75fr 1.25fr; gap: 35px 60px; }
.chapter-heading>p:last-child { margin-top: 18px; font-size: 14px; }
.guide-devices>figure img { height: 365px; }
.device-notes { grid-column: 1/-1; display: grid; grid-template-columns: 1fr 1.2fr; gap: 75px; margin-top: 4px; }
.device-notes p { font-size: 14px; margin-top: 11px; }
.device-notes .text-link { margin: 15px 25px 0 0; }
.remote-record { grid-column: 1/-1; display: grid; grid-template-columns: .7fr 1fr; gap: 45px; align-items: center; max-width: 820px; margin-left: auto; }
.remote-record img { height: 155px; }
.remote-record>p { font-size: 13px; color: var(--muted); }
.guide-home { padding-block: 53px; }
.home-network-photo { width: 83%; margin-bottom: 32px; }
.home-network-photo img { height: 335px; object-position: 50% 60%; }
.guide-wired { display: grid; grid-template-columns: 1.15fr 1fr; gap: 60px; padding-block: 61px; align-items: center; }
.guide-wired h2 { margin-bottom: 20px; }
.guide-wired p { font-size: 14px; }
.guide-wired .text-link { margin-top: 22px; }
.guide-wired img { height: 315px; }
.guide-mobile { padding-block: 28px 60px; display: grid; grid-template-columns: .78fr 1.3fr; gap: 35px 65px; }
.guide-mobile>figure img { height: 365px; }
.mobile-notes { grid-column: 2; display: grid; grid-template-columns: 1fr .85fr; gap: 30px; }
.mobile-notes h3 { font-size: 18px; }
.mobile-notes p { font-size: 14px; margin-top: 10px; }
.guide-public { padding-block: 50px 57px; }
.public-layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 45px; align-items: center; margin-top: 30px; }
.public-layout img { height: 305px; }
.public-layout p { font-size: 14px; }
.public-layout .text-link { margin-top: 20px; }
.guide-page .free-information { border-top: 0; padding-block: 58px; }
.guide-connection { padding-block: 35px 57px; border-block: 1px solid var(--line); }
.review-layout { display: grid; grid-template-columns: 1.9fr .9fr; gap: 45px; }
.review-layout .symptom-table>div { grid-template-columns: 1fr; gap: 10px; }
.review-layout figure { align-self: center; }
.review-layout img { height: 285px; }
.guide-connection>.text-link { margin-top: 22px; }
.guide-issues { padding-block: 45px 55px; }
.open-question-list { margin-top: 28px; }
.open-question-list article { border-top: 1px solid var(--line); padding-block: 23px; display: grid; grid-template-columns: .8fr 1.4fr; gap: 45px; }
.open-question-list h3 { font-size: 18px; }
.open-question-list p { font-size: 14px; }
.open-question-list .text-link { display: inline-flex; margin: 12px 18px 0 0; font-size: 12px; }
.notebook-directory { border-top: 1px solid var(--line); padding-block: 38px 45px; }
.notebook-directory>div { margin-top: 27px; }
.notebook-directory>div>a { display: grid; grid-template-columns: .6fr 1.5fr 30px; gap: 25px; align-items: baseline; padding-block: 20px; border-top: 1px solid var(--line); }
.notebook-directory span { font-size: 10px; color: var(--muted); letter-spacing: .6px; }
.notebook-directory strong { font-size: 17px; font-weight: 500; }
.notebook-directory b { color: var(--teal); font-weight: 400; }
.about-opening { display: grid; grid-template-columns: 1.7fr .65fr; gap: 95px; padding-block: 43px 47px; }
.about-opening .lead { margin-top: 25px; }
.about-opening>div>p:last-child { font-size: 15px; }
.about-margin { border-left: 1px solid var(--line); padding: 10px 0 0 34px; }
.about-margin>span { display: block; font: 33px/1.8 system-ui,sans-serif; letter-spacing: 1px; color: #879894; }
.about-margin p { margin-top: 35px; font-size: 12px; }
.about-photograph img { height: 365px; object-position: center 40%; }
.about-records { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; padding-block: 53px; }
.about-records h2 { font-size: 27px; }
.about-records p:not(.eyebrow) { font-size: 15px; margin-top: 18px; }
.about-records .text-link { margin-top: 21px; }
.article-heading h1 { max-width: 980px; font-size: 46px; line-height: 1.4; text-wrap: balance; }
.article-heading .lead { font-size: 17px; }
.article-cover { width: min(1080px, calc(100% - 160px)); }
.article-cover img { height: 480px; object-position: center 20%; }
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 240px; gap: 70px; padding-block: 44px 50px; }
.article-body { font-size: 16px; line-height: 1.9; }
.article-body section+section { margin-top: 38px; }
.article-body h2 { font-size: 28px; margin-bottom: 20px; }
.article-body h3 { font-size: 20px; margin-block: 22px 14px; }
.article-body a { text-decoration: underline; color: var(--teal); }
.check-list { padding-left: 22px; margin-block: 20px; }
.check-list li { margin-bottom: 11px; padding-left: 5px; }
.check-list li::marker { color: var(--teal); }
.article-note { border-left: 3px solid var(--teal); background: var(--warm); padding: 16px 20px; margin-block: 24px; font-size: 15px; }
.article-body .observation-list>div { grid-template-columns: 1fr; gap: 9px; padding-block: 18px; }
.article-body .observation-list dt { font-size: 16px; }
.article-body .observation-list dd { font-size: 15px; }
.article-aside { align-self: start; position: sticky; top: 32px; border-left: 1px solid var(--line); padding-left: 25px; }
.article-aside nav a { display: block; font-size: 12px; line-height: 1.8; padding-block: 10px; border-bottom: 1px solid var(--line); }
.aside-note { margin-top: 30px; }
.aside-note p { font-size: 11px; color: var(--muted); }
.aside-note .text-link { margin-top: 17px; font-size: 11px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; margin-block: 25px; table-layout: fixed; }
caption { text-align: left; color: var(--teal); font-size: 12px; margin-bottom: 12px; }
th,td { text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); padding: 13px 15px 13px 0; overflow-wrap: anywhere; }
th { color: var(--ink); font-weight: 500; border-top: 1px solid #a5b3b0; }
.site-footer { background: #e6eae7; border-top: 1px solid #c9d1cd; padding-block: 38px 28px; }
.footer-brief { display: flex; align-items: start; gap: 66px; padding-bottom: 28px; border-bottom: 1px solid #c9d1cd; }
.footer-brief>p { font-size: 13px; line-height: 1.9; }
.footer-brief>.eyebrow { margin: 7px 0 0 auto; font-size: 9px; }
.footer-index { display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; padding-block: 27px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 26px; }
.footer-links a { font-size: 12px; }
.footer-index .index-label { font-size: 10px; letter-spacing: .9px; margin-bottom: 14px; }
.friend-links { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; font-size: 11px; margin-bottom: 24px; }
.friend-links>span { color: var(--muted); }
.footer-legal { text-align: center; border-top: 1px solid #c9d1cd; padding-top: 20px; font-size: 10px; line-height: 2; }
.footer-legal>p { margin-block: 6px; }
.footer-legal>div { display: flex; justify-content: center; gap: 8px 25px; flex-wrap: wrap; }
.download-transition { min-height: 100vh; display: grid; place-items: center; padding: 45px 24px; }
.transition-sheet { width: min(440px,100%); text-align: center; }
.transition-sheet>img { margin: 0 auto 30px; }
.transition-sheet .eyebrow { font-size: 9px; }
.transition-sheet h1 { font-size: 31px; letter-spacing: -.5px; margin-block: 12px 22px; }
.transition-sheet>p:not(.eyebrow) { font-size: 14px; }
.transition-sheet .countdown-text { margin-top: 29px; font-size: 12px!important; color: var(--muted); }
.countdown-text strong { font-size: 24px; color: var(--copper); margin-right: 5px; font-weight: 500; }
.download-progress { height: 3px; margin: 20px 0 28px; background: var(--line); overflow: hidden; }
.download-progress>span { display: block; height: 100%; width: 0; background: var(--copper); }
