:root {
    color-scheme: dark;
    --ink: #101412;
    --ink-soft: #171d19;
    --panel: #1d2520;
    --line: #344039;
    --paper: #f0f3ed;
    --muted: #a0aaa1;
    --acid: #caff67;
    --mint: #8ce0bd;
    --coral: #ff9b76;
    --content: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; background: var(--ink); color: var(--paper); font: 16px/1.7 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { color: inherit; font: inherit; }
::selection { background: var(--acid); color: var(--ink); }

.skip-link { position: fixed; z-index: 20; top: 8px; left: 8px; padding: 10px 16px; transform: translateY(-150%); background: var(--acid); color: var(--ink); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; z-index: 10; top: 0; border-bottom: 1px solid rgb(240 243 237 / 9%); background: rgb(16 20 18 / 94%); backdrop-filter: blur(16px); }
.header-inner { display: flex; width: min(100% - 36px, var(--content)); min-height: 72px; margin: 0 auto; align-items: center; gap: 30px; }
.brand { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 9px; color: var(--paper); font-size: 14px; font-weight: 850; letter-spacing: .06em; text-decoration: none; }
.brand-mark { display: grid; width: 30px; aspect-ratio: 1; place-items: center; border-radius: 9px 9px 9px 2px; background: var(--acid); color: var(--ink); font-size: 17px; }
.brand-accent { color: var(--acid); }
.primary-nav { display: flex; flex: 1; justify-content: center; gap: 28px; }
.primary-nav a { color: var(--muted); font-size: 14px; text-decoration: none; transition: color .18s ease; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--paper); }
.primary-nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--acid); text-underline-offset: 7px; }
.header-cta { display: inline-flex; min-height: 42px; align-items: center; gap: 12px; padding: 0 15px; border: 1px solid var(--line); border-radius: 4px; color: var(--paper); font-size: 13px; font-weight: 700; text-decoration: none; transition: border-color .18s ease, color .18s ease; }
.header-cta:hover { border-color: var(--acid); color: var(--acid); }
.header-cta span, .btn span { color: var(--acid); }
.menu-toggle { display: none; }

.page-shell { width: min(100% - 36px, var(--content)); margin: 0 auto; }
.breadcrumbs { display: flex; align-items: center; gap: 10px; padding: 22px 0 4px; color: var(--muted); font-size: 13px; }
.breadcrumbs a { text-decoration: none; }
.breadcrumbs a:hover { color: var(--acid); }
.breadcrumbs [aria-current="page"] { color: var(--paper); }
.home-hero { position: relative; display: grid; min-height: 440px; overflow: hidden; align-items: center; margin: 28px 0 90px; padding: 54px clamp(26px, 7vw, 82px); border: 1px solid #37433a; background: radial-gradient(ellipse at 84% 40%, rgb(140 224 189 / 14%), transparent 37%), linear-gradient(120deg, #19211b 0%, #121815 62%, #20291f 100%); }
.hero-copy { position: relative; z-index: 1; max-width: 620px; animation: rise-in .65s ease both; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--mint); font-size: 11px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 14px rgb(202 255 103 / 70%); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 820px; margin-bottom: 16px; font-size: 58px; line-height: 1.04; font-weight: 770; }
.hero-lead { max-width: 570px; margin-bottom: 28px; color: #c5cec5; font-size: 18px; line-height: 1.55; }
.hero-note { margin: 15px 0 0; color: var(--muted); font-size: 12px; }
.hero-aside { position: absolute; top: 50%; right: 10%; width: 270px; aspect-ratio: 1; transform: translateY(-50%); }
.hero-orbit { position: absolute; inset: 12%; border: 1px solid rgb(202 255 103 / 34%); border-radius: 50%; }
.orbit-one { transform: rotate(-28deg) scaleX(.55); }
.orbit-two { inset: 24% 8%; border-color: rgb(140 224 189 / 32%); transform: rotate(34deg) scaleX(.55); }
.hero-number { position: absolute; inset: 0; display: grid; place-items: center; color: var(--acid); font-size: 110px; font-weight: 300; line-height: 1; }
.hero-caption { position: absolute; right: 0; bottom: 8%; color: var(--mint); font-size: 9px; font-weight: 700; letter-spacing: .2em; line-height: 1.8; }
.btn { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 22px; padding: 0 19px; border: 1px solid transparent; border-radius: 4px; font-size: 14px; font-weight: 750; text-decoration: none; transition: transform .18s ease, border-color .18s ease, background-color .18s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--acid); color: var(--ink); }
.btn-primary:hover { background: #dcff9c; }
.btn-primary span { color: var(--ink); }
.btn-outline { border-color: #536057; color: var(--paper); }
.btn-outline:hover { border-color: var(--acid); }

.content-section, .faq-section { padding: 8px 0 62px; }
.section-rule { border-top: 1px solid var(--line); padding-top: 52px; }
.section-heading { display: flex; align-items: baseline; gap: 15px; margin-bottom: 28px; }
.section-index { color: var(--acid); font-size: 12px; font-variant-numeric: tabular-nums; }
h2 { margin-bottom: 0; font-size: 34px; line-height: 1.2; font-weight: 720; }
h3 { margin: 34px 0 14px; font-size: 21px; line-height: 1.3; }
.feature-grid { display: grid; grid-template-columns: minmax(220px, .76fr) minmax(0, 1.24fr); align-items: start; gap: clamp(24px, 5vw, 60px); }
.content-image, .wide-image { margin: 0; overflow: hidden; background: #202922; }
.content-image { border: 1px solid var(--line); }
.content-image img { width: 100%; height: auto; aspect-ratio: 2; object-fit: cover; }
.image-placeholder { display: block; width: 100%; background: repeating-linear-gradient(135deg, #1a211c 0 14px, #202922 14px 28px); }
.prose { color: #c3cbc3; }
.prose p, .article-content p { margin-bottom: 19px; }
.prose .btn { margin-top: 3px; }
.narrow-prose { max-width: 790px; }
.promo-grid { margin-bottom: 24px; }
.promo-callout { color: var(--paper); font-size: 20px; }
.table-wrap { width: 100%; overflow-x: auto; margin: 22px 0; border: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; text-align: left; }
th, td { min-width: 125px; padding: 15px 18px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { background: #1b231e; color: var(--paper); font-size: 13px; font-weight: 700; }
td { color: #c3cbc3; font-size: 14px; }
tbody tr:last-child td { border-bottom: 0; }
td code { color: var(--acid); font-size: 15px; font-weight: 750; }
.copy-button { min-height: 30px; margin-left: 8px; padding: 3px 8px; border: 1px solid #475349; border-radius: 3px; background: transparent; color: var(--muted); cursor: pointer; font-size: 11px; }
.copy-button:hover, .copy-button:focus-visible { border-color: var(--acid); color: var(--acid); }
.detail-list, .benefit-list { display: grid; gap: 12px; margin: 22px 0 0; padding-left: 21px; color: #c3cbc3; }
.detail-list li::marker, .benefit-list li::marker { color: var(--acid); }
.benefit-list { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 50px; row-gap: 16px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-of-type { border-top: 1px solid var(--line); }
.faq-item summary { position: relative; padding: 18px 35px 18px 0; cursor: pointer; font-weight: 650; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { position: absolute; right: 4px; color: var(--acid); content: "+"; font-size: 22px; line-height: 1; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { margin: 0; padding: 0 25px 18px 0; color: var(--muted); }
.related-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 10px 0 76px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.related-links a { display: grid; grid-template-columns: 1fr auto; gap: 3px 16px; padding: 20px 4px; text-decoration: none; }
.related-links a + a { border-left: 1px solid var(--line); padding-left: 24px; }
.related-links a > span:first-child { grid-column: 1; color: var(--muted); font-size: 12px; }
.related-links strong { grid-column: 1; font-size: 15px; }
.related-links a > span:last-child { grid-column: 2; grid-row: 1 / span 2; align-self: center; color: var(--acid); }

.article-hero { padding: 36px 0 35px; }
.article-hero h1 { max-width: 850px; margin-bottom: 18px; font-size: 48px; }
.article-hero .hero-lead { margin-bottom: 0; }
.article-content { max-width: 820px; margin: 0 auto 74px; color: #c3cbc3; font-size: 17px; }
.article-content h2 { margin: 0 0 18px; color: var(--paper); font-size: 32px; }
.article-section { padding-top: 34px; margin-top: 38px; border-top: 1px solid var(--line); }
.article-content h3 { color: var(--paper); }
.article-content strong { color: var(--paper); }
.article-content ol, .article-content ul { padding-left: 25px; }
.article-content li { padding-left: 5px; margin: 0 0 12px; }
.article-content li::marker { color: var(--acid); }
.steps-list { counter-reset: steps; list-style: decimal; }
.steps-list > li { padding-left: 7px; }
.notice { padding: 17px 20px; border-left: 3px solid var(--coral); background: #211f1d; }
.notice strong { color: var(--coral); }
.wide-image { border: 1px solid var(--line); }
.wide-image img { width: 100%; height: auto; object-fit: cover; }
.aviator-heading { padding-top: 35px; }
.aviator-heading .wide-image { margin-top: 26px; }
.secondary-image { margin-top: 30px; }
.secondary-image img { aspect-ratio: 970 / 536; }
.error-page { width: min(100% - 36px, 720px); min-height: 75vh; margin: 0 auto; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; }
.error-page h1 { font-size: clamp(38px, 7vw, 64px); }
.error-page p:not(.eyebrow) { max-width: 550px; color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); background: #0c100e; }
.footer-inner { width: min(100% - 36px, var(--content)); margin: 0 auto; padding: 30px 0 22px; }
.footer-top, .footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.age-mark { display: grid; width: 38px; aspect-ratio: 1; place-items: center; margin: 0; border: 1px solid var(--coral); border-radius: 50%; color: var(--coral); font-size: 13px; font-weight: 750; }
.responsible-block { max-width: 740px; margin: 27px 0 18px; }
.responsible-block strong { color: var(--mint); }
.responsible-block p, .disclaimer { margin: 6px 0; color: var(--muted); font-size: 13px; }
.responsible-block a { color: var(--mint); text-underline-offset: 3px; }
.disclaimer { max-width: 860px; margin: 20px 0; }
.footer-bottom { padding-top: 17px; border-top: 1px solid #29312b; color: #78837a; font-size: 11px; }

@keyframes rise-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; } }

@media (max-width: 760px) {
    .header-inner { min-height: 64px; gap: 13px; }
    .menu-toggle { display: flex; width: 40px; height: 40px; flex-direction: column; justify-content: center; gap: 6px; margin-left: auto; padding: 10px; border: 1px solid var(--line); border-radius: 4px; background: transparent; cursor: pointer; }
    .menu-toggle span { width: 18px; height: 1px; background: var(--paper); }
    .primary-nav { position: absolute; top: 100%; right: 0; left: 0; display: none; flex-direction: column; gap: 0; padding: 8px 18px 14px; border-bottom: 1px solid var(--line); background: var(--ink); }
    .primary-nav.is-open { display: flex; }
    .primary-nav a { padding: 12px 0; border-bottom: 1px solid #252e28; }
    .primary-nav a:last-child { border-bottom: 0; }
    .header-cta { min-height: 38px; gap: 6px; padding: 0 10px; font-size: 12px; }
    .home-hero { min-height: 420px; margin: 20px 0 65px; padding: 45px 27px; }
    .hero-copy { max-width: 510px; }
    .hero-aside { right: -75px; width: 230px; opacity: .35; }
    .hero-caption { display: none; }
    h1 { font-size: 42px; }
    h2 { font-size: 29px; }
    .article-hero h1 { font-size: 40px; }
    .article-content h2 { font-size: 28px; }
    .hero-lead { font-size: 16px; }
    .feature-grid { grid-template-columns: 1fr; gap: 20px; }
    .content-image { max-width: 440px; }
    .benefit-list { grid-template-columns: 1fr; }
    .related-links { margin-bottom: 56px; }
    .related-links a { gap: 3px 8px; }
    .related-links a + a { padding-left: 14px; }
    .article-content { font-size: 16px; }
}

@media (max-width: 420px) {
    .header-inner, .page-shell, .footer-inner { width: min(100% - 28px, var(--content)); }
    .brand { gap: 7px; font-size: 12px; }
    .brand-mark { width: 27px; }
    .header-cta { padding: 0 8px; font-size: 11px; }
    .home-hero { min-height: 400px; padding: 38px 21px; }
    .hero-aside { right: -116px; }
    h1 { font-size: 36px; }
    h2 { font-size: 26px; }
    .article-hero h1 { font-size: 34px; }
    .section-heading { gap: 10px; }
    th, td { padding: 12px; }
    .copy-button { display: block; margin: 5px 0 0; }
    .related-links strong { font-size: 13px; }
    .footer-bottom { align-items: flex-start; flex-direction: column; gap: 4px; }
}