:root {
  --night: #03050b;
  --panel: #080d17;
  --panel-2: #0c1320;
  --line: rgba(160, 180, 214, .18);
  --text: #edf5ff;
  --muted: #8491a8;
  --cyan: #36f5d4;
  --violet: #9f71ff;
  --magenta: #ff4fc7;
  --warning: #f7d65b;
  --radius: 4px;
  --display: "Arial Narrow", "Microsoft YaHei UI", sans-serif;
  --body: "Microsoft YaHei", "PingFang SC", sans-serif;
  --mono: Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; color: var(--text); background: var(--night); font-family: var(--body); line-height: 1.7; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none; background: radial-gradient(circle at 75% 12%, rgba(159,113,255,.11), transparent 28%), radial-gradient(circle at 8% 50%, rgba(54,245,212,.05), transparent 25%); }
body::after { content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .16; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(to bottom, #000, transparent 80%); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 999; left: 16px; top: -60px; background: var(--cyan); color: #00100d; padding: 10px 16px; font-weight: 800; transition: top .2s; }
.skip-link:focus { top: 16px; }
.section-shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.kicker { margin: 0 0 14px; color: var(--cyan); font: 700 11px/1.2 var(--mono); letter-spacing: .2em; text-transform: uppercase; }
.section-heading h2, .feature-intro h2, .news-title h2, .partner-copy h2, .faq-aside h2, .flow-heading h2, .verify-panel h2, .download-support h2, .diagnostic-title h2, .catalog-nav h2 {
  margin: 0; font: 800 clamp(38px, 5vw, 68px)/1.03 var(--display); letter-spacing: -.055em;
}
.section-heading > p, .news-title > p, .feature-intro > p, .diagnostic-title > p { color: var(--muted); max-width: 560px; }
.split-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 42px; }
.centered-heading { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.centered-heading > p { margin-inline: auto; }

.site-header { position: sticky; z-index: 100; top: 0; min-height: 74px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; padding: 0 max(24px, calc((100vw - 1400px)/2)); background: rgba(3,5,11,.88); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; gap: 10px; font: 800 17px/1 var(--display); letter-spacing: -.03em; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 31px; height: 31px; color: #03110f; background: var(--cyan); clip-path: polygon(0 0, 80% 0, 100% 20%, 100% 100%, 20% 100%, 0 80%); font: 900 18px/1 var(--mono); box-shadow: 0 0 30px rgba(54,245,212,.5); }
.site-nav { display: flex; justify-content: center; align-items: center; gap: clamp(12px, 1.4vw, 25px); }
.site-nav a { position: relative; padding: 26px 0 23px; color: #a6b2c6; font-size: 13px; white-space: nowrap; }
.site-nav a:hover, .site-nav a.active { color: var(--text); }
.site-nav a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.header-cta { padding: 10px 17px; color: var(--cyan); border: 1px solid var(--cyan); font-size: 13px; font-weight: 700; white-space: nowrap; transition: .2s; }
.header-cta:hover { color: #00110e; background: var(--cyan); box-shadow: 0 0 24px rgba(54,245,212,.35); }
.nav-toggle { display: none; }

.hero { position: relative; min-height: calc(100vh - 74px); display: grid; grid-template-columns: minmax(0, .92fr) minmax(380px, 1.08fr) 38px; align-items: center; gap: clamp(28px, 5vw, 86px); padding: 70px max(24px, calc((100vw - 1320px)/2)); overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before { content: "K / LINK"; position: absolute; left: -18px; top: 8%; color: rgba(255,255,255,.022); font: 900 clamp(120px, 22vw, 330px)/1 var(--display); letter-spacing: -.1em; white-space: nowrap; pointer-events: none; }
.hero-copy { position: relative; z-index: 2; }
.signal-label { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 30px; padding: 6px 10px; border: 1px solid rgba(54,245,212,.3); color: #9dcfc6; background: rgba(54,245,212,.04); font: 11px/1 var(--mono); letter-spacing: .08em; }
.signal-label i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: pulse 2s infinite; }
.hero h1, .download-hero h1, .help-hero h1 { margin: 0; font: 900 clamp(58px, 7.2vw, 108px)/.91 var(--display); letter-spacing: -.075em; }
.hero h1 em, .download-hero h1 em, .help-hero h1 em { color: transparent; -webkit-text-stroke: 1px var(--violet); font-style: normal; text-shadow: 0 0 30px rgba(159,113,255,.25); }
.hero-lead { margin: 28px 0; max-width: 630px; color: #aeb9ca; font-size: 16px; }
.hero-actions { display: flex; align-items: center; gap: 26px; }
.primary-action { display: inline-flex; align-items: center; justify-content: space-between; min-width: 210px; padding: 14px 18px; color: #00130f; background: var(--cyan); font-weight: 800; box-shadow: 6px 6px 0 rgba(159,113,255,.38); white-space: nowrap; }
.primary-action span { font: 20px/1 var(--mono); }
.text-action, .inline-link { color: #c8d3e5; font-size: 14px; border-bottom: 1px solid var(--line); }
.hero-proof { display: flex; gap: 22px; margin-top: 36px; color: #79869a; font: 10px/1.3 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.hero-proof span::before { content: "◇"; margin-right: 7px; color: var(--cyan); }
.hero-media { position: relative; align-self: center; min-width: 0; height: auto; padding: 0; margin: 0; }
.hero-media::before { content: ""; position: absolute; inset: 12% 8%; z-index: -1; background: linear-gradient(135deg, rgba(54,245,212,.18), rgba(159,113,255,.18)); filter: blur(42px); }
.media-terminal { position: absolute; z-index: 3; right: -20px; top: -26px; width: 164px; padding: 12px; border: 1px solid rgba(54,245,212,.5); background: rgba(3,8,14,.92); box-shadow: 0 0 30px rgba(54,245,212,.12); }
.media-terminal > span, .media-terminal small { display: block; color: var(--muted); font: 9px/1.4 var(--mono); letter-spacing: .1em; }
.media-terminal strong { display: block; color: var(--cyan); font: 700 45px/1 var(--mono); }
.media-terminal strong span { font-size: 12px; }
.orbit-tag { position: absolute; z-index: 3; padding: 7px 10px; color: #dacbff; border: 1px solid rgba(159,113,255,.5); background: #070a12; font: 10px/1 var(--mono); }
.tag-a { left: -18px; bottom: 18%; }.tag-b { right: 5%; bottom: -15px; }
.hero-rail { align-self: stretch; display: flex; flex-direction: column; justify-content: end; align-items: center; gap: 16px; padding-bottom: 30px; }
.hero-rail span { writing-mode: vertical-rl; color: #596579; font: 9px/1 var(--mono); letter-spacing: .16em; }
.hero-rail i { width: 1px; height: 60px; background: linear-gradient(var(--cyan), transparent); }

.download-zone { padding-block: 130px; }
.download-matrix { display: grid; grid-template-columns: 1.25fr .75fr; border-top: 1px solid var(--line); }
.download-card { position: relative; min-height: 190px; display: grid; grid-template-columns: 82px 1fr auto; align-items: center; gap: 24px; padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .25s; }
.download-card:nth-child(even) { border-right: 0; }
.download-card:hover { background: rgba(54,245,212,.035); }
.platform-code { display: grid; place-items: center; height: 72px; color: var(--cyan); border: 1px solid rgba(54,245,212,.35); font: 700 18px/1 var(--mono); }
.download-card small { color: var(--violet); font: 10px/1 var(--mono); letter-spacing: .1em; }
.download-card h3 { margin: 7px 0 3px; font: 800 25px/1 var(--display); }
.download-card p { margin: 0; color: var(--muted); font-size: 13px; }
.download-card a, .price-card > a, .device-card > a { display: inline-flex; justify-content: center; min-width: 128px; padding: 11px 14px; border: 1px solid #506078; font-size: 13px; font-weight: 700; white-space: nowrap; word-break: keep-all; writing-mode: horizontal-tb; }
.download-card a:hover, .device-card > a:hover { color: var(--cyan); border-color: var(--cyan); }
.inline-link { display: table; margin: 30px 0 0 auto; padding-bottom: 5px; }

