:root {
  color-scheme: dark;
  --bg: #070a0f;
  --panel: #0d121a;
  --panel-2: #111923;
  --line: #243140;
  --text: #f2f6fb;
  --muted: #9aabba;
  --accent: #65f3c6;
  --accent-2: #7aa8ff;
  --warning: #ffc861;
  --danger: #ff7d8b;
  --success: #65f3c6;
  --max: 1180px;
  --radius: 18px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 8%, rgba(101, 243, 198, 0.09), transparent 32rem),
    radial-gradient(circle at 88% 16%, rgba(122, 168, 255, 0.08), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}
a { color: inherit; }
img, svg { max-width: 100%; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; background: var(--accent); color: #05110d; padding: .7rem 1rem; border-radius: 10px; font-weight: 800; }
.skip-link:focus { top: 1rem; }
.container { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(255,255,255,.08); background: rgba(7, 10, 15, .86); backdrop-filter: blur(18px); }
.nav-wrap { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; font-weight: 900; letter-spacing: -.03em; text-decoration: none; }
.brand-mark { width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid rgba(101,243,198,.45); border-radius: 9px; background: linear-gradient(145deg, rgba(101,243,198,.2), rgba(122,168,255,.12)); color: var(--accent); font-size: .78rem; }
.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 650; font-size: .92rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.nav-toggle { display: none; border: 1px solid var(--line); color: var(--text); background: var(--panel); border-radius: 10px; padding: .55rem .75rem; }
.hero { padding: 7rem 0 4.5rem; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr); align-items: center; gap: 4rem; }
.eyebrow, .status-chip { display: inline-flex; align-items: center; gap: .45rem; border: 1px solid rgba(101,243,198,.3); border-radius: 999px; background: rgba(101,243,198,.08); color: var(--accent); padding: .38rem .72rem; font-size: .78rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; margin: 0 0 1rem; }
h1 { font-size: clamp(2.75rem, 6vw, 5.7rem); max-width: 12ch; }
h2 { font-size: clamp(2rem, 4vw, 3.3rem); }
h3 { font-size: 1.22rem; }
.gradient-text { background: linear-gradient(100deg, var(--accent), #d8fff3 48%, var(--accent-2)); color: transparent; -webkit-background-clip: text; background-clip: text; }
.lead { color: #c1ccd7; font-size: clamp(1.05rem, 1.8vw, 1.25rem); max-width: 62ch; }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.7rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .7rem 1rem; border-radius: 11px; border: 1px solid var(--line); background: var(--panel-2); color: var(--text); text-decoration: none; font-weight: 800; cursor: pointer; }
.button:hover { border-color: #45596d; transform: translateY(-1px); }
.button.primary { background: var(--accent); color: #04110d; border-color: var(--accent); }
.button.secondary { background: rgba(122,168,255,.12); border-color: rgba(122,168,255,.38); }
.hero-panel, .card, .checker, .article-card, .table-wrap, .callout { border: 1px solid var(--line); background: linear-gradient(160deg, rgba(17,25,35,.96), rgba(11,16,23,.96)); border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-panel { padding: 1.4rem; }
.status-list { display: grid; gap: .8rem; }
.status-row { display: grid; grid-template-columns: 12px 1fr auto; gap: .75rem; align-items: center; padding: .9rem; border: 1px solid rgba(255,255,255,.07); border-radius: 12px; background: rgba(0,0,0,.14); }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.dot.good { background: var(--success); box-shadow: 0 0 20px rgba(101,243,198,.7); }
.dot.warn { background: var(--warning); }
.dot.bad { background: var(--danger); }
.status-row strong { display: block; }
.status-row small { color: var(--muted); }
.metric-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 1.2rem; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--line); }
.metric { background: var(--panel); padding: .9rem; }
.metric strong { display: block; color: var(--accent); font-size: 1.1rem; }
.metric span { color: var(--muted); font-size: .78rem; }
section { padding: 4.5rem 0; }
