:root {
  --ink: #0d0d0d;
  --ink-2: #3d3d3d;
  --ink-3: #6f6f6f;
  --paper: #f6f4ef;
  --paper-2: #ecebe5;
  --line: #d9d7cf;
  --accent: #1f8a4c;
  --accent-ink: #0f5a30;
  --accent-soft: #e2f2e8;
  --warn-soft: #fdf1dc;
  --warn-ink: #7a4d00;
  --radius: 14px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.015em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); font-weight: 760; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); font-weight: 720; }
h3 { font-size: 1.15rem; font-weight: 680; }
p { margin: 0 0 1em; }
code { font-family: var(--mono); font-size: 0.92em; background: var(--paper-2); padding: 0.1em 0.35em; border-radius: 5px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
section { padding: 72px 0; }
section + section { border-top: 1px solid var(--line); }
.kicker {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: 14px;
}
.lede { font-size: 1.2rem; color: var(--ink-2); max-width: 62ch; }
.muted { color: var(--ink-3); }
.small { font-size: 0.9rem; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(246, 244, 239, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 760; font-size: 1.1rem; color: var(--ink); }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.nav-links { display: flex; gap: 20px; margin-left: auto; font-size: 0.95rem; }
.nav-links a { color: var(--ink-2); }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 720px) { .nav-links { display: none; } }

/* hero */
.hero { padding: 84px 0 64px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.hero-art { display: flex; justify-content: center; }
.hero-art img { width: min(100%, 340px); }
@media (max-width: 820px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
  .hero-art img { width: min(60%, 260px); }
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 14px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px;
  font-weight: 650; font-size: 1rem;
  border: 1.5px solid var(--ink);
  color: var(--ink); background: transparent;
  transition: transform 0.08s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-accent { background: var(--accent); border-color: var(--accent); color: #fff; }
.pill {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 0.78rem; font-weight: 650; letter-spacing: 0.02em;
  background: var(--accent-soft); color: var(--accent-ink);
}
.pill.warn { background: var(--warn-soft); color: var(--warn-ink); }
.pill.neutral { background: var(--paper-2); color: var(--ink-2); }

/* grids and cards */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.card h3 { margin-top: 6px; }
.card .num {
  font-family: var(--mono); font-size: 0.8rem; color: var(--accent-ink);
  letter-spacing: 0.1em;
}
.card ul { padding-left: 1.1em; margin: 0.4em 0 0; }
.card li { margin: 0.25em 0; }
.card .foot { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }

.vignette p { color: var(--ink-2); }
.vignette .with {
  margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line);
  color: var(--ink); font-size: 0.95rem;
}

/* reach + shop tables */
.reach, .shop { overflow-x: auto; }
.reach table, .shop table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: 0.95rem; }
.reach th, .reach td, .shop th, .shop td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.reach th, .shop th { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); background: var(--paper-2); }
.reach tr:last-child td, .shop tr:last-child td { border-bottom: none; }
.reach td:first-child, .shop td:first-child { font-weight: 650; }

/* tentacle cards */
.tentacle { padding-top: 0; overflow: hidden; }
.tentacle > img, .tentacle .img-placeholder {
  width: calc(100% + 48px); max-width: none; margin: 0 -24px 18px; aspect-ratio: 16 / 10; object-fit: cover;
  background: var(--paper-2); border-bottom: 1px solid var(--line);
}
.tentacle .img-placeholder { display: flex; align-items: center; justify-content: center; }
.tentacle .img-placeholder img { width: 38%; border-radius: 18px; box-shadow: 0 16px 30px -18px rgba(0,0,0,0.4); }
.tentacle .pill { margin-top: 2px; }

