/* ─── Nav ─── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav-scrolled { border-bottom-color: var(--line); }
.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 64px;
  gap: 32px;
}
.nav-brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; letter-spacing: -0.012em; font-size: 16px;
}
.nav-links {
  display: flex; gap: 28px; justify-content: center;
  font-size: 13.5px; color: var(--ink-60);
}
.nav-links a:hover { color: var(--charcoal); }
.nav-cta { display: flex; align-items: center; gap: 16px; }
.nav-link-quiet { font-size: 13.5px; color: var(--ink-60); }
.nav-link-quiet:hover { color: var(--charcoal); }
.btn-sm { height: 36px; padding: 0 16px; font-size: 13px; }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-inner { grid-template-columns: 1fr auto; }
}

/* ─── Hero ─── */
.hero { padding-top: 56px; padding-bottom: 0; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
  min-height: clamp(540px, 70vh, 740px);
}
.hero-copy { display: flex; flex-direction: column; gap: 24px; max-width: 560px; }
.hero-copy h1 { margin-top: 4px; }
.hero-lead { max-width: 480px; }
.hero-cta { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-top: 8px; }
.hero-meta {
  list-style: none; padding: 0; margin: 16px 0 0;
  display: flex; gap: 22px; flex-wrap: wrap;
  color: var(--ink-60); font-size: 13.5px;
}
.hero-meta li { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta svg { color: var(--teal); }

/* Kit "render" */
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1.02;
  width: 100%;
  max-width: 580px;
  justify-self: end;
}
.kit-stage {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--teal-tint) 0%, var(--gray-50) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  grid-template-rows: 1.1fr .9fr;
  gap: 18px;
  padding: 30px;
}
.kit-stage-center { display: grid; place-items: center; }
.kit-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(31,32,36,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31,32,36,.05) 1px, transparent 1px);
  background-size: 32px 32px;
  mask: radial-gradient(circle at center, #000 60%, transparent 100%);
  -webkit-mask: radial-gradient(circle at center, #000 60%, transparent 100%);
  pointer-events: none;
}
.kit-item {
  position: relative;
  background: var(--paper);
  border-radius: 14px;
  box-shadow: 0 1px 1px rgba(20,22,26,.04), 0 12px 30px rgba(20,22,26,.08);
}
.kit-caption {
  position: absolute; left: 18px; bottom: 12px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
  color: var(--ink-40); text-transform: uppercase;
}

/* The kit box (large tile, knolling) */
.kit-box {
  grid-column: 1; grid-row: 1 / span 2;
  background: linear-gradient(180deg, #fff 0%, #fff 64%, #F2F4F4 64%, #F2F4F4 100%);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 22px;
}
.kit-box-top { display: flex; flex-direction: column; gap: 14px; }
.kit-box-band {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--paper);
}
.kit-box-mark {
  width: 28px; height: 28px; border-radius: 6px;
  display: grid; place-items: center; color: var(--charcoal);
  background: var(--teal-tint);
}
.kit-box-mark.big { width: 42px; height: 42px; border-radius: 10px; }
.kit-box-label { font-size: 12px; font-weight: 600; line-height: 1.2; letter-spacing: .04em; }
.kit-box-label em { font-style: normal; font-weight: 400; color: var(--ink-60); font-size: 11px; letter-spacing: 0; }
.kit-box-batch {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: .14em; color: var(--ink-60);
  text-transform: uppercase;
}
.kit-box-side {
  height: 14px;
  background: repeating-linear-gradient(90deg, var(--charcoal) 0 14px, transparent 14px 22px);
  opacity: .14;
  border-radius: 2px;
}

/* Instruction card */
.kit-card {
  grid-column: 2; grid-row: 1;
  padding: 18px; display: flex; flex-direction: column; gap: 10px;
}
.kit-card-line { height: 8px; border-radius: 4px; background: var(--gray-200); }
.kit-card-line.strong { height: 10px; background: var(--charcoal); width: 60%; }
.kit-card-line.short { width: 40%; }
.kit-card-foot {
  margin-top: auto; display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
  color: var(--ink-40); text-transform: uppercase;
}

