:root {
  --ink: #06131f;
  --deep: #081f33;
  --panel: #0d2c43;
  --cyan: #66e6e1;
  --cyan-soft: #baf7f2;
  --gold: #f3c76a;
  --paper: #edf8f7;
  --mist: #a9c6cd;
  --line: rgba(158, 226, 228, .2);
  --max: 1240px;
  --radius: 28px;
  --display: "Arial Narrow", "Microsoft YaHei UI", sans-serif;
  --body: "Microsoft YaHei", "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; color: var(--paper); background: var(--ink); font-family: var(--body); line-height: 1.7; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: -2; background: radial-gradient(circle at 78% 12%, rgba(26, 106, 135, .28), transparent 31%), radial-gradient(circle at 18% 62%, rgba(20, 87, 92, .2), transparent 27%), #06131f; }
body::after { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: -1; opacity: .14; background-image: linear-gradient(rgba(172, 235, 234, .2) 1px, transparent 1px), linear-gradient(90deg, rgba(172, 235, 234, .15) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(to bottom, #000, transparent 70%); }
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, a, input, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }
.sr-only, .skip-link { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link:focus { position: fixed; z-index: 1000; left: 16px; top: 16px; width: auto; height: auto; margin: 0; clip: auto; padding: 10px 18px; color: var(--ink); background: var(--gold); border-radius: 8px; }

.site-header { width: min(calc(100% - 32px), 1460px); min-height: 76px; margin: 14px auto 0; padding: 0 16px 0 24px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; position: sticky; top: 12px; z-index: 100; border: 1px solid var(--line); border-radius: 18px; background: rgba(6, 19, 31, .88); box-shadow: 0 18px 60px rgba(0, 0, 0, .26); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 11px; color: #fff; font-size: 19px; font-weight: 800; letter-spacing: .03em; white-space: nowrap; }
.brand-mark { width: 30px; height: 30px; display: inline-block; position: relative; border: 2px solid var(--cyan); border-radius: 50%; box-shadow: inset 0 0 0 6px rgba(102, 230, 225, .08); }
.brand-mark::before { content: ""; position: absolute; width: 12px; height: 12px; right: -5px; top: -3px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 16px rgba(243, 199, 106, .7); }
.brand-mark::after { content: ""; position: absolute; width: 38px; height: 12px; left: -6px; top: 7px; border: 1px solid rgba(102, 230, 225, .8); border-radius: 50%; transform: rotate(-24deg); }
.site-nav { display: flex; justify-content: center; align-items: center; gap: clamp(12px, 1.25vw, 24px); }
.site-nav a { position: relative; color: #bdd1d6; font-size: 13px; white-space: nowrap; transition: color .25s ease; }
.site-nav a::after { content: ""; position: absolute; left: 50%; bottom: -12px; width: 4px; height: 4px; border-radius: 50%; background: var(--cyan); transform: translateX(-50%) scale(0); transition: transform .25s ease; }
.site-nav a:hover, .site-nav a.is-active { color: #fff; }
.site-nav a:hover::after, .site-nav a.is-active::after { transform: translateX(-50%) scale(1); }
.header-cta { display: inline-flex; min-width: 108px; min-height: 44px; align-items: center; justify-content: center; padding: 8px 18px; color: var(--ink); background: var(--cyan); border-radius: 12px; font-weight: 800; font-size: 14px; white-space: nowrap; transition: transform .25s ease, background .25s ease; }
.header-cta:hover { transform: translateY(-2px); background: #91f5ef; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); color: #fff; background: transparent; border-radius: 10px; }
.nav-toggle > span:not(.sr-only) { display: block; width: 20px; height: 2px; margin: 4px auto; background: currentColor; transition: transform .2s ease, opacity .2s ease; }