/* setup panels: technical-manual line drawings */
.setups { margin-top: 28px; }
.setup { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.setup svg {
  display: block; width: 100%; height: auto;
  color: var(--ink); background: #fff;
  border-bottom: 1px solid var(--line);
}
.setup svg .ink { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.setup svg .thin { stroke-width: 1.2; }
.setup svg .view { fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-dasharray: 2 5; stroke-linecap: round; }
.setup svg .sig { fill: none; stroke: var(--accent); stroke-width: 2; stroke-dasharray: 6 6; stroke-linecap: round; }
.setup svg .lbl text {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.09em;
  fill: var(--ink-3); text-anchor: middle;
}
.setup figcaption { padding: 16px 20px 20px; font-size: 0.93rem; color: var(--ink-2); }
.setup figcaption .pill { margin-bottom: 8px; }
.setup.wide { grid-column: 1 / -1; }

/* device pictograms */
.devices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 30px; }
.devices figure {
  margin: 0; padding: 20px 16px 18px; text-align: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
}
.devices svg { display: block; width: 100%; max-width: 150px; height: auto; margin: 0 auto 14px; color: var(--ink); }
.devices svg .ink { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.devices svg .thin { stroke-width: 1.2; }
.devices b { display: block; font-size: 0.98rem; font-weight: 680; }
.devices span {
  display: block; margin-top: 5px;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.05em;
  color: var(--ink-3);
}
.devices .untested { margin-top: 3px; color: var(--warn-ink); }
@media (max-width: 820px) { .devices { grid-template-columns: repeat(2, 1fr); } }

/* diagram strip */
.flow {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 12px; align-items: center;
  background: var(--ink); color: var(--paper); border-radius: var(--radius);
  padding: 28px; margin-top: 28px;
  font-family: var(--mono); font-size: 0.92rem;
}
.flow .node { text-align: center; }
.flow .node b { display: block; font-size: 1.05rem; margin-bottom: 4px; }
.flow .node span { color: #b9b7b0; font-size: 0.82rem; line-height: 1.45; }
.flow .arrow { color: var(--accent); font-size: 1.3rem; }
@media (max-width: 720px) {
  .flow { grid-template-columns: 1fr; }
  .flow .arrow { transform: rotate(90deg); text-align: center; }
}

/* node section */
.node-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 820px) { .node-hero { grid-template-columns: 1fr; } }
.node-hero img { border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.spec { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; font-size: 0.95rem; margin: 18px 0; }
.spec dt { color: var(--ink-3); }
.spec dd { margin: 0; }

/* pricing */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .tiers { grid-template-columns: 1fr; } }
.tier { position: relative; display: flex; flex-direction: column; }
.tier.featured { border-color: var(--ink); box-shadow: 0 20px 50px -30px rgba(0,0,0,0.4); }
.tier .price { font-size: 2rem; font-weight: 760; margin: 6px 0 2px; letter-spacing: -0.02em; }
.tier .price small { font-size: 0.9rem; font-weight: 500; color: var(--ink-3); }
.tier ul { flex: 1; }
.tier li.yes::before { content: "✓ "; color: var(--accent-ink); }
.tier li.no::before { content: "– "; color: var(--ink-3); }
.tier li.no { color: var(--ink-3); }

/* faq */
details { border-top: 1px solid var(--line); padding: 14px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 650; list-style: none; display: flex; justify-content: space-between; }
summary::after { content: "+"; color: var(--ink-3); font-weight: 400; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 0; color: var(--ink-2); }

/* footer */
footer { border-top: 1px solid var(--line); padding: 40px 0 56px; color: var(--ink-3); font-size: 0.9rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px 36px; align-items: center; }
footer a { color: var(--ink-2); }
.status-banner {
  background: var(--warn-soft); color: var(--warn-ink);
  font-size: 0.9rem; text-align: center; padding: 8px 16px;
}

@media (max-width: 600px) {
  .setup svg .lbl text { font-size: 12px; }
  .setup.wide svg .lbl { display: none; }
  .setup.wide svg .ink { stroke-width: 3.4; }
  .setup.wide svg .thin { stroke-width: 2.2; }
  .setup.wide svg .sig { stroke-width: 3.4; stroke-dasharray: 10 10; }
  .setup.wide svg .view { stroke-width: 2.4; stroke-dasharray: 4 9; }
}