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

:root {
  --dark: #222323;
  --warm-white: #efe7e4;
  --off-white: #f7f3f1;
  --mid: #7a7572;
  --border: #e0d8d4;
  --green: #37c563;
  --font-head: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--off-white);
  color: var(--dark);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: rgba(34,35,35,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(239,231,228,0.08);
  padding: 0 5vw;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--warm-white);
}

.nav-wordmark {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm-white);
}

.nav-cta {
  background: var(--warm-white);
  color: var(--dark);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 100px;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: opacity 0.18s, transform 0.18s;
  white-space: nowrap;
}
.nav-cta:hover { opacity: 0.88; transform: translateY(-1px); }

[id] { scroll-margin-top: 78px; }

.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links > a:not(.nav-cta) {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: rgba(239,231,228,0.72);
  text-decoration: none;
  transition: color 0.16s;
  white-space: nowrap;
}
.nav-links > a:not(.nav-cta):hover { color: var(--warm-white); }

.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 30px; height: 30px; padding: 0;
  flex-direction: column; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; height: 1.5px; width: 22px; background: var(--warm-white); }

@media (max-width: 960px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(34,35,35,0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: none;
    padding: 0 5vw;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    pointer-events: none;
    transition: max-height 0.3s ease, visibility 0s linear 0.3s;
  }
  .nav-links.open {
    max-height: 560px;
    padding: 8px 5vw 20px;
    border-bottom: 1px solid rgba(239,231,228,0.08);
    visibility: visible;
    pointer-events: auto;
    transition: max-height 0.3s ease, visibility 0s;
  }
  .nav-links > a:not(.nav-cta) {
    padding: 13px 0;
    font-size: 15px;
    border-bottom: 1px solid rgba(239,231,228,0.06);
  }
  .nav-links > a.nav-cta { margin-top: 16px; text-align: center; }
}

/* WHY ESSENTIA WORKS */
.why { background: var(--warm-white); padding: 100px 5vw; border-bottom: 1px solid var(--border); }
.why > h2 { max-width: 620px; margin-bottom: 20px; }
.why-lead { font-size: 17px; color: #5a5451; line-height: 1.75; max-width: 620px; margin-bottom: 48px; font-weight: 300; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
@media (max-width: 768px) { .why-grid { grid-template-columns: 1fr; gap: 32px; } }
.why-point h3 { font-family: var(--font-head); font-size: 21px; font-weight: 400; margin-bottom: 10px; }
.why-point p { font-size: 15px; color: #5a5451; line-height: 1.72; }

/* COMPANY FACTS */


/* HERO */
.hero {
  background: var(--dark);
  color: var(--warm-white);
  padding: 148px 5vw 100px;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-blueprint {
  position: absolute;
  top: 0; right: 0;
  width: 52%;
  height: 130%;
  pointer-events: none;
  opacity: 0.09;
  overflow: hidden;
  will-change: transform;
}
.hero-blueprint svg { width: 100%; height: 100%; }

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.hero-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(239,231,228,0.4);
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(40px, 6.5vw, 72px);
  line-height: 1.06;
  font-weight: 400;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.hero h1 em {
  font-style: italic;
  color: rgba(239,231,228,0.6);
}

.hero-subtagline {
  font-size: clamp(14px, 1.6vw, 16px);
  font-weight: 400;
  color: rgba(239,231,228,0.48);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 17px;
  font-weight: 300;
  line-height: 1.68;
  color: rgba(239,231,228,0.7);
  max-width: 540px;
  margin-bottom: 48px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--warm-white);
  color: var(--dark);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.18s, transform 0.18s;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: rgba(239,231,228,0.65);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  padding: 14px 28px;
  border: 1px solid rgba(239,231,228,0.18);
  border-radius: 100px;
  text-decoration: none;
  transition: border-color 0.18s, color 0.18s;
}
.btn-secondary:hover { border-color: rgba(239,231,228,0.45); color: var(--warm-white); }

/* INSIGHT */
.insight {
  background: var(--off-white);
  padding: 100px 5vw;
  position: relative;
  overflow: hidden;
}

.insight-watermark {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 400px;
  opacity: 0.045;
  pointer-events: none;
}

.insight-inner {
  max-width: 740px;
  position: relative;
  z-index: 1;
}

.insight-lead {
  font-family: var(--font-head);
  font-size: clamp(22px, 3.2vw, 36px);
  line-height: 1.4;
  font-weight: 400;
  color: var(--dark);
  margin-bottom: 28px;
}

.insight-body {
  font-size: 17px;
  font-weight: 300;
  line-height: 1.8;
  color: #5a5451;
  margin-bottom: 20px;
}

.insight-transition {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--mid);
  text-transform: uppercase;
}

/* HOW IT WORKS */
.how {
  background: var(--dark);
  padding: 80px 5vw;
  position: relative;
  overflow: hidden;
}

.how::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(239,231,228,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239,231,228,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 14px;
  display: block;
}

.how .section-label { color: rgba(239,231,228,0.3); }

.how > h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.8vw, 42px);
  font-weight: 400;
  color: var(--warm-white);
  margin-bottom: 48px;
  line-height: 1.15;
  position: relative;
  z-index: 1;
}

h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.8vw, 42px);
  font-weight: 400;
  line-height: 1.15;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(239,231,228,0.08);
  border: 1px solid rgba(239,231,228,0.08);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 48px;
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) { .pillars-grid { grid-template-columns: 1fr; } }

.pillar {
  background: var(--dark);
  padding: 36px 28px;
  transition: background 0.2s;
}
.pillar:hover { background: #2a2b2b; }

.pillar-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(239,231,228,0.22);
  margin-bottom: 18px;
}

.pillar h3 {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 400;
  color: var(--warm-white);
  margin-bottom: 12px;
  line-height: 1.2;
}

.pillar p {
  font-size: 14px;
  color: rgba(239,231,228,0.55);
  line-height: 1.7;
}

.process-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(239,231,228,0.3);
  margin-bottom: 24px;
  display: block;
  position: relative;
  z-index: 1;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(239,231,228,0.08);
  border: 1px solid rgba(239,231,228,0.08);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }

.step {
  background: rgba(255,255,255,0.025);
  padding: 30px 24px;
}

.step-num {
  font-family: var(--font-head);
  font-size: 34px;
  font-weight: 400;
  color: rgba(239,231,228,0.08);
  line-height: 1;
  margin-bottom: 14px;
}

.step h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--warm-white);
  margin-bottom: 8px;
  line-height: 1.3;
}

.step p {
  font-size: 13px;
  color: rgba(239,231,228,0.48);
  line-height: 1.65;
}

/* CONCEPTS */
.concepts {
  background: var(--dark);
  padding: 80px 0;
  border-top: 1px solid rgba(239,231,228,0.06);
}

.concepts-header {
  padding: 0 5vw;
  margin-bottom: 36px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.concepts-header .section-label { color: rgba(239,231,228,0.3); }

.concepts-header h2 {
  color: var(--warm-white);
  font-size: clamp(24px, 3.5vw, 38px);
}

.concepts-intro {
  font-size: 14px;
  color: rgba(239,231,228,0.48);
  max-width: 360px;
  line-height: 1.65;
  text-align: right;
}
@media (max-width: 600px) { .concepts-intro { text-align: left; } }

.carousel-wrap { overflow: hidden; position: relative; }

.carousel-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.4,0,0.2,1);
}

.carousel-slide { min-width: 100%; }

.carousel-slide-inner {
  margin: 0 5vw;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16/7;
  background: #181919;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bp-bg {
  position: absolute;
  inset: 0;
  opacity: 0.18;
}
.bp-bg svg { width: 100%; height: 100%; }

.wip-badge {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.wip-inner {
  border: 1px solid rgba(239,231,228,0.28);
  border-radius: 3px;
  padding: 10px 26px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(239,231,228,0.45);
  background: rgba(24,25,25,0.75);
  backdrop-filter: blur(4px);
}

.carousel-nav {
  padding: 24px 5vw 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.carousel-dots { display: flex; gap: 8px; align-items: center; }