.hero { width: min(calc(100% - 48px), var(--max)); min-height: calc(100vh - 104px); margin: 0 auto; padding: 86px 0 70px; display: grid; grid-template-columns: minmax(0, .88fr) minmax(440px, 1.12fr) 34px; align-items: center; gap: 44px; position: relative; }
.hero-copy { position: relative; z-index: 2; }
.signal-label, .eyebrow { margin: 0 0 20px; color: var(--cyan); font-family: Consolas, monospace; font-size: 12px; letter-spacing: .19em; text-transform: uppercase; }
.signal-label { display: flex; align-items: center; gap: 10px; }
.signal-label span { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 7px rgba(102, 230, 225, .1), 0 0 24px var(--cyan); }
.hero h1, .download-hero h1, .help-hero h1 { max-width: 760px; margin: 0; font-family: var(--display); font-size: clamp(54px, 6.7vw, 106px); line-height: .98; letter-spacing: -.065em; font-weight: 900; }
.hero h1 em, .download-hero h1 em, .help-hero h1 em { color: var(--cyan); font-style: normal; -webkit-text-stroke: 1px rgba(255,255,255,.06); text-shadow: 0 0 38px rgba(102, 230, 225, .2); }
.hero-lead { max-width: 570px; margin: 30px 0 0; color: #b8d0d5; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button { min-height: 50px; min-width: 154px; padding: 11px 24px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 12px; font-weight: 800; white-space: nowrap; word-break: keep-all; writing-mode: horizontal-tb; transition: transform .25s ease, border-color .25s ease, background .25s ease; }
.button:hover { transform: translateY(-3px); }
.button-primary { color: var(--ink); background: var(--cyan); box-shadow: 0 10px 36px rgba(35, 180, 176, .2); }
.button-primary:hover { background: #98f5ef; }
.button-ghost { color: #e9ffff; border-color: rgba(169, 229, 231, .35); background: rgba(17, 52, 72, .45); }
.button-ghost:hover { border-color: var(--cyan); }
.hero-status { display: flex; gap: 38px; margin: 40px 0 0; padding-top: 20px; border-top: 1px solid var(--line); }
.hero-status div { display: grid; gap: 4px; }
.hero-status dt { color: #73929b; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.hero-status dd { margin: 0; color: #e3f4f4; font-size: 13px; font-weight: 700; }
.hero-status i { width: 7px; height: 7px; display: inline-block; margin-right: 8px; border-radius: 50%; background: #77f38a; box-shadow: 0 0 10px #77f38a; }
.hero-media { position: relative; z-index: 1; align-self: center; min-width: 0; }
.hero-media img { position: relative; z-index: 2; filter: drop-shadow(0 38px 60px rgba(0, 0, 0, .45)); }
.orbit-shell { position: absolute; inset: 3% -6% 3% -6%; z-index: 0; }
.orbit { position: absolute; inset: 5%; border: 1px solid rgba(102, 230, 225, .18); border-radius: 50%; transform: rotate(-18deg); }
.orbit::after { content: ""; position: absolute; left: 10%; top: 22%; width: 10px; height: 10px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 22px var(--gold); }
.orbit-b { inset: 17% 1%; transform: rotate(28deg); border-color: rgba(243, 199, 106, .18); }
.orbit-b::after { left: 82%; top: 64%; width: 7px; height: 7px; background: var(--cyan); }
.orbit-dot { position: absolute; inset: 34%; border: 1px dashed rgba(169, 229, 231, .27); border-radius: 50%; }
.route-note { position: absolute; z-index: 3; width: 190px; padding: 12px 14px; background: rgba(7, 27, 42, .88); border: 1px solid var(--line); border-radius: 12px; backdrop-filter: blur(12px); }
.route-note small { display: block; color: var(--gold); font-family: Consolas, monospace; font-size: 10px; letter-spacing: .14em; }
.route-note strong { font-size: 12px; }
.route-note-a { left: -3%; bottom: 12%; }
.route-note-b { right: -2%; top: 18%; }
.hero-rail { align-self: stretch; padding: 32px 0; display: flex; flex-direction: column; align-items: center; gap: 16px; color: #668995; font-family: Consolas, monospace; font-size: 10px; letter-spacing: .12em; writing-mode: vertical-rl; }
.hero-rail b { width: 1px; flex: 1; background: linear-gradient(var(--cyan), transparent); }

section:not(.hero):not(.contact-strip):not(.download-hero):not(.help-hero) { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.section-heading { margin-bottom: 46px; }
.section-heading h2, .feature-intro h2, .data-caption h2, .partner-copy h2, .faq-aside h2, .install-copy h2, .requirements h2, .download-support h2, .diagnostic-head h2, .support-console h2 { margin: 0; font-family: var(--display); font-size: clamp(39px, 5vw, 68px); line-height: 1.08; letter-spacing: -.045em; }
.section-heading p:not(.eyebrow) { max-width: 510px; margin: 0; color: var(--mist); }
.split-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.split-heading .eyebrow { margin-bottom: 10px; }
.centered-heading { text-align: center; }
.centered-heading p:not(.eyebrow) { margin: 14px auto 0; }

