/* ===== Design tokens — Concrete (brutalist) ===== */
:root {
  --bg: #d3d0c8;
  --bg-soft: #c9c6bd;
  --bg-card: #cdcac2;
  --bg-ink: #18170f;
  --fg: #18170f;
  --muted: #565449;
  --accent: #ff5a1f;
  --on-accent: #ffffff;
  --border: #18170f;
  --bw: 2px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--fg);
  background: var(--bg);
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Brand accent (was a gradient) — now solid safety-orange. */
.grad {
  color: var(--accent);
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 0 5px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  font: inherit;
  font-weight: 700;
  padding: 12px 20px;
  border: var(--bw) solid var(--border);
  background: var(--bg-soft);
  color: var(--fg);
  cursor: pointer;
  transition: filter 0.12s ease;
}
.btn:hover {
  filter: brightness(0.96);
}
.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}
.btn-ghost {
  background: transparent;
}
.btn-lg {
  padding: 16px 30px;
  font-size: 17px;
}

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  background: var(--bg);
  border-bottom: var(--bw) solid var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
  font-size: 18px;
  letter-spacing: -0.3px;
  text-transform: uppercase;
}
.brand-mark {
  width: 18px;
  height: 18px;
  background: var(--accent);
  border: var(--bw) solid var(--border);
}
.nav-links {
  display: flex;
  gap: 22px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}
.nav-links a:hover {
  color: var(--fg);
}
.nav-cta {
  padding: 9px 16px;
  font-size: 14px;
}

/* ===== Hero ===== */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 24px 40px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 12px;
  color: var(--accent);
  margin: 0 0 14px;
  font-weight: 800;
}
.hero h1 {
  font-size: clamp(34px, 5.4vw, 58px);
  line-height: 1.02;
  margin: 0 0 18px;
  letter-spacing: -1px;
  font-weight: 850;
}
.lede {
  color: var(--muted);
  font-size: 17px;
  margin: 0 0 26px;
  max-width: 38ch;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-points {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}
.hero-points li::before {
  content: "→";
  color: var(--accent);
  font-weight: 800;
  margin-right: 10px;
}

/* ===== Popup mock ===== */
.popup-mock {
  width: 320px;
  justify-self: center;
  padding: 16px;
  background: var(--bg);
  border: var(--bw) solid var(--border);
  box-shadow: 10px 10px 0 var(--border);
}
.pm-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.pm-title {
  font-weight: 850;
  font-size: 17px;
  text-transform: uppercase;
  letter-spacing: -0.3px;
}
.pm-switch {
  min-width: 56px;
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  color: var(--on-accent);
  background: var(--accent);
  border: var(--bw) solid var(--border);
  flex: none;
}
.pm-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.pm-chip {
  font-size: 12px;
  padding: 6px 11px;
  border: var(--bw) solid var(--border);
  color: var(--muted);
  background: var(--bg-soft);
}
.pm-chip--active {
  color: var(--on-accent);
  background: var(--accent);
}
.pm-control {
  margin-bottom: 13px;
}
.pm-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 6px;
}
.pm-val {
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}
.pm-track {
  height: 8px;
  background: var(--bg-soft);
  border: var(--bw) solid var(--border);
  overflow: hidden;
}
.pm-track > span {
  display: block;
  height: 100%;
  background: var(--accent);
}
.pm-foot {
  margin-top: 6px;
}
.pm-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}
.pm-box {
  width: 15px;
  height: 15px;
  background: var(--accent);
  border: var(--bw) solid var(--border);
}

/* ===== Stat strip ===== */
.strip {
  max-width: var(--maxw);
  margin: 12px auto;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  border-top: var(--bw) solid var(--border);
  border-bottom: var(--bw) solid var(--border);
}
.strip div {
  text-align: center;
}
.strip strong {
  display: block;
  font-size: 32px;
  font-weight: 850;
  color: var(--accent);
}
.strip span {
  color: var(--muted);
  font-size: 13px;
}