.carousel-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(239,231,228,0.2);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  border: none; padding: 0;
}
.carousel-dot.active { background: var(--warm-white); transform: scale(1.35); }

.carousel-arrows { display: flex; gap: 10px; }

.carousel-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(239,231,228,0.18);
  background: transparent;
  color: rgba(239,231,228,0.55);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  transition: border-color 0.18s, color 0.18s, background 0.18s;
}
.carousel-btn:hover { border-color: rgba(239,231,228,0.45); color: var(--warm-white); background: rgba(239,231,228,0.05); }

.concepts-cta { padding: 36px 5vw 0; text-align: center; }

/* ABOUT */
.about {
  background: var(--warm-white);
  padding: 100px 5vw;
  border-top: 1px solid var(--border);
}

.about h2 { margin-bottom: 48px; max-width: 580px; }

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: start;
}
@media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; gap: 40px; } }

.about-story p {
  font-size: 16px;
  color: #4e4a47;
  line-height: 1.8;
  margin-bottom: 20px;
}
.about-story p:last-child { margin-bottom: 0; }

.founder-cards { display: flex; flex-direction: column; gap: 18px; }

.founder-card {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
}

.founder-avatar {
  width: 64px; height: 64px;
  background: var(--warm-white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  border: 1px solid var(--border);
}
.founder-avatar svg { width: 48px; height: 48px; }

.founder-name { font-size: 15px; font-weight: 700; margin-bottom: 3px; }

.founder-role {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 10px;
}

.founder-bio { font-size: 14px; color: #5a5451; line-height: 1.7; }

/* STARTING POINT */
.starting-point {
  background: var(--off-white);
  padding: 100px 5vw;
  border-top: 1px solid var(--border);
}

.starting-point > h2 { margin-bottom: 12px; }

.lead {
  font-size: 17px;
  color: #5a5451;
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 52px;
  font-weight: 300;
}

.tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
@media (max-width: 768px) { .tiers-grid { grid-template-columns: 1fr; } }

.tier-card {
  background: var(--warm-white);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 30px 24px;
  transition: border-color 0.18s;
}
.tier-card:hover { border-color: var(--dark); }

.tier-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 12px;
}

.tier-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }

.tier-for { font-size: 13px; font-style: italic; color: var(--mid); margin-bottom: 12px; line-height: 1.5; }

.tier-body { font-size: 14px; color: #5a5451; line-height: 1.68; }

.tier-note {
  font-size: 13px;
  color: var(--mid);
  padding: 14px 18px;
  background: var(--warm-white);
  border-radius: 4px;
  border-left: 3px solid var(--dark);
  margin-bottom: 64px;
}
.tier-note a { color: var(--dark); font-weight: 500; text-decoration: none; }
.tier-note a:hover { text-decoration: underline; }

/* Pricing */
.pricing-block { margin-bottom: 64px; }

.pricing-block h3 {
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  margin-bottom: 10px;
}

.pricing-intro {
  font-size: 15px;
  color: var(--mid);
  line-height: 1.65;
  max-width: 560px;
  margin-bottom: 32px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.price-card {
  background: var(--warm-white);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
}
.price-card.featured { background: var(--dark); color: var(--warm-white); border-color: var(--dark); }

.price-type {
  font-size: 11px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mid); margin-bottom: 8px;
}
.price-card.featured .price-type { color: rgba(239,231,228,0.38); }

.price-card h4 { font-size: 15px; font-weight: 600; margin-bottom: 10px; color: var(--dark); }
.price-card.featured h4 { color: var(--warm-white); }

.price-from { font-size: 12px; color: var(--mid); margin-bottom: 3px; }
.price-card.featured .price-from { color: rgba(239,231,228,0.42); }

.price-num {
  font-family: var(--font-head);
  font-size: 28px; font-weight: 400;
  margin-bottom: 14px; line-height: 1; color: var(--dark);
}
.price-card.featured .price-num { color: var(--warm-white); }