.download-zone { padding: 120px 0; }
.download-matrix { display: grid; grid-template-columns: 1.2fr .8fr .8fr; grid-template-rows: repeat(2, auto); gap: 14px; }
.download-card { min-width: 0; padding: 28px; display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start; border: 1px solid var(--line); border-radius: 20px; background: rgba(12, 39, 57, .72); transition: transform .25s ease, border-color .25s ease; }
.download-card:hover { transform: translateY(-5px); border-color: rgba(102, 230, 225, .55); }
.download-featured { grid-row: span 2; padding: 38px; align-content: start; background: linear-gradient(145deg, rgba(19, 76, 92, .88), rgba(9, 36, 53, .92)); }
.platform-symbol { width: 54px; height: 54px; display: grid; place-items: center; color: var(--cyan); border: 1px solid rgba(102, 230, 225, .42); border-radius: 50%; font-family: var(--display); font-size: 22px; font-weight: 900; }
.platform-info p { margin: 0; color: #6e98a2; font-family: Consolas, monospace; font-size: 10px; letter-spacing: .13em; }
.platform-info h3 { margin: 2px 0 3px; font-size: 23px; }
.platform-info span { color: #9ab7bd; font-size: 12px; }
.download-card ul { grid-column: 1 / -1; margin: 10px 0 4px; padding: 0; list-style: none; color: #bed1d4; font-size: 13px; }
.download-card li { padding: 7px 0; border-bottom: 1px solid rgba(156, 220, 221, .1); }
.download-card li::before { content: "↗"; margin-right: 9px; color: var(--gold); }
.download-button { grid-column: 1 / -1; min-width: 150px; min-height: 44px; padding: 9px 18px; display: inline-flex; justify-content: center; align-items: center; color: var(--ink); background: var(--paper); border-radius: 10px; font-size: 13px; font-weight: 900; white-space: nowrap; word-break: keep-all; writing-mode: horizontal-tb; transition: background .25s ease, transform .25s ease; }
.download-button:hover { background: var(--cyan); transform: translateY(-2px); }
.download-more { margin: 24px 0 0; text-align: right; color: var(--cyan); font-size: 14px; }

.feature-deck { padding: 110px 0; display: grid; grid-template-columns: .82fr 1.18fr; gap: 84px; align-items: start; }
.feature-intro { position: sticky; top: 120px; }
.feature-intro > p:not(.eyebrow) { max-width: 470px; color: var(--mist); }
.feature-intro img { display: block; width: 100%; height: auto; margin-top: 36px; object-fit: contain; border-radius: 22px; opacity: .88; }
.feature-list { border-top: 1px solid var(--line); }
.feature-list article { padding: 28px 0; display: grid; grid-template-columns: 76px 1fr; gap: 22px; border-bottom: 1px solid var(--line); }
.feature-list article > span { color: var(--gold); font-family: Consolas, monospace; font-size: 12px; letter-spacing: .15em; }
.feature-list h3 { margin: -5px 0 5px; font-size: 23px; }
.feature-list p { margin: 0; color: var(--mist); font-size: 14px; }

.pricing-orbit { padding: 118px 0; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); align-items: stretch; gap: 18px; }
.price-card { min-width: 0; padding: 34px; position: relative; border: 1px solid var(--line); border-radius: 22px; background: rgba(10, 34, 51, .75); overflow: hidden; }
.price-card::before { content: ""; position: absolute; width: 240px; height: 240px; right: -160px; top: -160px; border: 1px solid rgba(102, 230, 225, .18); border-radius: 50%; box-shadow: 0 0 0 24px rgba(102, 230, 225, .025), 0 0 0 48px rgba(102, 230, 225, .015); }
.price-card.recommended { transform: translateY(-15px); border-color: rgba(102, 230, 225, .55); background: linear-gradient(160deg, rgba(19, 73, 88, .92), rgba(9, 34, 51, .9)); box-shadow: 0 24px 60px rgba(0, 0, 0, .25); }
.recommend-label { position: absolute; right: 18px; top: 18px; padding: 4px 10px; color: var(--ink); background: var(--gold); border-radius: 20px; font-size: 10px; font-weight: 900; }
.plan-code { margin: 0 0 24px; color: var(--cyan); font-family: Consolas, monospace; font-size: 11px; letter-spacing: .14em; }
.price-card h3 { margin: 0; font-size: 25px; }
.price { margin: 20px 0 12px; display: flex; align-items: baseline; gap: 8px; }
.price b { font-family: var(--display); font-size: 56px; line-height: 1; letter-spacing: -.05em; }
.price span, .audience { color: var(--mist); font-size: 13px; }
.audience { min-height: 46px; margin-bottom: 22px; }
.price-card ul { min-height: 140px; margin: 0 0 26px; padding: 0; list-style: none; }
.price-card li { padding: 8px 0; color: #c5dcdf; font-size: 14px; }
.price-card li::before { content: "•"; margin-right: 10px; color: var(--cyan); }
.price-card .button { width: 100%; }