#manualDownload { min-width: 175px; justify-content: center; }
.transition-sheet noscript p { margin-top: 25px; }
@media (min-width: 1600px) {
  .device-lab-hero { min-height: 615px; }
  .hero-copy { margin-top: 40px; }
  .hero-copy h1 { font-size: 53px; }
}
@media (max-width: 1200px) {
  .shell { width: calc(100% - 64px); }
  .reading-shell { width: calc(100% - 96px); }
  .header-inner { gap: 23px; }
  #site-navigation { gap: 20px; }
  .brand>span { font-size: 20px; }
  .brand small { font-size: 7px; letter-spacing: 1px; }
  .header-download { gap: 12px; padding-inline: 12px; }
  .device-lab-hero { min-height: 555px; padding-block: 45px 51px; grid-template-columns: minmax(0,59fr) minmax(0,38fr); }
  .hero-copy { padding-left: 22px; margin-top: 20px; }
  .hero-copy h1 { font-size: 43px; }
  .hero-photograph img { height: 370px; }
  .hero-intro { font-size: 13px; }
  .hero-actions { gap: 15px; margin-top: 22px; }
  .hero-actions .download-btn { gap: 22px; padding-inline: 18px; }
  .condition-columns { gap: 35px; }
  .apk-layout,.network-layout { gap: 38px; }
  .apk-layout img { height: 385px; }
  .desktop-annotations { gap: 45px; }
  .preparation-body,.free-layout { gap: 44px; }
  .uneven-columns { gap: 34px; }
  .preview-layout { gap: 33px; }
  .preview-feature h3 { font-size: 25px; }
  .article-layout { gap: 40px; grid-template-columns: minmax(0,1fr) 210px; }
  .about-opening { gap: 65px; }
  .footer-brief { gap: 36px; }
  .footer-brief>.eyebrow { max-width: 140px; text-align: right; }
}
@media (max-width: 1024px) {
  h1 { font-size: 45px; }
  h2 { font-size: 30px; }
  .header-inner { gap: 20px; }
  #site-navigation { gap: 16px; }
  #site-navigation a { font-size: 12px; }
  .brand img { width: 36px; height: 36px; }
  .brand { gap: 9px; }
  .hero-copy h1 { font-size: 39px; }
  .hero-photograph img { height: 365px; }
  .hero-photograph figcaption span:last-child { display: none; }
  .hero-copy .eyebrow { margin-bottom: 14px; }
  .hero-copy .eyebrow span { font-size: 8px; }
  .hero-intro { margin-top: 16px; }
  .hero-actions .text-link { font-size: 12px; }
  .apk-layout { grid-template-columns: 1.45fr 1fr; gap: 32px; }
  .apk-layout img { height: 400px; }
  .apk-notes article+article { margin-top: 19px; padding-top: 17px; }
  .apk-notes h3 { font-size: 19px; }
  .apk-notes p { font-size: 13px; }
  .condition-lead h3 { font-size: 24px; }
  .desktop-panorama img { height: 315px; }
  .desktop-annotations { width: 83%; }
  .network-layout { gap: 34px; }
  .network-layout img { height: 380px; }
  .network-secondary { margin-left: 10px; }
  .preview-layout { grid-template-columns: 1.25fr 1fr .9fr; gap: 26px; }
  .preview-feature { padding-right: 18px; }
  .preview-feature h3 { font-size: 23px; }
  .preview-quiet h3 { font-size: 20px; }
  .android-observation { gap: 45px; }
  .android-closeup img { height: 385px; }
  .android-margin p { font-size: 21px; }
  .guide-devices,.guide-mobile { gap: 35px; }
  .guide-devices>figure img,.guide-mobile>figure img { height: 315px; }
  .guide-wired { gap: 37px; }
  .public-layout { gap: 35px; }
  .article-heading h1 { font-size: 40px; }
  .article-cover img { height: 330px; }
  .footer-index { gap: 45px; }
}
@media (max-width: 900px) {
  .header-inner { min-height: 76px; flex-wrap: wrap; gap: 0 25px; padding-block: 17px; }
  .menu-toggle { display: block; margin-left: auto; order: 2; }
  .header-download { order: 1; margin-left: auto; }
  #site-navigation { display: none; order: 3; flex-basis: 100%; margin: 18px 0 0; border-top: 1px solid var(--line); padding-top: 8px; }
  #site-navigation.is-open { display: grid; grid-template-columns: repeat(3,1fr); gap: 0 25px; }
  #site-navigation a { padding-block: 12px; font-size: 13px; }
  #site-navigation a[aria-current="page"]::after { bottom: 8px; }
