/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Book-cover palette */
  --charcoal: #1a2228;
  --teal-dark: #1a4840;
  --teal: #2d8a78;
  --teal-light: #3daa96;
  --amber: #d4834a;
  --amber-light: #e89842;
  --blue-steel: #5a8fb5;
  --forest: #2d6e47;
  --cream: #f5f0e8;
  --cream-dark: #ede6d6;
  --white: #ffffff;
  --text-dark: #1a1a1a;
  --text-mid: #444444;
  --text-light: #777777;
  --border: #d8d0c0;
  /* Backwards-compat aliases */
  --green-deep: var(--charcoal);
  --green-mid: var(--teal-dark);
  --green-light: var(--forest);
  --green-accent: var(--teal);
  --gold: var(--amber);
  --gold-light: var(--amber-light);
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --max: 1200px;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-serif); line-height: 1.2; }
.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
}
.container { max-width: var(--max); margin: 0 auto; padding: 0 2rem; }
.text-center { text-align: center; }
.section { padding: 6rem 0; }
.section-sm { padding: 4rem 0; }

/* ===== NAV ===== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(26, 34, 40, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: box-shadow 0.3s;
}
nav.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.4); }
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 2rem;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-serif); font-size: 1.1rem; font-weight: 700; color: var(--white);
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-logo .logo-mark {
  width: 36px; height: 36px;
  background: var(--teal);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-weight: 700; font-size: 1.1rem; color: var(--white);
}
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a { color: rgba(255,255,255,0.75); font-size: 0.875rem; font-weight: 500; letter-spacing: 0.02em; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-cta { background: var(--teal) !important; color: var(--white) !important; padding: 0.5rem 1.25rem !important; border-radius: 4px; font-weight: 600 !important; transition: background 0.2s !important; }
.nav-cta:hover { background: var(--teal-light) !important; }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-hamburger span { display: block; width: 24px; height: 2px; background: var(--white); transition: 0.3s; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.875rem 2rem; border-radius: 4px;
  font-weight: 600; font-size: 0.9rem; letter-spacing: 0.02em;
  transition: all 0.2s; cursor: pointer; border: none;
}
.btn-primary { background: var(--teal); color: var(--white); }
.btn-primary:hover { background: var(--teal-light); transform: translateY(-1px); }
.btn-amber { background: var(--amber); color: var(--white); }
.btn-amber:hover { background: var(--amber-light); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--white); border: 1.5px solid rgba(255,255,255,0.4); }
.btn-outline:hover { border-color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.05); }
.btn-green { background: var(--forest); color: var(--white); }
.btn-green:hover { background: var(--teal); transform: translateY(-1px); }
.btn-dark { background: var(--charcoal); color: var(--white); }
.btn-dark:hover { background: var(--teal-dark); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  background: var(--charcoal);
  display: flex; align-items: center; position: relative; overflow: hidden; padding-top: 68px;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(45,138,120,0.2) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 15% 80%, rgba(212,131,74,0.08) 0%, transparent 50%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: var(--max); margin: 0 auto; padding: 5rem 2rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--amber-light); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1.5rem;
}
.hero-eyebrow::before { content: ''; display: block; width: 2rem; height: 2px; background: var(--amber); }
.hero h1 { font-size: clamp(2.5rem, 5vw, 4rem); color: var(--white); line-height: 1.1; margin-bottom: 1.5rem; }
.hero h1 em { font-style: normal; color: var(--teal-light); }
.hero-subtitle { font-size: 1.15rem; color: rgba(255,255,255,0.65); max-width: 520px; margin-bottom: 2.5rem; line-height: 1.7; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-cover-wrap {
  display: flex; flex-direction: column; align-items: center; gap: 1.5rem;
}
.hero-cover-img {
  width: 100%; max-width: 320px; border-radius: 8px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6), 0 4px 16px rgba(0,0,0,0.4);
  display: block;
}
.hero-order-btn {
  width: 100%; max-width: 320px; text-align: center; font-size: 1rem; padding: 1rem 2rem;
}