.data-belt { padding: 88px 0; display: grid; grid-template-columns: .62fr 1.38fr; gap: 58px; align-items: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.data-caption .eyebrow { margin-bottom: 12px; }
.data-grid { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; }
.data-grid div { min-height: 150px; padding: 24px; border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
.data-grid div:nth-child(-n+2) { border-top: 0; }
.data-grid dt { color: #91abb2; font-size: 12px; }
.data-grid dd { margin: 10px 0 0; }
.data-grid strong { font-family: var(--display); font-size: clamp(46px, 5vw, 72px); line-height: 1; letter-spacing: -.05em; }
.data-grid span { margin-left: 5px; color: var(--gold); font-family: Consolas, monospace; }

.news-observatory { padding: 128px 0 90px; }
.news-observatory .split-heading > a { color: var(--cyan); font-size: 14px; }
.news-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; }
.news-lead { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: rgba(11, 38, 57, .7); }
.news-lead img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.news-lead div { padding: 28px; }
.news-lead time, .news-list time { color: var(--gold); font-family: Consolas, monospace; font-size: 11px; letter-spacing: .12em; }
.news-lead h3 { margin: 10px 0; font-size: 25px; }
.news-lead p { margin: 0 0 16px; color: var(--mist); font-size: 14px; }
.news-lead a { color: var(--cyan); font-size: 13px; }
.news-list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.news-list > a { flex: 1; padding: 22px 10px; display: grid; grid-template-columns: 80px 1fr; align-items: center; gap: 14px; border-bottom: 1px solid var(--line); transition: background .25s ease, padding .25s ease; }
.news-list > a:hover { padding-left: 20px; background: rgba(102, 230, 225, .05); }
.news-list span { color: #d2e5e7; font-size: 14px; }
.news-list b { display: block; margin-bottom: 5px; color: #73949c; font-size: 11px; letter-spacing: .08em; }

.partner-gateway { margin-top: 50px; margin-bottom: 130px; padding: 62px; display: grid; grid-template-columns: 1fr 1.1fr; gap: 70px; align-items: center; position: relative; overflow: hidden; border: 1px solid rgba(102, 230, 225, .32); border-radius: 30px; background: linear-gradient(120deg, rgba(15, 65, 80, .92), rgba(8, 31, 49, .94)); }
.partner-gateway::before { content: ""; position: absolute; width: 620px; height: 620px; right: -330px; top: -350px; border: 1px solid rgba(243, 199, 106, .22); border-radius: 50%; box-shadow: 0 0 0 50px rgba(243, 199, 106, .025), 0 0 0 100px rgba(243, 199, 106, .015); }
.partner-copy { position: relative; z-index: 1; }
.partner-copy > p:not(.eyebrow) { max-width: 520px; color: #b6d0d4; }
.partner-copy .button { margin-top: 20px; }
.partner-stats { margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); position: relative; z-index: 1; }
.partner-stats div { padding: 25px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.partner-stats div:nth-child(n+3) { border-bottom: 0; }
.partner-stats dt { color: #8eabb1; font-size: 12px; }
.partner-stats dd { margin: 5px 0 0; font-family: var(--display); font-size: 39px; font-weight: 900; letter-spacing: -.04em; }

.faq-terminal { padding: 100px 0 120px; display: grid; grid-template-columns: .62fr 1.38fr; gap: 90px; }
.faq-aside { position: sticky; top: 120px; align-self: start; }
.faq-aside p:not(.eyebrow) { color: var(--mist); }
.faq-aside a { color: var(--cyan); font-size: 14px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
.faq-list summary { padding: 25px 0; display: flex; justify-content: space-between; gap: 25px; font-size: 17px; font-weight: 800; }
.faq-list summary span, .knowledge-group summary i { width: 22px; height: 22px; flex: none; position: relative; border: 1px solid var(--line); border-radius: 50%; }
.faq-list summary span::before, .faq-list summary span::after, .knowledge-group summary i::before, .knowledge-group summary i::after { content: ""; position: absolute; left: 5px; right: 5px; top: 10px; height: 1px; background: var(--cyan); }
.faq-list summary span::after, .knowledge-group summary i::after { transform: rotate(90deg); transition: transform .2s ease; }
details[open] summary span::after, details[open] summary i::after { transform: rotate(0); }
.faq-list details > p { margin: -5px 40px 24px 0; color: var(--mist); font-size: 14px; }
.contact-strip { width: 100%; padding: 25px max(24px, calc((100vw - var(--max)) / 2)); display: flex; justify-content: space-between; align-items: center; gap: 24px; color: var(--ink); background: var(--gold); }
.contact-strip p { margin: 0; font-size: 18px; font-weight: 900; }
.contact-strip p span { margin-right: 18px; font-family: Consolas, monospace; font-size: 11px; letter-spacing: .14em; }
.contact-strip a { padding: 8px 18px; border: 1px solid rgba(6, 19, 31, .4); border-radius: 10px; font-weight: 900; white-space: nowrap; }

.site-footer { padding: 76px max(24px, calc((100vw - var(--max)) / 2)) 22px; background: #040e17; border-top: 1px solid rgba(151, 219, 220, .14); }
.footer-main { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 55px; }
.footer-brand p { max-width: 300px; color: #7f9da5; font-size: 13px; }
.footer-nav { display: flex; flex-direction: column; gap: 9px; }
.footer-nav h2 { margin: 0 0 8px; color: #6d8991; font-size: 11px; letter-spacing: .12em; }
.footer-nav a { color: #afc6ca; font-size: 13px; }
.footer-nav a:hover { color: var(--cyan); }
.footer-bottom { margin-top: 54px; padding-top: 18px; display: flex; align-items: center; gap: 28px; border-top: 1px solid rgba(151, 219, 220, .1); color: #607d86; font-size: 11px; }
.footer-bottom p { margin: 0; }
.footer-bottom a { margin-left: auto; color: #8ca8af; }

.download-hero { width: min(calc(100% - 48px), var(--max)); min-height: 670px; margin: 0 auto; padding: 82px 0 90px; display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 70px; position: relative; }
.download-hero-copy > p:not(.signal-label), .help-heading > p:not(.signal-label) { max-width: 570px; color: var(--mist); font-size: 17px; }
.compatibility { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 8px; }
.compatibility span { padding: 6px 11px; color: #b7d0d5; border: 1px solid var(--line); border-radius: 20px; font-family: Consolas, monospace; font-size: 10px; letter-spacing: .09em; }
.download-hero-media { position: relative; align-self: center; }
.download-hero-media img { display: block; width: 100%; height: auto; object-fit: contain; filter: drop-shadow(0 32px 50px rgba(0,0,0,.42)); }
.media-coordinate { position: absolute; right: 0; bottom: 4%; padding: 12px 15px; color: #7697a0; border-left: 2px solid var(--gold); background: rgba(5, 21, 33, .88); font-family: Consolas, monospace; font-size: 10px; letter-spacing: .1em; }
.media-coordinate b { color: #e6f6f6; font-size: 12px; }
.platform-hangar { padding: 100px 0 120px; }
.platform-stack { display: flex; flex-direction: column; gap: 12px; }
.platform-row { padding: 28px 30px; display: grid; grid-template-columns: 46px 92px minmax(0, 1fr) 240px; align-items: center; gap: 24px; border: 1px solid var(--line); border-radius: 20px; background: rgba(9, 33, 50, .72); transition: border-color .25s ease, transform .25s ease; }
.platform-row:hover { transform: translateX(5px); border-color: rgba(102, 230, 225, .5); }
.platform-index { color: #668992; font-family: Consolas, monospace; font-size: 11px; }
.platform-large-symbol { width: 76px; height: 76px; display: grid; place-items: center; border: 1px solid rgba(102, 230, 225, .35); border-radius: 50%; color: var(--cyan); font-family: var(--display); font-size: 18px; font-weight: 900; }
.platform-content > p { margin: 0; color: var(--gold); font-family: Consolas, monospace; font-size: 9px; letter-spacing: .16em; }
.platform-content h2 { margin: 1px 0 0; font-size: 23px; }
.platform-content > span { color: #7998a0; font-size: 11px; }
.platform-content ul { margin: 10px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 14px; list-style: none; color: #b9cfd2; font-size: 11px; }
.platform-content li::before { content: "•"; margin-right: 6px; color: var(--cyan); }
.platform-action { display: grid; gap: 7px; justify-items: stretch; text-align: center; }
.platform-action strong { color: #cbe0e2; font-size: 12px; }
.platform-action small { color: #607d85; font-size: 9px; }
.platform-action .download-button { width: 100%; }
.install-flight { padding: 100px 0; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 80px; }
.install-visual { position: relative; }
.install-visual img { display: block; width: 100%; height: auto; object-fit: contain; border-radius: 24px; }
.install-badge { position: absolute; right: -18px; bottom: 12%; padding: 15px 18px; color: #7a989f; background: var(--deep); border: 1px solid var(--line); border-radius: 12px; font-family: Consolas, monospace; font-size: 10px; letter-spacing: .1em; }
.install-badge b { color: var(--cyan-soft); font-size: 13px; }
.install-copy ol { margin: 34px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.install-copy li { padding: 20px 0; display: grid; grid-template-columns: 55px 1fr; gap: 16px; border-bottom: 1px solid var(--line); }
.install-copy li > span { color: var(--gold); font-family: Consolas, monospace; font-size: 11px; }
.install-copy h3 { margin: -4px 0 3px; font-size: 18px; }
.install-copy li p { margin: 0; color: var(--mist); font-size: 13px; }
.requirements { padding: 90px 0 120px; }
.requirements header { display: flex; justify-content: space-between; align-items: end; margin-bottom: 40px; }
.requirements-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.requirements-grid article { min-height: 230px; padding: 27px; border: 1px solid var(--line); border-right: 0; }
.requirements-grid article:first-child { border-radius: 20px 0 0 20px; }
.requirements-grid article:last-child { border-right: 1px solid var(--line); border-radius: 0 20px 20px 0; }
.requirements-grid span { width: 50px; height: 50px; display: grid; place-items: center; color: var(--cyan); border: 1px solid rgba(102,230,225,.35); border-radius: 50%; font-size: 12px; }
.requirements-grid h3 { margin: 26px 0 8px; font-size: 18px; }
.requirements-grid p { margin: 0; color: var(--mist); font-size: 13px; }
.download-support, .support-console { margin-bottom: 120px; padding: 50px 56px; display: flex; justify-content: space-between; align-items: center; gap: 40px; border: 1px solid rgba(102, 230, 225, .3); border-radius: 26px; background: rgba(13, 49, 68, .78); }
.download-support p:not(.eyebrow), .support-console p:not(.eyebrow) { max-width: 680px; margin-bottom: 0; color: var(--mist); }

.help-hero { width: min(calc(100% - 48px), var(--max)); min-height: 600px; margin: 0 auto; padding: 90px 0; display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 100px; position: relative; }
.help-hero h1 { font-size: clamp(50px, 6vw, 86px); }
.help-search { position: relative; z-index: 2; padding: 32px; border: 1px solid var(--line); border-radius: 24px; background: rgba(9, 35, 53, .78); box-shadow: 0 25px 70px rgba(0,0,0,.24); }
.help-search label { display: block; margin-bottom: 12px; color: #9cb8be; font-size: 13px; }
.help-search > div { display: grid; grid-template-columns: 1fr auto; padding: 6px; border: 1px solid rgba(102,230,225,.35); border-radius: 13px; background: #061926; }
.help-search input { min-width: 0; padding: 13px 14px; color: #fff; border: 0; outline: 0; background: transparent; }
.help-search input::placeholder { color: #607d85; }
.help-search #help-search-action { min-width: 90px; min-height: 46px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink); border: 0; border-radius: 9px; background: var(--cyan); font-weight: 900; cursor: pointer; white-space: nowrap; }
.help-search p { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 0; color: #718e96; font-size: 11px; }
.help-search p a { color: #b8d0d4; }
.help-orbit { position: absolute; width: 430px; height: 430px; right: -90px; top: 70px; opacity: .3; pointer-events: none; }
.help-orbit i { position: absolute; inset: 0; border: 1px solid rgba(102,230,225,.3); border-radius: 50%; }
.help-orbit i:nth-child(2) { inset: 60px; border-style: dashed; }
.help-orbit i:nth-child(3) { inset: 120px; border-color: rgba(243,199,106,.35); }
.help-map { padding: 90px 0 120px; }
.topic-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.topic-grid a { min-height: 245px; padding: 24px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 18px; background: rgba(10, 34, 51, .68); transition: transform .25s ease, border-color .25s ease; }
.topic-grid a:hover { transform: translateY(-6px); border-color: var(--cyan); }
.topic-grid span { color: var(--gold); font-family: Consolas, monospace; font-size: 10px; }
.topic-grid h3 { margin: auto 0 8px; font-size: 19px; }
.topic-grid p { margin: 0 0 14px; color: var(--mist); font-size: 12px; }
.topic-grid b { color: var(--cyan); font-size: 11px; }
.diagnostic-route { padding: 110px 0; display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; }
.diagnostic-head { position: sticky; top: 120px; align-self: start; }
.diagnostic-head > p:not(.eyebrow) { color: var(--mist); }
.diagnostic-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.diagnostic-steps li { padding: 24px 0; display: grid; grid-template-columns: 62px 1fr; gap: 18px; border-bottom: 1px solid var(--line); }
.diagnostic-steps li > span { width: 40px; height: 40px; display: grid; place-items: center; color: var(--gold); border: 1px solid rgba(243,199,106,.3); border-radius: 50%; font-family: Consolas, monospace; font-size: 10px; }
.diagnostic-steps h3 { margin: 0 0 6px; font-size: 19px; }
.diagnostic-steps p { margin: 0; color: var(--mist); font-size: 13px; }
.knowledge-base { padding: 120px 0; }
.knowledge-columns { margin-top: 64px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px 60px; }
.knowledge-group { scroll-margin-top: 100px; }
.knowledge-group > h2 { margin: 0; padding-bottom: 17px; border-bottom: 2px solid rgba(102,230,225,.3); font-size: 22px; }
.knowledge-group > h2 span { margin-right: 12px; color: var(--gold); font-family: Consolas, monospace; font-size: 9px; letter-spacing: .12em; }
.knowledge-group summary { padding: 20px 0; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 14px; font-weight: 800; }
.knowledge-group details > p { margin: -4px 34px 20px 0; color: var(--mist); font-size: 13px; }
.knowledge-group summary i { width: 20px; height: 20px; }
.knowledge-group summary i::before, .knowledge-group summary i::after { top: 9px; left: 5px; right: 5px; }
.support-actions { display: flex; flex-wrap: wrap; gap: 12px; }

