/* ==========================================================================
   Saydalia — saydaliachain.com
   Design language: "expo" — pure white canvas, hairline structure, near-black
   single-voltage CTA, Inter 600 display / 400 body, JetBrains Mono on data
   surfaces, 96px section rhythm. Palette shifted to clinical cold blue with a
   controlled mint for verified states and one amber for excursion.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

a { color: inherit; }

table { border-collapse: collapse; width: 100%; }

/* --------------------------------------------------------------------------
   2. Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Surface */
  --canvas:            #ffffff;
  --canvas-soft:       #fafbfc;
  --surface-card:      #ffffff;
  --surface-strong:    #eef1f5;
  --surface-dark:      #0d1620;
  --surface-dark-elev: #16222f;

  /* Ink */
  --ink:            #101820;
  --body:           #57616e;
  --muted:          #656e79;
  --muted-soft:     #8a93a0;
  --on-primary:     #ffffff;
  --on-dark:        #ffffff;
  --on-dark-soft:   #aab6c4;
  --on-dark-faint:  #75828f;

  /* Hairlines */
  --hairline:        #eceff3;
  --hairline-soft:   #f4f6f9;
  --hairline-strong: #d7dce3;
  --hairline-dark:   #24313f;

  /* Voltage — a single cold near-black for CTAs */
  --primary:        #0d1620;
  --primary-active: #1e2c3a;

  /* Clinical cold blue */
  --cold:        #0a5ea8;  /* AA text / links */
  --cold-deep:   #084a86;
  --cold-bright: #2f8fd8;  /* fills only */
  --cold-tint:   #e6eff8;
  --cold-wash-1: #dbe9f7;
  --cold-wash-2: #f0f6fc;

  /* Verified — controlled mint */
  --mint:      #12b886;   /* fills only */
  --mint-ink:  #0b6b52;   /* AA text */
  --mint-wash: #e4f5ee;
  --mint-line: #9fdcc7;

  /* Excursion — a single amber */
  --amber:      #f0a202;  /* fills only */
  --amber-ink:  #8a4f00;  /* AA text */
  --amber-wash: #fdf1dd;
  --amber-line: #f0cd8e;

  /* Type */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Radii */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;

  /* Spacing */
  --s-xxs: 4px;
  --s-xs:  8px;
  --s-sm:  12px;
  --s-base:16px;
  --s-md:  20px;
  --s-lg:  24px;
  --s-xl:  32px;
  --s-xxl: 48px;
  --s-section: 96px;

  /* Depth */
  --shadow-soft: 0 4px 12px rgba(13, 22, 32, 0.05);
  --shadow-card: 0 1px 2px rgba(13, 22, 32, 0.04), 0 12px 32px rgba(13, 22, 32, 0.06);
}

/* --------------------------------------------------------------------------
   3. Base
   -------------------------------------------------------------------------- */
body {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h1 { font-size: 3.25rem; line-height: 1.05; letter-spacing: -0.033em; }
h2 { font-size: 2.25rem; line-height: 1.15; letter-spacing: -0.03em; }
h3 { font-size: 1.375rem; line-height: 1.25; letter-spacing: -0.022em; }
h4 { font-size: 1.125rem; line-height: 1.4; letter-spacing: -0.01em; }
h5 { font-size: 1rem;     line-height: 1.4; letter-spacing: 0; }

p + p { margin-top: 1em; }

strong { color: var(--ink); font-weight: 600; }
.card-dark strong,
.band-dark strong,
.tier-featured strong { color: var(--on-dark); }

code, kbd, samp, .mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.8125rem;
}

.num, .tabular {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

::selection { background: var(--cold-wash-1); color: var(--ink); }

/* Focus — always visible, never removed */
:focus-visible {
  outline: 2px solid var(--cold);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -64px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--r-md);
  transition: top 120ms ease;
}
.skip-link:focus { top: 12px; }

/* --------------------------------------------------------------------------
   4. Layout primitives
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-inline: 24px;
}

.wrap-narrow { max-width: 820px; }

.section { padding-block: var(--s-section); }
.section-sm { padding-block: 72px; }
.section-tight { padding-block: 64px; }

.band-soft   { background: var(--canvas-soft); }
.band-rule   { border-top: 1px solid var(--hairline); }
.band-dark   { background: var(--surface-dark); color: var(--on-dark-soft); }
.band-dark h2, .band-dark h3, .band-dark h4 { color: var(--on-dark); }

.section-head { max-width: 720px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p {
  margin-top: var(--s-base);
  font-size: 1.0625rem;
  color: var(--body);
}
.band-dark .section-head p { color: var(--on-dark-soft); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.088em;
  text-transform: uppercase;
  color: var(--cold);
  margin-bottom: var(--s-base);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  flex: none;
}
.band-dark .eyebrow { color: var(--on-dark-soft); }

.lede { font-size: 1.125rem; line-height: 1.55; }

.rule {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 0;
}

/* --------------------------------------------------------------------------
   5. Buttons & links
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease, transform 140ms ease;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}
.btn-primary:hover { background: var(--primary-active); }
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  background: var(--surface-card);
  color: var(--ink);
  border-color: var(--hairline-strong);
}
.btn-secondary:hover { border-color: var(--ink); }

.btn-onDark {
  background: var(--canvas);
  color: var(--ink);
}
.btn-onDark:hover { background: var(--cold-wash-2); }

.btn-ghostDark {
  background: transparent;
  color: var(--on-dark);
  border-color: var(--hairline-dark);
}
.btn-ghostDark:hover { border-color: var(--on-dark-soft); }

.btn-sm { height: 38px; padding: 0 14px; }
.btn-block { width: 100%; }

.btn svg { flex: none; }

.textlink {
  color: var(--cold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  font-weight: 500;
}
.textlink:hover { color: var(--cold-deep); text-decoration-thickness: 2px; }

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--cold);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}
.arrow-link:hover { text-decoration: underline; text-underline-offset: 3px; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-sm);
  align-items: center;
}
.cta-row.center { justify-content: center; }

.cta-note {
  margin-top: var(--s-base);
  font-size: 0.8125rem;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   6. Badges & state chips
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.088em;
  text-transform: uppercase;
}
.badge-cold { background: var(--cold-tint); color: var(--cold-deep); }
.badge-dark { background: var(--surface-dark-elev); color: var(--on-dark); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px 3px 7px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: nowrap;
}
.chip-verified { border-color: var(--mint-line); background: var(--mint-wash); color: var(--mint-ink); }
.chip-excursion { border-color: var(--amber-line); background: var(--amber-wash); color: var(--amber-ink); }
.chip-transit { border-color: var(--cold-wash-1); background: var(--cold-wash-2); color: var(--cold-deep); }
.chip svg { flex: none; }

/* --------------------------------------------------------------------------
   7. Header / navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--hairline);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--s-lg);
  min-height: 64px;
  flex-wrap: wrap;
  padding-block: 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-right: auto;
}
.brand .brand-mark { flex: none; }
.brand .brand-tld { color: var(--muted); font-weight: 500; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 10px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--body);
  text-decoration: none;
  border-radius: var(--r-sm);
}
.site-nav a:hover { color: var(--ink); background: var(--hairline-soft); }
.site-nav a[aria-current="page"] { color: var(--ink); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--s-xs);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 12px;
  background: var(--canvas);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  color: var(--ink);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   8. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: 84px;
  padding-bottom: 88px;
  isolation: isolate;
}

/* Cold atmospheric wash — hero only, per the design system */
.hero::before {
  content: "";
  position: absolute;
  inset: -220px 0 auto 0;
  height: 720px;
  z-index: -2;
  background:
    radial-gradient(60% 55% at 50% 32%, var(--cold-wash-1) 0%, rgba(219, 233, 247, 0.55) 42%, rgba(255, 255, 255, 0) 72%),
    radial-gradient(38% 40% at 78% 12%, rgba(18, 184, 134, 0.10) 0%, rgba(255, 255, 255, 0) 70%);
}

/* Faint clinical grid, drawn as an SVG data-URI */
.hero::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 520px;
  z-index: -1;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 48 48'%3E%3Cpath d='M48 0H0v48' fill='none' stroke='%23d7dce3' stroke-width='0.5'/%3E%3C/svg%3E");
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.55), rgba(0,0,0,0));
          mask-image: linear-gradient(to bottom, rgba(0,0,0,0.55), rgba(0,0,0,0));
}

.hero-inner {
  max-width: 880px;
  margin-inline: auto;
  text-align: center;
}

.hero h1 { margin-top: var(--s-md); }

.hero-sub {
  margin-top: var(--s-lg);
  margin-inline: auto;
  max-width: 640px;
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--body);
}

.hero .cta-row { margin-top: var(--s-xl); }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 20px;
  margin-top: var(--s-xl);
  font-size: 0.8125rem;
  color: var(--muted);
}
.hero-meta li { display: inline-flex; align-items: center; gap: 7px; }

/* --------------------------------------------------------------------------
   9. Mockup frame (product chrome)
   -------------------------------------------------------------------------- */
.mockup {
  margin-top: 56px;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.mockup-bar {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
  padding: 12px 16px;
  border-bottom: 1px solid var(--hairline);
  background: var(--canvas-soft);
  flex-wrap: wrap;
}
.mockup-dots { display: flex; gap: 6px; flex: none; }
.mockup-dots span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--hairline-strong);
  display: block;
}
.mockup-path {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.mockup-bar .chip { margin-left: auto; }

.mockup-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--s-base);
  padding: 20px 24px;
  border-bottom: 1px solid var(--hairline);
}
.mockup-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink);
}
.mockup-title span {
  display: block;
  margin-top: 4px;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--muted);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
.mockup-head-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.mockup-body { padding: 24px; }
.mockup-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding: 14px 24px;
  border-top: 1px solid var(--hairline);
  background: var(--canvas-soft);
  font-size: 0.75rem;
  color: var(--muted);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.caption {
  margin-top: var(--s-sm);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--muted);
  text-align: center;
}

/* --------------------------------------------------------------------------
   10. Figures / scrollable diagrams
   -------------------------------------------------------------------------- */
.figure-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.figure-scroll:focus-visible { outline-offset: 0; }
.figure-scroll > svg { display: block; height: auto; }

.chart-svg { width: 100%; min-width: 640px; }
.chain-svg { width: 100%; min-width: 800px; }
.recall-svg { width: 100%; min-width: 720px; }
.timeline-svg { width: 100%; min-width: 560px; }

.scroll-hint {
  display: none;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--muted);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: var(--s-base);
  padding-top: var(--s-base);
  border-top: 1px solid var(--hairline);
  font-size: 0.8125rem;
  color: var(--body);
}
.legend li { display: inline-flex; align-items: center; gap: 8px; }
.legend svg { flex: none; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   11. Grids & cards
   -------------------------------------------------------------------------- */
.grid { display: grid; gap: var(--s-lg); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-tight { gap: var(--s-base); }

.mt-xl { margin-top: var(--s-xl); }
.mt-xxl { margin-top: var(--s-xxl); }
.mt-lg { margin-top: var(--s-lg); }

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-lg);
  padding: var(--s-lg);
  transition: box-shadow 160ms ease, border-color 160ms ease;
}
.card:hover { box-shadow: var(--shadow-soft); }
.card h3, .card h4 { color: var(--ink); }
.card p { margin-top: 10px; font-size: 0.9375rem; }
.card-title-sm { font-size: 1.0625rem; line-height: 1.35; letter-spacing: -0.015em; }

.card-dark {
  background: var(--surface-dark);
  border-color: var(--surface-dark);
  color: var(--on-dark-soft);
}
.card-dark h3, .card-dark h4 { color: var(--on-dark); }
.card-dark .icon-plate { background: var(--surface-dark-elev); color: var(--on-dark); }

.icon-plate {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--r-md);
  background: var(--surface-strong);
  color: var(--ink);
  margin-bottom: var(--s-base);
}
.icon-plate-cold { background: var(--cold-tint); color: var(--cold-deep); }
.icon-plate-mint { background: var(--mint-wash); color: var(--mint-ink); }
.icon-plate-amber { background: var(--amber-wash); color: var(--amber-ink); }

/* Problem cards */
.problem-card { position: relative; padding-top: 26px; }
.problem-card .problem-idx {
  font-family: var(--mono);
  font-size: 0.6875rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 10px;
}
.problem-card h3 { font-size: 1.0625rem; line-height: 1.35; }

