:root{--ink:#24354b;--muted:#5b6978;--paper:#f7f8f6;--blue:#437aa6;--line:#dbe0e3;--gold:#b68a51;--navy:#22374e;--hero-rgb:247 248 246;--button-bg:#24354b;--button-hover:#354e69;--code-bg:#24354b;--tip-bg:#eef0ed;--feature-line:#24354b30;color-scheme:light;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #318ddb;outline-offset:2px}a:hover{text-decoration:underline;text-underline-offset:5px}h1,h2,h3,p,figure{margin:0}p{line-height:1.7}h1,h2{font-weight:500;letter-spacing:-.055em;line-height:1.06}h2{font-size:clamp(32px,4vw,48px)}h3{font-size:18px;font-weight:600;letter-spacing:-.025em}img{display:block;max-width:100%;height:auto}.wrap{width:min(1160px,calc(100% - 80px));margin:auto}.topbar{position:absolute;top:0;left:0;right:0;height:72px;padding:0 16px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:20px;background:var(--navy);color:white;box-shadow:0 2px 8px #08213c30;z-index:20;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;padding-top:env(safe-area-inset-top)}.identity{display:flex;gap:8px;align-items:center;justify-self:start;white-space:nowrap;min-height:48px;padding:0 12px;border-radius:5px}.identity:hover{background:#ffffff18;text-decoration:none}.identity strong{display:block;font-family:"360 Aero",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:20px;font-weight:650;letter-spacing:-.6px}.top-actions{display:flex;align-items:center;justify-self:end;gap:8px}.topbar-action{display:inline-flex;align-items:center;justify-content:center;height:48px;min-width:46px;gap:8px;padding:0 12px;border-radius:5px;color:#d8e0e9;font-size:12px;white-space:nowrap}.topbar-action:hover{background:#ffffff18;text-decoration:none}.topbar-action.join{background:#ffffff12;color:white}.topbar-action.join:hover{background:#ffffff24}.brand{font-family:"360 Aero",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:20px;font-weight:650;letter-spacing:-.6px;white-space:nowrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;max-width:100%;padding:10px 16px;border:0;border-radius:4px;background:#337fbd;color:white;font:400 13px/1.5 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;text-decoration:none;touch-action:manipulation}.button:hover{background:#428ec8;text-decoration:none}.button:active{background:#2b70a8}.text-link{font-size:14px;font-weight:600;display:inline-flex;gap:20px;align-items:center}.eyebrow{font-size:10px;font-weight:700;letter-spacing:1.8px;line-height:1.5;margin-bottom:24px}.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--gold);margin-right:9px}.hero{position:relative;isolation:isolate;display:flex;flex-direction:column;justify-content:center;min-height:100vh;min-height:100svh;width:100%;overflow:hidden;background:var(--navy)}.hero-map,.hero-map>.map{position:absolute;inset:0;width:100%;height:100%}.hero-shade{position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,rgb(var(--hero-rgb)/0.949) 0%,rgb(var(--hero-rgb)/0.851) 30%,rgb(var(--hero-rgb)/0.4) 58%,rgb(var(--hero-rgb)/0.063) 100%),linear-gradient(180deg,rgb(var(--hero-rgb)/0.2) 0%,transparent 55%,rgb(var(--hero-rgb)/0.949) 100%)}.hero-inner{position:relative;z-index:2;flex:1;display:flex;align-items:center;padding:144px 0 64px;pointer-events:none}.hero-copy{max-width:680px}.hero-copy a{pointer-events:auto}.hero h1{font-size:clamp(50px,5.5vw,80px);white-space:nowrap}.hero h1 span{color:var(--blue)}.hero-map .live-aircraft{border:0;padding:0;background:transparent;color:#254d70;pointer-events:none}.hero-map .live-symbol{display:block;font-size:24px;text-shadow:0 0 3px white}.hero-map .live-aircraft.stale{opacity:.5}
.hero .lead{color:var(--muted);font-size:17px;margin-top:27px;line-height:1.75}.actions{display:flex;align-items:center;gap:28px;margin-top:33px}.micro{font-size:11px;color:var(--muted);margin-top:19px;line-height:1.7}.section-top{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:32px}.section-top>p{font-size:14px;color:var(--muted)}.guide{padding:85px 0}.steps{display:grid;gap:14px;padding:0;margin:0;list-style:none}.steps>li{border:1px solid var(--line);border-radius:10px;background:var(--guide-surface)}summary{cursor:pointer;list-style:none}summary::-webkit-details-marker{display:none}.steps>li>details>summary{display:flex;align-items:center;gap:16px;padding:24px}.step-num{display:grid;place-items:center;flex:0 0 36px;width:36px;height:36px;border:1px solid var(--line);border-radius:8px;background:var(--guide-subtle);color:var(--blue);font-size:13px;font-weight:600}.steps summary>span:nth-child(2){font-size:20px;letter-spacing:-.4px}.steps summary small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:7px;letter-spacing:0}.expand{margin-left:auto;font-size:23px;font-weight:300}.steps details[open]>summary .expand{transform:rotate(45deg)}.step-body{min-width:0;margin-left:76px;max-width:940px;padding:0 24px 24px 0}.step-body p{font-size:14px;color:var(--muted);margin:0 0 14px}.step-body a{text-decoration:underline;text-underline-offset:3px;color:var(--ink)}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.88em;overflow-wrap:anywhere}pre{background:var(--code-bg);color:#edf4fa;padding:20px;overflow:auto;margin:0 0 18px;border-radius:0 0 5px 5px;line-height:1.8}pre code{white-space:pre;font-size:12px}.code-head{background:var(--code-head-bg);color:#dbe8f4;padding:10px 16px;display:flex;gap:12px;justify-content:space-between;align-items:center;font-size:13px;line-height:1.5}.code-head button{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;min-height:46px;border:1px solid #8297a9;border-radius:4px;background:transparent;color:white;padding:0 12px;font:400 13px/1.5 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;touch-action:manipulation}.code-head button:hover{background:#ffffff12}.tip{display:flex;align-items:flex-start;gap:12px;padding:16px 18px;border:1px solid var(--line);border-radius:8px;background:var(--guide-subtle)}.tip svg{flex-shrink:0;margin-top:2px;color:var(--blue)}.footer{border-top:1px solid var(--line);padding:30px 0;display:flex;align-items:center;gap:25px}.footer .brand{font-size:20px}.footer p,.footer small{font-size:10px;color:var(--muted)}.footer nav{margin-left:auto;display:flex;gap:24px;font-size:11px;align-items:center}.footer nav button{border:0;background:transparent;color:inherit;font-size:11px;padding:0}.skip{position:absolute;top:-100px;left:20px;background:var(--paper);padding:15px;z-index:20}.skip:focus{top:10px}dialog{max-width:600px;width:calc(100% - 40px);border:1px solid var(--line);border-radius:6px;padding:30px;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#102238aa}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.dialog-head h2{font-size:25px}.dialog-head button{background:none;border:0;font-size:30px;color:inherit}dialog p{font-size:13px;margin-top:17px;color:var(--muted)}dialog a{text-decoration:underline}[hidden]{display:none!important}