/* ===== TICKER ===== */
.ticker { background: var(--teal); padding: 0.75rem 0; overflow: hidden; }
.ticker-track { display: flex; gap: 3rem; animation: ticker 35s linear infinite; white-space: nowrap; }
.ticker-item { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--white); display: flex; align-items: center; gap: 1rem; flex-shrink: 0; }
.ticker-item::before { content: '✦'; font-size: 0.6rem; opacity: 0.7; }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ===== WORLDVIEW ===== */
.worldview { background: var(--cream); padding: 6rem 0; }
.worldview-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 2rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center;
}
.worldview-label { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--amber); margin-bottom: 1rem; }
.worldview h2 { font-size: clamp(2rem, 3.5vw, 2.75rem); color: var(--charcoal); margin-bottom: 1.5rem; }
.worldview-lead { font-size: 1.15rem; color: var(--text-mid); line-height: 1.75; margin-bottom: 1.5rem; }
.worldview p { color: var(--text-mid); line-height: 1.75; margin-bottom: 1rem; }
.worldview-shift { display: flex; flex-direction: column; gap: 1rem; }
.shift-item {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem;
  padding: 1.25rem; background: var(--white); border-radius: 8px;
  border: 1px solid var(--border); border-left: 3px solid var(--teal);
}
.shift-from { font-size: 0.875rem; color: var(--text-light); text-decoration: line-through; }
.shift-arrow { font-size: 1.2rem; color: var(--amber); font-weight: 700; }
.shift-to { font-size: 0.875rem; font-weight: 600; color: var(--teal-dark); }

/* ===== WHEEL SECTION ===== */
.wheel-section { background: var(--charcoal); padding: 6rem 0; }
.wheel-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 2rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center;
}
.wheel-content .eyebrow { color: var(--teal-light); margin-bottom: 1rem; }
.wheel-content h2 { font-size: clamp(2rem, 3vw, 2.5rem); color: var(--white); margin-bottom: 1.25rem; }
.wheel-content p { color: rgba(255,255,255,0.65); line-height: 1.75; margin-bottom: 1rem; }
.wheel-legend { list-style: none; margin-top: 1.5rem; display: flex; flex-direction: column; gap: 0.6rem; }
.wheel-legend li { display: flex; align-items: center; gap: 0.75rem; font-size: 0.9rem; color: rgba(255,255,255,0.8); }
.wheel-legend .dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.wheel-svg-wrap { display: flex; justify-content: center; align-items: center; }
.wheel-svg-wrap svg { max-width: 440px; width: 100%; filter: drop-shadow(0 20px 60px rgba(0,0,0,0.4)); }

/* ===== PRINCIPLES ===== */
.principles { background: var(--white); padding: 6rem 0; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-header h2 { font-size: clamp(2rem, 3.5vw, 2.75rem); color: var(--charcoal); margin-bottom: 1rem; }
.section-header p { font-size: 1.1rem; color: var(--text-mid); max-width: 600px; margin: 0 auto; }
.principles-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; }
.principle-card {
  border: 1px solid var(--border); border-radius: 12px; padding: 2rem;
  transition: all 0.3s; cursor: pointer; position: relative; overflow: hidden; background: var(--white);
  text-decoration: none; display: block; color: inherit;
}
.principle-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  transform: scaleX(0); transform-origin: left; transition: transform 0.3s;
}
.principle-card:hover { border-color: transparent; box-shadow: 0 8px 30px rgba(0,0,0,0.1); transform: translateY(-3px); }
.principle-card:hover::before { transform: scaleX(1); }
/* Individual principle colors */
.p1::before { background: #2d8a78; } .p1:hover { border-color: #2d8a78; }
.p2::before { background: #d4834a; } .p2:hover { border-color: #d4834a; }
.p3::before { background: #5a8fb5; } .p3:hover { border-color: #5a8fb5; }
.p4::before { background: #2d6e47; } .p4:hover { border-color: #2d6e47; }
.p5::before { background: #8a6d2d; } .p5:hover { border-color: #8a6d2d; }
.p6::before { background: #1a6878; } .p6:hover { border-color: #1a6878; }
.p7::before { background: #8a3d2d; } .p7:hover { border-color: #8a3d2d; }