/* Feature list card */
.feature-card p { color: var(--body); }
.feature-meta {
  margin-top: var(--s-base);
  padding-top: var(--s-sm);
  border-top: 1px solid var(--hairline);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-transform: uppercase;
}
.card-dark .feature-meta { border-top-color: var(--hairline-dark); color: var(--on-dark-faint); }

/* Workflow steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--s-base);
  counter-reset: step;
}
.step {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-lg);
  padding: var(--s-md);
}
.step-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--cold);
  margin-bottom: var(--s-sm);
}
.step h3 { font-size: 1rem; letter-spacing: -0.01em; }
.step p { margin-top: 8px; margin-bottom: var(--s-sm); font-size: 0.875rem; }
.step-code {
  display: block;
  margin-top: auto;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  background: var(--surface-dark);
  color: var(--on-dark);
  font-family: var(--mono);
  font-size: 0.6875rem;
  line-height: 1.5;
  overflow-x: auto;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.step-code .tok-key { color: #7fc7f5; }
.step-code .tok-ok  { color: #63d9ae; }
.step-code .tok-warn{ color: #f5c359; }

/* Split layout */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: var(--s-xxl);
  align-items: center;
}
.split-text h2 { margin-bottom: var(--s-base); }
.split-list { margin-top: var(--s-lg); display: grid; gap: var(--s-base); }
.split-list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: var(--s-sm);
  font-size: 0.9375rem;
}
.split-list li svg { margin-top: 3px; }
.split-list strong { display: block; }

/* Metric tiles */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--s-base);
}
.metric {
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-lg);
  padding: var(--s-md) var(--s-lg);
  background: var(--surface-card);
}
.metric dt {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.metric dd {
  margin: 8px 0 0;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.metric p { margin-top: 6px; font-size: 0.8125rem; color: var(--body); }
.band-dark .metric {
  background: var(--surface-dark-elev);
  border-color: var(--hairline-dark);
}
.band-dark .metric dt { color: var(--on-dark-soft); }
.band-dark .metric dd { color: var(--on-dark); }
.band-dark .metric p { color: var(--on-dark-soft); }

/* Data table */
.data-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-lg);
  background: var(--surface-card);
}
table.data { min-width: 620px; font-size: 0.875rem; }
table.data caption {
  text-align: left;
  padding: 16px 20px 0;
  font-size: 0.8125rem;
  color: var(--muted);
}
table.data th,
table.data td {
  text-align: left;
  padding: 12px 20px;
  border-bottom: 1px solid var(--hairline);
  font-variant-numeric: tabular-nums;
}
table.data thead th {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--canvas-soft);
}
table.data tbody th { font-weight: 500; color: var(--ink); font-family: var(--mono); font-size: 0.8125rem; }
table.data tbody tr:last-child th,
table.data tbody tr:last-child td { border-bottom: 0; }
table.data td { color: var(--body); }

/* --------------------------------------------------------------------------
   12. Pricing
   -------------------------------------------------------------------------- */
.pricing {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--s-lg);
  align-items: start;
}
.tier {
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-lg);
  padding: var(--s-xl);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.tier-featured {
  background: var(--surface-dark);
  border-color: var(--surface-dark);
  color: var(--on-dark-soft);
}
.tier-featured h3 { color: var(--on-dark); }
.tier-name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-sm);
  margin-bottom: var(--s-sm);
}
.tier h3 { font-size: 1.125rem; letter-spacing: -0.01em; }
.tier-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: var(--s-base);
  font-variant-numeric: tabular-nums;
}
.tier-price b {
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.035em;
  color: var(--ink);
  line-height: 1;
}
.tier-featured .tier-price b { color: var(--on-dark); }
.tier-price span { font-size: 0.875rem; color: var(--muted); }
.tier-featured .tier-price span { color: var(--on-dark-soft); }
.tier-desc { margin-top: var(--s-sm); font-size: 0.875rem; min-height: 42px; }
.tier ul {
  margin-top: var(--s-md);
  padding-top: var(--s-md);
  border-top: 1px solid var(--hairline);
  display: grid;
  gap: 10px;
  font-size: 0.875rem;
}
.tier-featured ul { border-top-color: var(--hairline-dark); }
.tier li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 10px; }
.tier li svg { margin-top: 4px; }
.tier .btn { margin-top: var(--s-lg); }
.tier-foot {
  margin-top: auto;
  padding-top: var(--s-md);
}
.pricing-note {
  margin-top: var(--s-lg);
  font-size: 0.8125rem;
  color: var(--muted);
  text-align: center;
}

/* --------------------------------------------------------------------------
   13. FAQ
   -------------------------------------------------------------------------- */
.faq { border-top: 1px solid var(--hairline); }
.faq details {
  border-bottom: 1px solid var(--hairline);
}
.faq summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--s-base);
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M7 1v12M1 7h12' stroke='%23000' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M7 1v12M1 7h12' stroke='%23000' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;
  transition: transform 160ms ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .faq-body {
  padding-bottom: 20px;
  max-width: 68ch;
  font-size: 0.9375rem;
}

/* --------------------------------------------------------------------------
   14. Closing CTA
   -------------------------------------------------------------------------- */
.cta-band { text-align: center; }
.cta-band h2 { font-size: 2.25rem; }
.cta-band p {
  margin: var(--s-base) auto 0;
  max-width: 560px;
  font-size: 1.0625rem;
}

/* --------------------------------------------------------------------------
   15. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding-block: 64px 40px;
  background: var(--canvas);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, minmax(0, 1fr));
  gap: var(--s-xl);
}
.footer-brand p {
  margin-top: var(--s-base);
  font-size: 0.875rem;
  max-width: 34ch;
  color: var(--body);
}
.footer-col h2 {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.088em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: var(--s-sm);
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a {
  font-size: 0.875rem;
  color: var(--body);
  text-decoration: none;
}
.footer-col a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.footer-col li span { font-size: 0.875rem; color: var(--muted); }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-sm) var(--s-lg);
  align-items: center;
  margin-top: var(--s-xxl);
  padding-top: var(--s-md);
  border-top: 1px solid var(--hairline);
  font-size: 0.8125rem;
  color: var(--muted);
}
.footer-base .footer-legal { margin-right: auto; }
.footer-disclaimer {
  margin-top: var(--s-base);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--muted);
  max-width: 92ch;
}

/* --------------------------------------------------------------------------
   16. Forms (contact page)
   -------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: var(--s-xxl);
  align-items: start;
}

.form-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-lg);
  padding: var(--s-xl);
}

#contactForm { margin-top: var(--s-lg); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--s-md);
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field-full { grid-column: 1 / -1; }

.field label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.field label .opt {
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0;
}

.field .hint {
  font-size: 0.75rem;
  color: var(--muted);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  padding: 11px 14px;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  color: var(--ink);
  font-size: 0.9375rem;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}
.field textarea { min-height: 132px; resize: vertical; line-height: 1.5; }
.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 3px var(--cold-tint);
}
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible { outline: none; }

.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%2357616e' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px 8px;
}

.field .err {
  display: none;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: #a3231f;
}
.field.has-error .err { display: flex; }
.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: #c2413c;
  box-shadow: 0 0 0 3px rgba(194, 65, 60, 0.12);
}

.form-consent {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  margin-top: var(--s-md);
}
.form-consent input {
  width: 18px;
  height: 18px;
  min-height: 0;
  margin-top: 2px;
  padding: 0;
  accent-color: var(--cold);
}
.form-consent label { font-size: 0.8125rem; font-weight: 400; color: var(--body); }

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-base);
  margin-top: var(--s-lg);
  padding-top: var(--s-md);
  border-top: 1px solid var(--hairline);
}
.form-actions p { font-size: 0.75rem; color: var(--muted); max-width: 34ch; }

.form-status {
  margin-bottom: var(--s-md);
  padding: 12px 14px;
  border: 1px solid var(--amber-line);
  background: var(--amber-wash);
  border-radius: var(--r-md);
  font-size: 0.8125rem;
  color: var(--amber-ink);
}
.form-status:empty { display: none; }

