/* Self-hosted assets and system fonts only; the site needs no JavaScript. */
:root {
  color-scheme: light;
  --forest: #152820;
  --forest-deep: #102019;
  --paper: #f7f5ef;
  --ink: #22352b;
  --muted: #586258;
  --line: #d8dcd1;
  --gold: #e2c591;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 1.5rem; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.65 var(--font); }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: .25em; }
button { font: inherit; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { line-height: 1.15; }
h1, h2 { font-weight: 550; letter-spacing: -.055em; }
h2 { font-size: clamp(2.1rem, 3.6vw, 3.3rem); }
h3 { font-size: 1.25rem; font-weight: 600; letter-spacing: -.025em; }
p { text-wrap: pretty; }
code { font: .88em/1.6 var(--mono); overflow-wrap: anywhere; }
:focus-visible { outline: 3px solid #9a631f; outline-offset: 5px; }
.hero :focus-visible, .download-section :focus-visible, .site-header :focus-visible { outline-color: var(--gold); }
[id] { scroll-margin-top: 1rem; }
.container { width: min(1160px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; left: 1rem; top: -8rem; z-index: 10; padding: .75rem 1rem; background: var(--paper); color: var(--forest); }
.skip-link:focus { top: 1rem; }
.site-header { background: var(--forest); color: var(--paper); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-block: 22px; border-bottom: 1px solid #ffffff24; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.brand img { object-fit: contain; }
.brand span { font-size: .78rem; line-height: 1.35; letter-spacing: .11em; text-transform: uppercase; }
.brand strong { display: block; font-weight: 650; }
nav { display: flex; align-items: center; gap: 30px; font-size: .83rem; }
nav a { padding-block: .5rem; text-decoration: none; }
nav a:hover { text-decoration: underline; }
nav .nav-download { padding: .6rem 1rem; border: 1px solid #ffffff45; border-radius: 3px; }
.nav-download span { margin-left: 12px; }
.hero { padding-block: 72px 80px; background: var(--forest); color: var(--paper); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 70px; align-items: center; }
.eyebrow { font: 500 .68rem/1.5 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.hero .eyebrow { color: #d3d8c7; display: flex; align-items: center; gap: 12px; }
.small-rule { width: 24px; height: 1px; background: var(--gold); }
h1 { font-size: clamp(3.2rem, 5.6vw, 5.25rem); line-height: 1.04; margin-block: 22px 26px; }
h1 em { color: var(--gold); font-family: Georgia, "Times New Roman", serif; font-weight: 400; }
.hero-description { max-width: 480px; color: #d1d8ce; font-size: 1.04rem; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 22px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 50px; border: 1px solid transparent; border-radius: 3px; padding: .8rem 1.2rem; font-size: .87rem; font-weight: 650; text-decoration: none; line-height: 1.4; }
.button-primary { background: var(--gold); color: var(--forest-deep); }
.button-primary:hover { background: #f3d7a3; }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; font-size: .82rem; text-decoration: underline; }
.text-link:hover { text-decoration-thickness: 2px; }
.hero-note { margin-top: 18px; color: #c0c9bc; font-size: .75rem; }
.field-diagram { min-width: 0; border: 1px solid #e2c59150; border-radius: 5px; background: var(--forest-deep); box-shadow: 0 20px 60px #07120b35; }
.diagram-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 15px 20px; border-bottom: 1px solid #ffffff20; color: #c5cdbf; font: .6rem/1.5 var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.diagram-landscape { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; min-height: 275px; background: linear-gradient(#10201930, #10201990), url("/assets/terrain.svg") center / cover; }
.compass { position: absolute; right: 22px; top: 18px; text-align: center; font: .7rem/1.7 var(--mono); color: #c2cdbb; }
.diagram-mark { width: 210px; height: auto; }
.landscape-label { font: .65rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: .14em; color: #e2c591; }
.connection-path { display: flex; align-items: center; justify-content: center; gap: 16px; border-top: 1px solid #ffffff20; padding: 23px 20px; }
.connection-node { display: flex; flex: 1; flex-direction: column; align-items: center; gap: 10px; text-align: center; color: #dddcc8; font-size: .72rem; }
.connection-node svg { color: #bdbb9a; }
.connection-line { flex: 0 1 65px; display: flex; align-items: center; gap: 7px; font: .58rem/1 var(--mono); color: #b9c2b0; }
.connection-line::before, .connection-line::after { content: ""; flex: 1; min-width: 10px; height: 1px; background: #899981; }
figcaption { border-top: 1px solid #ffffff20; padding: 12px 20px; color: #b3bfae; font-size: .66rem; line-height: 1.6; }
.principles { background: #eaece3; border-bottom: 1px solid var(--line); }
.principles-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; padding-block: 22px; }