/* Sample tube + Mailer share grid cell row 2 col 2 */
.kit-tube {
  grid-column: 2; grid-row: 2;
  background: var(--paper);
  display: flex; align-items: center; justify-content: center; gap: 0;
  padding: 20px;
}
.kit-tube-cap {
  width: 28px; height: 14px; border-radius: 4px 4px 0 0;
  background: var(--teal); margin-right: -1px;
}
.kit-tube-body {
  width: 28px; height: 96px; border-radius: 0 0 14px 14px;
  border: 1.5px solid var(--charcoal-2);
  border-top: none;
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, transparent 0%, transparent 60%, var(--teal-tint) 60%, var(--teal-tint) 100%);
}
.kit-tube-body::after {
  content: ""; position: absolute; left: -3px; right: -3px; top: 0; height: 8px;
  background: var(--charcoal-2); border-radius: 0;
  display: none;
}
.kit-tube-tick {
  position: absolute; left: 0; right: 0; top: 50%;
  height: 1px; background: var(--charcoal-2); opacity: .25;
}
/* Stack tube + mailer */
.kit-tube { flex-direction: row; }
.kit-tube .kit-tube-wrap { display: flex; flex-direction: column; align-items: center; }

/* Mailer overlaps row 2 (we restructure: tube + mailer both row 2) */
.kit-mailer {
  position: absolute;
  right: 22px; bottom: 22px;
  width: 46%; height: 36%;
  padding: 16px;
  background: linear-gradient(180deg, #fff 0%, #fff 70%, #F2F4F4 70%);
  display: flex; flex-direction: column; gap: 8px;
}
.kit-mailer-stamp {
  align-self: flex-start;
  font-family: var(--mono); font-size: 9px; line-height: 1.2;
  letter-spacing: .14em; padding: 4px 8px; border: 1px solid var(--charcoal-2);
  color: var(--charcoal-2); text-align: center;
}
.kit-mailer-bar { height: 6px; width: 70%; background: var(--gray-200); border-radius: 3px; }
.kit-mailer-bar.short { width: 40%; }

/* Re-layout: hide tube, place mailer + swatch + tube in row2col2 cell */
.kit-tube { display: none; }
.kit-mailer { position: relative; right: auto; bottom: auto; width: auto; height: auto; grid-column: 2; grid-row: 2; }
.kit-swatch { display: none; }

/* Big single-box variant */
.kit-bigbox {
  width: 70%; max-width: 360px;
  aspect-ratio: 1 / 1.25;
  background: var(--paper);
  border-radius: 18px;
  box-shadow: 0 30px 80px rgba(20,22,26,.16), 0 1px 1px rgba(20,22,26,.06);
  padding: 28px;
  display: flex; flex-direction: column; gap: 28px;
}
.kit-bigbox-top { display: flex; flex-direction: column; gap: 18px; }
.kit-bigbox-label { display: flex; flex-direction: column; gap: 4px; }
.kit-bigbox-brand { font-size: 28px; font-weight: 600; letter-spacing: .04em; }
.kit-bigbox-sub { font-size: 13px; color: var(--ink-60); letter-spacing: .01em; }
.kit-bigbox-meta {
  margin-top: auto;
  display: grid; grid-template-columns: auto 1fr; gap: 6px 14px;
  font-family: var(--mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: .14em;
}
.kit-bigbox-meta div:nth-child(odd) { color: var(--ink-40); }
.kit-bigbox-meta div:nth-child(even) { color: var(--charcoal); text-align: right; }

/* Abstract variant */
.kit-abstract { background: linear-gradient(180deg, var(--teal-tint) 0%, var(--gray-50) 100%); }
.kit-abs-ring {
  width: 72%; aspect-ratio: 1; border: 1px solid rgba(42,179,177,.4); border-radius: 50%;
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
}
.kit-abs-ring-2 { width: 50%; border-color: rgba(42,179,177,.6); }
.kit-abs-core {
  width: 24%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff 0%, var(--teal) 70%);
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  box-shadow: 0 20px 60px rgba(42,179,177,.4);
}

/* Partner strip */
.partner-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
  padding-top: 64px;
  padding-bottom: 24px;
}
.partner-line { height: 1px; background: var(--line); }
.partner-text { display: flex; align-items: center; gap: 16px; }
.partner-name {
  font-size: 13px; color: var(--ink-60);
  font-family: var(--mono); letter-spacing: .04em;
}

@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; min-height: 0; }
  .hero-visual { max-width: 520px; aspect-ratio: 1 / 1; }
  .partner-strip { grid-template-columns: 1fr; }
  .partner-line { display: none; }
}