/* Keyturn Systems — machined brass & charcoal */
:root {
  --bg: #16181d;
  --bg2: #1d2027;
  --bg3: #22252d;
  --ink: #f2efe9;
  --muted: #b3aea2;
  --faint: #7e7a70;
  --brass: #d4a437;
  --brass-deep: #b8860b;
  --steel: #8c9ab0;
  --line: #2e323b;
  --maxw: 1120px;
  --radius: 10px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--brass); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- type ---- */
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.015em; font-weight: 750; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.15rem; }
.overline {
  display: block;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 0.9rem;
}
.lead { font-size: 1.18rem; color: var(--muted); max-width: 62ch; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* ---- layout ---- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.4rem; }
section { padding: 5.2rem 0; position: relative; }
section.tight { padding: 3.4rem 0; }

/* ---- header ---- */
header.site {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; gap: 1.6rem; height: 64px; }
.wordmark { display: flex; align-items: center; gap: 0.6rem; color: var(--ink); font-weight: 800; letter-spacing: 0.06em; font-size: 1.02rem; white-space: nowrap; }
.wordmark:hover { text-decoration: none; }
.wordmark .glyph { width: 26px; height: 26px; flex: none; }
.wordmark span b { color: var(--brass); font-weight: 800; }
nav.main { margin-left: auto; display: flex; gap: 1.4rem; align-items: center; }
nav.main a { color: var(--muted); font-size: 0.95rem; font-weight: 550; }
nav.main a:hover { color: var(--ink); text-decoration: none; }
nav.main a.active { color: var(--ink); }
.btn, nav.main a.btn, footer.site a.btn {
  display: inline-block; padding: 0.72rem 1.35rem; border-radius: 8px;
  background: var(--brass); color: #17130a; font-weight: 700; font-size: 0.98rem;
  border: none; cursor: pointer; transition: transform 0.12s ease, background 0.12s ease;
}
.btn:hover, nav.main a.btn:hover { background: #e3b654; color: #17130a; text-decoration: none; transform: translateY(-1px); }
.btn.ghost, nav.main a.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--brass); color: var(--brass); background: transparent; }
.btn.small { padding: 0.5rem 0.95rem; font-size: 0.88rem; }
nav.main .menu-toggle { display: none; }

/* ---- hero / parallax ---- */
.hero {
  min-height: 88vh; display: flex; align-items: center; overflow: hidden; position: relative;
  padding: 6rem 0;
}
.parallax-bg {
  position: absolute; inset: -12% 0; z-index: -2;
  background-size: cover; background-position: center;
  will-change: transform;
}
.parallax-veil { position: absolute; inset: 0; z-index: -1; }
.hero .parallax-veil { background: linear-gradient(100deg, rgba(22,24,29,0.94) 34%, rgba(22,24,29,0.55) 70%, rgba(22,24,29,0.35)); }
.bgsection .parallax-veil { background: rgba(22,24,29,0.88); }
.hero h1 { max-width: 17ch; }
.hero .lead { margin: 1.4rem 0 2.2rem; }
.hero .sub { color: var(--faint); font-size: 0.98rem; margin-top: 1.6rem; }

/* ---- reveal on scroll ---- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---- cards ---- */
.grid { display: grid; gap: 1.2rem; }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--bg2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--brass) 45%, var(--line)); }
.card h3 { margin-bottom: 0.55rem; }
.card p { color: var(--muted); font-size: 0.97rem; }
.card .price { color: var(--brass); font-weight: 700; margin-top: 0.9rem; font-size: 0.95rem; }

/* ---- expanders (preloaded, expand in place) ---- */
.expander { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg2); margin-bottom: 1rem; overflow: hidden; }
.expander > button {
  width: 100%; display: flex; align-items: center; gap: 1rem; text-align: left;
  background: none; border: none; color: var(--ink); font: inherit; font-weight: 700;
  padding: 1.25rem 1.5rem; cursor: pointer; font-size: 1.08rem;
}
.expander > button .chev { margin-left: auto; color: var(--brass); transition: transform 0.25s ease; flex: none; }
.expander.open > button .chev { transform: rotate(90deg); }
.expander .body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.35s ease; }
.expander.open .body { grid-template-rows: 1fr; }
.expander .body > div { overflow: hidden; }
.expander .inner { padding: 0 1.5rem 1.5rem; color: var(--muted); }
.expander .inner p + p { margin-top: 0.8rem; }
.expander .inner ul { margin: 0.6rem 0 0.6rem 1.2rem; }
.expander .inner li { margin-bottom: 0.45rem; }
.expander .tag { color: var(--brass); font-weight: 700; }

/* ---- curve ---- */
.curve { counter-reset: stage; display: grid; gap: 0; margin-top: 2.6rem; position: relative; }
.stage {
  display: grid; grid-template-columns: 64px 1fr; gap: 1.3rem; padding: 1.5rem 0;
  border-left: 2px solid var(--line); padding-left: 0; position: relative; margin-left: 31px;
}
.stage .num {
  width: 64px; height: 64px; margin-left: -33px; flex: none; border-radius: 50%;
  background: var(--bg2); border: 2px solid var(--line); display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.35rem; color: var(--brass); transition: border-color 0.4s ease, box-shadow 0.4s ease;
}
.stage.in .num { border-color: var(--brass); box-shadow: 0 0 24px rgba(212, 164, 55, 0.25); }
.stage h3 { margin-bottom: 0.3rem; }
.stage p { color: var(--muted); max-width: 58ch; }

/* ---- tables ---- */
table.plain { width: 100%; border-collapse: collapse; margin-top: 1.4rem; }
table.plain th, table.plain td { text-align: left; padding: 0.85rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
table.plain th { color: var(--brass); font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; }
table.plain td { color: var(--muted); }
table.plain td b, table.plain td strong { color: var(--ink); }
.tablewrap { overflow-x: auto; }

/* ---- industry band ---- */
.industries { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 2.4rem; }
.ind {
  position: relative; border-radius: var(--radius); overflow: hidden; min-height: 190px;
  display: flex; align-items: flex-end; border: 1px solid var(--line);
}
.ind img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.55; transition: opacity 0.2s ease, transform 0.4s ease; }
.ind:hover img { opacity: 0.75; transform: scale(1.04); }
.ind .label { position: relative; padding: 1rem 1.1rem; width: 100%; background: linear-gradient(transparent, rgba(16,17,21,0.92) 45%); }
.ind .label b { display: block; font-size: 1rem; }
.ind .label span { color: var(--muted); font-size: 0.84rem; line-height: 1.4; display: block; margin-top: 0.2rem; }

/* ---- no list ---- */
.nolist { display: grid; gap: 0.9rem; margin-top: 1.8rem; }
.no {
  display: grid; grid-template-columns: 34px 1fr; gap: 1rem; align-items: start;
  background: var(--bg2); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.3rem;
}
.no .x { color: var(--brass); font-weight: 800; font-size: 1.15rem; line-height: 1.5; }
.no b { display: block; margin-bottom: 0.15rem; }
.no p { color: var(--muted); font-size: 0.95rem; }

/* ---- fit columns ---- */
.fitcols { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 2rem; }
.fitcols .card ul { margin: 0.8rem 0 0 1.2rem; color: var(--muted); }
.fitcols .card li { margin-bottom: 0.6rem; }