.principles p { font-size: .78rem; font-weight: 550; }
.principles span { color: #53614d; font: .68rem var(--mono); margin-right: 12px; }
.section { padding-block: 88px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 60px; margin-bottom: 38px; }
.section-heading .eyebrow, .installation .eyebrow, .about .eyebrow, .faq .eyebrow { margin-bottom: 16px; color: #5c6b54; }
.section-heading > p { max-width: 430px; color: var(--muted); font-size: .9rem; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.feature-card { padding-top: 22px; border-top: 1px solid #a6b09d; }
.feature-number { font: .62rem/1.5 var(--mono); letter-spacing: .07em; color: #65715d; }
.feature-card h3 { margin-block: 26px 14px; }
.feature-card p { color: var(--muted); font-size: .85rem; }
.transfer-highlight { margin-top: 36px; padding: 28px; border-left: 3px solid #7a8a60; background: #e8ecdf; }
.transfer-highlight .eyebrow { color: #526247; margin-bottom: 12px; }
.transfer-highlight h3 { font-size: 1.6rem; margin-bottom: 12px; }
.transfer-highlight > p:last-child { max-width: 780px; color: var(--muted); font-size: .9rem; }
.workflow-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 34px; }
.workflow-card { padding: 28px; border: 1px solid var(--line); border-radius: 3px; }
.workflow-card h3 { margin-bottom: 16px; }
.workflow-card p { color: var(--muted); font-size: .86rem; }
.workflow-card p + p { margin-top: 14px; }
.local-note { margin-top: 40px; display: flex; align-items: flex-start; gap: 20px; padding: 25px 28px; border: 1px solid var(--line); background: #eef0e7; border-radius: 3px; }
.note-symbol { color: #5e7252; font: 1.8rem/1 var(--mono); }
.local-note h3 { font-size: .94rem; margin-bottom: 6px; }
.local-note p { color: var(--muted); font-size: .83rem; }
.requirements-section { background: #eeeee5; border-block: 1px solid var(--line); }
.compatibility-card { display: grid; grid-template-columns: 1.25fr 1fr; gap: 36px; margin-bottom: 26px; padding: 28px; border: 1px solid #ccd2c2; background: #e5e9dc; border-radius: 3px; }
.compatibility-card .eyebrow { color: #546249; margin-bottom: 14px; }
.compatibility-card h3 { margin-bottom: 14px; }
.compatibility-card p:not(.eyebrow) { color: var(--muted); font-size: .85rem; }
.radio-models { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0 0 14px; }
.radio-models li { padding: 5px 10px; border: 1px solid #b4bea5; background: var(--paper); color: var(--ink); font: .8rem/1.5 var(--mono); }
.compatibility-card .compatibility-note { font-size: .75rem; }
.platform-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.platform-card { padding: 27px; border: 1px solid #ccd2c2; background: var(--paper); border-radius: 3px; }
.platform-card .eyebrow { font-size: .61rem; color: #66705e; }
.platform-card h3 { font-size: 1.5rem; margin-block: 20px 12px; }
.platform-card > p:not(.eyebrow) { min-height: 3.3em; font-size: .83rem; color: var(--muted); }
.package-type { display: block; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); font: .65rem/1.6 var(--mono); color: #54624c; }
.setup-requirements { margin-top: 34px; display: grid; grid-template-columns: 1fr 2fr; gap: 40px; }
.setup-requirements h3 { font-size: 1rem; padding-top: 5px; }
.setup-requirements ul { margin: 0; padding-left: 18px; font-size: .85rem; color: var(--muted); }
.setup-requirements li + li { margin-top: 10px; }
.section-note { margin-top: 25px; padding-top: 20px; border-top: 1px solid #ccd2c2; color: #5d6757; font-size: .75rem; }
.installation { display: grid; grid-template-columns: 1fr 1.4fr; gap: 100px; }
.installation-intro > p:last-child { margin-top: 24px; color: var(--muted); font-size: .88rem; max-width: 330px; }
.steps { margin: 0; padding: 0; list-style: none; counter-reset: setup; }
.steps li { counter-increment: setup; position: relative; padding: 0 0 26px 52px; }
.steps li + li { padding-top: 26px; border-top: 1px solid var(--line); }
.steps li::before { content: "0" counter(setup); position: absolute; left: 0; top: 0; font: .75rem/1.7 var(--mono); color: #617454; }
.steps li + li::before { top: 26px; }
.steps li:last-child { padding-bottom: 0; }
.steps h3 { font-size: 1rem; margin-bottom: 10px; }
.steps p { font-size: .85rem; color: var(--muted); }
.download-section { background: var(--forest); color: var(--paper); padding-block: 70px; }
.download-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 90px; align-items: center; }
.download-section .eyebrow { color: var(--gold); margin-bottom: 18px; }
.download-section h2 { font-size: clamp(2rem, 3.4vw, 2.9rem); }
.download-section h2 + p { color: #c6d0c0; font-size: .9rem; margin-top: 24px; max-width: 460px; }
.download-panel { border: 1px solid #ffffff32; padding: 28px; border-radius: 3px; background: #10201980; }
.availability { display: flex; align-items: center; gap: 9px; color: var(--gold); font: .65rem/1.6 var(--mono); }