/* ===== Sections ===== */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 24px;
}
.section--alt {
  max-width: none;
  background: var(--bg-soft);
  border-top: var(--bw) solid var(--border);
  border-bottom: var(--bw) solid var(--border);
}
.section--alt > * {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}
.section-title {
  font-size: clamp(26px, 3.6vw, 38px);
  text-align: center;
  margin: 0 0 10px;
  letter-spacing: -0.5px;
  font-weight: 850;
}
.section-sub {
  text-align: center;
  color: var(--muted);
  max-width: 56ch;
  margin: 0 auto 44px;
}

/* ===== Feature grid ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.card {
  background: var(--bg-card);
  border: var(--bw) solid var(--border);
  padding: 24px;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0 var(--border);
}
.card-icon {
  font-size: 26px;
  margin-bottom: 12px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* ===== Presets ===== */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}
.preset {
  background: var(--bg-card);
  border: var(--bw) solid var(--border);
  padding: 20px 18px;
}
.preset--feature {
  background: var(--accent);
  color: var(--on-accent);
}
.preset h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 800;
}
.preset-meta {
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  margin: 0 0 8px;
}
.preset--feature .preset-meta {
  color: #ffe2d6;
}
.preset p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.preset--feature p:last-child {
  color: #ffe2d6;
}

/* ===== Demo ===== */
.demo {
  background: var(--bg-card);
  border: var(--bw) solid var(--border);
  padding: 28px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: center;
}
.demo-play {
  white-space: nowrap;
}
.demo-play[data-on="true"] {
  background: var(--bg-soft);
  color: var(--fg);
}
.demo-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.demo-controls label {
  display: block;
  font-size: 13px;
}
.demo-controls input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: var(--bg-soft);
  border: var(--bw) solid var(--border);
}
.demo-controls input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent);
  cursor: pointer;
  border: var(--bw) solid var(--border);
}
.demo-hint {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

/* ===== Install ===== */
.install {
  text-align: center;
}
.install-single {
  max-width: 520px;
  margin: 0 auto;
  background: var(--bg-card);
  border: var(--bw) solid var(--border);
  padding: 36px 28px;
}
.install-lede {
  color: var(--muted);
  font-size: 16px;
  margin: 0 0 22px;
}
.install-note {
  color: var(--muted);
  font-size: 12px;
  margin: 14px 0 0;
}

/* ===== FAQ ===== */
.faq {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq details {
  background: var(--bg-card);
  border: var(--bw) solid var(--border);
  padding: 4px 18px;
}
.faq summary {
  cursor: pointer;
  padding: 14px 0;
  font-weight: 700;
  list-style: none;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-size: 20px;
  line-height: 1;
  font-weight: 800;
}
.faq details[open] summary::after {
  content: "−";
}
.faq details p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

/* ===== CTA + footer ===== */
.cta {
  text-align: center;
  padding: 80px 24px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.cta h2 {
  font-size: clamp(28px, 3.8vw, 42px);
  margin: 0 0 26px;
  font-weight: 850;
  letter-spacing: -0.5px;
}
.footer {
  border-top: var(--bw) solid var(--border);
  padding: 36px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
.footer a {
  color: var(--fg);
  font-weight: 600;
  border-bottom: 2px solid var(--accent);
}
.footer-fine {
  opacity: 0.75;
  font-size: 12px;
}

/* ===== Responsive =====
   The card grids use auto-fit/minmax, so they reflow fluidly at any width
   on their own. These breakpoints only handle the hero, demo, strip, nav. */
@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 40px;
  }
  .lede {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions,
  .hero-points {
    justify-content: center;
    align-items: center;
  }
  .popup-mock {
    width: min(320px, 100%);
  }
  .demo {
    grid-template-columns: 1fr;
  }
  .demo-controls {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 620px) {
  .strip {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }
  .nav-links {
    display: none;
  }
}