.hero-features{position:relative;z-index:2;margin-top:0;margin-bottom:42px;border-top:1px solid var(--feature-line);padding-top:24px}.hero-features ul{list-style:none;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:20px;padding:0;margin:0}.hero-features li{display:flex;align-items:flex-start;gap:12px}.hero-features svg{flex-shrink:0;color:var(--blue);margin-top:1px}.hero-features h3{font-size:13px;font-weight:600;letter-spacing:-.1px;line-height:1.5}.hero-features p{font-size:11px;color:var(--muted);margin-top:5px;line-height:1.5}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.hero h1{font-size:clamp(48px,6.5vw,65px)}.hero .lead{font-size:15px}.actions{gap:20px}.hero .actions{flex-wrap:wrap}.hero-features ul{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.hero-features li{display:block}.hero-features svg{margin-bottom:8px}.footer{flex-wrap:wrap}.footer small{width:100%}}
@media(max-width:700px){.topbar{height:64px;padding:0 10px;gap:5px}.identity{min-height:46px}.identity strong{font-size:17px}.top-actions{gap:5px}.topbar-action{height:46px;min-width:44px;padding:0 12px;font-size:11px}.topbar-action:not(.join){padding:0;width:44px}.topbar-action>span{display:none}}
@media(max-width:680px){html{scroll-padding-top:25px}.wrap{width:calc(100% - 40px)}.hero-inner{padding:112px 0 42px}.hero-copy{max-width:440px}.hero-shade{background:linear-gradient(90deg,rgb(var(--hero-rgb)/0.933),rgb(var(--hero-rgb)/0.733)),linear-gradient(180deg,rgb(var(--hero-rgb)/0.251),transparent 25%,transparent 60%,rgb(var(--hero-rgb)/0.902))}.hero h1{font-size:clamp(36px,10vw,57px);white-space:normal}.eyebrow{font-size:9px;margin-bottom:20px;letter-spacing:1.4px}.hero .lead{font-size:15px}.hero-features{padding-top:22px;margin-bottom:40px}.hero-features ul{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 16px}.hero-features li{display:flex;gap:10px}.hero-features h3{font-size:12px}.hero-features p{font-size:10px}.hero-features svg{width:18px;height:18px;margin-bottom:0}.section-top{display:block;margin-bottom:28px}.section-top>p{margin-top:20px}.guide{padding:50px 0}.steps>li>details>summary{gap:12px;padding:20px 16px}.steps summary>span:nth-child(2){font-size:18px;line-height:1.35}.steps summary small{font-size:11px}.step-body{margin-left:0;padding:0 16px 20px}.footer{gap:14px}.footer nav{margin:10px 0;width:100%;justify-content:space-between;gap:15px}}
@media(max-width:380px){.identity strong{font-size:15px}.topbar-action.join{padding:0 8px;font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}}

/* Same instant light/dark switch and navy palette as the flight map. */
:root[data-theme=dark]{color-scheme:dark;--ink:#e2eaf1;--muted:#a0b1c2;--paper:#101821;--blue:#6db3e8;--line:#304357;--gold:#c6a167;--navy:#111c29;--hero-rgb:16 24 33;--button-bg:#3d8fc9;--button-hover:#4c9cd5;--code-bg:#142130;--tip-bg:#203244;--feature-line:#a0b1c240}
#landing-actions{display:flex;align-items:center;gap:8px}
.topbar .theme-toggle,.topbar .information-toggle{display:flex;align-items:center;justify-content:center;width:46px;height:48px;flex-shrink:0;padding:0;border:0;border-radius:5px;background:transparent;color:#d8e0e9}
.topbar .theme-toggle:hover,.topbar .information-toggle:hover{background:#ffffff18}
.topbar .theme-toggle[aria-pressed=true]{color:#f3d299;background:#ffffff0b}
@media(max-width:700px){.topbar .theme-toggle,.topbar .information-toggle{width:44px;height:46px}}

/* Match the map information dialog without applying its full-screen board layout. */
.landing-info{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink)}
.landing-info .modal-shade{position:fixed;inset:0;background:#112b4760;backdrop-filter:blur(3px);display:grid;place-items:center;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr);z-index:100;padding:20px}
.landing-info .info-panel{background:#fff;min-width:0;width:min(440px,100%);border-radius:7px;box-shadow:0 15px 60px #09234255;max-height:90dvh;overflow:auto}
.landing-info .menu-heading{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line)}
.landing-info h2{flex:1;font-size:18px;font-weight:650;letter-spacing:-.5px;line-height:normal}
.landing-info .icon-button{display:inline-flex;align-items:center;justify-content:center;min-width:36px;width:36px;min-height:38px;border:0;padding:0;border-radius:5px;background:transparent;color:inherit}
.landing-info .icon-button:hover{background:#e8f1f8}
.landing-info p{padding:0 22px;margin:20px 0 0;font-size:12px;line-height:1.8;color:#6a7f92}
.landing-info a{color:#276b9d;text-decoration:none}
.landing-info .info-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:76px;padding:24px 22px;margin-top:20px;background:#f0f5f9;color:var(--muted);font-size:11px;line-height:1.8}
[data-theme=dark] .landing-info .modal-shade{background:#030a13a6}
[data-theme=dark] .landing-info .info-panel{background:#182635}
[data-theme=dark] .landing-info p{color:var(--muted)}
[data-theme=dark] .landing-info a{color:#8ac8f6}
[data-theme=dark] .landing-info .info-footer{background:#203244}
[data-theme=dark] .landing-info .icon-button:hover{background:#293f54}
@media(max-width:700px){#landing-actions{gap:5px}}

/* Feeder instructions share the map's blue and neutral palette. */
:root{--guide-surface:#fff;--guide-subtle:#f0f5f9;--code-head-bg:#30465e;--guide-hover:#e8f1f8}
:root[data-theme=dark]{--guide-surface:#14202c;--guide-subtle:#1b2c3d;--code-head-bg:#243b50;--guide-hover:#293f54}
.guide-section+.guide-section{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.guide-section h3,.connect-steps h3{margin:0 0 12px;font-size:16px;line-height:1.5;font-weight:600;letter-spacing:-.2px;color:var(--ink)}
.equipment-list{display:grid;gap:12px;margin:0 0 20px;padding-left:20px;color:var(--muted);font-size:14px;line-height:1.7}
.equipment-list li{padding-left:4px}.equipment-list strong{color:var(--ink)}
.equipment-links{display:flex;flex-wrap:wrap;gap:10px}
.button.button-secondary{border:1px solid var(--line);background:var(--guide-subtle);color:var(--ink)}
.button.button-secondary:hover{background:var(--guide-hover)}
.step-body p code{padding:3px 6px;border:1px solid var(--line);border-radius:4px;color:var(--ink);background:var(--guide-subtle);font-size:13px}
.code-block{margin:16px 0 0;min-width:0;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.code-block pre{margin:0;border-radius:0;padding:18px 16px}.code-block pre code{font-size:13px}
.connect-steps{display:grid;gap:12px;padding:0;margin:20px 0;list-style:none}
.connect-steps>li{display:grid;grid-template-columns:32px minmax(0,1fr);align-items:start;gap:14px;padding:20px;border:1px solid var(--line);border-radius:8px}
.instruction-num{display:grid;place-items:center;width:32px;height:32px;border-radius:7px;border:1px solid var(--line);background:var(--guide-subtle);color:var(--blue);font-size:14px;font-weight:600}
.connect-steps h3{margin-bottom:6px}.connect-steps p:last-child{margin-bottom:0}
.step-body .button{color:white;text-decoration:none}.step-body .button.button-secondary{color:var(--ink)}.connector-download{text-align:left}
.connector-download svg{flex-shrink:0}
@media(max-width:680px){.connect-steps>li{gap:10px;padding:16px 12px;grid-template-columns:28px minmax(0,1fr)}.instruction-num{width:28px;height:28px}.step-body .connector-download{padding:10px 12px}.code-head{padding:10px 12px;gap:8px}.code-block pre{padding:16px 12px}.tip{padding:14px}}

/* Quiet chart texture adds depth to the public sections without competing with the guide. */
body{background-image:url('/section-texture.svg');background-size:640px 640px}
.steps>li{background-image:linear-gradient(125deg,#7298ba09,transparent 65%),url('/section-texture.svg');background-size:auto,640px 640px;box-shadow:inset 0 1px 0 #ffffff05}
.hero-shade{background:linear-gradient(90deg,rgb(var(--hero-rgb)/.97) 0%,rgb(var(--hero-rgb)/.87) 28%,rgb(var(--hero-rgb)/.35) 52%,rgb(var(--hero-rgb)/.04) 75%),linear-gradient(180deg,rgb(var(--hero-rgb)/.12),transparent 50%,rgb(var(--hero-rgb)/.94) 100%)}
@media(max-width:900px){.hero-shade{background:linear-gradient(180deg,rgb(var(--hero-rgb)/.9) 0%,rgb(var(--hero-rgb)/.8) 30%,rgb(var(--hero-rgb)/.1) 56%,rgb(var(--hero-rgb)/.75) 76%,rgb(var(--hero-rgb)/.96) 100%)}}

/* betterAIM content extensions; shared betterADSB geometry above is unchanged. */
/* Inter by Rasmus Andersson; SIL Open Font License 1.1. See inter-OFL.txt. */
@font-face{font-family:"360 Aero";font-style:normal;font-weight:650;font-display:swap;src:url("/brand.woff2") format("woff2")}

