/* ============================================================
   Blue Key Digital
   Palette derived from key metals: prussian ink, brass, nickel.
   Type: Bricolage Grotesque (display) / Newsreader (body) / JetBrains Mono (spec)
   ============================================================ */

:root {
  --ink:        #0B1A2B;
  --ink-soft:   #14293F;
  --ink-line:   #23405C;
  --brass:      #D0A045;
  --brass-deep: #A87A24;
  --steel:      #3D5464;
  --steel-lo:   #8FA6B8;
  --paper:      #EDF1F4;
  --paper-hi:   #FFFFFF;
  --line:       #C9D5DE;

  --w-max: 1200px;
  --gut: clamp(1.25rem, 4vw, 4rem);

  --f-disp: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Newsreader", Georgia, "Times New Roman", serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: clamp(1.02rem, 0.98rem + 0.22vw, 1.2rem);
  line-height: 1.62;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

a { color: inherit; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--brass); color: var(--ink);
  padding: 0.75rem 1.25rem; font-family: var(--f-mono); font-size: 0.8rem;
  z-index: 99;
}
.skip:focus { left: 0; }

:focus-visible {
  outline: 3px solid var(--brass);
  outline-offset: 3px;
}

.wrap { width: 100%; max-width: var(--w-max); margin-inline: auto; padding-inline: var(--gut); }

/* ---------------- masthead ---------------- */

.masthead {
  position: relative; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  /* full-bleed bar, content aligned to the same measure as .wrap */
  padding-block: 1.4rem;
  padding-inline: max(var(--gut), calc((100% - var(--w-max)) / 2 + var(--gut)));
  background: var(--ink); color: var(--paper);
}

.brand { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.brand-mark { width: 44px; height: auto; color: var(--brass); flex: none; }
.brand-text {
  font-family: var(--f-disp); font-weight: 700; font-size: 1.06rem;
  letter-spacing: -0.015em; font-variation-settings: "wdth" 90;
}
.brand-thin { font-weight: 400; color: var(--steel-lo); }

.masthead-nav { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2rem); }
.masthead-nav a {
  font-family: var(--f-mono); font-size: 0.76rem; letter-spacing: 0.06em;
  text-transform: uppercase; text-decoration: none; color: var(--steel-lo);
  transition: color 0.18s ease;
}
.masthead-nav a:hover { color: var(--paper); }
.masthead-nav .btn { color: var(--ink); }
.masthead-nav .btn:hover { color: var(--ink); }

@media (max-width: 720px) {
  .masthead { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .masthead-nav { flex-wrap: wrap; gap: 1rem 1.25rem; }
}

/* ---------------- buttons ---------------- */

.btn {
  display: inline-block; text-decoration: none;
  background: var(--brass); color: var(--ink);
  font-family: var(--f-mono); font-size: 0.8rem; letter-spacing: 0.06em;
  text-transform: uppercase; font-weight: 500;
  padding: 0.85rem 1.5rem;
  border: 2px solid var(--brass);
  transition: background 0.18s ease, color 0.18s ease;
}
.btn:hover { background: transparent; color: var(--brass); }
.btn-sm { padding: 0.55rem 1rem; font-size: 0.72rem; }
.btn-lg { padding: 1rem 2rem; font-size: 0.86rem; }
.btn-onbrass { background: var(--ink); color: var(--brass); border-color: var(--ink); }
.btn-onbrass:hover { background: transparent; color: var(--ink); }

.link-arrow {
  font-family: var(--f-mono); font-size: 0.8rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--steel-lo); text-decoration: none;
  border-bottom: 1px solid var(--ink-line); padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.link-arrow::after { content: " \2192"; }
.link-arrow:hover { color: var(--brass); border-color: var(--brass); }

/* ---------------- hero ---------------- */

.hero {
  position: relative;
  background: var(--ink); color: var(--paper);
  padding: clamp(3.5rem, 9vw, 8rem) 0 0;
  overflow: hidden;
}
.hero-inner { max-width: var(--w-max); margin-inline: auto; padding-inline: var(--gut); }