/* Contact aside */
.aside-card {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--s-lg);
}
.aside-card + .aside-card { margin-top: var(--s-base); }
.aside-card h2 { font-size: 1rem; letter-spacing: -0.01em; }
.aside-card h3 { font-size: 0.9375rem; }
.aside-card p { margin-top: 10px; font-size: 0.875rem; }

.timeline-list { margin-top: var(--s-base); display: grid; gap: var(--s-base); }
.timeline-list li {
  position: relative;
  padding-left: 30px;
  font-size: 0.875rem;
}
.timeline-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--cold-bright);
  background: var(--canvas);
}
.timeline-list li::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 19px;
  bottom: -20px;
  width: 1px;
  background: var(--hairline-strong);
}
.timeline-list li:last-child::after { display: none; }
.timeline-list strong { display: block; }

.contact-direct {
  display: grid;
  gap: var(--s-sm);
  margin-top: var(--s-base);
  font-size: 0.875rem;
}
.contact-direct div { display: grid; grid-template-columns: 26px minmax(0, 1fr); gap: 10px; align-items: start; }
.contact-direct svg { margin-top: 3px; }
.contact-direct a { color: var(--cold); text-decoration: underline; text-underline-offset: 3px; }

.page-head {
  padding-top: 72px;
  padding-bottom: var(--s-xxl);
  border-bottom: 1px solid var(--hairline);
  position: relative;
  overflow: hidden;
}
.page-head::before {
  content: "";
  position: absolute;
  inset: -300px 0 auto 0;
  height: 560px;
  z-index: -1;
  background: radial-gradient(50% 60% at 20% 40%, var(--cold-wash-1) 0%, rgba(255,255,255,0) 70%);
}
.page-head h1 { font-size: 2.75rem; max-width: 18ch; }
.page-head p { margin-top: var(--s-base); max-width: 58ch; font-size: 1.0625rem; }

/* --------------------------------------------------------------------------
   17. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .split { gap: var(--s-xl); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --s-section: 72px; }
  h1 { font-size: 2.75rem; }
  h2 { font-size: 1.875rem; }
  .split { grid-template-columns: minmax(0, 1fr); }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pricing { grid-template-columns: minmax(0, 1fr); }
  .contact-layout { grid-template-columns: minmax(0, 1fr); }
  .metrics { grid-template-columns: minmax(0, 1fr); }
  .scroll-hint { display: block; }
}

/* JS-enhanced mobile nav. Without JS the nav simply wraps and stays visible. */
@media (max-width: 860px) {
  .js .nav-toggle { display: inline-flex; }
  .js .site-nav { display: none; }
  .js .site-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    order: 3;
    gap: 2px;
    padding: var(--s-sm) 0 var(--s-xs);
    border-top: 1px solid var(--hairline);
  }
  .js .site-nav.is-open a { height: 42px; padding-inline: 12px; }
  .site-nav { flex-wrap: wrap; }
}

@media (max-width: 640px) {
  :root { --s-section: 64px; }
  .wrap { padding-inline: 18px; }
  h1 { font-size: 2.125rem; letter-spacing: -0.03em; }
  h2 { font-size: 1.625rem; }
  h3 { font-size: 1.1875rem; }
  .hero { padding-top: 56px; padding-bottom: 64px; }
  .hero-sub { font-size: 1.0625rem; }
  .hero .cta-row .btn { width: 100%; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-lg); }
  .js .header-actions .btn-desktop { display: none; }
  .mockup { margin-top: 36px; border-radius: var(--r-lg); }
  .mockup-body, .mockup-head { padding: 16px; }
  .mockup-foot { padding: 12px 16px; }
  .tier, .form-card { padding: var(--s-lg); }
  .page-head h1 { font-size: 2.125rem; }
  .cta-band h2 { font-size: 1.75rem; }
  .metric dd { font-size: 1.5rem; }
}

@media (max-width: 400px) {
  .mockup-head-stats { margin-left: 0; }
}

/* --------------------------------------------------------------------------
   18. Motion preferences
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  :target { scroll-margin-top: 88px; }
}

/* --------------------------------------------------------------------------
   19. Print
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .cta-band, .skip-link { display: none; }
  body { color: #000; }
  .mockup, .card, .tier { break-inside: avoid; box-shadow: none; }
}