:root {
  color-scheme: dark;
  --bg: #071113;
  --panel: rgba(15, 31, 33, .82);
  --panel-strong: #10292a;
  --line: rgba(186, 238, 223, .15);
  --text: #edf8f4;
  --muted: #9fb4ae;
  --lake: #7de0c7;
  --lake-deep: #2d9f8d;
  --warm: #f0bd78;
  --shadow: 0 24px 70px rgba(0, 0, 0, .3);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(45, 159, 141, .14), transparent 30rem),
    radial-gradient(circle at 85% 40%, rgba(240, 189, 120, .08), transparent 26rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

a { color: inherit; }
.ambient { position: fixed; z-index: -1; border-radius: 999px; filter: blur(90px); opacity: .3; }
.ambient-one { width: 24rem; height: 24rem; left: -10rem; top: 34rem; background: #1f8d7d; }
.ambient-two { width: 20rem; height: 20rem; right: -8rem; top: 8rem; background: #8b6334; }

.topbar, main, footer { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.topbar { height: 92px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 12px; align-items: center; text-decoration: none; font-size: 22px; font-weight: 750; letter-spacing: .08em; }
.brand-mark { width: 44px; fill: none; stroke: var(--lake); stroke-width: 5; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 12px rgba(125, 224, 199, .28)); }
.node-pill { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 13px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 99px; background: rgba(10, 22, 23, .7); }
.node-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--lake); box-shadow: 0 0 12px var(--lake); }

.hero { padding: 108px 0 92px; max-width: 880px; }
.eyebrow { margin: 0 0 18px; color: var(--lake); font-size: 12px; font-weight: 800; letter-spacing: .22em; }
h1 { margin: 0; max-width: 850px; font-size: clamp(50px, 7.5vw, 92px); line-height: .98; letter-spacing: -.055em; font-weight: 760; }
h1 span { color: transparent; background: linear-gradient(110deg, var(--lake), #bcebdc 52%, var(--warm)); background-clip: text; -webkit-background-clip: text; }
.lede { max-width: 680px; margin: 34px 0 0; color: var(--muted); font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 42px; }
.primary-button, .text-button { display: inline-flex; align-items: center; gap: 18px; text-decoration: none; font-weight: 720; }
.primary-button { padding: 16px 22px; border-radius: 13px; color: #051211; background: var(--lake); box-shadow: 0 14px 34px rgba(45, 159, 141, .22); }
.primary-button:hover { transform: translateY(-2px); background: #94ead5; }
.text-button { color: var(--muted); }
.text-button:hover { color: var(--text); }
.primary-button, .route-card { transition: transform .22s ease, border-color .22s ease, background .22s ease; }

.route-section { padding: 70px 0; border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 34px; }
.section-heading h2 { margin: 0; font-size: clamp(32px, 5vw, 52px); letter-spacing: -.04em; }
.section-heading > p { max-width: 390px; margin: 0 0 3px; color: var(--muted); line-height: 1.75; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.route-card { position: relative; min-height: 250px; display: grid; grid-template-columns: 54px 1fr; gap: 22px; padding: 30px; overflow: hidden; text-decoration: none; border: 1px solid var(--line); border-radius: 20px; background: var(--panel); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.route-card::after { content: ""; position: absolute; width: 11rem; height: 11rem; right: -6rem; bottom: -7rem; border-radius: 50%; background: rgba(125, 224, 199, .08); transition: transform .25s ease; }
.route-card:hover { transform: translateY(-4px); border-color: rgba(125, 224, 199, .42); background: rgba(18, 42, 42, .93); }
.route-card:hover::after { transform: scale(1.4); }
.route-card.featured { background: linear-gradient(145deg, rgba(23, 62, 58, .96), rgba(14, 34, 35, .9)); border-color: rgba(125, 224, 199, .3); }
.card-number { position: absolute; top: 23px; right: 25px; color: rgba(237, 248, 244, .23); font: 700 12px/1 ui-monospace, monospace; }
.card-icon { width: 54px; height: 54px; display: grid; place-items: center; border: 1px solid rgba(125, 224, 199, .22); border-radius: 16px; color: var(--lake); background: rgba(125, 224, 199, .08); font-weight: 800; }
.card-copy { align-self: center; }
.card-kicker { margin: 0 0 16px; color: var(--lake); font: 700 10px/1 ui-monospace, monospace; letter-spacing: .16em; }
.card-copy h3 { margin: 0 0 13px; font-size: 25px; letter-spacing: -.025em; }
.card-copy > p:last-child { margin: 0; color: var(--muted); line-height: 1.75; font-size: 15px; }
.card-arrow { position: absolute; right: 26px; bottom: 23px; color: var(--warm); font-size: 18px; }

.architecture-strip { margin: 28px 0 88px; padding: 26px 30px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; border-radius: 18px; border: 1px solid var(--line); background: rgba(8, 20, 21, .62); }
.architecture-strip div { display: flex; flex-direction: column; gap: 7px; }
.architecture-strip span { color: var(--lake); font-size: 12px; font-weight: 750; letter-spacing: .08em; }
.architecture-strip strong { font-size: 15px; font-weight: 600; }
.architecture-strip b { color: var(--warm); }

footer { min-height: 120px; display: flex; justify-content: space-between; align-items: center; gap: 28px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-brand { color: var(--text); font-weight: 650; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; justify-content: flex-end; }
.footer-links a { color: var(--muted); text-underline-offset: 4px; }
.footer-links a:hover { color: var(--lake); }

@media (max-width: 760px) {
  .topbar, main, footer { width: min(100% - 28px, 1180px); }
  .topbar { height: 76px; }
  .node-pill { padding: 8px 10px; font-size: 11px; }
  .hero { padding: 76px 0 70px; }
  h1 { font-size: clamp(44px, 14vw, 66px); }
  .lede { font-size: 16px; }
  .section-heading { align-items: start; flex-direction: column; }
  .card-grid { grid-template-columns: 1fr; }
  .route-card { min-height: 225px; padding: 25px; grid-template-columns: 48px 1fr; gap: 18px; }
  .card-icon { width: 48px; height: 48px; }
  .architecture-strip { grid-template-columns: 1fr; }
  .architecture-strip b { transform: rotate(90deg); justify-self: start; }
  footer { padding: 28px 0; align-items: flex-start; flex-direction: column; }
  .footer-links { justify-content: flex-start; }
}

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