.eyebrow {
  margin: 0 0 clamp(1.5rem, 4vw, 2.5rem);
  font-family: var(--f-mono); font-size: 0.76rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--brass);
}

.hero-h {
  margin: 0;
  font-family: var(--f-disp);
  font-weight: 800;
  font-size: clamp(2.7rem, 8.4vw, 6.6rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-variation-settings: "wdth" 92;
}
.hero-line { display: block; }
.hero-strike { color: var(--steel-lo); position: relative; display: inline-block; }
.hero-strike::after {
  content: ""; position: absolute; left: -1%; right: -1%; top: 54%; height: 3px;
  background: var(--brass); transform: scaleX(0); transform-origin: left center;
  animation: cut 0.7s cubic-bezier(0.7, 0, 0.2, 1) 0.5s forwards;
}
.hero-accent { color: var(--brass); }

@keyframes cut { to { transform: scaleX(1); } }

.hero-sub {
  max-width: 46ch;
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  font-size: clamp(1.06rem, 1rem + 0.3vw, 1.28rem);
  color: #C6D3DE;
}

.hero-cta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 1.4rem;
  margin-top: clamp(2rem, 5vw, 3rem);
}

/* signature: bitting profile */
.bitting-wrap { margin-top: clamp(2.5rem, 6vw, 4.5rem); color: var(--ink-line); line-height: 0; }
.bitting { display: block; width: 100%; height: clamp(60px, 9vw, 120px); }
.bitting-path {
  stroke-dasharray: 3000; stroke-dashoffset: 3000;
  animation: bit 2s cubic-bezier(0.65, 0, 0.35, 1) 0.35s forwards;
}
@keyframes bit { to { stroke-dashoffset: 0; } }

.no-motion .bitting-path { animation: none; stroke-dashoffset: 0; }
.no-motion .hero-strike::after { animation: none; transform: scaleX(1); }

/* ---------------- bands ---------------- */

.band { padding: clamp(3.5rem, 9vw, 7.5rem) 0; }
.band-paper { background: var(--paper); color: var(--ink); }
.band-ink { background: var(--ink); color: var(--paper); }
.band-brass { background: var(--brass); color: var(--ink); }

.split {
  display: grid; grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 3.5rem);
  align-items: start;
}
@media (max-width: 780px) { .split { grid-template-columns: 1fr; } }

.rail-label {
  margin: 0.4rem 0 0;
  font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--brass);
}
.rail-label-dark { color: var(--ink); opacity: 0.65; }

.h2 {
  margin: 0;
  font-family: var(--f-disp); font-weight: 700;
  font-size: clamp(1.8rem, 4.2vw, 3.1rem);
  line-height: 1.04; letter-spacing: -0.028em;
  font-variation-settings: "wdth" 94;
  max-width: 20ch;
}

.lede { font-size: clamp(1.06rem, 1rem + 0.3vw, 1.24rem); max-width: 58ch; }
.split-body p { max-width: 62ch; }
.band-ink .split-body p { color: #C6D3DE; }

/* ---------------- services ---------------- */

.cuts {
  list-style: none; margin: clamp(2.5rem, 6vw, 4rem) 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink-line);
}
.cut {
  padding: clamp(1.75rem, 3.5vw, 2.5rem) clamp(1.25rem, 2.5vw, 2rem) clamp(2rem, 4vw, 2.75rem) 0;
  border-bottom: 1px solid var(--ink-line);
}
@media (min-width: 860px) {
  .cut { border-right: 1px solid var(--ink-line); padding-inline: clamp(1.25rem, 2.5vw, 2rem); }
  .cut:first-child { padding-left: 0; }
  .cut:last-child { border-right: 0; }
}
.cut-no {
  display: block; margin-bottom: 0.9rem;
  font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.1em; color: var(--brass);
}
.cut-h {
  margin: 0 0 0.7rem;
  font-family: var(--f-disp); font-weight: 700; font-size: 1.32rem; letter-spacing: -0.015em;
}
.cut p { margin: 0; color: #C6D3DE; font-size: 1rem; }

/* ---------------- process ---------------- */

.steps {
  list-style: none; margin: clamp(2.5rem, 6vw, 4rem) 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.25rem);
}
.step { border-top: 3px solid var(--ink); padding-top: 1.1rem; }
.step-code {
  margin: 0 0 0.55rem;
  font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.12em; color: var(--brass-deep);
}
.step-h {
  margin: 0 0 0.5rem;
  font-family: var(--f-disp); font-weight: 700; font-size: 1.28rem; letter-spacing: -0.015em;
}
.step p { margin: 0; font-size: 1rem; color: var(--steel); }

/* ---------------- spec ---------------- */

.spec { margin: clamp(2.5rem, 6vw, 4rem) 0 0; }
.spec-row {
  display: grid; grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 3.5rem);
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--ink-line);
}
.spec-row:first-child { border-top: 1px solid var(--ink-line); }
.spec-row dt {
  font-family: var(--f-mono); font-size: 0.76rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--brass);
}
.spec-row dd { margin: 0; font-size: 1.02rem; }
@media (max-width: 640px) { .spec-row { grid-template-columns: 1fr; gap: 0.35rem; } }

/* ---------------- faq ---------------- */

.faq { margin: clamp(2.5rem, 6vw, 4rem) 0 0; border-top: 1px solid var(--line); }
.qa { border-bottom: 1px solid var(--line); }
.qa summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: baseline; gap: 1rem;
  padding: 1.3rem 0;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: "+"; margin-left: auto; flex: none;
  font-family: var(--f-mono); font-size: 1.3rem; line-height: 1; color: var(--brass-deep);
  transition: transform 0.2s ease;
}
.qa[open] summary::after { content: "\2013"; }
.qa summary h3 {
  margin: 0; display: inline;
  font-family: var(--f-disp); font-weight: 600;
  font-size: clamp(1.08rem, 1rem + 0.5vw, 1.35rem); letter-spacing: -0.015em;
}
.qa summary:hover h3 { color: var(--brass-deep); }
.qa p { margin: 0 0 1.4rem; max-width: 68ch; color: var(--steel); }
.qa code {
  font-family: var(--f-mono); font-size: 0.88em;
  background: #DDE5EB; padding: 0.1em 0.35em;
}

/* ---------------- cta ---------------- */

.cta-wrap { text-align: left; }
.cta-h {
  margin: 1rem 0 0;
  font-family: var(--f-disp); font-weight: 800;
  font-size: clamp(2rem, 5.6vw, 4rem); line-height: 1.0; letter-spacing: -0.035em;
  max-width: 18ch;
}
.cta-sub { margin: 1.4rem 0 0; max-width: 52ch; font-size: clamp(1.04rem, 1rem + 0.3vw, 1.22rem); }
.cta-actions { margin-top: clamp(2rem, 4vw, 2.75rem); }
.cta-fine {
  margin: 1rem 0 0;
  font-family: var(--f-mono); font-size: 0.8rem; letter-spacing: 0.04em; opacity: 0.8;
}

/* ---------------- footer ---------------- */

.foot { background: var(--ink); color: var(--steel-lo); padding: clamp(2.5rem, 5vw, 4rem) 0; }
.foot-inner { display: grid; gap: 0.8rem; }
.foot-brand {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--f-disp); font-weight: 700; color: var(--paper); letter-spacing: -0.015em;
}
.foot-line { margin: 0; max-width: 40ch; }
.foot-meta { margin: 0; font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.04em; }
.foot-meta a { color: var(--brass); text-decoration: none; }
.foot-meta a:hover { text-decoration: underline; }

/* ---------------- reveal ---------------- */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.is-in { opacity: 1; transform: none; }
.no-motion .reveal { opacity: 1; transform: none; transition: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}