@media (max-width: 1180px) {
  .site-header { grid-template-columns: auto auto 1fr auto; }
  .nav-toggle { display: block; grid-column: 2; }
  .site-nav { position: absolute; left: 0; right: 0; top: calc(100% + 8px); padding: 18px; display: none; grid-template-columns: repeat(2, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 16px; background: rgba(6, 19, 31, .98); box-shadow: 0 20px 40px rgba(0,0,0,.35); }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: 12px; }
  .site-nav a::after { display: none; }
  .header-cta { grid-column: 4; }
  .hero { grid-template-columns: .9fr 1.1fr; }
  .hero-rail { display: none; }
  .download-matrix { grid-template-columns: repeat(2, 1fr); }
  .download-featured { grid-row: auto; }
  .feature-deck { gap: 55px; }
  .platform-row { grid-template-columns: 42px 74px minmax(0, 1fr) 210px; gap: 16px; }
  .topic-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .hero, .download-hero, .help-hero { min-height: auto; padding: 80px 0; grid-template-columns: 1fr; gap: 50px; }
  .hero-media { max-width: 680px; margin: 0 auto; }
  .download-hero-media { max-width: 680px; margin: 0 auto; }
  .help-hero { gap: 40px; }
  .help-orbit { right: -220px; }
  .feature-deck, .data-belt, .partner-gateway, .faq-terminal, .install-flight, .diagnostic-route { grid-template-columns: 1fr; }
  .feature-intro, .faq-aside, .diagnostic-head { position: static; }
  .feature-intro img { max-width: 620px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .price-card.recommended { transform: none; }
  .news-layout { grid-template-columns: 1fr; }
  .partner-gateway { gap: 40px; padding: 45px; }
  .faq-terminal { gap: 45px; }
  .footer-main { grid-template-columns: repeat(2, 1fr); }
  .platform-row { grid-template-columns: 42px 70px 1fr; }
  .platform-action { grid-column: 3; justify-items: start; }
  .platform-action .download-button { width: auto; }
  .requirements-grid { grid-template-columns: repeat(2, 1fr); }
  .requirements-grid article { border-right: 1px solid var(--line); border-radius: 0 !important; }
  .requirements-grid article:nth-child(1) { border-radius: 20px 0 0 0 !important; }
  .requirements-grid article:nth-child(2) { border-radius: 0 20px 0 0 !important; }
  .requirements-grid article:nth-child(3) { border-radius: 0 0 0 20px !important; }
  .requirements-grid article:nth-child(4) { border-radius: 0 0 20px 0 !important; }
  .knowledge-columns { gap: 50px 36px; }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 82px; }
  .site-header { width: calc(100% - 20px); min-height: 64px; margin-top: 8px; padding: 0 10px 0 14px; gap: 9px; top: 7px; }
  .brand { font-size: 16px; }
  .brand-mark { width: 25px; height: 25px; }
  .brand-mark::after { width: 31px; top: 5px; }
  .header-cta { min-width: auto; min-height: 40px; padding: 7px 12px; font-size: 12px; }
  .nav-toggle { width: 40px; height: 40px; }
  .site-nav { grid-template-columns: 1fr; max-height: calc(100vh - 90px); overflow-y: auto; }
  .hero, .download-hero, .help-hero, section:not(.hero):not(.contact-strip):not(.download-hero):not(.help-hero) { width: calc(100% - 30px); }
  .hero { padding: 68px 0 60px; }
  .hero h1, .download-hero h1, .help-hero h1 { font-size: clamp(46px, 15vw, 68px); }
  .hero-lead, .download-hero-copy > p:not(.signal-label), .help-heading > p:not(.signal-label) { font-size: 15px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .hero-status { gap: 20px; }
  .route-note { display: none; }
