:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #dfe3e8;
  --text: #1c2430;
  --muted: #5d6875;
  --accent: #2f6feb;
  --accent-ink: #1f55c2;
  --accent-weak: #eaf1fe;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--surface);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 1.5rem; }

.button {
  display: inline-block;
  padding: .75rem 1.3rem;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border: 1px solid var(--accent);
}
.button:hover { background: var(--accent-ink); text-decoration: none; }
.button.ghost { background: transparent; color: var(--accent); }
.button.ghost:hover { background: var(--accent-weak); }

/* Header */
.top { border-bottom: 1px solid var(--border); background: var(--surface); }
.top-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 800; font-size: 1.25rem; color: var(--text); letter-spacing: -.01em; }
.logo:hover { text-decoration: none; }
.top-nav { display: flex; gap: 1.5rem; align-items: center; }
.top-nav a:not(.button) { color: var(--muted); }
.top-nav .button { padding: .45rem .95rem; }

/* Hero */
.hero { padding: 4.5rem 0 4rem; background: linear-gradient(180deg, var(--accent-weak), var(--surface)); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; align-items: center; }
.eyebrow { margin: 0 0 .75rem; color: var(--accent); font-weight: 600; font-size: .9rem; text-transform: uppercase; letter-spacing: .06em; }
h1 { font-size: clamp(2rem, 4.2vw, 3rem); line-height: 1.12; margin: 0 0 1.25rem; letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 1.75rem; letter-spacing: -.01em; }
h3 { font-size: 1.1rem; margin: 0 0 .5rem; }
.lead { font-size: 1.15rem; color: var(--muted); margin: 0 0 1.75rem; max-width: 38rem; }
.cta { display: flex; gap: .75rem; flex-wrap: wrap; }
.fine { color: var(--muted); font-size: .9rem; margin: 1rem 0 0; }

/* Flow figure */
.flow {
  margin: 0;
  display: grid;
  grid-template-columns: auto auto auto auto auto;
  align-items: center;
  gap: .6rem;
}
.node {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .9rem 1rem;
  font-weight: 700;
  text-align: center;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
.node small { display: block; font-weight: 400; color: var(--muted); font-size: .78rem; margin-top: .2rem; }
.node.hub { border-color: var(--accent); color: var(--accent); }
.node.targets { list-style: none; margin: 0; text-align: left; font-weight: 500; font-size: .92rem; }
.node.targets li { padding: .12rem 0; }
.arrow { color: var(--muted); font-size: 1.3rem; }

/* Bands */
.band { background: var(--bg); padding: 4rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.steps li { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.steps p { color: var(--muted); margin: 0; }
.step-n {
  display: inline-grid; place-items: center;
  width: 2rem; height: 2rem; border-radius: 50%;
  background: var(--accent-weak); color: var(--accent); font-weight: 700;
  margin-bottom: .75rem;
}

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; padding: 4rem 1.5rem; }
.feature { border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.feature p { color: var(--muted); margin: 0; }

.channels { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.channels li { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.25rem; }
.channels strong { display: block; font-size: 1.05rem; }
.channels span { color: var(--muted); font-size: .92rem; }

.closing { text-align: center; padding: 4.5rem 1.5rem; }
.closing .lead { margin-left: auto; margin-right: auto; }

.foot { border-top: 1px solid var(--border); padding: 1.5rem 0; color: var(--muted); font-size: .92rem; }
.foot-row { display: flex; justify-content: space-between; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .flow { grid-template-columns: 1fr; justify-items: stretch; }
  .arrow { transform: rotate(90deg); justify-self: center; }
  .steps, .features, .channels { grid-template-columns: 1fr; }
  .top-nav a:not(.button) { display: none; }
}