.feature-deck { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; padding-block: 110px 140px; }
.feature-intro { position: sticky; top: 120px; align-self: start; }
.feature-intro > p { margin: 22px 0 32px; }
.feature-intro img { display: block; width: 100%; height: auto; filter: saturate(.8) contrast(1.08); border-left: 2px solid var(--violet); }
.feature-list { border-top: 1px solid var(--line); }
.feature-list article { display: grid; grid-template-columns: 74px 1fr; gap: 28px; padding: 29px 14px; border-bottom: 1px solid var(--line); }
.feature-list article > span { color: var(--cyan); font: 11px/1 var(--mono); }
.feature-list h3 { margin: 0 0 7px; font: 800 25px/1 var(--display); }
.feature-list p { margin: 0; color: var(--muted); }

.pricing { padding-block: 130px; }
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); align-items: stretch; gap: 12px; }
.price-card { position: relative; padding: 34px; background: rgba(8,13,23,.76); border: 1px solid var(--line); }
.price-card.recommended { translate: 0 -18px; border-color: rgba(54,245,212,.65); background: linear-gradient(180deg, rgba(54,245,212,.09), rgba(8,13,23,.92) 35%); }
.recommend-label { position: absolute; right: 0; top: 0; padding: 5px 11px; color: #00120e; background: var(--cyan); font: 700 10px/1.5 var(--mono); }
.price-top > span { color: var(--violet); font: 10px/1 var(--mono); letter-spacing: .15em; }
.price-top h3 { margin: 16px 0 3px; font: 800 25px/1 var(--display); }
.price-top p { margin: 0; color: var(--muted); font-size: 13px; }
.price { margin: 30px 0 24px; font: 800 60px/1 var(--display); }
.price small { color: var(--cyan); font-size: 18px; vertical-align: top; }
.price em { color: var(--muted); font: 12px/1 var(--body); }
.price-card ul { min-height: 130px; margin: 0 0 25px; padding: 0; list-style: none; color: #aeb8c8; }
.price-card li { padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,.05); font-size: 13px; }
.price-card li::before { content: "✓"; margin-right: 9px; color: var(--cyan); }
.price-card > a { width: 100%; color: #00120f; background: var(--cyan); border-color: var(--cyan); }

.data-band { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); background: #070a12; }
.data-band > div { padding: 48px max(25px, 4vw); border-right: 1px solid var(--line); }
.data-band > div:last-child { border: 0; }
.data-band strong { display: block; color: var(--text); font: 800 clamp(40px, 5vw, 70px)/1 var(--display); letter-spacing: -.05em; }
.data-band strong small { color: var(--cyan); font-size: .42em; }
.data-band span { color: var(--muted); font-size: 12px; }

.newsroom { display: grid; grid-template-columns: .58fr 1fr; gap: 28px 70px; padding-block: 140px; }
.news-title { grid-row: span 2; }
.lead-story { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); }
.lead-story img { display: block; width: 100%; height: 100%; object-fit: cover; filter: saturate(.7); }
.lead-story > div { padding: 26px; }
.lead-story time, .news-list time { color: var(--cyan); font: 10px/1 var(--mono); }
.lead-story h3 { margin: 15px 0 10px; font: 800 23px/1.15 var(--display); }
.lead-story p { color: var(--muted); font-size: 13px; }
.lead-story a { color: var(--cyan); font-size: 13px; }
.news-list { border-top: 1px solid var(--line); }
.news-list a { display: grid; grid-template-columns: 55px 1fr auto; align-items: center; gap: 18px; padding: 19px 4px; border-bottom: 1px solid var(--line); font-size: 14px; }
.news-list i { color: var(--violet); font-style: normal; }

.partner-panel { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; padding: 70px; border: 1px solid rgba(159,113,255,.35); background: linear-gradient(120deg, rgba(159,113,255,.11), transparent 45%), #070a12; }
.partner-copy p:not(.kicker) { max-width: 510px; color: var(--muted); margin: 24px 0 30px; }
.partner-metrics { display: grid; grid-template-columns: repeat(2, 1fr); }
.partner-metrics > div { padding: 30px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.partner-metrics strong { display: block; font: 800 50px/1 var(--display); }
.partner-metrics strong small { color: var(--magenta); font-size: .45em; }
.partner-metrics span { color: var(--muted); font-size: 12px; }

.faq { display: grid; grid-template-columns: .65fr 1.35fr; gap: 90px; padding-block: 150px; }
.faq-aside p { color: var(--muted); }
.faq-aside a { color: var(--cyan); }
.accordion { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { display: flex; justify-content: space-between; gap: 20px; padding: 22px 4px; cursor: pointer; list-style: none; font-weight: 700; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--cyan); font: 20px/1 var(--mono); transition: transform .2s; }
details[open] summary span { transform: rotate(45deg); }
details > p { margin: 0; padding: 0 50px 24px 4px; color: var(--muted); font-size: 14px; }
.contact-strip { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 50px; padding: 55px max(24px, calc((100vw - 1180px)/2)); color: #00130e; background: var(--cyan); }
.contact-strip span { font: 700 10px/1 var(--mono); letter-spacing: .1em; }
.contact-strip h2 { margin: 4px 0 0; font: 900 clamp(26px, 3vw, 43px)/1 var(--display); letter-spacing: -.04em; }
.contact-strip p { max-width: 480px; line-height: 1.5; }
.contact-strip > a { padding: 12px 20px; border: 1px solid #00130e; font-weight: 800; white-space: nowrap; }

.site-footer { border-top: 1px solid var(--line); background: #020409; }
.footer-main { width: min(1180px, calc(100% - 48px)); margin: auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 70px; padding-block: 72px; }
.footer-brand p { max-width: 280px; color: var(--muted); font-size: 13px; }
.footer-main h3 { margin: 0 0 17px; color: #68758a; font: 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.footer-main > div:not(.footer-brand) a { display: block; margin: 10px 0; color: #a7b2c3; font-size: 13px; }
.footer-main a:hover { color: var(--cyan); }
.footer-bottom { width: min(1180px, calc(100% - 48px)); margin: auto; display: flex; justify-content: space-between; gap: 22px; padding: 22px 0 35px; border-top: 1px solid var(--line); color: #647086; font-size: 11px; }

/* Download page */
.download-hero { min-height: 690px; display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 50px; padding: 90px max(24px, calc((100vw - 1180px)/2)); border-bottom: 1px solid var(--line); }
.download-hero-copy > p:not(.kicker) { max-width: 540px; color: var(--muted); }
.release-line { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; max-width: 520px; margin-top: 35px; padding: 13px; border: 1px solid var(--line); font: 10px/1 var(--mono); }
.release-line span { color: var(--muted); }.release-line strong { color: var(--cyan); }.release-line i { color: #8ca092; font-style: normal; }
.download-hero-media { align-self: center; height: auto; padding: 0; margin: 0; }
.download-hero-media img { display: block; width: 100%; height: auto; object-fit: contain; }
.device-selector { padding-block: 120px; }
.device-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.device-card { grid-column: span 3; display: flex; flex-direction: column; min-height: 385px; padding: 28px; border: 1px solid var(--line); background: rgba(8,13,23,.7); }
.device-card.device-wide { grid-column: span 4; }.device-card:nth-child(2) { grid-column: span 2; }.device-card:nth-child(3) { grid-column: span 2; }.device-card.mobile-wide { grid-column: span 4; }
.device-index { padding-bottom: 20px; border-bottom: 1px solid var(--line); color: var(--violet); font: 10px/1 var(--mono); }
.device-name { display: flex; align-items: center; gap: 20px; margin: 26px 0 15px; }
.device-name > span { display: grid; place-items: center; width: 65px; height: 65px; border: 1px solid rgba(54,245,212,.4); color: var(--cyan); font: 700 16px/1 var(--mono); }
.device-name h2 { margin: 0; font: 800 30px/1 var(--display); }.device-name p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
.device-card ul { flex: 1; margin: 10px 0 25px; padding: 0; list-style: none; color: #aab6c8; font-size: 13px; }
.device-card li { margin: 7px 0; }.device-card li::before { content: "—"; margin-right: 8px; color: var(--cyan); }
.device-card > a { align-self: flex-start; min-width: 190px; }
.install-flow { display: grid; grid-template-columns: .6fr 1.4fr; gap: 80px; padding-block: 100px 130px; }
.install-flow ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.install-flow li { display: grid; grid-template-columns: 80px 1fr; padding: 25px 10px; border-bottom: 1px solid var(--line); }
.install-flow li > span { color: var(--cyan); font: 12px/1 var(--mono); }
.install-flow h3 { margin: 0; font: 800 23px/1 var(--display); }.install-flow p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.verify-panel { display: grid; grid-template-columns: .6fr 1.4fr; gap: 70px; padding-block: 65px; border-block: 1px solid var(--line); }
.verify-items { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.verify-items p { margin: 0; padding: 15px; background: var(--panel); font-size: 13px; }.verify-items span { margin-right: 8px; color: var(--cyan); }
.download-support { display: flex; justify-content: space-between; align-items: end; gap: 40px; padding-block: 120px; }
.download-support p:not(.kicker) { color: var(--muted); }

/* Help page */
.help-hero { min-height: 640px; display: grid; grid-template-columns: .85fr 1.15fr; grid-template-rows: auto auto; align-items: center; gap: 30px 70px; padding: 80px max(24px, calc((100vw - 1180px)/2)); border-bottom: 1px solid var(--line); }
.help-hero-heading { align-self: end; }
.help-search { align-self: end; padding: 28px; border: 1px solid rgba(54,245,212,.35); background: rgba(8,13,23,.85); }
.help-search label { display: block; margin-bottom: 11px; color: #9cabbf; font-size: 12px; }
.help-search > div { display: grid; grid-template-columns: 1fr auto; }
.help-search input { min-width: 0; padding: 15px; color: var(--text); background: #050913; border: 1px solid var(--line); outline: 0; }
.help-search input:focus { border-color: var(--cyan); }
.help-search button { padding: 0 22px; color: #00130f; background: var(--cyan); border: 0; font-weight: 800; cursor: pointer; }
.help-search p { margin: 15px 0 0; color: var(--muted); font-size: 11px; }.help-search p a { margin-left: 14px; color: var(--cyan); }
.help-hero-media { grid-column: 2; align-self: center; height: auto; padding: 0; margin: 0; }
.help-hero-media img { display: block; width: 100%; height: auto; object-fit: contain; }
.diagnostic { display: grid; grid-template-columns: .55fr 1.45fr; gap: 70px; padding-block: 120px; }
.diagnostic-path { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.diagnostic-path article { min-height: 210px; padding: 26px; border: 1px solid var(--line); background: var(--panel); }
.diagnostic-path span { color: var(--cyan); font: 10px/1 var(--mono); }.diagnostic-path h3 { margin: 22px 0 10px; font: 800 22px/1 var(--display); }.diagnostic-path p { margin: 0; color: var(--muted); font-size: 13px; }
.diagnostic-action { grid-column: 2; display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 18px 24px; border: 1px solid rgba(159,113,255,.45); }
.diagnostic-action p { margin: 0; color: #9da9ba; font-size: 13px; }.diagnostic-action a { color: var(--violet); font-weight: 700; white-space: nowrap; }
.help-catalog { display: grid; grid-template-columns: 330px 1fr; gap: 80px; padding-block: 130px; }
.catalog-nav { position: sticky; top: 110px; align-self: start; }
.catalog-nav > a { display: flex; justify-content: space-between; padding: 14px 3px; border-bottom: 1px solid var(--line); color: #aeb9ca; font-size: 13px; }
.catalog-nav > a:first-of-type { margin-top: 30px; border-top: 1px solid var(--line); }.catalog-nav > a span { color: var(--cyan); font: 10px/1.8 var(--mono); }
.catalog-content > section { padding: 0 0 80px; scroll-margin-top: 100px; }
.catalog-tag { color: var(--violet); font: 10px/1 var(--mono); letter-spacing: .15em; }
.catalog-content h3 { margin: 12px 0 24px; font: 800 35px/1 var(--display); }
.privacy-note { margin-top: 20px; padding: 22px; border-left: 2px solid var(--cyan); background: var(--panel); }.privacy-note h4 { margin: 0; }.privacy-note p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
.support-console { display: flex; align-items: center; justify-content: space-between; gap: 50px; margin-bottom: 120px; padding: 55px; border: 1px solid rgba(54,245,212,.45); background: linear-gradient(105deg, rgba(54,245,212,.08), transparent); }
.support-console span { color: var(--cyan); font: 10px/1 var(--mono); }.support-console h2 { margin: 10px 0; font: 800 40px/1 var(--display); }.support-console p { color: var(--muted); }
.support-actions { display: flex; gap: 10px; }.support-actions a { min-width: 140px; padding: 12px 18px; text-align: center; border: 1px solid var(--line); white-space: nowrap; }.support-actions a:first-child { color: #00130f; background: var(--cyan); border-color: var(--cyan); }