.section-muted { border-block: 1px solid rgba(255,255,255,.06); background: rgba(255,255,255,.018); }
.section-head { max-width: 760px; margin-bottom: 2rem; }
.section-head p, .muted { color: var(--muted); }
.checker { padding: clamp(1.2rem, 3vw, 2rem); display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .8fr); gap: 1.3rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { display: grid; gap: .42rem; }
.field.full { grid-column: 1 / -1; }
label { color: #dbe5ee; font-weight: 750; font-size: .9rem; }
select, input[type="text"] { width: 100%; min-height: 46px; border-radius: 10px; border: 1px solid var(--line); background: #080d13; color: var(--text); padding: .65rem .75rem; font: inherit; }
.checkbox-label { display: flex; align-items: center; gap: .65rem; color: var(--muted); font-weight: 650; }
.checker-result { border: 1px solid rgba(122,168,255,.28); border-radius: 14px; padding: 1.2rem; background: rgba(122,168,255,.065); min-height: 100%; }
.checker-result[data-tone="good"] { border-color: rgba(101,243,198,.35); background: rgba(101,243,198,.06); }
.checker-result[data-tone="warn"] { border-color: rgba(255,200,97,.35); background: rgba(255,200,97,.06); }
.checker-result[data-tone="bad"] { border-color: rgba(255,125,139,.35); background: rgba(255,125,139,.06); }
.result-label { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-size: .74rem; font-weight: 850; }
.result-route { color: var(--accent); font-size: 1.15rem; font-weight: 850; margin: .35rem 0 .7rem; }
.result-notes { margin: 0; padding-left: 1.15rem; color: #c6d1dc; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.card, .article-card { padding: 1.25rem; }
.card p, .article-card p { color: var(--muted); }
.card a, .article-card a { color: var(--accent); text-decoration: none; font-weight: 800; }
.card a:hover, .article-card a:hover { text-decoration: underline; }
.kicker { color: var(--accent-2); font-size: .77rem; font-weight: 850; letter-spacing: .07em; text-transform: uppercase; }
.route-map { display: grid; gap: .8rem; }
.route { display: grid; grid-template-columns: 130px 1fr auto; gap: 1rem; align-items: center; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: 13px; background: var(--panel); }
.route-code { color: var(--accent); font-weight: 900; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.tag { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: .25rem .55rem; color: var(--muted); font-size: .75rem; font-weight: 750; white-space: nowrap; }
.tag.official { color: var(--accent); border-color: rgba(101,243,198,.35); }
.tag.community { color: var(--warning); border-color: rgba(255,200,97,.35); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: .9rem 1rem; text-align: left; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }
tr:last-child td { border-bottom: 0; }
.page-hero { padding: 5.5rem 0 2.5rem; }
.page-hero h1 { max-width: 17ch; font-size: clamp(2.5rem, 5vw, 4.7rem); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .45rem; color: var(--muted); font-size: .86rem; margin-bottom: 1rem; }
.breadcrumbs a { color: var(--accent); text-decoration: none; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 2rem; align-items: start; }
.prose { max-width: 800px; }
.prose h2 { margin-top: 2.7rem; font-size: 2rem; }
.prose h3 { margin-top: 2rem; }
.prose p, .prose li { color: #c4cfda; }
.prose a { color: var(--accent); }
.prose code { color: #d8fff3; background: #111a22; border: 1px solid var(--line); padding: .12rem .3rem; border-radius: 5px; }
.prose pre { overflow-x: auto; background: #070b10; border: 1px solid var(--line); border-radius: 12px; padding: 1rem; }
.prose pre code { background: transparent; border: 0; padding: 0; }
.toc { position: sticky; top: 92px; padding: 1.1rem; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.toc strong { display: block; margin-bottom: .65rem; }
.toc a { display: block; color: var(--muted); text-decoration: none; padding: .27rem 0; font-size: .88rem; }
.toc a:hover { color: var(--text); }
.callout { padding: 1rem 1.1rem; margin: 1.5rem 0; box-shadow: none; }
.callout strong { color: var(--text); }
.callout.warning { border-color: rgba(255,200,97,.35); background: rgba(255,200,97,.06); }