.api-section{display:grid;grid-template-columns:1fr 1fr;gap:70px;padding-block:10px 85px;align-items:center}.api-copy>p:not(.eyebrow){font-size:14px;color:var(--muted);margin:24px 0 12px;max-width:400px}.api-example{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface);min-width:0}.protocol{color:var(--blue);font:11px ui-monospace,monospace}.api-example pre{padding:26px 22px;margin:0;font:12px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;overflow:auto}.code-comment{color:var(--muted)}.api-example>p{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding:16px 22px;font-size:10px;color:var(--muted)}.api-example svg{width:15px;height:15px;flex-shrink:0}
.contact-section{display:grid;grid-template-columns:1fr 1fr;gap:70px;border-top:1px solid var(--line);padding-block:75px 85px}.contact-copy>p:not(.eyebrow){font-size:14px;color:var(--muted);max-width:370px;margin-top:24px}.contact-copy dl{margin-top:34px;font-size:12px}.contact-copy dl>div{margin-bottom:24px}.contact-copy dt{font-weight:600;margin-bottom:8px}.contact-copy dd{margin:0;color:var(--muted);line-height:1.7}.contact-form{display:grid;gap:20px;padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:8px;min-width:0}.contact-form label{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;line-height:1.5}.contact-form input,.contact-form select,.contact-form textarea{width:100%;min-width:0;border:1px solid var(--line);border-radius:4px;padding:12px;background:var(--paper);color:var(--ink);font:13px/1.5 Arial,sans-serif}.contact-form input,.contact-form select{min-height:46px}.contact-form textarea{resize:vertical;min-height:120px;max-height:350px}.contact-form input:focus-visible,.contact-form select:focus-visible,.contact-form textarea:focus-visible{outline:2px solid #318ddb;outline-offset:2px}.contact-form input::placeholder,.contact-form textarea::placeholder{color:var(--muted);opacity:.8}.field-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.optional{color:var(--muted);font-size:10px}.privacy-note{font-size:10px;color:var(--muted);line-height:1.7}.contact-form .button{justify-self:start}.button:disabled{opacity:.6;cursor:wait}[hidden]{display:none!important}

:root{--surface:var(--guide-surface)}.hero-features svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.map{background:#183954}.api-example svg{fill:none;stroke:currentColor;stroke-width:1.8}.api-example .code-head{border:0}.api-example>p{background:var(--guide-surface)}.contact-form{background:var(--guide-surface)}.contact-form input,.contact-form select,.contact-form textarea{background:var(--guide-subtle)}.footer .map-credit{font-size:10px;color:var(--muted)}
@media(max-width:1000px){.api-section,.contact-section{gap:35px}.field-pair{grid-template-columns:1fr}}@media(max-width:680px){.api-section,.contact-section{grid-template-columns:1fr;padding-block:50px;gap:26px}.contact-copy dl{display:none}.contact-form{padding:20px}.api-example pre{padding:22px 16px}.footer .map-credit{width:100%}}

/* The contact form and information panel reuse the account and map component spacing. */
.contact-form{padding:20px;gap:18px;border-radius:6px;background:var(--guide-subtle);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.contact-form label{display:grid;gap:8px;font-size:12px}.contact-form input,.contact-form select,.contact-form textarea{padding:0 12px;min-height:46px;background:#f8fafc;border-color:#cfdae4;font:13px Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.contact-form textarea{padding:12px;line-height:1.7}[data-theme=dark] .contact-form input,[data-theme=dark] .contact-form select,[data-theme=dark] .contact-form textarea{background:#101d2b;border-color:#486078}.contact-form .optional{display:inline}.contact-form .field-pair{gap:18px}
.api-section .api-example pre{padding:18px 16px;line-height:1.8}.api-section .api-example pre code{font-size:13px}.api-section .api-example .code-head{padding:10px 16px;font-size:13px}.api-section .api-example .protocol{font-size:12px;color:#dbe8f4}
.landing-info dialog.info-panel{padding:0;border:0;width:min(440px,calc(100% - 40px))}.landing-info dialog::backdrop{background:#112b4760;backdrop-filter:blur(3px)}[data-theme=dark] .landing-info dialog::backdrop{background:#030a13a6}.landing-info .info-footer a{font-size:11px}.landing-info .icon-button svg{width:20px;height:20px}