@keyframes pulse { 50% { opacity: .35; box-shadow: 0 0 3px var(--cyan); } }

@media (max-width: 1120px) {
  .site-header { grid-template-columns: auto auto 1fr; }
  .nav-toggle { justify-self: end; display: flex; flex-direction: column; gap: 4px; width: 42px; padding: 8px; color: var(--text); background: none; border: 1px solid var(--line); cursor: pointer; }
  .nav-toggle span { width: 100%; height: 1px; background: currentColor; }.nav-toggle b { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
  .site-nav { position: absolute; left: 0; right: 0; top: 74px; display: none; grid-template-columns: repeat(2, 1fr); padding: 16px 24px 25px; background: rgba(3,5,11,.98); border-bottom: 1px solid var(--line); }
  .site-nav.open { display: grid; }.site-nav a { padding: 11px; border-bottom: 1px solid rgba(255,255,255,.05); }.site-nav a.active::after { display: none; }
  .header-cta { justify-self: end; }
  .hero { grid-template-columns: .95fr 1.05fr; }.hero-rail { display: none; }
  .download-card { grid-template-columns: 64px 1fr; }.download-card a { grid-column: 2; justify-self: start; }
  .newsroom { grid-template-columns: 1fr; }.news-title { grid-row: auto; }
}