  .device-lab-hero { min-height: 0; grid-template-columns: 1.25fr 1fr; gap: 25px; padding-block: 40px 50px; }
  .hero-copy { margin-top: 14px; padding-left: 20px; }
  .hero-copy h1 { font-size: 33px; letter-spacing: -1px; }
  .hero-photograph img { height: 340px; }
  .hero-actions { align-items: start; flex-direction: column; gap: 16px; }
  .hero-intro { font-size: 13px; line-height: 1.85; }
  .condition-columns { grid-template-columns: 1.2fr 1fr; gap: 34px; }
  .condition-right { grid-column: 1/-1; display: grid; grid-template-columns: 1.2fr 1fr; gap: 45px; border-left: 0; border-top: 1px solid var(--line); padding: 23px 0 0; }
  .condition-right article:last-child { margin: 0; max-width: none; }
  .apk-layout { grid-template-columns: 1.3fr 1fr; gap: 28px; }
  .apk-layout img { height: 440px; }
  .horizontal-heading { gap: 25px; }
  .horizontal-heading>p { max-width: 180px; }
  .desktop-panorama { width: 86%; }
  .desktop-annotations { width: 90%; gap: 35px; }
  .preparation-body { gap: 32px; grid-template-columns: 1.55fr .9fr; }
  .preparation-photo img { height: 240px; }
  .free-layout { gap: 35px; grid-template-columns: .8fr 1.25fr; }
  .free-layout h2 { font-size: 28px; }
  .network-layout { grid-template-columns: 1.2fr 1fr; gap: 27px; }
  .network-layout img { height: 410px; }
  .network-layout h3 { font-size: 19px; }
  .network-secondary { margin-left: 0; }
  .preview-layout { grid-template-columns: 1.3fr 1fr; gap: 32px; }
  .preview-quiet { grid-column: 2; margin: 0; max-width: none; }
  .preview-feature { grid-row: span 2; }
  .preview-photo img { height: 145px; }
  .uneven-columns { gap: 30px; grid-template-columns: 1fr 1fr; }
  .uneven-columns>article:last-child { grid-column: 1/-1; max-width: 700px; border-top: 1px solid var(--line); padding-top: 25px; }
  .download-record { gap: 42px; }
  .margin-record { padding-left: 23px; }
  .android-observation { gap: 35px; }
  .android-margin .index-label { font-size: 9px; }
  .android-margin p { font-size: 19px; }
  .pc-panorama img { height: 350px; }
  .guide-devices { grid-template-columns: .8fr 1.2fr; gap: 27px; }
  .guide-devices>figure img { height: 305px; }
  .device-notes { gap: 35px; }
  .home-network-photo { width: 100%; }
  .guide-wired { grid-template-columns: 1fr; gap: 28px; }
  .guide-wired figure { width: 75%; margin-left: auto; }
  .guide-mobile { grid-template-columns: .8fr 1.2fr; gap: 30px; }
  .guide-mobile>figure img { height: 310px; }
  .mobile-notes { grid-column: 1/-1; gap: 35px; }
  .public-layout { grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
  .public-layout img { height: 360px; }
  .review-layout { gap: 30px; grid-template-columns: 1.7fr 1fr; }
  .open-question-list article { gap: 30px; }
  .about-opening { gap: 35px; grid-template-columns: 1.7fr .7fr; }
  .about-margin { padding-left: 20px; }
  .about-margin>span { font-size: 24px; }
  .about-records { gap: 40px; }
  .article-layout { grid-template-columns: minmax(0,1fr); gap: 37px; }
  .article-aside { position: static; padding: 23px 0 0; border: 0; border-top: 1px solid var(--line); }
  .article-aside nav { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; }
  .aside-note .text-link { margin-right: 22px; }
  .footer-brief { flex-wrap: wrap; gap: 20px 45px; }
  .footer-brief>.eyebrow { flex-basis: 100%; margin-left: 0; max-width: none; text-align: left; }
}
@media (max-width: 767px) {
  body { font-size: 15px; line-height: 1.8; }
  h1 { font-size: 35px; line-height: 1.4; letter-spacing: -.8px; }
  h2 { font-size: 27px; letter-spacing: -.5px; }
  h3 { font-size: 20px; }
  .shell,.reading-shell { width: calc(100% - 40px); }
  .eyebrow { font-size: 9px; letter-spacing: 1.5px; }
  .lead { font-size: 17px; }
  .header-inner { gap: 0 14px; padding-block: 15px; min-height: 70px; }