.callout.danger { border-color: rgba(255,125,139,.35); background: rgba(255,125,139,.06); }
.callout.good { border-color: rgba(101,243,198,.35); background: rgba(101,243,198,.06); }
.filter-row { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1rem; }
.filter-button { border: 1px solid var(--line); background: var(--panel); color: var(--muted); border-radius: 999px; padding: .45rem .75rem; cursor: pointer; font-weight: 750; }
.filter-button.active { color: #04110d; background: var(--accent); border-color: var(--accent); }
.comparison-tabs { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1rem; }
.comparison-card { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow); }
.comparison-stage { --comparison-position: 50%; position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #030507; touch-action: pan-y; }
.comparison-stage:focus-within { outline: 2px solid var(--accent); outline-offset: 3px; }
.comparison-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; user-select: none; pointer-events: none; }
.comparison-image-on { clip-path: inset(0 0 0 var(--comparison-position)); }
.comparison-label { position: absolute; top: 1rem; z-index: 3; padding: .35rem .6rem; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; background: rgba(3,5,7,.72); backdrop-filter: blur(8px); font-size: .72rem; font-weight: 900; letter-spacing: .06em; }
.comparison-label-off { left: 1rem; }
.comparison-label-on { right: 1rem; color: var(--accent); border-color: rgba(101,243,198,.45); }
.comparison-divider { position: absolute; z-index: 3; top: 0; bottom: 0; left: var(--comparison-position); width: 2px; background: rgba(255,255,255,.9); transform: translateX(-1px); pointer-events: none; }
.comparison-divider span { position: absolute; left: 50%; top: 50%; display: grid; place-items: center; width: 42px; height: 42px; transform: translate(-50%,-50%); border-radius: 50%; background: var(--accent); color: #04110d; border: 3px solid #fff; font-weight: 950; box-shadow: 0 6px 24px rgba(0,0,0,.4); }
.comparison-range { position: absolute; z-index: 4; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }
.comparison-card figcaption { display: grid; grid-template-columns: auto 1fr; gap: .35rem 1rem; align-items: baseline; padding: 1rem 1.15rem; }
.comparison-card figcaption strong { color: var(--accent); }
.comparison-card figcaption span { color: #c4cfda; }
.comparison-card figcaption small { grid-column: 1 / -1; color: var(--muted); }
.comparison-card figcaption a { color: var(--accent); }
[hidden] { display: none !important; }
details { border-top: 1px solid var(--line); padding: 1rem 0; }
details:last-child { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 800; }
details p { color: var(--muted); }
.site-footer { border-top: 1px solid rgba(255,255,255,.08); padding: 2.4rem 0; margin-top: 3rem; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 1rem; }
.footer-links a { color: var(--muted); text-decoration: none; }
.legal { color: #768695; font-size: .78rem; max-width: 780px; }
@media (max-width: 900px) { .hero-grid, .checker, .article-layout { grid-template-columns: 1fr; } .hero { padding-top: 5rem; } .hero-panel { max-width: 680px; } .toc { position: static; } .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 680px) { .nav-toggle { display: inline-flex; } .nav-links { display: none; position: absolute; left: 1rem; right: 1rem; top: 62px; flex-direction: column; align-items: stretch; padding: 1rem; background: #090e14; border: 1px solid var(--line); border-radius: 14px; } .nav-links.open { display: flex; } .form-grid, .grid-3, .grid-2, .footer-grid { grid-template-columns: 1fr; } .route { grid-template-columns: 1fr; gap: .35rem; } .metric-strip { grid-template-columns: 1fr; } .comparison-card figcaption { grid-template-columns: 1fr; } .comparison-card figcaption small { grid-column: auto; } .comparison-label { top: .6rem; } .comparison-label-off { left: .6rem; } .comparison-label-on { right: .6rem; } .footer-links { justify-content: flex-start; } section { padding: 3.5rem 0; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }