:root {
  color-scheme: dark;
  --ink: #f2f6ef;
  --muted: #9da9a2;
  --line: rgba(211, 255, 226, 0.13);
  --panel: rgba(13, 27, 21, 0.76);
  --green: #8effc1;
  --lime: #f3ff99;
  --bg: #07120e;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 70% 8%, rgba(60, 180, 117, 0.16), transparent 28rem),
    radial-gradient(circle at 5% 45%, rgba(243, 255, 153, 0.05), transparent 30rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.18;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

button, input { font: inherit; }

.page-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 92px;
  border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); font-weight: 760; letter-spacing: -0.03em; text-decoration: none; }
.brand-mark { width: 25px; height: 25px; border: 2px solid var(--green); border-radius: 50% 50% 50% 10%; transform: rotate(-18deg); box-shadow: 0 0 25px rgba(142,255,193,.22); }
.status { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.status span { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 14px var(--green); }

.hero { padding: 108px 0 82px; max-width: 850px; }
.eyebrow, .section-label { margin: 0 0 22px; color: var(--green); font-size: 12px; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { margin: 0; font-size: clamp(58px, 8.4vw, 112px); line-height: .89; letter-spacing: -.075em; font-weight: 760; }
.hero h1 span { color: transparent; -webkit-text-stroke: 1px rgba(242,246,239,.55); }
.intro { max-width: 650px; margin: 38px 0 0; color: var(--muted); font-size: clamp(18px, 2vw, 23px); line-height: 1.55; letter-spacing: -.02em; }

.router-card { padding: 34px; overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: linear-gradient(145deg, rgba(18, 38, 29, .84), rgba(7, 18, 14, .9)); box-shadow: 0 35px 90px rgba(0,0,0,.28); }
.router-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; }
.router-head h2 { margin: 0; font-size: clamp(30px, 4vw, 46px); letter-spacing: -.045em; }
.section-label { margin-bottom: 10px; }
.updated { margin: 0; color: var(--muted); font-size: 13px; }

.tabs { display: flex; gap: 8px; margin: 32px 0 10px; padding-bottom: 14px; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab { flex: 0 0 auto; padding: 10px 14px; color: var(--muted); border: 1px solid transparent; border-radius: 999px; background: transparent; cursor: pointer; transition: .2s ease; }
.tab:hover { color: var(--ink); border-color: var(--line); }
.tab.active { color: #07120e; background: var(--green); }

.chart-wrap { position: relative; margin-top: 12px; padding: 14px 0 0; }
.chart { display: block; width: 100%; height: auto; overflow: visible; }
.grid line { stroke: rgba(211,255,226,.09); stroke-width: 1; }
.frontier { fill: none; stroke: url(#frontier-gradient); stroke-width: 4; stroke-linecap: round; filter: url(#glow); }
.muted-points circle { fill: #34463d; stroke: #60736a; stroke-width: 1; }
.frontier-points circle { fill: #0c1a14; stroke: var(--green); stroke-width: 3; }
.selection { transition: transform .32s cubic-bezier(.2,.8,.2,1); }
.selection-ring { fill: rgba(142,255,193,.08); stroke: rgba(142,255,193,.45); stroke-width: 2; }
.selection-dot { fill: var(--lime); filter: url(#glow); }
.axis-copy text { fill: #78867f; font-size: 14px; }
.quality-label { position: absolute; top: 32px; left: 5px; color: #78867f; font-size: 13px; transform: rotate(-90deg) translateX(-100%); transform-origin: top left; }
.quality-label span { color: var(--green); }

.slider-panel { width: min(720px, 88%); margin: -8px auto 20px; padding: 16px 20px 12px; border: 1px solid var(--line); border-radius: 16px; background: rgba(6, 16, 12, .88); backdrop-filter: blur(16px); }
.slider-copy { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; }
.slider-copy span:last-child { text-align: right; }
.slider-copy strong { color: var(--ink); }
input[type="range"] { width: 100%; margin: 13px 0 5px; accent-color: var(--green); cursor: pointer; }

.recommendation { display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 16px; margin-top: 22px; padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: rgba(6, 16, 12, .72); }
.model-icon { display: grid; place-items: center; width: 44px; height: 44px; color: #07120e; border-radius: 13px; background: linear-gradient(135deg, var(--green), var(--lime)); font-weight: 900; }
.recommendation-main p { margin: 0 0 4px; color: var(--muted); font-size: 12px; }
.recommendation-main h3 { margin: 0; font-size: 18px; }
.recommendation-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 3px; }
.recommendation-meta span { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.recommendation-meta strong { color: var(--green); font-size: 13px; }
.why-button { padding: 10px 12px; color: var(--ink); border: 0; background: transparent; cursor: pointer; }
.why-button span { color: var(--green); }
.why-panel { margin-top: 10px; padding: 18px 20px; color: var(--muted); border-left: 2px solid var(--green); background: rgba(142,255,193,.04); line-height: 1.6; }
.why-panel p { margin: 0; }

.coming-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 84px; border: 1px solid var(--line); border-radius: 22px; overflow: hidden; background: var(--line); }
.coming-grid article { min-height: 255px; padding: 28px; background: #091610; }
.coming-grid p { margin: 0 0 76px; color: var(--green); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.coming-grid h2 { margin: 0 0 12px; font-size: 24px; letter-spacing: -.035em; }
.coming-grid span { color: var(--muted); line-height: 1.55; }

.cta { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin: 84px 0; padding: 48px; border-radius: 22px; color: #07120e; background: linear-gradient(130deg, var(--green), var(--lime)); }
.cta .eyebrow { color: #1c5939; }
.cta h2 { margin: 0; font-size: clamp(36px, 5vw, 64px); letter-spacing: -.06em; }
.cta code { padding: 13px 16px; border-radius: 10px; background: rgba(7,18,14,.12); white-space: nowrap; }

footer { display: flex; justify-content: space-between; gap: 24px; padding: 30px 0 48px; color: #718078; border-top: 1px solid var(--line); font-size: 12px; }

@media (max-width: 760px) {
  .page-shell { width: min(100% - 24px, 1180px); }
  .hero { padding: 76px 4px 60px; }
  .router-card { padding: 20px 14px; border-radius: 18px; }
  .router-head { align-items: flex-start; flex-direction: column; }
  .chart { min-width: 640px; transform: translateX(-28px); }
  .chart-wrap { overflow: hidden; }
  .quality-label { display: none; }
  .slider-panel { width: calc(100% - 12px); margin-top: -2px; }
  .recommendation { grid-template-columns: auto 1fr; }
  .recommendation-meta { align-items: flex-start; padding-left: 60px; }
  .why-button { text-align: left; }
  .coming-grid { grid-template-columns: 1fr; }
  .coming-grid article { min-height: 220px; }
  .coming-grid p { margin-bottom: 54px; }
  .cta { align-items: flex-start; flex-direction: column; padding: 32px 24px; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}