/* ---- assessment ---- */
.assess { max-width: 720px; margin: 0 auto; }
.assess .panel { background: var(--bg2); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem; }
.assess label { display: block; font-weight: 650; margin: 1.1rem 0 0.4rem; font-size: 0.95rem; }
.assess input[type="text"], .assess input[type="email"], .assess input[type="tel"], .assess textarea {
  width: 100%; padding: 0.8rem 0.95rem; border-radius: 8px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font: inherit; font-size: 1rem;
}
.assess input:focus, .assess textarea:focus { outline: 2px solid var(--brass-deep); border-color: transparent; }
.progress { height: 6px; background: var(--bg3); border-radius: 3px; margin: 1.4rem 0 2rem; overflow: hidden; }
.progress i { display: block; height: 100%; background: var(--brass); border-radius: 3px; transition: width 0.3s ease; }
.qtext { font-size: 1.35rem; font-weight: 730; line-height: 1.35; margin-bottom: 1.4rem; }
.opts { display: grid; gap: 0.7rem; }
.opt {
  text-align: left; padding: 1rem 1.15rem; border-radius: 8px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font: inherit; font-size: 1rem; cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.opt:hover { border-color: var(--brass); }
.opt.sel { border-color: var(--brass); background: color-mix(in srgb, var(--brass) 10%, var(--bg)); }
.qnav { display: flex; justify-content: space-between; margin-top: 1.8rem; align-items: center; }
.qnav .back { background: none; border: none; color: var(--faint); cursor: pointer; font: inherit; }
.qnav .back:hover { color: var(--ink); }
.gift { color: var(--faint); font-size: 0.88rem; margin-top: 1.1rem; font-style: italic; }
.stagecard { text-align: center; padding: 2.6rem 2rem; }
.stagecard .big { font-size: 3.2rem; font-weight: 800; color: var(--brass); line-height: 1; }
.err { color: #e08c7a; font-size: 0.92rem; margin-top: 0.8rem; display: none; }

/* ---- footer ---- */
footer.site { border-top: 1px solid var(--line); padding: 3rem 0 3.4rem; margin-top: 2rem; color: var(--faint); font-size: 0.92rem; }
footer.site .cols { display: flex; gap: 2.5rem; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; }
footer.site b { color: var(--muted); display: block; margin-bottom: 0.3rem; }

/* ---- band CTA ---- */
.cta-band { background: var(--bg2); border-block: 1px solid var(--line); text-align: center; }
.cta-band .lead { margin: 0.8rem auto 1.8rem; }

/* ---- prose (proof / about) ---- */
.prose { max-width: 70ch; margin: 0 auto; }
.prose p { margin-bottom: 1.15rem; color: var(--muted); }
.prose p.open { color: var(--ink); font-size: 1.15rem; }
.prose h2 { margin: 2.6rem 0 1rem; }
.prose h3 { margin: 2rem 0 0.7rem; color: var(--ink); }
.prose ul { margin: 0 0 1.15rem 1.3rem; color: var(--muted); }
.prose li { margin-bottom: 0.5rem; }
.prose blockquote {
  border-left: 3px solid var(--brass); padding: 0.4rem 0 0.4rem 1.3rem; margin: 1.6rem 0;
  color: var(--ink); font-size: 1.12rem; font-weight: 600;
}

/* ---- responsive ---- */
@media (max-width: 900px) {
  .grid.c3, .grid.c4, .industries { grid-template-columns: repeat(2, 1fr); }
  .fitcols { grid-template-columns: 1fr; }
  nav.main { gap: 1rem; }
  nav.main a:not(.btn) { display: none; }
  nav.main .menu-toggle { display: inline-flex; background: none; border: 1px solid var(--line); color: var(--ink); border-radius: 8px; padding: 0.45rem 0.7rem; cursor: pointer; font: inherit; }
  nav.main.open { position: fixed; inset: 64px 0 auto 0; background: var(--bg2); flex-direction: column; padding: 1.4rem; border-bottom: 1px solid var(--line); }
  nav.main.open a:not(.btn) { display: block; font-size: 1.1rem; }
}
@media (max-width: 560px) {
  .grid.c3, .grid.c4, .industries { grid-template-columns: 1fr; }
  section { padding: 3.6rem 0; }
  .hero { min-height: 74vh; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .stage .num, .expander .body, .opt, .btn { transition: none !important; }
  .parallax-bg { transform: none !important; }
}