  .brand>span { font-size: 19px; }
  .brand small { font-size: 6px; letter-spacing: 1.1px; margin-top: 6px; }
  .brand img { width: 34px; height: 34px; }
  .header-download { padding: 8px 11px; font-size: 10px; gap: 8px; }
  .header-download span { font-size: 13px; }
  .menu-toggle { font-size: 11px; padding-left: 3px; }
  .menu-icon { width: 17px; margin-right: 7px; }
  #site-navigation.is-open { grid-template-columns: 1fr 1fr; }
  .home-page .download-btn:not(.hero-download) { display: none!important; }
  .device-lab-hero { display: flex; flex-direction: column; gap: 28px; padding-block: 31px 38px; }
  .hero-copy { order: 0; margin: 0; border: 0; padding: 0; }
  .hero-photograph { order: 1; width: 100%; }
  .hero-copy .eyebrow { gap: 15px; margin-bottom: 18px; }
  .hero-copy .eyebrow span { font-size: 8px; letter-spacing: 1px; }
  .hero-copy h1 { font-size: 37px; line-height: 1.27; letter-spacing: -1px; }
  .hero-intro { margin-top: 20px; font-size: 14px; line-height: 1.85; }
  .hero-actions { margin-top: 23px; flex-direction: row; align-items: center; gap: 20px; }
  .hero-actions .download-btn { padding: 12px 20px; gap: 26px; }
  .hero-actions .text-link { font-size: 12px; gap: 9px; }
  .hero-note { font-size: 10px; margin-top: 14px; }
  .hero-photograph img { height: auto; aspect-ratio: 1.72; }
  .hero-photograph figcaption { margin-top: 9px; padding-top: 9px; font-size: 10px; }
  .section-heading { margin-bottom: 25px; }
  .horizontal-heading { flex-direction: column; align-items: start; gap: 16px; }
  .horizontal-heading>p { max-width: none; font-size: 11px; }
  .connection-conditions { padding-block: 27px 40px; }
  .connection-conditions .section-heading { padding-top: 0; }
  .condition-columns { grid-template-columns: 1fr; gap: 28px; }
  .condition-lead { padding-right: 0; }
  .condition-lead .small-note { margin-top: 22px; max-width: none; padding-top: 13px; }
  .small-marker { margin-bottom: 18px; }
  .condition-middle { display: grid; grid-template-columns: 1fr; gap: 23px; }
  .condition-middle article+article { margin: 0; }
  .condition-middle article { border-top: 1px solid var(--line); padding-top: 20px; }
  .condition-right { grid-column: auto; grid-template-columns: 1fr; gap: 24px; }
  .condition-right article:last-child { width: 88%; margin-left: auto; border-top: 1px solid var(--line); padding-top: 21px; }
  .apk-source { padding-block: 39px 42px; }
  .apk-layout { grid-template-columns: 1fr; gap: 25px; }
  .apk-layout img { height: auto; aspect-ratio: 1.4; object-position: 50% 40%; }
  .apk-notes { padding-top: 0; }
  .apk-notes p { font-size: 14px; }
  .desktop-interface { padding-block: 43px 42px; }
  .desktop-panorama { width: 100%; }
  .desktop-panorama img { height: auto; aspect-ratio: 1.7; }
  .desktop-annotations { width: 100%; grid-template-columns: 1fr; gap: 25px; margin-top: 25px; }
  .desktop-annotations article:first-child { max-width: none; }
  .desktop-annotations article:last-child { border-top: 1px solid var(--line); padding-top: 21px; }
  .client-preparation { padding-block: 35px 39px; }
  .preparation-intro .lead { margin-top: 17px; }
  .preparation-body { grid-template-columns: 1fr; gap: 24px; margin-top: 24px; }
  .preparation-photo { width: 75%; margin-left: auto; }
  .preparation-photo img { height: auto; aspect-ratio: 1.6; }
  .short-notes { gap: 22px; }
  .inline-actions { gap: 17px; margin-top: 24px; }
  .free-information { padding-block: 33px 40px; }
  .free-layout { grid-template-columns: 1fr; gap: 24px; }
  .free-layout h2 { font-size: 27px; }
  .free-layout>div p { font-size: 14px; }
  .network-journal { padding-block: 30px 42px; }
  .network-layout { grid-template-columns: 1fr; gap: 26px; }
  .network-layout img { height: auto; aspect-ratio: 1.5; }
