:root {
  /* Graphite and tide teal, the same palette as the app. Dark first. */
  --bg: #111417;
  --bg-alt: #15181c;
  --surface: #1b1f24;
  --text: #e9edef;
  --muted: #9aa5ac;
  --border: #272c33;
  --accent: #4fd1c5;
  --accent-strong: #74ddd3;
  --accent-text: #06201e;
  --http: #6cb4ff;
  --ws: #5fd6e8;
  --mqtt: #b893ff;
  --tls: #f5b74a;
  --ok: #4cd995;
  --glow: rgba(79, 209, 197, 0.16);
  --shadow: 0 30px 70px -20px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.07);
  --check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%234fd1c5' d='M9.5 16.2 5.3 12l-1.4 1.4 5.6 5.6L20.1 8.4 18.7 7z'/%3E%3C/svg%3E");
  --radius: 14px;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", system-ui, sans-serif;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8f9;
    --bg-alt: #eef0f2;
    --surface: #ffffff;
    --text: #14181b;
    --muted: #5a646b;
    --border: #dde1e4;
    --accent: #0b8d87;
    --accent-strong: #08746f;
    --accent-text: #ffffff;
    --http: #1f6fd6;
    --ws: #0f8ea0;
    --mqtt: #7a4fd6;
    --tls: #b7720b;
    --ok: #12935a;
    --glow: rgba(11, 141, 135, 0.14);
    --shadow: 0 30px 60px -20px rgba(20, 30, 35, 0.28), 0 0 0 1px rgba(20, 30, 35, 0.08);
    --check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%230b8d87' d='M9.5 16.2 5.3 12l-1.4 1.4 5.6 5.6L20.1 8.4 18.7 7z'/%3E%3C/svg%3E");
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
kbd { font: 600 0.85em var(--sans); background: var(--surface); border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px; padding: 0.05em 0.4em; color: var(--text); white-space: nowrap; }
code { font-family: var(--mono); font-size: 0.88em; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 6px; padding: 0.1em 0.35em; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0; }
h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 750; }
h1 em { font-style: normal; color: var(--accent); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 700; max-width: 22ch; }
h3 { font-size: 1.1rem; font-weight: 650; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.center h2, .center .sub { margin-left: auto; margin-right: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; border: 1px solid transparent;
  font: 600 1rem/1 var(--sans); cursor: pointer; white-space: nowrap;
  transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-primary:hover { background: var(--accent-strong); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--muted); }
.btn-small { padding: 8px 14px; font-size: 0.9rem; background: var(--accent); color: var(--accent-text); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: default; transform: none; }

/* Hero */
.hero {
  padding: 72px 0 40px; text-align: center; overflow: hidden;
  background:
    radial-gradient(60% 50% at 50% 0%, var(--glow), transparent 70%),
    var(--bg);
}
.hero h1 { max-width: 28ch; margin: 18px auto 0; }
.lede { font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: var(--muted); max-width: 52ch; margin: 20px auto 0; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; margin: 0;
  padding: 6px 14px; border-radius: 999px; font-size: 0.85rem; font-weight: 600;
  background: var(--surface); border: 1px solid var(--border); color: var(--muted);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.cta-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 32px; }
.fine { font-size: 0.85rem; color: var(--muted); margin: 14px 0 0; }

.window {
  margin: 0; border-radius: 12px; overflow: hidden; background: var(--surface);
  box-shadow: var(--shadow);
}
.hero-shot { margin: 52px auto 0; max-width: 1040px; }

.protocols {
  list-style: none; padding: 0; margin: 36px auto 0;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 26px;
  color: var(--muted); font-size: 0.95rem;
}
.protocols li { display: flex; align-items: center; gap: 8px; }
.tag {
  font: 600 0.68rem/1 var(--mono); letter-spacing: 0.02em; text-transform: uppercase;
  padding: 4px 6px; border-radius: 5px;
}
.tag-http { color: var(--http); background: color-mix(in srgb, var(--http) 14%, transparent); }
.tag-ws { color: var(--ws); background: color-mix(in srgb, var(--ws) 14%, transparent); }
.tag-mqtt { color: var(--mqtt); background: color-mix(in srgb, var(--mqtt) 14%, transparent); }
.tag-tls { color: var(--tls); background: color-mix(in srgb, var(--tls) 14%, transparent); }

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.eyebrow { margin: 0 0 12px; font: 600 0.8rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); }
.eyebrow-mqtt { color: var(--mqtt); }
.sub { color: var(--muted); font-size: 1.1rem; max-width: 60ch; margin: 16px 0 0; }

.grid { display: grid; gap: 20px; margin-top: 48px; }
.features { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) { .features { grid-template-columns: repeat(2, 1fr); } }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px;
}
.card p { color: var(--muted); margin: 8px 0 0; }
.icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 18px; }
.icon svg { width: 22px; height: 22px; fill: currentColor; }
.i-http { color: var(--http); background: color-mix(in srgb, var(--http) 13%, transparent); }
.i-mqtt { color: var(--mqtt); background: color-mix(in srgb, var(--mqtt) 13%, transparent); }
.i-ws { color: var(--ws); background: color-mix(in srgb, var(--ws) 13%, transparent); }
.i-search { color: var(--accent); background: color-mix(in srgb, var(--accent) 13%, transparent); }
.i-warn { color: var(--tls); background: color-mix(in srgb, var(--tls) 13%, transparent); }
.i-export { color: var(--ok); background: color-mix(in srgb, var(--ok) 13%, transparent); }

