@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url(/fonts/inter-latin.woff2) format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-latin-400.woff2) format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-latin-500.woff2) format("woff2");
}

:root {
  --paper: #ffffff;
  --ink: #111111;
  --muted: #6b6b6b;
  --rule: #e6e6e6;
  --accent: #6e1010;
  --accent-hover: #851717;
  --card: #f9f9fb;
  --card-border: #e2e2e8;
  --panel: #f3f3f6;
  --code-bg: #f0f0f3;
  --sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
  --col: 960px;
  --pad-x: 24px;
}

[data-theme="dark"] {
  --paper: #000000;
  --ink: #ededed;
  --muted: #888a91;
  --rule: #1e2025;
  --accent: #8b1818;
  --accent-hover: #a82222;
  --card: #0a0a0c;
  --card-border: #23232a;
  --panel: #111114;
  --code-bg: #141418;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.6; }
body { min-height: 100vh; display: flex; flex-direction: column; }

.inner { max-width: var(--col); margin: 0 auto; padding-left: var(--pad-x); padding-right: var(--pad-x); width: 100%; }

/* Navigation */
.top { border-bottom: 1px solid var(--rule); padding: 18px 0; }
.top .inner { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 30px; height: 30px; border-radius: 6px; object-fit: cover; }
.brand-title { display: flex; flex-direction: column; }
.brand-sub { font-family: var(--mono); font-size: 9px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--muted); }
.brand-name { font-weight: 600; font-size: 16px; letter-spacing: -0.2px; }

.nav { display: flex; align-items: center; gap: 20px; font-size: 13px; }
.nav a { color: var(--muted); text-decoration: none; transition: color 150ms ease; }
.nav a:hover, .nav a.is-on { color: var(--ink); }
.theme-toggle { background: transparent; border: 1px solid var(--rule); color: var(--muted); font-family: var(--mono); font-size: 10px; padding: 4px 10px; border-radius: 4px; cursor: pointer; text-transform: uppercase; }
.theme-toggle:hover { color: var(--ink); border-color: var(--ink); }

/* Hero */
.hero { padding: 80px 0 60px; }
.hero-tag { font-family: var(--mono); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; display: inline-block; font-weight: 500; }
.hero-title { font-size: 44px; font-weight: 600; letter-spacing: -1.2px; line-height: 1.15; margin-bottom: 18px; }
.hero-desc { font-size: 18px; color: var(--muted); max-width: 620px; line-height: 1.55; margin-bottom: 36px; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 48px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; font-size: 13px; font-weight: 600; text-decoration: none; border-radius: 6px; transition: all 150ms ease; cursor: pointer; border: none; font-family: var(--sans); }
.btn-primary { background: var(--accent); color: #ffffff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--panel); color: var(--ink); border: 1px solid var(--rule); }
.btn-secondary:hover { border-color: var(--muted); }
.btn-mono { font-family: var(--mono); font-size: 12px; }

/* Interactive Sign In / Join Card */
.sign-card { background: var(--card); border: 1px solid var(--card-border); border-radius: 8px; padding: 32px; max-width: 580px; margin-bottom: 80px; box-shadow: 0 4px 24px rgba(0,0,0,0.04); }
.sign-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.sign-card p { font-size: 13px; color: var(--muted); margin-bottom: 20px; }
.sign-form { display: flex; gap: 10px; margin-bottom: 14px; }
.sign-input { flex: 1; padding: 10px 14px; font-size: 13px; border: 1px solid var(--rule); border-radius: 6px; background: var(--paper); color: var(--ink); font-family: var(--sans); outline: none; }
.sign-input:focus { border-color: var(--accent); }
.sign-status { font-family: var(--mono); font-size: 11px; padding: 10px 12px; border-radius: 4px; display: none; margin-top: 10px; line-height: 1.4; }
.sign-status.ok { background: rgba(34, 197, 94, 0.12); color: #15803d; border: 1px solid rgba(34, 197, 94, 0.25); display: block; }
.sign-status.err { background: rgba(239, 68, 68, 0.12); color: #b91c1c; border: 1px solid rgba(239, 68, 68, 0.25); display: block; }
.sign-direct-token { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--rule); font-size: 12px; color: var(--muted); display: flex; justify-content: space-between; align-items: center; }
.sign-direct-token a { color: var(--accent); text-decoration: none; font-weight: 500; }

/* Telemetry Box */
.telemetry { background: var(--card); border: 1px solid var(--card-border); border-radius: 8px; padding: 22px 26px; margin-bottom: 80px; font-family: var(--mono); font-size: 12px; line-height: 1.8; color: var(--muted); }
.telemetry-header { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--rule); padding-bottom: 10px; margin-bottom: 14px; }
.telemetry-title { color: var(--ink); font-weight: 500; display: flex; align-items: center; gap: 8px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #22c55e; display: inline-block; }
.telemetry-row span { color: var(--ink); font-weight: 500; }

/* Architecture Grid */
.features { margin-bottom: 80px; }
.features-head { margin-bottom: 32px; }
.features-head .section-tag { font-family: var(--mono); font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.features-head h2 { font-size: 28px; font-weight: 600; letter-spacing: -0.5px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.grid-card { background: var(--card); border: 1px solid var(--card-border); border-radius: 8px; padding: 28px; display: flex; flex-direction: column; }
.grid-num { font-family: var(--mono); font-size: 11px; color: var(--accent); font-weight: 500; margin-bottom: 14px; }
.grid-title { font-size: 17px; font-weight: 600; margin-bottom: 10px; letter-spacing: -0.2px; }
.grid-desc { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* Downloads & Deploy */
.downloads { background: var(--panel); border: 1px solid var(--rule); border-radius: 8px; padding: 36px; margin-bottom: 80px; }
.downloads-title { font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.downloads-desc { font-size: 14px; color: var(--muted); margin-bottom: 24px; max-width: 600px; }
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-bottom: 28px; }
.dl-card { background: var(--paper); border: 1px solid var(--card-border); border-radius: 6px; padding: 20px; display: flex; align-items: flex-start; justify-content: space-between; text-decoration: none; color: var(--ink); transition: border-color 150ms ease; }
.dl-card:hover { border-color: var(--accent); }
.dl-info h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.dl-info p { font-size: 12px; color: var(--muted); }
.dl-arrow { color: var(--muted); font-size: 16px; }

.cli-code { background: var(--code-bg); border: 1px solid var(--rule); border-radius: 6px; padding: 14px 18px; font-family: var(--mono); font-size: 12px; color: var(--ink); overflow-x: auto; white-space: nowrap; }

/* Footer */
.foot { border-top: 1px solid var(--rule); padding: 36px 0; margin-top: auto; }
.foot .inner { display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--muted); font-family: var(--mono); }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--ink); }

@media (max-width: 720px) {
  .hero-title { font-size: 32px; }
  .sign-form { flex-direction: column; }
  .foot .inner { flex-direction: column; gap: 12px; align-items: flex-start; }
}