/* ==========================================================================
   LOOPER LAB DESIGN SYSTEM
   v1.0, May 20, 2026
   Single source of truth for design tokens and component styles.
   See design-system.md for usage rules and style-guide.html for a visual reference.
   ========================================================================== */

/* ---- 1. RESET --------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }


/* ---- 2. TOKENS -------------------------------------------------------- */

:root {
  /* Color */
  --ink:           #0d1b2e;  /* primary text on light surfaces */
  --paper:         #f4f6f9;  /* default page background */
  --cream:         #e8ecf2;  /* secondary light surface (homepage About only) */
  --accent:        #1a5fd4;  /* primary brand blue */
  --accent-light:  #4d8aff;  /* accent on dark surfaces */
  --navy:          #0a1628;  /* primary dark surface */
  --navy-mid:      #112240;  /* dark surface, slightly lifted */
  --navy-card:     #0f1e35;  /* dark surface for cards */
  --navy-border:   #1e3352;  /* divider on dark surfaces */
  --muted:         #4a5e78;  /* secondary text on light */
  --muted-light:   #8fa3bc;  /* secondary text on dark */
  --border:        #ccd4e0;  /* divider on light surfaces */
  --white:         #ffffff;

  /* Typography families */
  --font-display:  'DM Serif Display', serif;  /* headlines */
  --font-mono:     'DM Mono', monospace;       /* labels, eyebrows, nav, captions */
  --font-body:     'Instrument Sans', sans-serif;

  /* Type scale (intentionally limited) */
  --fs-eyebrow:    0.7rem;     /* mono labels and eyebrows */
  --fs-mono-sm:    0.65rem;    /* footer column titles, very small mono */
  --fs-mono-md:    0.72rem;    /* tier names, CTA mono labels */
  --fs-mono-lg:    0.75rem;    /* hero eyebrow */
  --fs-body-sm:    0.875rem;
  --fs-body:       1rem;
  --fs-body-lg:    1.0625rem;  /* hero sub, bio paragraphs */
  --fs-h3:         1.4rem;     /* card titles, phase titles */
  --fs-h2-sm:      clamp(1.6rem, 2.2vw, 2rem);   /* vertical-card titles */
  --fs-h2:         clamp(2rem, 3.5vw, 3.2rem);   /* section titles */
  --fs-h1:         clamp(2.5rem, 4.2vw, 4.25rem); /* hero h1 */

  /* Spacing rhythm */
  --gutter-page:   4rem;       /* desktop side padding */
  --gutter-mobile: 1.5rem;     /* mobile side padding */
  --pad-section:   7rem;       /* vertical padding for sections */
  --pad-hero-top:  9rem;       /* hero top padding (clears fixed nav) */
  --pad-hero-bot:  5rem;
  --max-content:   1200px;     /* section-inner max-width */
  --max-prose:     700px;      /* max-width for headlines and prose */
  --max-prose-sm:  520px;      /* max-width for hero subs */

  /* Radii */
  --radius-pill:   2rem;       /* buttons, pills */
  --radius-card:   14px;       /* default card */
  --radius-card-lg:16px;       /* larger card or panel */
  --radius-sm:     8px;        /* form inputs */

  /* Shadow */
  --shadow-card:        0 12px 32px rgba(13,27,46,0.06);
  --shadow-card-hover:  0 16px 40px rgba(13,27,46,0.08);
  --shadow-nav-scrolled:0 2px 20px rgba(13,27,46,0.1);

  /* Transitions */
  --transition-fast: 0.2s;
  --transition-med:  0.3s;
  --transition-slow: 0.7s;
}


/* ---- 3. BASE ---------------------------------------------------------- */

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }


/* ---- 4. NAV ----------------------------------------------------------- */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem var(--gutter-page);
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition-med);
}
nav.scrolled { box-shadow: var(--shadow-nav-scrolled); }

.logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo svg { display: block; }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-size: var(--fs-body-sm);
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}
.nav-links a:hover { color: var(--ink); }

.nav-cta {
  background: var(--ink);
  color: var(--paper) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast) !important;
}
.nav-cta:hover { background: var(--accent) !important; color: var(--white) !important; }


/* ---- 5. SECTIONS ------------------------------------------------------ */
/* Background utility: sections default to paper (body bg). Add .dark for navy.
   The cream variant is reserved for the homepage About section only. */

section { padding: var(--pad-section) var(--gutter-page); }
section.dark  { background: var(--navy); }
section.cream { background: var(--cream); }

.section-inner { max-width: var(--max-content); margin: 0 auto; }

.section-tag {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
section.dark .section-tag { color: var(--accent-light); }

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: var(--max-prose);
}
.section-title em { font-style: italic; color: var(--accent); }
section.dark .section-title { color: #e8edf5; }
section.dark .section-title em { color: var(--accent-light); }

.section-intro {
  font-size: var(--fs-body-lg);
  color: #3a4f68;
  line-height: 1.7;
  max-width: 680px;
  margin-top: 1.25rem;
}
section.dark .section-intro { color: var(--muted-light); }


/* ---- 6. BUTTONS ------------------------------------------------------- */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent);
  color: var(--white);
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}
.btn-primary:hover { background: var(--ink); transform: translateY(-2px); }
section.dark .btn-primary:hover { background: var(--accent-light); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  color: var(--ink);
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--border);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}
.btn-secondary:hover { border-color: var(--ink); transform: translateY(-2px); }
section.dark .btn-secondary { color: #e8edf5; border-color: rgba(255,255,255,0.3); }
section.dark .btn-secondary:hover { border-color: #e8edf5; }


/* ---- 7. HERO ---------------------------------------------------------- */
/* Two hero variants:
   - .hero-grid: 2-column (homepage with visual right, tier pages with spec-card right)
   - .hero-inner: single-column left-aligned (segment pages) */

#hero {
  min-height: calc(100vh - 4rem);
  display: flex;
  align-items: center;
  padding: var(--pad-hero-top) var(--gutter-page) var(--pad-hero-bot);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 4.5rem;
  align-items: center;
  max-width: var(--max-content);
  margin: 0 auto;
  width: 100%;
}

.hero-inner {
  max-width: var(--max-content);
  margin: 0 auto;
  width: 100%;
}
.hero-content { max-width: 820px; }

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-lg);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.1s forwards;
}

h1 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  opacity: 0;
  animation: fadeUp 0.7s 0.2s forwards;
}
h1 em { font-style: italic; color: var(--accent); }

.hero-sub {
  margin-top: 1.75rem;
  font-size: var(--fs-body-lg);
  color: #3a4f68;
  line-height: 1.7;
  max-width: var(--max-prose-sm);
  opacity: 0;
  animation: fadeUp 0.7s 0.35s forwards;
}

.hero-actions {
  display: flex;
  gap: 0.85rem;
  margin-top: 2.25rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.5s forwards;
  flex-wrap: wrap;
}

/* Hero stats strip (homepage only; sits below hero CTAs) */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  opacity: 0;
  animation: fadeUp 0.7s 0.65s forwards;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--ink);
  line-height: 1;
}
.stat-num span { color: var(--accent); }
.stat-label {
  font-size: 0.8rem;
  color: #3a4f68;
  margin-top: 0.3rem;
}


/* ---- 8. HERO SPEC CARD (tier pages) ----------------------------------- */

.spec-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card-lg);
  padding: 2.25rem 2rem;
  box-shadow: 0 12px 40px rgba(13,27,46,0.06);
  opacity: 0;
  animation: fadeUp 0.7s 0.45s forwards;
  position: relative;
}
.spec-card::before {
  content: '';
  position: absolute;
  top: 0; left: 2rem; right: 2rem;
  height: 3px;
  background: var(--accent);
  border-radius: 0 0 3px 3px;
}
.spec-row { padding: 1.1rem 0; }
.spec-row + .spec-row { border-top: 1px solid var(--border); }
.spec-label {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.spec-value {
  font-family: var(--font-display);
  font-size: 1.85rem;
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.spec-value em { font-style: italic; color: var(--accent); font-size: 1.3rem; }
.spec-meta {
  font-size: var(--fs-body-sm);
  color: var(--muted);
  margin-top: 0.4rem;
  line-height: 1.5;
}


/* ---- 9. HERO LOOP VISUAL (homepage signature) ------------------------- */

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: fadeIn 1s 0.4s forwards;
}
.loop-flow { position: relative; width: 420px; height: 420px; }
.loop-svg  { position: absolute; inset: 0; width: 100%; height: 100%; }
.loop-step {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  transform: translate(-50%, -50%);
}
.loop-step-pill {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0.55rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 16px rgba(13,27,46,0.08);
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.loop-step-pill:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(13,27,46,0.12); }
.loop-step-pill.active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 6px 20px rgba(26,95,212,0.3);
}
.loop-step-icon  { font-size: 0.95rem; line-height: 1; }
.loop-step-label { font-family: var(--font-body); font-size: 0.8rem; font-weight: 600; color: var(--ink); letter-spacing: 0.01em; }
.loop-step-pill.active .loop-step-label { color: white; }
.loop-step-sub   { font-family: var(--font-mono); font-size: 0.62rem; color: var(--muted-light); letter-spacing: 0.05em; text-align: center; }
.loop-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 90px; height: 90px;
  background: var(--navy);
  border-radius: 50%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.15rem;
  box-shadow: 0 8px 32px rgba(13,27,46,0.2);
}
.loop-center-label { font-family: var(--font-display); font-size: 1rem; color: white; line-height: 1; }
.loop-center-sub   { font-family: var(--font-mono); font-size: 0.55rem; color: var(--accent-light); letter-spacing: 0.08em; text-transform: uppercase; }
.loop-path      { stroke-dasharray: 8 6; animation: dashMove 30s linear infinite; }
.loop-arrow-dot { animation: orbitDot 4s linear infinite; }
@keyframes dashMove { to { stroke-dashoffset: -280; } }


/* ---- 10. PAIN CARDS (segment pages) ---------------------------------- */

.pain-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 3.5rem;
}
.pain-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 2rem 1.85rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.pain-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.pain-label {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.pain-body {
  font-size: var(--fs-body);
  color: var(--ink);
  line-height: 1.7;
}


/* ---- 11. INSIDER PULLOUT (segment pages, dark) ------------------------ */

.pullout-wrap { margin-top: 3rem; max-width: 920px; }
.pullout-quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: #e8edf5;
  position: relative;
  padding-left: 2.5rem;
}
.pullout-quote::before {
  content: '\201C';
  position: absolute;
  left: 0;
  top: -0.5rem;
  font-size: 4.5rem;
  line-height: 1;
  color: var(--accent-light);
  font-style: italic;
}
.pullout-attribution {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-lg);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-top: 2rem;
  padding-left: 2.5rem;
}