.principle-num { font-family: var(--font-serif); font-size: 3rem; font-weight: 700; color: var(--cream-dark); line-height: 1; margin-bottom: 0.75rem; transition: color 0.3s; }
.principle-card:hover .principle-num { opacity: 0.4; }
.p1:hover .principle-num { color: #2d8a78; }
.p2:hover .principle-num { color: #d4834a; }
.p3:hover .principle-num { color: #5a8fb5; }
.p4:hover .principle-num { color: #2d6e47; }
.p5:hover .principle-num { color: #8a6d2d; }
.p6:hover .principle-num { color: #1a6878; }
.p7:hover .principle-num { color: #8a3d2d; }

.principle-tag { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber); margin-bottom: 0.75rem; }
.principle-card h3 { font-size: 1.2rem; color: var(--charcoal); margin-bottom: 0.75rem; line-height: 1.3; }
.principle-card p { font-size: 0.9rem; color: var(--text-mid); line-height: 1.6; }
.principle-tools { margin-top: 1.25rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tool-pill { display: inline-block; padding: 0.25rem 0.75rem; background: var(--cream); border: 1px solid var(--border); border-radius: 100px; font-size: 0.7rem; color: var(--text-mid); font-weight: 500; }
.principle-arrow { margin-top: 1.25rem; font-size: 0.8rem; font-weight: 600; color: var(--teal); display: flex; align-items: center; gap: 0.3rem; }

/* ===== DIAGNOSTIC ===== */
.diagnostic { background: var(--teal-dark); padding: 5rem 0; position: relative; overflow: hidden; }
.diagnostic::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 70% 70% at 80% 50%, rgba(45,138,120,0.3) 0%, transparent 60%); }
.diagnostic-inner { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 0 2rem; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.diagnostic-content h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); color: var(--white); margin-bottom: 1rem; }
.diagnostic-content p { color: rgba(255,255,255,0.7); font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem; }
.diagnostic-form { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15); border-radius: 12px; padding: 2.5rem; }
.diagnostic-form h3 { font-family: var(--font-sans); font-size: 1rem; font-weight: 600; color: var(--white); margin-bottom: 0.5rem; }
.diagnostic-form p { color: rgba(255,255,255,0.6); font-size: 0.875rem; margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1rem; }
.form-group input, .form-group select { width: 100%; padding: 0.875rem 1rem; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.2); border-radius: 6px; color: var(--white); font-size: 0.9rem; font-family: var(--font-sans); transition: border-color 0.2s; appearance: none; }
.form-group input::placeholder { color: rgba(255,255,255,0.4); }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--teal-light); }
.form-group select option { background: var(--teal-dark); color: var(--white); }
.form-fine { font-size: 0.75rem; color: rgba(255,255,255,0.4); margin-top: 0.75rem; text-align: center; }

/* ===== FRAMEWORKS / RESOURCES ===== */
.frameworks { background: var(--cream); padding: 6rem 0; }
.frameworks-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
.framework-card { background: var(--white); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all 0.3s; }
.framework-card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.1); transform: translateY(-3px); }
.framework-img { height: 200px; overflow: hidden; background: var(--cream-dark); display: flex; align-items: center; justify-content: center; }
.framework-img img { width: 100%; height: 100%; object-fit: cover; }
.framework-img-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 3rem; background: linear-gradient(135deg, var(--cream-dark), var(--cream)); }
.framework-body { padding: 1.5rem; }
.framework-tag { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal); margin-bottom: 0.5rem; }
.framework-body h3 { font-size: 1.1rem; color: var(--charcoal); margin-bottom: 0.5rem; }
.framework-body p { font-size: 0.875rem; color: var(--text-mid); line-height: 1.6; margin-bottom: 1rem; }
.framework-link { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; font-weight: 600; color: var(--teal); transition: gap 0.2s; }
.framework-link:hover { gap: 0.75rem; }

/* ===== COMPANIES ===== */
.companies { background: var(--white); padding: 5rem 0; border-top: 1px solid var(--border); }
.companies-intro { text-align: center; max-width: 680px; margin: 0 auto 3rem; }
.companies-intro h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); color: var(--charcoal); margin-bottom: 0.75rem; }
.companies-intro p { color: var(--text-mid); font-size: 1rem; }
.companies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}
.companies-legend {
  display: flex; gap: 1.25rem; justify-content: center; flex-wrap: wrap; margin-top: 1.25rem;
}
.leg-item {
  display: flex; align-items: center; gap: 0.4rem; font-size: 0.78rem; color: var(--text-light);
}
.leg-item::before { content: ''; width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.leg-cs::before   { background: var(--teal); }
.leg-diag::before { background: #c83c3c; }
.leg-ref::before  { background: var(--border); }

.company-card {
  border: 1px solid var(--border); border-radius: 10px; padding: 1.25rem 1rem;
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
  text-align: center; transition: all 0.2s; background: var(--white);
  text-decoration: none; position: relative;
}
.company-card:hover { border-color: var(--teal); box-shadow: 0 4px 16px rgba(45,138,120,0.1); transform: translateY(-2px); }
.company-card--cs  { border-color: rgba(45,138,120,0.35); }
.company-card--cs:hover { border-color: var(--teal); box-shadow: 0 4px 20px rgba(45,138,120,0.18); }
.company-card--diag { border-color: rgba(200,60,60,0.3); }
.company-card--diag:hover { border-color: #c83c3c; box-shadow: 0 4px 20px rgba(200,60,60,0.15); }

.company-logo {
  width: 64px; height: 40px; object-fit: contain; filter: grayscale(100%); opacity: 0.65; transition: all 0.2s;
}
.company-card:hover .company-logo { filter: grayscale(0%); opacity: 1; }
.company-card--cs .company-logo, .company-card--diag .company-logo { filter: grayscale(0%); opacity: 1; }

.company-name { font-size: 0.8rem; font-weight: 600; color: var(--text-mid); }
.company-tag  { font-size: 0.65rem; color: var(--text-light); padding: 0.15rem 0.5rem; background: var(--cream); border-radius: 100px; }

.co-badge {
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase;
  padding: 0.2rem 0.55rem; border-radius: 100px; margin-top: 0.1rem;
}
.co-badge--cs   { background: rgba(45,138,120,0.12); color: var(--teal); border: 1px solid rgba(45,138,120,0.3); }
.co-badge--diag { background: rgba(200,60,60,0.1); color: #c83c3c; border: 1px solid rgba(200,60,60,0.3); }

/* ===== TECHNOLOGY & PROGRESS ===== */
.tech-progress { background: #0e1519; padding: 6rem 0; position: relative; overflow: hidden; }
.tech-progress::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(45,138,120,0.15) 0%, transparent 65%); pointer-events: none; }
.tech-inner { max-width: var(--max); margin: 0 auto; padding: 0 2rem; position: relative; z-index: 1; }

.tech-header { text-align: center; max-width: 720px; margin: 0 auto 4rem; }
.tech-header h2 { font-size: clamp(1.9rem, 3.5vw, 2.8rem); color: var(--white); margin-bottom: 1.25rem; line-height: 1.2; }
.tech-lead { font-size: 1.05rem; color: rgba(255,255,255,0.6); line-height: 1.8; }

.builders-solvers { display: grid; grid-template-columns: 1fr auto 1fr; gap: 2rem; align-items: center; margin-bottom: 4rem; }
.vision-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; padding: 2rem; }
.vision-card.vision--solvers { border-color: rgba(45,138,120,0.35); }
.vision-card.vision--builders { border-color: rgba(196,160,80,0.35); }
.vision-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 0.75rem; }
.vision--solvers .vision-label { color: var(--teal-light); }
.vision--builders .vision-label { color: var(--amber); }
.vision-card p { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.7; margin: 0; }
.vision-bridge { text-align: center; padding: 0 1rem; }
.bridge-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.35); margin-bottom: 0.5rem; }
.bridge-sym { font-size: 1.75rem; color: rgba(255,255,255,0.2); line-height: 1; margin-bottom: 0.5rem; }
.bridge-note { font-size: 0.78rem; color: rgba(255,255,255,0.35); line-height: 1.6; max-width: 140px; margin: 0 auto; }

.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-bottom: 4rem; }
.tech-card { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.09); border-radius: 12px; padding: 2rem; transition: border-color 0.2s, background 0.2s; }
.tech-card:hover { border-color: rgba(45,138,120,0.4); background: rgba(45,138,120,0.06); }
.tech-card-icon { width: 40px; height: 40px; margin-bottom: 1.25rem; }
.tech-card-icon svg { width: 100%; height: 100%; }
.tech-card h3 { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 0.75rem; }
.tech-card p { font-size: 0.88rem; color: rgba(255,255,255,0.55); line-height: 1.75; margin: 0; }

.tech-quote { text-align: center; max-width: 680px; margin: 0 auto; border: none; padding: 0; background: none; }
.tech-quote p, .tech-quote { font-family: var(--font-serif); font-size: clamp(1.1rem, 2vw, 1.4rem); font-style: italic; color: rgba(255,255,255,0.75); line-height: 1.6; }
.tech-quote cite { display: block; margin-top: 1rem; font-family: var(--font-sans); font-size: 0.78rem; font-style: normal; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--teal-light); }

/* ===== NEWSLETTER ===== */
.newsletter { background: var(--cream-dark); padding: 5rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.newsletter-inner { max-width: 680px; margin: 0 auto; padding: 0 2rem; text-align: center; }
.newsletter-icon { width: 56px; height: 56px; background: var(--charcoal); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin: 0 auto 1.5rem; font-size: 1.5rem; }
.newsletter h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); color: var(--charcoal); margin-bottom: 1rem; }
.newsletter-lead { color: var(--text-mid); font-size: 1.05rem; line-height: 1.7; margin-bottom: 2rem; }
.newsletter-form { display: flex; gap: 0.75rem; max-width: 480px; margin: 0 auto 1rem; }
.newsletter-form input { flex: 1; padding: 0.875rem 1.25rem; border: 1.5px solid var(--border); border-radius: 6px; font-family: var(--font-sans); font-size: 0.9rem; background: var(--white); color: var(--text-dark); transition: border-color 0.2s; }
.newsletter-form input:focus { outline: none; border-color: var(--teal); }
.newsletter-fine { font-size: 0.75rem; color: var(--text-light); }

/* ===== ABOUT ===== */
.about { background: var(--cream); padding: 6rem 0; }
.about-inner { max-width: var(--max); margin: 0 auto; padding: 0 2rem; display: grid; grid-template-columns: 1fr 2fr; gap: 5rem; align-items: start; }
.about-photo { position: relative; }
.about-photo-frame {
  width: 100%; aspect-ratio: 4/5; border-radius: 12px; overflow: hidden; position: relative;
  background: linear-gradient(135deg, var(--teal-dark), var(--charcoal));
}
.about-photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.about-photo-frame::after {
  content: ''; position: absolute; inset: 0;
  border: 2px solid rgba(45,138,120,0.3); border-radius: 12px; pointer-events: none;
}
.about-photo-initials { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-family: var(--font-serif); font-size: 5rem; color: rgba(255,255,255,0.2); font-weight: 700; }
.about-photo-badge { position: absolute; bottom: -1rem; right: -1rem; background: var(--teal); color: var(--white); padding: 0.75rem 1.25rem; border-radius: 8px; font-size: 0.75rem; font-weight: 700; text-align: center; line-height: 1.3; }
.about-content .eyebrow { margin-bottom: 1rem; }
.about-content h2 { font-size: clamp(2rem, 3vw, 2.5rem); color: var(--charcoal); margin-bottom: 1.5rem; }
.about-content p { color: var(--text-mid); line-height: 1.8; margin-bottom: 1.25rem; font-size: 1rem; }
.about-credentials { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 2rem 0; }
.credential { display: flex; align-items: flex-start; gap: 0.75rem; padding: 1rem; background: var(--white); border-radius: 8px; border-left: 3px solid var(--teal); }
.credential-icon { font-size: 1.25rem; flex-shrink: 0; }
.credential-text { font-size: 0.875rem; color: var(--text-mid); line-height: 1.4; }
.credential-text strong { display: block; color: var(--charcoal); margin-bottom: 0.1rem; }

/* ===== TESTIMONIALS ===== */
.testimonials { background: var(--charcoal); padding: 5rem 0; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
.testimonial-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.09); border-radius: 12px; padding: 2rem; }
.testimonial-quote { font-size: 2rem; color: var(--teal-light); line-height: 1; margin-bottom: 1rem; font-family: Georgia, serif; }
.testimonial-text { color: rgba(255,255,255,0.75); font-size: 0.95rem; line-height: 1.7; margin-bottom: 1.5rem; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.testimonial-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--teal); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--white); font-size: 0.9rem; flex-shrink: 0; }
.testimonial-name { font-weight: 600; color: var(--white); font-size: 0.9rem; }
.testimonial-role { color: rgba(255,255,255,0.45); font-size: 0.8rem; }

/* ===== SPEAKING ===== */
.speaking { background: var(--cream); padding: 5rem 0; }
.speaking-inner { max-width: var(--max); margin: 0 auto; padding: 0 2rem; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.speaking-content h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); color: var(--charcoal); margin-bottom: 1rem; }
.speaking-content p { color: var(--text-mid); line-height: 1.75; margin-bottom: 1.5rem; }
.speaking-options { display: flex; flex-direction: column; gap: 0.75rem; }
.speaking-option { display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem; background: var(--white); border: 1px solid var(--border); border-radius: 8px; transition: all 0.2s; }
.speaking-option:hover { border-color: var(--teal); box-shadow: 0 4px 12px rgba(45,138,120,0.1); }
.speaking-option-icon { width: 40px; height: 40px; background: var(--charcoal); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
.speaking-option-text strong { display: block; color: var(--charcoal); font-size: 0.9rem; margin-bottom: 0.1rem; }
.speaking-option-text span { font-size: 0.8rem; color: var(--text-light); }

/* ===== CHAPTER BANNER ===== */
.chapter-banner { background: linear-gradient(135deg, var(--teal-dark), var(--charcoal)); padding: 4rem 0; text-align: center; }
.chapter-banner h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); color: var(--teal-light); margin-bottom: 0.75rem; }
.chapter-banner p { color: rgba(255,255,255,0.65); max-width: 620px; margin: 0 auto; font-size: 1.05rem; line-height: 1.7; }

/* ===== FOOTER ===== */
footer { background: var(--charcoal); color: rgba(255,255,255,0.55); padding: 4rem 0 2rem; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 0 2rem; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand h3 { font-family: var(--font-serif); font-size: 1.25rem; color: var(--white); margin-bottom: 0.75rem; }
.footer-brand p { font-size: 0.875rem; line-height: 1.6; max-width: 280px; }
.footer-col h4 { font-family: var(--font-sans); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--white); margin-bottom: 1.25rem; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a { font-size: 0.875rem; color: rgba(255,255,255,0.5); transition: color 0.2s; }
.footer-col ul a:hover { color: var(--white); }
.footer-bottom { max-width: var(--max); margin: 0 auto; padding: 1.5rem 2rem 0; border-top: 1px solid rgba(255,255,255,0.08); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer-bottom p { font-size: 0.8rem; }
.footer-bottom a { color: var(--teal-light); }

/* ===== PRINCIPLE SUBPAGE ===== */
.principle-hero {
  min-height: 55vh; display: flex; align-items: center; position: relative; overflow: hidden;
  padding: 8rem 0 5rem;
}
.principle-hero-inner { max-width: var(--max); margin: 0 auto; padding: 0 2rem; position: relative; z-index: 1; }
.principle-hero .p-label { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(255,255,255,0.6); margin-bottom: 1rem; }
.principle-hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); color: var(--white); margin-bottom: 1.25rem; max-width: 800px; }
.principle-hero .tagline { font-size: 1.2rem; color: rgba(255,255,255,0.65); max-width: 640px; line-height: 1.7; }
.principle-body { max-width: 1100px; margin: 0 auto; padding: 5rem 2rem; }
.principle-intro { max-width: 760px; margin: 0 auto 4rem; }
.principle-intro h2 { font-size: 1.75rem; color: var(--charcoal); margin-bottom: 1rem; }
.principle-intro p { color: var(--text-mid); font-size: 1.05rem; line-height: 1.8; margin-bottom: 1rem; }
.pull-quote { border-left: 4px solid var(--teal); padding: 1rem 1.5rem; margin: 2rem 0; background: var(--cream); border-radius: 0 8px 8px 0; }
.pull-quote blockquote { font-family: var(--font-serif); font-size: 1.15rem; color: var(--charcoal); font-style: italic; line-height: 1.5; }
.pull-quote cite { font-size: 0.8rem; color: var(--text-light); font-style: normal; margin-top: 0.4rem; display: block; }