  .network-secondary { width: 90%; margin: 26px 0 0 auto; border-top: 1px solid var(--line); padding-top: 21px; }
  .network-reminder { display: flex; flex-direction: column; gap: 7px; margin-top: 22px; font-size: 11px; }
  .connection-check { padding-block: 38px 41px; }
  .symptom-table>div { grid-template-columns: 1fr; gap: 10px; padding-block: 20px; }
  .symptom-table .symptom-heading { display: none; }
  .symptom-table h3 { font-size: 18px; }
  .article-preview { padding-block: 39px; }
  .preview-layout { grid-template-columns: 1fr; gap: 28px; }
  .preview-feature { grid-row: auto; border-right: 0; padding: 0 0 25px; border-bottom: 1px solid var(--line); }
  .preview-feature h3 { margin-top: 15px; font-size: 25px; }
  .preview-photo img { height: auto; aspect-ratio: 2; }
  .preview-quiet { grid-column: auto; width: 88%; margin-left: auto; border-top: 1px solid var(--line); padding-top: 24px; padding-bottom: 0; }
  .preview-quiet h3 { font-size: 23px; }
  .device-questions { padding-block: 31px 43px; }
  .faq-layout { grid-template-columns: 1fr; gap: 0; margin-top: 17px; }
  .faq-record { grid-column: auto; padding-block: 23px; }
  .faq-record h3 { font-size: 18px; }
  .breadcrumbs { padding-top: 21px; font-size: 10px; }
  .page-heading { padding-block: 27px 30px; }
  .page-heading h1 { margin-bottom: 19px; }
  .page-heading .lead { font-size: 16px; }
  .page-panorama img,.pc-panorama img,.about-photograph img,.article-cover img { height: auto; aspect-ratio: 1.5; }
  .download-record { grid-template-columns: 1fr; gap: 26px; padding-block: 31px 38px; }
  .download-intro h2 { margin-bottom: 19px; }
  .margin-record { padding: 20px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .margin-record>p { font-size: 15px; line-height: 1.9; margin-bottom: 19px; }
  .download-preflight { padding-block: 30px 35px; }
  .uneven-columns { grid-template-columns: 1fr; gap: 25px; }
  .uneven-columns>article:last-child { grid-column: auto; }
  .uneven-columns>article+article { border-top: 1px solid var(--line); padding-top: 23px; }
  .plain-checks { padding-block: 31px 37px; }
  .check-copy { grid-template-columns: 1fr; gap: 24px; }
  .check-copy article:last-child:nth-child(3) { grid-column: auto; }
  .related-reading { padding-block: 29px 37px; }
  .related-reading h2 { font-size: 23px; }
  .related-reading>div { flex-direction: column; align-items: start; gap: 18px; }
  .related-reading .text-link { font-size: 12px; gap: 16px; }
  .android-observation { grid-template-columns: 1fr; gap: 21px; padding-bottom: 30px; }
  .android-closeup img { height: auto; aspect-ratio: 1.35; }
  .android-margin { display: flex; gap: 24px; align-items: start; }
  .android-margin .index-label { max-width: 90px; font-size: 8px; }
  .android-margin p { font-size: 14px; line-height: 1.7; margin: 0; }
  .android-margin .small-marker { margin-left: auto; margin-top: 4px; width: 18px; }
  .source-checklist { padding-block: 18px 34px; }
  .observation-list>div { grid-template-columns: 1fr; gap: 10px; padding-block: 21px; }
  .observation-list dt { font-size: 18px; }
  .observation-list dd { font-size: 14px; }
  .android-after { padding-block: 34px; }
  .desktop-preflight { padding-block: 29px 37px; }
  .desktop-preflight h2 { font-size: 25px; }
  .interface-change { padding-block: 30px 37px; }
  .chapter-navigation { gap: 0 21px; padding-block: 7px; }
  .chapter-navigation a { font-size: 12px; gap: 10px; padding-block: 10px; }
  .guide-devices { grid-template-columns: 1fr; gap: 25px; padding-block: 32px 40px; }
  .guide-devices>figure img,.guide-mobile>figure img { height: auto; aspect-ratio: 1.5; }
  .device-notes { grid-column: auto; grid-template-columns: 1fr; gap: 24px; }
  .remote-record { grid-column: auto; grid-template-columns: 1fr; gap: 18px; margin: 0; }
  .remote-record figure { width: 78%; margin-left: auto; }