.price-coming { font-size: 15px; font-weight: 500; color: var(--mid); margin-bottom: 12px; font-style: italic; }

.price-includes { list-style: none; display: flex; flex-direction: column; gap: 7px; }

.price-includes li {
  font-size: 13px; color: #5a5451;
  display: flex; align-items: flex-start; gap: 8px; line-height: 1.45;
}
.price-card.featured .price-includes li { color: rgba(239,231,228,0.62); }

.price-includes li::before {
  content: '';
  display: block;
  width: 14px; height: 14px; flex-shrink: 0;
  background: var(--dark);
  border-radius: 50%; margin-top: 1px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%23efe7e4' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 10px; background-repeat: no-repeat; background-position: center;
}
.price-card.featured .price-includes li::before { background-color: rgba(239,231,228,0.15); }

.price-disclaimer {
  font-size: 12px; color: var(--mid); line-height: 1.65;
  padding: 14px 18px; background: var(--warm-white);
  border-radius: 4px; border-left: 3px solid var(--border);
}

/* FAQ */
.faq-block { }

.faq-block h3 {
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  margin-bottom: 8px;
}

.faq-intro { font-size: 15px; color: var(--mid); margin-bottom: 28px; }

.faq-list {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  background: var(--warm-white);
}
.faq-item:last-child { border-bottom: none; }

.faq-q {
  width: 100%; text-align: left;
  background: none; border: none;
  padding: 18px 22px;
  font-family: var(--font-body);
  font-size: 15px; font-weight: 500;
  color: var(--dark); cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  transition: background 0.15s;
}
.faq-q:hover { background: var(--off-white); }
.faq-q.open { background: var(--off-white); }

.faq-icon {
  width: 20px; height: 20px; flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--mid);
  transition: transform 0.25s, background 0.15s;
}
.faq-q.open .faq-icon {
  transform: rotate(45deg);
  background: var(--dark); color: var(--warm-white); border-color: var(--dark);
}

.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s cubic-bezier(0.4,0,0.2,1); }
.faq-a.open { max-height: 400px; }

.faq-a-inner {
  padding: 12px 22px 20px;
  font-size: 14px; color: #5a5451; line-height: 1.75;
}

/* BOOK */
.book {
  background: var(--dark);
  padding: 100px 5vw;
  position: relative;
  overflow: hidden;
}

.book::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(239,231,228,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239,231,228,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.book-inner { position: relative; z-index: 1; max-width: 660px; }

.book .section-label { color: rgba(239,231,228,0.3); }

.book h2 {
  color: var(--warm-white);
  font-size: clamp(30px, 4.5vw, 52px);
  margin-bottom: 16px;
}

.book-explainer {
  font-size: 16px;
  color: rgba(239,231,228,0.58);
  line-height: 1.7;
  margin-bottom: 44px;
  max-width: 480px;
  font-weight: 300;
}

.book-placeholder {
  background: rgba(239,231,228,0.04);
  border: 1px solid rgba(239,231,228,0.1);
  border-radius: 8px;
  padding: 40px;
  margin-bottom: 36px;
  text-align: center;
}

.book-placeholder p {
  font-size: 14px;
  color: rgba(239,231,228,0.38);
  line-height: 1.7;
}
.book-placeholder a { color: rgba(239,231,228,0.65); font-weight: 500; text-decoration: none; }
.book-placeholder a:hover { color: var(--warm-white); }

.book-contacts {
  display: flex; gap: 32px; flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid rgba(239,231,228,0.08);
}

.book-contact-item p:first-child {
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(239,231,228,0.3); margin-bottom: 4px;
}
.book-contact-item a,
.book-contact-item p:last-child {
  font-size: 14px; color: rgba(239,231,228,0.68); text-decoration: none;
}
.book-contact-item a:hover { color: var(--warm-white); }

/* FOOTER */
footer {
  background: #1a1b1b;
  color: rgba(239,231,228,0.38);
  padding: 30px 5vw;
  display: flex; align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap; gap: 20px;
  font-size: 13px;
  border-top: 1px solid rgba(239,231,228,0.06);
}