/* MQTT split */
.split { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: center; }
.split-copy p:not(.eyebrow) { color: var(--muted); font-size: 1.05rem; }
.split-copy h2 { margin-bottom: 8px; }
.split-media { position: relative; padding-bottom: 60px; }
.window-offset { position: absolute; width: 72%; right: -24px; bottom: 0; }

.checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.checks li { position: relative; padding-left: 30px; color: var(--muted); }
.checks li strong { color: var(--text); font-weight: 600; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 0.3em; width: 18px; height: 18px; border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 16%, transparent)
    var(--check) center / 12px no-repeat;
}

/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
.shot { margin: 0; }
.shot img { border-radius: 10px; box-shadow: var(--shadow); }
.shot figcaption { color: var(--muted); font-size: 0.92rem; margin-top: 14px; }

/* Pro tools */
.pro-list { display: grid; gap: 96px; margin-top: 64px; }
.pro-item { display: grid; grid-template-columns: minmax(280px, 0.7fr) 1.6fr; gap: 56px; align-items: center; }
#pro .wrap { max-width: 1280px; }
.pro-item:nth-child(even) { grid-template-columns: 1.6fr minmax(280px, 0.7fr); }
.pro-item:nth-child(even) .pro-copy { order: 2; }
.pro-copy h3 { font-size: clamp(1.4rem, 2.4vw, 1.75rem); font-weight: 700; margin-top: 4px; }
.pro-copy p { color: var(--muted); font-size: 1.05rem; margin: 14px 0 0; }
.pro-copy .checks { margin-top: 20px; gap: 10px; }
.pro-tag {
  display: inline-block; font: 600 0.68rem/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent);
  padding: 5px 8px; border-radius: 6px;
}
.pro-media { position: relative; }
.pro-media .window-offset { width: 52%; right: -24px; bottom: -8px; }
.pro-media.has-offset { padding-bottom: 96px; }

/* Pricing */
.pricing { grid-template-columns: repeat(2, minmax(0, 400px)); justify-content: center; }
.plan {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 32px;
}
.plan .checks { margin-bottom: 28px; flex: 1; align-content: start; }
.plan-pro { border: 2px solid var(--accent); box-shadow: 0 24px 60px -24px var(--glow); }
.badge {
  position: absolute; top: -13px; left: 32px; margin: 0;
  background: var(--accent); color: var(--accent-text);
  font-size: 0.78rem; font-weight: 650; padding: 4px 12px; border-radius: 999px;
}
.price { margin: 16px 0 4px; display: flex; align-items: baseline; gap: 8px; }
.amount { font-size: 3rem; font-weight: 750; letter-spacing: -0.03em; line-height: 1; }
.per { color: var(--muted); }
.plan-note { color: var(--muted); margin: 0; }
.pricing + .fine { margin-top: 24px; }

/* FAQ */
details { border-bottom: 1px solid var(--border); padding: 18px 0; }
details:first-of-type { margin-top: 32px; border-top: 1px solid var(--border); }
summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-weight: 400; font-size: 1.3rem; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { color: var(--muted); margin: 12px 0 0; }

/* Waitlist / download */
.cta { background: radial-gradient(70% 80% at 50% 100%, var(--glow), transparent 70%), var(--bg-alt); border-top: 1px solid var(--border); }
.waitlist { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 32px auto 0; max-width: 520px; }
[hidden] { display: none !important; }
.waitlist input {
  flex: 1 1 240px; min-width: 0; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); font: 1rem var(--sans);
}
.waitlist input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.form-status { flex-basis: 100%; min-height: 1.4em; margin: 4px 0 0; color: var(--muted); font-size: 0.92rem; }
.waitlist-fallback { margin-top: 32px; }
.download { margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--border); }

/* Footer */
.footer { padding: 32px 0; color: var(--muted); font-size: 0.9rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.footer p { margin: 0; }
.footer nav { display: flex; gap: 20px; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--text); }

@media (max-width: 900px) {
  .features { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .window-offset { right: 0; }
  .gallery { grid-template-columns: 1fr; max-width: 560px; }
  .pro-list { gap: 72px; }
  .pro-item, .pro-item:nth-child(even) { grid-template-columns: 1fr; gap: 32px; }
  .pro-item:nth-child(even) .pro-copy { order: 0; }
  .pro-media .window-offset { right: 0; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .nav-links { display: none; }
  .nav-inner .btn-small { margin-left: auto; }
  .hero { padding-top: 48px; }
  .section { padding: 72px 0; }
  .features, .pricing { grid-template-columns: 1fr; }
  .hero-shot { margin-top: 40px; }
  .cta-row .btn { width: 100%; }
  .plan { padding: 26px 22px; }
  .window-offset { display: none; }
  .split-media, .pro-media.has-offset { padding-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}
.waitlist-fallback[hidden] + .download { border-top: 0; margin-top: 24px; padding-top: 0; }