.frameworks-section { background: var(--cream); padding: 4rem 2rem; border-radius: 16px; margin-bottom: 4rem; }
.frameworks-section h2 { font-size: 1.5rem; color: var(--charcoal); margin-bottom: 0.5rem; }
.frameworks-section .sub { font-size: 0.9rem; color: var(--text-light); margin-bottom: 2rem; }
.fw-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem; }
.fw-item { background: var(--white); border: 1px solid var(--border); border-radius: 10px; padding: 1.25rem; transition: all 0.2s; }
.fw-item:hover { border-color: var(--teal); box-shadow: 0 4px 16px rgba(45,138,120,0.1); }
.fw-item-icon { font-size: 1.75rem; margin-bottom: 0.75rem; }
.fw-item h3 { font-size: 1rem; color: var(--charcoal); margin-bottom: 0.4rem; }
.fw-item p { font-size: 0.85rem; color: var(--text-mid); line-height: 1.5; }
.fw-download { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.75rem; color: var(--teal); font-weight: 600; margin-top: 0.75rem; }

.cases-section { margin-bottom: 4rem; }
.cases-section h2 { font-size: 1.5rem; color: var(--charcoal); margin-bottom: 0.5rem; }
.cases-section .sub { font-size: 0.9rem; color: var(--text-light); margin-bottom: 2rem; }
.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.case-card { border: 1px solid var(--border); border-radius: 10px; padding: 1.5rem; }
.case-logo { height: 36px; object-fit: contain; filter: grayscale(80%); margin-bottom: 1rem; }
.case-card h3 { font-size: 0.95rem; color: var(--charcoal); margin-bottom: 0.4rem; }
.case-card p { font-size: 0.85rem; color: var(--text-mid); line-height: 1.5; }

.principle-nav { display: flex; justify-content: space-between; align-items: center; padding: 2rem; border-top: 1px solid var(--border); margin-top: 2rem; }
.principle-nav a { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; font-weight: 600; color: var(--teal); }
.principle-nav a:hover { color: var(--teal-light); }
.principle-nav .center { font-size: 0.8rem; color: var(--text-light); text-align: center; }

/* ===== MOBILE ===== */
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-hamburger span { display: block; width: 24px; height: 2px; background: var(--white); transition: 0.3s; }
@media (max-width: 900px) {
  .nav-hamburger { display: flex; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--charcoal); flex-direction: column; padding: 1.5rem 2rem; gap: 1.25rem; border-top: 1px solid rgba(255,255,255,0.08); }
  .nav-links.open { display: flex; }
  .hero-inner { grid-template-columns: 1fr; padding: 3rem 1.5rem; }
  .hero-right { display: none; }
  .worldview-inner, .wheel-inner, .diagnostic-inner, .about-inner, .speaking-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .frameworks-grid, .testimonials-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .newsletter-form { flex-direction: column; }
  .about-credentials { grid-template-columns: 1fr; }
  .companies-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .builders-solvers { grid-template-columns: 1fr; }
  .vision-bridge { padding: 0.5rem 0; }
  .bridge-note { max-width: none; }
  .tech-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .frameworks-grid, .testimonials-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .container { padding: 0 1.25rem; }
  .section { padding: 4rem 0; }
  .principle-nav { flex-direction: column; gap: 1rem; }
}

/* ===== ANIMATIONS ===== */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }
.fade-up:nth-child(7) { transition-delay: 0.6s; }