/* ---- 12. SYSTEM ROWS (numbered horizontal rows, dark) ----------------- */

.systems-list { display: flex; flex-direction: column; margin-top: 4rem; }
.system-row {
  display: flex;
  gap: 2rem;
  padding: 2rem 0.5rem;
  border-top: 1px solid var(--navy-border);
  text-decoration: none;
  color: inherit;
  align-items: center;
  transition: background var(--transition-fast);
}
.system-row:last-child { border-bottom: 1px solid var(--navy-border); }
.system-row:hover { background: rgba(77,138,255,0.04); }
.system-row:hover .system-row-arrow { transform: translateX(4px); color: #e8edf5; }
.system-row:hover .system-row-name  { color: #ffffff; }
.system-row-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--accent);
  line-height: 1;
  min-width: 52px;
  letter-spacing: -0.01em;
}
.system-row-body { flex: 1; display: flex; flex-direction: column; gap: 0.65rem; min-width: 0; }
.system-row-head { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; }
.system-row-name {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: #e8edf5;
  line-height: 1.2;
  letter-spacing: -0.01em;
  transition: color var(--transition-fast);
}
.system-row-desc {
  font-size: 0.9rem;
  color: var(--muted-light);
  line-height: 1.65;
  margin: 0;
  max-width: 760px;
}
.system-row-arrow {
  color: var(--accent-light);
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
  transition: transform var(--transition-med), color var(--transition-fast);
}


/* ---- 13. TIER COLUMNS (homepage How We Work + segment pages how-most-start)
   Works in both light and dark contexts; use .featured for highlighting. ---- */

.tier-cols {
  display: grid;
  grid-template-columns: repeat(var(--tier-col-count, 3), 1fr);
  gap: 3rem;
  margin-top: 3rem;
}
/* Homepage variant: tier-cols sits inside a 1fr/2fr how-we-work-grid */
.how-we-work-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}
.how-we-work-grid .tier-cols {
  border-left: 1px solid rgba(255,255,255,0.12);
  padding-left: 3rem;
  margin-top: 0;
}

.tier-col { display: flex; flex-direction: column; position: relative; }

/* .featured modifier: highlighted entry tier, used on segment "how most start" */
.tier-col.featured {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card-lg);
  padding: 2.5rem;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  overflow: hidden;
}
.tier-col.featured::before {
  content: '';
  position: absolute;
  top: 0; left: 2.5rem; right: 2.5rem;
  height: 3px;
  background: var(--accent);
  border-radius: 0 0 3px 3px;
}
a.tier-col.featured:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--accent); }
section.dark .tier-col.featured { background: var(--navy-card); border-color: var(--navy-border); }

.tier-name {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-md);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
section.dark .tier-name { color: var(--accent-light); }

.tier-descriptor {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  font-style: italic;
}
section.dark .tier-descriptor { color: #e8edf5; }
.tier-col.featured .tier-descriptor { font-style: normal; font-size: 2rem; }

.tier-context {
  font-size: var(--fs-body-sm);
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}
section.dark .tier-context { color: #a8c4e0; }
.tier-col.featured .tier-context { font-size: var(--fs-body); color: var(--ink); }

.tier-length {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-top: auto;
  margin-bottom: 1rem;
}
section.dark .tier-length { color: rgba(168,196,224,0.65); }
.tier-col.featured .tier-length {
  font-size: var(--fs-body-sm);
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.tier-cta {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-md);
  letter-spacing: 0.05em;
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: gap var(--transition-fast), color var(--transition-fast);
  align-self: flex-start;
}
.tier-cta span { font-size: 0.9rem; }
.tier-cta:hover { gap: 0.7rem; }
section.dark .tier-cta { color: var(--accent-light); }


/* ---- 14. TIER ALTERNATIVES (segment pages "if different") ------------- */

.tier-alternatives { padding: 0.5rem 0; display: flex; flex-direction: column; justify-content: center; }
.tier-alternatives-label {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.tier-alternatives-body {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.75;
}
.tier-alternatives-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* Layout container that pairs a featured tier with alternatives */
.tier-start-wrap {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: stretch;
}


/* ---- 15. TIER CARDS (Read / Yardage Book "systems built") ------------- */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(var(--card-count, 3), 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}
.tier-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 2rem 1.85rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.tier-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-med);
}
.tier-card[href]:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--accent);
}
.tier-card[href]:hover::after { transform: scaleX(1); }
.tier-card.no-link { cursor: default; }
.tier-card.no-link::after { display: none; }

.tier-card-name {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 0.85rem;
}
.tier-card-desc {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}
.tier-card-cta {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-md);
  letter-spacing: 0.05em;
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
  margin-top: auto;
}
.tier-card-cta span { font-size: 0.9rem; }

.tier-footnote {
  font-size: var(--fs-body-sm);
  color: var(--muted);
  text-align: center;
  margin-top: 2.5rem;
  font-style: italic;
}


/* ---- 16. VERTICAL CARDS (homepage "who we serve") -------------------- */

.verticals-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 4rem; }
.vertical-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-card-lg);
  padding: 3rem; text-decoration: none; color: inherit;
  display: flex; flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  position: relative; overflow: hidden;
}
.vertical-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition-med);
}
.vertical-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--accent); }
.vertical-card:hover::after { transform: scaleX(1); }
.vertical-card-tag {
  font-family: var(--font-mono); font-size: var(--fs-eyebrow); letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 1.5rem;
}
.vertical-card-title {
  font-family: var(--font-display); font-size: var(--fs-h2-sm); line-height: 1.15;
  letter-spacing: -0.02em; color: var(--ink); margin-bottom: 1rem;
}
.vertical-card-title em { font-style: italic; color: var(--accent); }
.vertical-card-desc { font-size: 0.95rem; color: var(--muted); line-height: 1.7; margin-bottom: 1.75rem; }
.vertical-card-list { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 2rem; padding-left: 0; }
.vertical-card-list li {
  display: flex; align-items: flex-start; gap: 0.6rem;
  font-size: var(--fs-body-sm); color: var(--ink); line-height: 1.5;
}
.vertical-card-list li::before {
  content: '\2713'; color: var(--accent); font-family: var(--font-mono);
  font-size: 0.8rem; flex-shrink: 0; margin-top: 0.1rem;
}
.vertical-card-cta {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.05em;
  color: var(--accent); margin-top: auto; font-weight: 500;
  display: flex; align-items: center; gap: 0.4rem; transition: gap var(--transition-fast);
}
.vertical-card:hover .vertical-card-cta { gap: 0.7rem; }
.vertical-card-cta span { font-size: 1rem; }


/* ---- 17. PHASES (horizontal timeline, tier pages "how it runs") ------ */

.phases {
  display: grid;
  grid-template-columns: repeat(var(--phase-count, 3), 1fr);
  gap: 0;
  margin-top: 4rem;
  position: relative;
}
.phase { position: relative; padding: 0 1.5rem; }
.phase:first-child { padding-left: 0; }
.phase:last-child  { padding-right: 0; }
.phase-marker { display: flex; align-items: center; margin-bottom: 1.5rem; position: relative; }
.phase-dot {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; z-index: 2; position: relative;
}
.phase-line { flex: 1; height: 2px; background: var(--border); margin-left: 0.5rem; }
.phase:last-child .phase-line { display: none; }
.phase-label {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.phase-title { font-family: var(--font-display); font-size: var(--fs-h3); line-height: 1.2; color: var(--ink); margin-bottom: 0.85rem; }
.phase-desc  { font-size: 0.95rem; color: var(--muted); line-height: 1.65; }


/* ---- 18. STEPS (vertical timeline, segment pages "the engagement") --- */

.steps {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  max-width: 900px;
  position: relative;
}
.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 1.75rem 0;
  position: relative;
}
.step + .step { border-top: 1px solid var(--border); }
section.dark .step + .step { border-top-color: var(--navy-border); }

.step-marker { display: flex; flex-direction: column; align-items: center; position: relative; }
.step-dot {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; z-index: 2; position: relative;
}
section.dark .step-dot { background: var(--navy-card); border-color: var(--accent-light); color: var(--accent-light); }

.step-body  { padding-top: 0.25rem; }
.step-label {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
section.dark .step-label { color: var(--muted-light); }
.step-title { font-family: var(--font-display); font-size: var(--fs-h3); line-height: 1.25; color: var(--ink); margin-bottom: 0.85rem; }
section.dark .step-title { color: #e8edf5; }
.step-desc  { font-size: var(--fs-body); color: var(--muted); line-height: 1.75; }
section.dark .step-desc { color: var(--muted-light); }


/* ---- 19. WHAT'S INCLUDED (tier pages, dark, checklist) --------------- */

.includes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem 3rem; margin-top: 3.5rem; }
.includes-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  font-size: var(--fs-body);
  color: #d8e4f2;
  line-height: 1.55;
  padding: 0.65rem 0;
}
.includes-check {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(77,138,255,0.18);
  color: var(--accent-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 1px;
}
.includes-intro { font-size: var(--fs-body); color: var(--muted-light); line-height: 1.7; max-width: 640px; margin-top: 1rem; }


/* ---- 20. PRICING (tier pages) ---------------------------------------- */

.pricing-wrap {
  margin-top: 4rem;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}
.pricing-headline {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.pricing-headline em {
  font-style: italic;
  color: var(--accent);
  font-size: 0.6em;
  vertical-align: 0.35em;
  margin: 0 0.3rem;
}
.pricing-sub {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-lg);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 1rem;
}
.pricing-blocks { display: flex; flex-direction: column; gap: 1.75rem; }
.pricing-block { border-left: 3px solid var(--accent); padding-left: 1.5rem; }
.pricing-block-label {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.65rem;
}
.pricing-block-body { font-size: var(--fs-body); color: var(--ink); line-height: 1.7; }


/* ---- 21. WHO IT'S FOR (tier pages, 2-col fits/not) ------------------- */

.who-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 3.5rem; }
.who-col {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 2rem 1.85rem;
}
.who-col-header {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.who-col.fits .who-col-header { color: var(--accent); }
.who-list { list-style: none; display: flex; flex-direction: column; gap: 1rem; }
.who-item { display: flex; align-items: flex-start; gap: 0.85rem; font-size: 0.95rem; color: var(--ink); line-height: 1.6; }
.who-icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-mono-lg);
  font-weight: 700;
  margin-top: 2px;
}
.who-col.fits .who-icon { background: rgba(26,95,212,0.12); color: var(--accent); }
.who-col.not  .who-icon { background: rgba(74,94,120,0.12); color: var(--muted); }


/* ---- 22. ENTRY PARAGRAPHS (Loop "how it works") ---------------------- */

.entry-paras { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 3.5rem; }
.entry-para {
  font-size: var(--fs-body-lg);
  color: var(--ink);
  line-height: 1.75;
  padding: 1.5rem 0;
  border-top: 2px solid var(--accent);
}
.entry-para-label {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}


/* ---- 23. FAQs -------------------------------------------------------- */

.faqs { margin-top: 3.5rem; max-width: 800px; }
.faq-item { padding: 1.85rem 0; border-bottom: 1px solid var(--border); }
.faq-item:first-child { padding-top: 0; }
.faq-item:last-child  { border-bottom: none; }
.faq-q {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 0.85rem;
}
.faq-q::before {
  content: 'Q.';
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-right: 0.6rem;
  letter-spacing: 0.04em;
  font-style: normal;
}
.faq-a { font-size: var(--fs-body); color: var(--muted); line-height: 1.75; padding-left: 1.95rem; }


/* ---- 24. ABOUT / BIO BLOCK ------------------------------------------- */
/* Used on homepage About section and on segment pages for the operator bio.
   Photo + offset accent badge + body copy + values list. */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
  align-items: center;
  margin-top: 3.5rem;
}
.about-visual { position: relative; }
.about-photo-frame {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--border);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}
.about-photo-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about-photo-placeholder {
  width: 100%; height: 100%;
  background: linear-gradient(135deg, #dce3ee 0%, #c8d3e4 100%);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1rem;
}
.about-photo-placeholder .icon {
  width: 64px; height: 64px;
  background: var(--border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
}
.about-photo-placeholder p {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  color: var(--muted);
  letter-spacing: 0.1em;
}
.about-badge {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--accent);
  color: white;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  line-height: 1.5;
  letter-spacing: 0.05em;
}
.about-badge strong {
  display: block;
  font-size: 1.4rem;
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}
.about-body p {
  font-size: var(--fs-body);
  color: #3a4f68;
  line-height: 1.8;
  margin-bottom: 1.25rem;
}
.about-body p strong { color: var(--ink); font-weight: 600; }
.about-values { display: flex; flex-direction: column; gap: 1rem; margin-top: 2rem; }
.value-item { display: flex; gap: 1rem; align-items: flex-start; }
.value-dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; margin-top: 0.5rem; flex-shrink: 0; }
.value-item p { font-size: 0.9rem; color: var(--ink); margin: 0; line-height: 1.6; }

/* Closing serif-italic transition into CTA (used in segment-page bio) */
.bio-transition {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.45;
  color: var(--accent);
  padding-top: 1.5rem;
  margin-top: 1rem;
  border-top: 2px solid var(--accent);
  max-width: 580px;
}


/* ---- 25. FINAL CTA --------------------------------------------------- */

.final-cta-inner { text-align: center; max-width: 720px; margin: 0 auto; }
.final-cta-headline {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #e8edf5;
  margin-bottom: 1.5rem;
}
.final-cta-headline em { font-style: italic; color: var(--accent-light); }
.final-cta-sub {
  font-size: var(--fs-body-lg);
  color: var(--muted-light);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto 2.5rem;
}


/* ---- 26. CONTACT FORM (homepage; lives on dark) ---------------------- */

.contact-inner {
  max-width: var(--max-content);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-light);
}
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.07);
  border: 1.5px solid var(--navy-border);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: #e8edf5;
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(143,163,188,0.5); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent-light); background: rgba(255,255,255,0.1); }
.form-group select option { background: var(--navy-mid); color: #e8edf5; }
.form-group textarea { resize: vertical; min-height: 100px; }
.field-error { border-color: #ff6b6b !important; }

.btn-submit {
  background: var(--accent);
  color: white;
  padding: 0.95rem 2rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  align-self: flex-start;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  letter-spacing: 0.01em;
}
.btn-submit:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,95,212,0.3); }


/* ---- 27. FOOTER ------------------------------------------------------ */

footer {
  background: var(--navy);
  padding: 3rem var(--gutter-page) 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  border-top: 1px solid var(--navy-border);
}
footer .logo { color: #e8edf5; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 3rem; }
.footer-col-title {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 1.25rem;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-lg);
  color: var(--muted-light);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: #e8edf5; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 1.75rem; border-top: 1px solid var(--navy-border); }
.footer-copy { font-family: var(--font-mono); font-size: var(--fs-eyebrow); color: #2a4a6e; letter-spacing: 0.05em; }


/* ---- 28. ANIMATIONS -------------------------------------------------- */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.reveal { opacity: 0; transform: translateY(20px); transition: opacity var(--transition-slow), transform var(--transition-slow); }
.reveal.visible { opacity: 1; transform: translateY(0); }


/* ---- 29. RESPONSIVE -------------------------------------------------- */

@media (max-width: 960px) {
  nav { padding: 1rem var(--gutter-mobile); }
  .nav-links { display: none; }
  section { padding: 4rem var(--gutter-mobile); }

  #hero { padding: 6rem var(--gutter-mobile) 3rem; min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  h1 { font-size: clamp(2rem, 8vw, 3rem); }
  .hero-actions { flex-direction: row; gap: 0.6rem; }
  .hero-visual { display: none; }
  .hero-stats { grid-template-columns: 1fr; gap: 1.25rem; }

  .spec-card { padding: 1.75rem 1.5rem; }
  .section-title { font-size: clamp(1.6rem, 6vw, 2.5rem); }

  .pain-grid { grid-template-columns: 1fr; gap: 1rem; margin-top: 2.5rem; }
  .pullout-quote { font-size: 1.35rem; padding-left: 1.75rem; }
  .pullout-quote::before { font-size: 3rem; }
  .pullout-attribution { padding-left: 1.75rem; }

  .systems-list { margin-top: 3rem; }
  .system-row { gap: 1.25rem; padding: 1.5rem 0; align-items: flex-start; }
  .system-row-num { font-size: 1.4rem; min-width: 36px; padding-top: 0.15rem; }
  .system-row-head { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .system-row-name { font-size: 1.15rem; }
  .system-row-desc { font-size: 0.85rem; }
  .system-row-arrow { display: none; }

  .how-we-work-grid { grid-template-columns: 1fr; gap: 2rem; }
  .how-we-work-grid .tier-cols { border-left: none; padding-left: 0; border-top: 1px solid rgba(255,255,255,0.12); padding-top: 2rem; }
  .tier-cols { grid-template-columns: 1fr; gap: 2rem; }
  .tier-col.featured { padding: 2rem 1.75rem; }
  .tier-col.featured .tier-descriptor { font-size: 1.65rem; }
  .tier-start-wrap { grid-template-columns: 1fr; gap: 2rem; margin-top: 2.5rem; }

  .cards-grid { grid-template-columns: 1fr; gap: 1rem; margin-top: 2.5rem; }
  .verticals-grid { grid-template-columns: 1fr; }
  .vertical-card { padding: 2.5rem; }

  .phases { grid-template-columns: 1fr; gap: 2rem; margin-top: 2.5rem; }
  .phase { padding: 0; }
  .phase-line { display: none; }

  .steps { margin-top: 2.5rem; }
  .step { grid-template-columns: 56px 1fr; gap: 1.25rem; padding: 1.5rem 0; }
  .step-dot { width: 36px; height: 36px; font-size: 0.8rem; }
  .step-title { font-size: 1.2rem; }

  .includes-grid { grid-template-columns: 1fr; gap: 0.85rem; margin-top: 2.5rem; }

  .pricing-wrap { grid-template-columns: 1fr; gap: 2.5rem; }
  .pricing-headline { font-size: clamp(2.5rem, 12vw, 3.5rem); }

  .who-grid { grid-template-columns: 1fr; gap: 1.25rem; margin-top: 2.5rem; }

  .entry-paras { grid-template-columns: 1fr; gap: 2rem; margin-top: 2.5rem; }

  .faqs { margin-top: 2.5rem; }
  .faq-q { font-size: 1.125rem; }
  .faq-a { padding-left: 0; }

  .about-grid { grid-template-columns: 1fr; gap: 3rem; margin-top: 2.5rem; }
  .about-badge { display: none; }
  .about-photo-frame { max-width: 320px; }
  .bio-transition { font-size: 1.125rem; }

  .contact-inner { grid-template-columns: 1fr; gap: 3rem; }
  .form-row { grid-template-columns: 1fr; }

  footer { padding: 2.5rem var(--gutter-mobile); gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

/* Dark variant for entry-paras (used on system pages with on-navy outcome blocks). */
section.dark .entry-para { color: #e8edf5; border-top-color: var(--accent-light); }
section.dark .entry-para-label { color: var(--accent-light); }


/* Final CTA on a paper/light section (e.g. the systems hub) needs dark text. */
section:not(.dark) .final-cta-headline { color: var(--ink); }
section:not(.dark) .final-cta-sub { color: var(--muted); }

/* Cap footer content to match --max-content like every other section. */
.footer-grid, .footer-bottom { max-width: var(--max-content); margin-left: auto; margin-right: auto; width: 100%; }

/* Center the capped footer children within the flex column. */
footer { align-items: center; }