  .section-heading h2, .feature-intro h2, .data-caption h2, .partner-copy h2, .faq-aside h2, .install-copy h2, .requirements h2, .download-support h2, .diagnostic-head h2, .support-console h2 { font-size: 39px; }
  .split-heading { display: block; }
  .split-heading p:not(.eyebrow), .split-heading > a { margin-top: 14px; display: block; }
  .download-zone, .feature-deck, .pricing-orbit, .news-observatory, .help-map, .platform-hangar, .knowledge-base { padding: 80px 0; }
  .download-matrix { grid-template-columns: 1fr; }
  .download-card, .download-featured { padding: 24px; }
  .feature-deck { gap: 40px; }
  .feature-list article { grid-template-columns: 52px 1fr; }
  .data-belt { padding: 65px 0; gap: 35px; }
  .data-grid div { padding: 18px 10px; min-height: 120px; }
  .partner-gateway { margin-bottom: 80px; padding: 32px 24px; }
  .partner-stats div { padding: 17px 10px; }
  .partner-stats dd { font-size: 29px; }
  .faq-terminal { padding: 70px 0 90px; }
  .contact-strip { padding: 20px; display: block; text-align: center; }
  .contact-strip p { font-size: 15px; }
  .contact-strip p span { display: block; margin: 0 0 7px; }
  .contact-strip a { display: inline-block; margin-top: 12px; }
  .site-footer { padding-top: 55px; }
  .footer-main { grid-template-columns: 1fr; gap: 35px; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 8px; }
  .footer-bottom a { margin-left: 0; }
  .platform-row { padding: 22px; grid-template-columns: 42px 1fr; gap: 15px; }
  .platform-index { grid-column: 1; }
  .platform-large-symbol { width: 62px; height: 62px; grid-column: 1; grid-row: 2; }
  .platform-content { grid-column: 2; grid-row: 1 / span 2; }
  .platform-content ul { display: grid; gap: 4px; }
  .platform-action { grid-column: 1 / -1; justify-items: stretch; }
  .platform-action .download-button { width: 100%; }
  .install-flight { padding: 70px 0; gap: 45px; }
  .install-badge { right: 5px; }
  .requirements { padding: 70px 0 90px; }
  .requirements header { display: block; }
  .requirements-grid { grid-template-columns: 1fr; }
  .requirements-grid article { min-height: auto; border-radius: 0 !important; }
  .requirements-grid article:first-child { border-radius: 18px 18px 0 0 !important; }
  .requirements-grid article:last-child { border-radius: 0 0 18px 18px !important; }
  .download-support, .support-console { margin-bottom: 80px; padding: 32px 24px; display: block; }
  .download-support .button, .support-actions { margin-top: 24px; }
  .help-search { padding: 22px; }
  .help-search > div { grid-template-columns: 1fr; }
  .help-search #help-search-action { min-height: 44px; }
  .topic-grid { grid-template-columns: 1fr; }
  .topic-grid a { min-height: 180px; }
  .diagnostic-route { padding: 70px 0; gap: 35px; }
  .knowledge-columns { grid-template-columns: 1fr; }
}

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

.hero { align-items: center !important; }
.hero-media { align-self: center !important; height: auto !important; min-height: 0 !important; max-height: none !important; padding: 0 !important; margin-top: 0 !important; margin-bottom: 0 !important; overflow: visible !important; transform: none !important; clip-path: none !important; }
.hero-media img { display: block !important; width: 100% !important; height: auto !important; min-height: 0 !important; max-height: none !important; margin: 0 !important; padding: 0 !important; object-fit: contain !important; object-position: center !important; transform: none !important; clip-path: none !important; }