@media (max-width: 820px) {
  .section-shell { width: min(100% - 30px, 620px); }
  .site-header { gap: 12px; padding-inline: 15px; }.header-cta { display: none; }
  .hero, .download-hero { min-height: auto; grid-template-columns: 1fr; padding-block: 70px; }
  .hero h1, .download-hero h1, .help-hero h1 { font-size: clamp(51px, 14vw, 80px); }
  .hero-media, .download-hero-media { margin-top: 35px; }.media-terminal { right: 0; }
  .hero-proof { flex-wrap: wrap; }
  .split-heading { align-items: start; flex-direction: column; gap: 10px; }
  .download-zone, .pricing, .newsroom { padding-block: 90px; }
  .download-matrix { grid-template-columns: 1fr; }
  .download-card, .download-card:nth-child(even) { border-right: 0; }
  .feature-deck, .faq, .install-flow, .verify-panel, .diagnostic, .help-catalog { grid-template-columns: 1fr; gap: 50px; padding-block: 90px; }
  .feature-intro, .catalog-nav { position: static; }
  .price-grid { grid-template-columns: 1fr; }.price-card.recommended { translate: none; }
  .data-band { grid-template-columns: 1fr 1fr; }.data-band > div:nth-child(2) { border-right: 0; }.data-band > div { border-bottom: 1px solid var(--line); }
  .partner-panel { width: calc(100% - 30px); grid-template-columns: 1fr; gap: 45px; padding: 35px 25px; }
  .contact-strip { grid-template-columns: 1fr; gap: 12px; }.contact-strip > a { justify-self: start; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 40px; }.footer-brand { grid-column: 1/-1; }
  .footer-bottom { flex-direction: column; }
  .device-grid { grid-template-columns: 1fr; }
  .device-card, .device-card.device-wide, .device-card:nth-child(2), .device-card:nth-child(3), .device-card.mobile-wide { grid-column: auto; }
  .verify-items { grid-template-columns: 1fr; }
  .download-support, .support-console { align-items: start; flex-direction: column; }
  .help-hero { min-height: auto; grid-template-columns: 1fr; grid-template-rows: auto; padding-block: 70px; }
  .help-hero-heading, .help-search { align-self: auto; }.help-hero-media { grid-column: auto; }
  .diagnostic-action { grid-column: auto; }
}

@media (max-width: 540px) {
  html { scroll-padding-top: 68px; }.site-header { min-height: 66px; }.site-nav { top: 66px; }
  .brand > span:last-child { font-size: 15px; }
  .hero { padding-inline: 18px; }.hero-actions { align-items: stretch; flex-direction: column; }.primary-action { width: 100%; }
  .hero-proof { gap: 12px; flex-direction: column; }
  .media-terminal { position: relative; top: 0; right: 0; margin: 0 0 10px auto; }
  .orbit-tag { display: none; }
  .download-card { grid-template-columns: 54px 1fr; gap: 15px; padding: 21px 10px; }
  .download-card a { grid-column: 1 / -1; width: 100%; min-width: 0; }
  .platform-code { height: 54px; font-size: 13px; }
  .data-band { grid-template-columns: 1fr; }.data-band > div { border-right: 0; }
  .lead-story { grid-template-columns: 1fr; }.lead-story img { height: auto; object-fit: contain; }
  .partner-metrics { grid-template-columns: 1fr; }.partner-metrics > div { border-left: 0; }
  .footer-main { grid-template-columns: 1fr; }.footer-brand { grid-column: auto; }
  .release-line { grid-template-columns: 1fr; }
  .device-card { min-height: 0; }.device-card > a { width: 100%; min-width: 0; }
  .diagnostic-path { grid-template-columns: 1fr; }.diagnostic-action { align-items: start; flex-direction: column; }
  .help-search > div { grid-template-columns: 1fr; }.help-search button { padding: 12px; }
  .support-actions { width: 100%; flex-direction: column; }.support-actions a { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Hero media safety override */
.hero { align-items: center; }
.hero-media, .download-hero-media, .help-hero-media { align-self: center; height: auto; padding: 0; margin-block: 0; overflow: visible; transform: none; clip-path: none; }
.hero-media img, .download-hero-media img, .help-hero-media img { display: block; width: 100%; height: auto; min-height: 0; max-height: none; margin: 0; padding: 0; object-fit: contain; object-position: center; transform: none; clip-path: none; }

/* Download text safety override */
.download-card a, .device-card > a, .price-card > a, .header-cta, .primary-action {
  display: inline-flex; flex-direction: row; align-items: center; justify-content: center; min-width: 128px; white-space: nowrap; word-break: keep-all; writing-mode: horizontal-tb;
}
@media (max-width: 540px) {
  .download-matrix, .device-grid, .price-grid { grid-template-columns: minmax(0, 1fr); }
  .download-card, .device-card, .price-card { min-width: 0; }
}