:root { color-scheme: dark; --bg: #080e13; --text: #f1f6f9; --muted: #a6b4bf; --accent: #a2d6ee; --line: rgba(208,229,242,.14); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-synthesis: none; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 8rem; background: var(--bg); }
body { margin: 0; color: var(--text); background: radial-gradient(ellipse at 88% 12%, rgba(45,102,139,.14), transparent 40rem), var(--bg); -webkit-font-smoothing: antialiased; overflow-wrap: anywhere; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3, figure, dl { margin: 0; }
h1, h2, h3 { font-weight: 550; }
h1, h2 { letter-spacing: -.045em; text-wrap: balance; }
h3 { letter-spacing: -.02em; }
img { display: block; max-width: 100%; flex-shrink: 0; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; border-radius: .25rem; }
.shell { width: min(calc(100% - 4rem), 1180px); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; top: 1rem; left: 1rem; padding: 1rem; background: var(--text); color: var(--bg); transform: translateY(-200%); border-radius: .6rem; }
.skip-link:focus { transform: none; }
.site-header { position: sticky; z-index: 20; top: 1rem; margin-top: 1rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: 1.15rem; background: rgba(10,17,24,.85); backdrop-filter: blur(24px); }
.brand { display: inline-flex; align-items: center; gap: .7rem; font-size: 1.15rem; font-weight: 600; letter-spacing: -.025em; }
nav { display: flex; flex-wrap: wrap; gap: .25rem; }
nav a { display: inline-flex; align-items: center; min-height: 44px; padding: .65rem .8rem; font-size: .875rem; color: var(--muted); }
nav a:hover, footer a:hover, .parent-link:hover { color: var(--accent); }
.parent-link { font-size: .875rem; }
.hero { display: grid; grid-template-columns: repeat(auto-fit,minmax(min(100%,27rem),1fr)); align-items: center; gap: 4rem; padding-block: 7rem 8rem; }
.eyebrow { margin-bottom: 1.4rem; color: var(--muted); font-size: .875rem; line-height: 1.6; letter-spacing: .1em; text-transform: uppercase; }
h1 { font-size: clamp(3rem,5.3vw,5.1rem); line-height: 1.04; }
h1 span, h2 span { color: var(--accent); }
.intro { max-width: 35rem; margin-top: 1.8rem; font-size: 1.125rem; line-height: 1.75; color: var(--muted); }
.primary-link { display: inline-flex; flex-wrap: wrap; max-width: 100%; align-items: center; gap: 1rem; margin-top: 2rem; min-height: 48px; padding: .9rem 1.3rem; border: 1px solid rgba(162,214,238,.3); border-radius: 999px; background: rgba(162,214,238,.08); }
.primary-link:hover { background: rgba(162,214,238,.16); }
.signal-brief { min-width: 0; border: 1px solid rgba(208,229,242,.2); border-radius: 1.5rem; background: linear-gradient(145deg,rgba(255,255,255,.075),rgba(162,214,238,.025)); box-shadow: inset 0 1px rgba(255,255,255,.09), 0 2rem 5rem rgba(0,0,0,.22); backdrop-filter: blur(18px); }
figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .6rem; padding: 1.2rem 1.5rem; border-bottom: 1px solid var(--line); font-size: .875rem; }
.small-label { font-size: .75rem; color: var(--muted); }
.brief-body { padding: 1.8rem 1.5rem; }
.brief-body .eyebrow { font-size: .75rem; margin-bottom: 1rem; }
.brief-body h2 { font-size: 1.85rem; line-height: 1.25; letter-spacing: -.03em; }
.brief-description { margin-top: 1rem; color: var(--muted); font-size: 1rem; line-height: 1.7; }
.source-row { display: flex; flex-wrap: wrap; gap: .5rem 1rem; margin-top: 1.3rem; padding: .9rem 0; border-block: 1px solid var(--line); font-size: .8125rem; line-height: 1.6; color: var(--muted); }
.source-row span:first-child { color: var(--accent); }
.matrix-title { margin-top: 1.6rem; font-size: .875rem; line-height: 1.6; }
.criteria { margin-top: .7rem; }
.criteria div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1rem; padding-block: .6rem; font-size: .875rem; line-height: 1.6; }
.criteria dd { margin: 0; color: var(--muted); }
.criteria .match { color: var(--accent); }
.example-note { padding: 1rem 1.5rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .75rem; line-height: 1.7; }
.section { padding-block: 6rem; border-top: 1px solid var(--line); }
.section-heading { max-width: 49rem; }
.section-heading h2 { font-size: clamp(2.3rem,4vw,3.7rem); line-height: 1.12; }
.section-heading > p:last-child:not(.eyebrow) { max-width: 43rem; margin-top: 1.5rem; color: var(--muted); font-size: 1.0625rem; line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; margin-top: 3rem; }
.glass-card { padding: 2rem 1.6rem; border: 1px solid var(--line); border-radius: 1.3rem; background: linear-gradient(145deg,rgba(255,255,255,.045),rgba(255,255,255,.01)); }
.card-index { color: var(--muted); font-size: .875rem; line-height: 1.6; }
.glass-card h3 { margin-top: 2.5rem; font-size: 1.45rem; line-height: 1.3; }
.glass-card p, .use-grid p, .workflow p { margin-top: 1rem; color: var(--muted); font-size: 1rem; line-height: 1.75; }
.workflow { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 2rem; margin: 3rem 0 0; padding: 0; list-style: none; }
.step-number { display: grid; width: 2.2rem; height: 2.2rem; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--accent); }
.workflow h3 { margin-top: 1.25rem; font-size: 1.2rem; line-height: 1.4; }
.workflow li > div { min-width: 0; }
.use-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 4rem; margin-top: 3rem; }
.use-grid article { padding-block: 2rem; border-top: 1px solid var(--line); }
.use-grid h3 { margin-top: .8rem; font-size: 1.65rem; line-height: 1.3; }
footer { padding-block: 2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .875rem; line-height: 1.7; }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1.5rem; }
footer .brand { color: var(--text); font-size: 1rem; }
.family-links { align-items: center; gap: .4rem; margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.family-links > span { margin-right: .8rem; font-size: .875rem; }
@media (max-width: 1050px) { .parent-link { display: none; } .hero { gap: 2rem; } .feature-grid { grid-template-columns: 1fr; } .glass-card h3 { margin-top: 1.4rem; } .workflow { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 760px) { .shell { width: calc(100% - 2.5rem); } .site-header { top: .75rem; margin-top: .75rem; gap: .5rem; padding: .7rem .85rem; } .hero { grid-template-columns: 1fr; gap: 3rem; padding-block: 4rem 4.5rem; } h1 { font-size: clamp(2.7rem,8.5vw,4rem); } .signal-brief { max-width: 36rem; } .section { padding-block: 4rem; } .section-heading h2 { font-size: clamp(2.1rem,6.2vw,3rem); } .use-grid { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .site-header nav { width: 100%; justify-content: space-between; border-top: 1px solid var(--line); padding-top: .3rem; margin-top: .3rem; } nav a { padding-inline: .4rem; } .hero { padding-top: 3rem; } h1 { font-size: clamp(2.45rem,10vw,3.3rem); } .eyebrow { letter-spacing: .06em; } figcaption, .brief-body, .example-note { padding-inline: 1.2rem; } .workflow { grid-template-columns: 1fr; } .workflow li { display: flex; gap: 1rem; align-items: flex-start; } .step-number { flex-shrink: 0; } .workflow h3 { margin-top: .1rem; } .footer-top { align-items: flex-start; flex-direction: column; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }