:root{--ink:#10222a;--muted:#53676e;--teal:#007f91;--cyan:#17c5db;--line:#d9e6e8;--soft:#f2f8f8;--dark:#0b151a;--page:1180px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-synthesis:none}
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.header{position:sticky;top:0;z-index:10;background:#fffffff5;border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}.brand{display:flex;align-items:center;color:var(--ink);font-size:22px;font-weight:750;letter-spacing:-.8px;gap:0;white-space:nowrap}.brand img{margin-right:10px;border-radius:8px}.brand>span{color:var(--teal)}.brand:hover{text-decoration:none}.nav-links{display:flex;gap:34px;font-size:14px}.nav-links a{color:var(--muted)}.compact{padding:9px 17px;font-size:13px}
.hero{padding:66px 0 0;background:radial-gradient(ellipse at 90% 0,#e6faf9,transparent 50%),linear-gradient(#fbfefe,#f2f8f8)}.hero-copy{max-width:770px;margin:0 auto 45px;text-align:center}.hero h1{font-size:clamp(38px,4.8vw,64px);line-height:1.2;letter-spacing:-.055em}.hero .eyebrow{letter-spacing:.025em;display:flex;justify-content:center;align-items:center;gap:9px}.dot{width:7px;height:7px;background:var(--teal);border-radius:50%}.hero-description{font-size:18px;max-width:665px;margin:24px auto 0}.hero .actions{justify-content:center}.hero-note{font-size:12px;margin:19px auto 0;max-width:640px}.app-preview{border:1px solid #b7cdcf;border-radius:15px;overflow:hidden;box-shadow:0 25px 60px #12384015;background:#fff}.app-preview>a{display:block;cursor:zoom-in}.app-preview img{display:block;width:100%;height:auto}.app-preview figcaption a{display:inline-flex;align-items:center;min-height:44px}.app-preview figcaption{display:flex;justify-content:space-between;gap:15px;padding:12px 20px;font-size:12px;color:var(--muted);border-top:1px solid var(--line)}.app-preview figcaption>span:first-child{color:var(--ink);font-weight:600}.intro-strip{display:flex;align-items:center;justify-content:center;gap:42px;padding:32px 0;color:#3b5962;font-size:14px}.intro-strip b{font-weight:400;color:#8ba6ac}
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.workflow-section{background:var(--soft)}.workflow-layout{display:grid;grid-template-columns:1fr 1.2fr;gap:100px}.workflow-layout .text-link{display:inline-block;margin-top:24px}.steps{list-style:none;margin:0;padding:0}.steps li{display:flex;align-items:flex-start;gap:23px;padding:0 0 32px;position:relative}.steps li:last-child{padding-bottom:0}.steps li:not(:last-child):before{content:"";position:absolute;top:44px;left:21px;bottom:6px;width:1px;background:#c3d9dc}.step-number{flex-shrink:0;width:43px;height:43px;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid #bad6d9;background:white;color:var(--teal);font-size:15px;font-weight:700}.steps h3{font-size:18px;margin:7px 0 12px}.steps p{font-size:14px}.advanced-grid{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center}.advanced-grid figure img{border-radius:14px;aspect-ratio:1.15;object-fit:cover}.advanced-grid figcaption{font-size:11px;color:var(--muted);margin-top:10px}.advanced-grid h2{margin-bottom:22px}.advanced-grid p{font-size:15px}.boundary{border-left:3px solid #92cbd0;padding:0 0 0 18px;margin-top:25px}.boundary strong{font-size:14px}.boundary p{font-size:13px;margin-top:5px}.advanced-grid .actions{gap:18px}
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.faq-layout{display:grid;grid-template-columns:1fr 1.5fr;gap:80px}.faq-list details{border-bottom:1px solid var(--line);padding:19px 0}.faq-list details:first-child{padding-top:0}.faq-list summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:18px;font-size:16px;font-weight:600}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";font-size:24px;font-weight:400;color:var(--teal)}.faq-list details[open] summary:after{content:"−"}.faq-list details p{font-size:14px;margin-top:16px}.open-source{background:#e8f5f4;padding:60px 0}.source-layout{display:flex;align-items:center;justify-content:space-between;gap:45px}.source-layout h2{font-size:30px}.source-layout p:last-child{font-size:14px;margin-top:17px;max-width:650px}.source-layout .button{flex-shrink:0}.footer{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px;padding-block:38px}.footer .brand{font-size:17px}.footer>div{display:flex;gap:22px;flex-wrap:wrap;font-size:12px}.footer>p{font-size:11px;flex-basis:100%;border-top:1px solid var(--line);padding-top:20px}