.availability span { width: 7px; height: 7px; border: 1px solid var(--gold); border-radius: 50%; flex-shrink: 0; }
.button-unavailable { width: 100%; color: #dbdccf; background: #ffffff0d; border-color: #ffffff45; cursor: not-allowed; opacity: 1; margin-block: 20px 14px; }
#download-explanation { color: #c0c9b9; font-size: .76rem; }
.download-panel .text-link { margin-top: 12px; color: #e3d5b8; }
.about { display: grid; grid-template-columns: 1fr 1.6fr; gap: 80px; border-bottom: 1px solid var(--line); }
.about-copy { max-width: 540px; color: var(--muted); }
.about-copy p + p { margin-top: 18px; }
.about-callsign { color: var(--ink); font-family: var(--mono); }
.about-link { color: var(--ink); max-width: 100%; overflow-wrap: anywhere; }
.faq { display: grid; grid-template-columns: 1fr 1.6fr; gap: 80px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; position: relative; list-style: none; padding: 20px 34px 20px 0; font-size: .91rem; font-weight: 550; line-height: 1.5; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; font: 1.1rem/1.3 var(--mono); color: #5c7250; }
details[open] summary::after { content: "−"; }
details p { padding: 0 30px 22px 0; color: var(--muted); font-size: .85rem; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; padding-block: 28px; font-size: .75rem; color: var(--muted); }
.footer-brand { font-weight: 650; color: var(--ink); }
.footer-inner a { margin-left: auto; min-height: 44px; display: inline-flex; align-items: center; gap: 12px; }
.footer-inner a + a { margin-left: 0; }
.error-page { min-height: 100svh; display: grid; place-items: center; padding: 32px; }
.error-content { max-width: 560px; }
.error-content h1 { font-size: 3rem; }
.error-content p { margin-bottom: 24px; }
@media (max-width: 1050px) {
  .container { width: calc(100% - 64px); }
  .hero-grid { gap: 36px; }
  .hero-actions { gap: 12px 20px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px; }
  .section-heading { gap: 35px; }
  .section-heading > p { max-width: 360px; }
  .installation { gap: 55px; }
  .download-grid { gap: 45px; }
  .platform-card { padding: 22px; }
}
@media (max-width: 760px) {
  .header-inner { gap: 16px; }
  nav { gap: 18px; }
  nav a:not(.nav-download) { display: none; }
  .hero { padding-block: 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-copy { max-width: 540px; }
  h1 { font-size: clamp(3.3rem, 9vw, 4.6rem); }
  .hero-description { max-width: 540px; }
  .field-diagram { max-width: 540px; width: 100%; }
  .diagram-landscape { min-height: 240px; }
  .principles-inner { justify-content: flex-start; gap: 10px 26px; }
  .section { padding-block: 58px; }
  .section-heading { display: block; margin-bottom: 30px; }
  .section-heading > p { max-width: 540px; margin-top: 22px; }
  .platform-grid { grid-template-columns: 1fr; gap: 14px; }
  .workflow-grid, .compatibility-card { grid-template-columns: 1fr; gap: 24px; }
  .platform-card { padding: 24px; }
  .platform-card h3 { margin-block: 12px; }
  .platform-card > p:not(.eyebrow) { min-height: 0; }
  .package-type { margin-top: 18px; }
  .setup-requirements { grid-template-columns: 1fr; gap: 18px; }
  .installation, .download-grid, .about, .faq { grid-template-columns: 1fr; gap: 32px; }
  .installation-intro > p:last-child { max-width: 540px; }
  .download-section { padding-block: 54px; }
  .download-section h2 + p { max-width: 540px; }
  .download-panel { max-width: 540px; }
  .footer-inner { gap: 10px 22px; }
}
@media (max-width: 460px) {
  .container { width: calc(100% - 40px); }
  .header-inner { padding-block: 18px; }
  .brand { gap: 8px; }
  .brand img { width: 40px; height: auto; }
  .brand span { font-size: .62rem; letter-spacing: .07em; }
  nav .nav-download { padding: .6rem .7rem; font-size: .7rem; }
  .nav-download span { display: none; }
  h1 { font-size: clamp(2.9rem, 12vw, 3.6rem); }
  .hero-description { font-size: .94rem; }
  .hero .eyebrow { font-size: .6rem; letter-spacing: .08em; }
  .hero-actions { gap: 12px; }
  .hero-actions .button { width: 100%; justify-content: space-between; }
  .diagram-top { padding: 12px 16px; font-size: .52rem; }
  .diagram-landscape { min-height: 230px; }
  .connection-path { gap: 10px; padding: 20px 12px; }
  .connection-node { font-size: .65rem; }
  .feature-grid { grid-template-columns: 1fr; gap: 28px; }
  .feature-card h3 { margin-top: 18px; }
  .workflow-card, .compatibility-card, .transfer-highlight { padding: 22px 18px; }
  .local-note { gap: 12px; padding: 22px 18px; }
  .download-panel { padding: 23px 18px; }
  .button-unavailable { gap: 10px; font-size: .8rem; padding-inline: 10px; }
  .steps li { padding-left: 40px; }
  .footer-inner > p { flex-basis: 100%; }
  .footer-inner a { margin-left: 0; }
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
@media (forced-colors: active) {
  .button, .field-diagram, .download-panel { border: 1px solid ButtonText; }
  :focus-visible { outline-color: Highlight; }
}