  .remote-record img { height: auto; aspect-ratio: 1.7; }
  .remote-record>p { font-size: 12px; }
  .guide-home { padding-block: 35px 40px; }
  .home-network-photo { width: 100%; margin-bottom: 25px; }
  .home-network-photo img { height: auto; aspect-ratio: 1.5; }
  .guide-wired { padding-block: 37px; gap: 25px; }
  .guide-wired figure { width: 100%; margin: 0; }
  .guide-wired img { height: auto; aspect-ratio: 1.45; }
  .guide-mobile { grid-template-columns: 1fr; gap: 24px; padding-block: 23px 38px; }
  .mobile-notes { grid-column: auto; grid-template-columns: 1fr; gap: 24px; }
  .guide-public { padding-block: 34px 40px; }
  .public-layout { grid-template-columns: 1fr; gap: 25px; margin-top: 24px; }
  .public-layout img { height: auto; aspect-ratio: 1.5; }
  .guide-page .free-information { padding-block: 37px; }
  .guide-connection { padding-block: 30px 38px; }
  .review-layout { grid-template-columns: 1fr; gap: 27px; }
  .review-layout figure { width: 85%; margin-left: auto; }
  .review-layout img { height: auto; aspect-ratio: 1.6; }
  .guide-issues { padding-block: 32px 40px; }
  .open-question-list article { grid-template-columns: 1fr; gap: 12px; padding-block: 22px; }
  .notebook-directory { padding-block: 29px 38px; }
  .notebook-directory>div>a { grid-template-columns: 1fr 25px; gap: 8px 15px; padding-block: 20px; }
  .notebook-directory span { grid-column: 1/-1; }
  .notebook-directory strong { font-size: 16px; }
  .about-opening { grid-template-columns: 1fr; gap: 28px; padding-block: 28px 36px; }
  .about-opening .lead { margin-top: 22px; font-size: 17px; }
  .about-margin { border-left: 0; border-top: 1px solid var(--line); padding: 18px 0 0; display: flex; flex-wrap: wrap; gap: 9px 20px; }
  .about-margin>span { font-size: 16px; }
  .about-margin p { flex-basis: 100%; margin-top: 5px; font-size: 11px; }
  .about-records { grid-template-columns: 1fr; gap: 29px; padding-block: 35px; }
  .about-records h2 { font-size: 25px; }
  .article-heading h1 { font-size: 30px; line-height: 1.45; letter-spacing: -.5px; }
  .article-heading .lead { font-size: 15px; }
  .article-cover figcaption { font-size: 10px; }
  .article-cover { width: calc(100% - 40px); }
  .article-layout { padding-block: 29px 38px; gap: 30px; }
  .article-body { font-size: 16px; line-height: 1.9; }
  .article-body h2 { font-size: 24px; margin-bottom: 19px; }
  .article-body section+section { margin-top: 29px; }
  .article-aside nav { grid-template-columns: 1fr; }
  .article-note { padding: 14px 17px; font-size: 14px; }
  table { font-size: 13px; }
  th,td { padding: 12px 10px 12px 0; }
  .site-footer { padding-block: 29px 23px; }
  .footer-brief { flex-direction: column; align-items: start; gap: 20px; padding-bottom: 24px; }
  .footer-brief .brand>span { font-size: 20px; }
  .footer-brief>p { font-size: 12px; }
  .footer-brief>.eyebrow { flex-basis: auto; font-size: 8px; margin-top: 0; }
  .footer-index { grid-template-columns: 1fr; gap: 24px; padding-block: 24px; }
  .footer-links { gap: 11px 23px; }
  .footer-links a { font-size: 11px; }
  .footer-legal { font-size: 9px; }
  .footer-legal>div { flex-direction: column; align-items: center; gap: 5px; }
  .friend-links { font-size: 10px; gap: 18px; }
  .transition-sheet h1 { font-size: 29px; }
}
@media (max-width: 389px) {
  .header-inner { gap: 0 12px; }
  .header-download { gap: 7px; padding-inline: 9px; }
  .brand>span { font-size: 18px; }
  .brand small { font-size: 5.5px; }
  .hero-copy h1 { font-size: 35px; }
  .hero-actions { gap: 17px; }
  .hero-actions .download-btn { padding-inline: 17px; gap: 21px; }
  .short-notes { grid-template-columns: 1fr; gap: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { animation-duration: .01ms!important; transition-duration: .01ms!important; }
}