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@media(max-width:1000px){.workflow-layout{gap:45px}.advanced-grid{gap:35px}.feature-grid{gap:15px}.feature{padding:22px 18px 0}.feature h3{font-size:19px}.execution-art{gap:3px}.execution-art span,.execution-art strong{padding:5px}.download-card{padding:24px 18px}.download-card h3{font-size:23px}.faq-layout{gap:40px}.source-layout{align-items:flex-start;flex-direction:column;gap:24px}}
@media(max-width:760px){.container{width:calc(100% - 36px)}.section{padding:64px 0}.nav{min-height:65px;gap:12px}.brand{font-size:20px}.brand img{width:29px;height:29px}.nav-links{display:none}.compact{font-size:12px;padding:8px 12px}.hero{padding-top:42px}.hero-copy{margin-bottom:30px}.hero-description{font-size:15px;margin-top:20px;line-height:1.9}.hero .actions{gap:18px;margin-top:23px}.hero .text-link{font-size:12px}.hero-note{font-size:11px}.hero .eyebrow{font-size:11px}.app-preview{border-radius:9px}.app-preview figcaption{font-size:12px;padding:2px 12px;align-items:center}.intro-strip{gap:11px;font-size:11px;padding:24px 0}.section-heading{margin-bottom:30px}.section-heading>p:last-child{font-size:14px;margin-top:18px}h2{font-size:30px}.feature-grid,.download-grid{grid-template-columns:1fr}.feature{padding:25px 24px 0}.feature h3{font-size:21px}.feature-number{margin-bottom:16px}.route-art,.direction-art,.execution-art{min-height:105px;padding-top:16px}.execution-art{font-size:12px;gap:10px}.execution-art span,.execution-art strong{padding:7px 12px}.workflow-layout,.advanced-grid,.faq-layout{grid-template-columns:1fr;gap:24px}.advanced-grid figure img{aspect-ratio:1.6}.steps li{gap:17px}.steps h3{font-size:17px}.download-card{padding:27px}.download-card h3{font-size:26px}.download-card ul{margin-bottom:25px}.selector-row{gap:12px}.selector-row p{flex-basis:100%;min-width:0}.safety{gap:12px}.source-layout h2{font-size:26px}.open-source{padding:45px 0}.footer>div{gap:17px}.footer{padding-block:30px}.eyebrow{font-size:10px}.faq-list summary{font-size:15px}dialog{padding:30px 24px}.feature p{font-size:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
.advanced-grid figure img{width:100%;height:auto}
.device-requirement{margin-bottom:24px;font-size:14px}
.compatibility-sources{margin-top:14px}.compatibility-sources summary{min-height:44px;display:flex;align-items:center;gap:8px;color:#8ddbe0;font-size:13px}.compatibility-sources summary::before{content:"+"}.compatibility-sources[open] summary::before{content:"−"}
.aircraft-status{padding:12px 16px;margin:-8px 0 24px;border-left:3px solid #70d7dd;background:#183039;font-size:14px}.aircraft-status.untested{border-color:#d9b478;color:#efdab7}.source-links{display:flex;flex-wrap:wrap;gap:4px 20px}.source-links a{display:inline-flex;align-items:center;min-height:44px}.compatibility-note .source-date{font-size:12px}.download-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr))}.download-card{min-width:0}.download-section :focus-visible{outline-color:#74d7df}.dialog-close{min-width:44px;min-height:44px}dialog h2{padding-right:25px}dialog{max-height:90dvh}.selector-row select{font-size:16px;min-height:48px}.download-meta a,.checksum-copy{min-height:44px;display:inline-flex;align-items:center;font-size:12px}.faq-list summary{min-height:44px}
@media(max-width:760px){html{scroll-padding-top:128px}.nav{flex-wrap:wrap;padding-top:10px;gap:6px 12px}.nav>.button{min-height:44px}.nav-links{display:flex;order:3;flex-basis:100%;justify-content:space-between;gap:12px;font-size:13px;border-top:1px solid var(--line)}.nav-links a{display:flex;align-items:center;min-height:44px}.selector-row{display:grid;grid-template-columns:1fr;gap:8px}.selector-row select{width:100%;min-width:0}.selector-row p{font-size:14px}.aircraft-status{font-size:13px}.download-grid{grid-template-columns:1fr}.hero-note,.diagram-note,.download-status{font-size:12px}.hero .text-link,.text-link{display:inline-flex;align-items:center;min-height:44px}.intro-strip{flex-wrap:wrap;row-gap:4px}.execution-art{flex-wrap:wrap;gap:7px}.execution-art span,.execution-art strong{padding:7px 8px}.footer>div a{display:inline-flex;align-items:center;min-height:44px}.source-links{gap:4px 14px}.compatibility-note p{font-size:14px}dialog{padding:28px 20px}dialog h2{font-size:24px}}