.footer-info { display: flex; flex-direction: column; gap: 3px; font-size: 12px; line-height: 1.6; }
.footer-info a { color: rgba(239,231,228,0.7); }
.footer-copy { align-self: flex-end; }

.footer-brand {
  display: flex; align-items: center; gap: 10px;
  color: rgba(239,231,228,0.7);
  font-weight: 500; font-size: 13px;
  letter-spacing: 0.1em; text-transform: uppercase;
}

footer a { color: inherit; text-decoration: none; }
footer a:hover { color: var(--warm-white); }

/* RESPONSIVE */
@media (max-width: 640px) {
  .hero { padding: 120px 5vw 80px; min-height: auto; }
  .insight, .about, .starting-point { padding: 72px 5vw; }
  .how { padding: 64px 5vw; }
  .book { padding: 72px 5vw; }
  .book-placeholder { padding: 28px 20px; }
  .concepts { padding: 64px 0; }
}


/* ============ MULTI-PAGE COMPONENTS ============ */
a { color: var(--dark); }
a:hover { color: #000; }

.nav-links > a.active { color: var(--warm-white); }

/* PAGE HERO */
.page-hero {
  background: var(--dark);
  color: var(--warm-white);
  padding: 104px 5vw 74px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(239,231,228,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239,231,228,0.022) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.page-hero > * { position: relative; z-index: 1; }
.page-hero .section-label { color: rgba(239,231,228,0.34); }
.page-hero h1 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(33px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  max-width: 900px;
  margin-bottom: 22px;
}
.page-hero .answer {
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 300;
  line-height: 1.7;
  color: rgba(239,231,228,0.72);
  max-width: 660px;
}
.page-hero .hero-actions { margin-top: 36px; }

/* BREADCRUMBS (on dark hero) */
.breadcrumbs { margin-bottom: 26px; }
.breadcrumbs ol {
  list-style: none;
  display: flex; flex-wrap: wrap; align-items: center; gap: 9px;
  font-size: 12px; letter-spacing: 0.04em;
}
.breadcrumbs li { display: flex; align-items: center; gap: 9px; color: rgba(239,231,228,0.5); }
.breadcrumbs li::after { content: '/'; color: rgba(239,231,228,0.22); }
.breadcrumbs li:last-child::after { content: ''; }
.breadcrumbs a { color: rgba(239,231,228,0.5); text-decoration: none; }
.breadcrumbs a:hover { color: var(--warm-white); }
.breadcrumbs [aria-current] { color: rgba(239,231,228,0.85); }

/* CONTENT SECTIONS */
.section { padding: 84px 5vw; }
.section.warm { background: var(--warm-white); border-top: 1px solid var(--border); }
.section.light { background: var(--off-white); border-top: 1px solid var(--border); }
.measure { max-width: 760px; }
.section > .section-label { margin-bottom: 14px; }
.section h2 { margin-bottom: 18px; max-width: 720px; }
.section h3 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.2;
  margin: 38px 0 12px;
}
.section p {
  font-size: 16px; line-height: 1.8; color: #4e4a47;
  margin-bottom: 16px; font-weight: 300; max-width: 720px;
}
.section p.lead-answer { font-size: 18.5px; color: var(--dark); font-weight: 400; }
.section a { color: var(--dark); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--border); transition: text-decoration-color .15s; }
.section a:hover { text-decoration-color: var(--dark); }

ul.ticks { list-style: none; display: grid; gap: 11px; margin: 10px 0 22px; max-width: 720px; }
ul.ticks li { position: relative; padding-left: 28px; font-size: 15.5px; color: #4e4a47; line-height: 1.6; }
ul.ticks li::before {
  content: ''; position: absolute; left: 0; top: 4px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--dark) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%23efe7e4' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/10px no-repeat;
}

/* CROSS-LINK CARDS */
.crosslinks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px; margin-top: 16px; max-width: 1000px;
}
.xlink {
  display: block; background: var(--warm-white);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 24px; text-decoration: none; color: var(--dark);
  transition: border-color .18s, transform .18s;
}
.xlink:hover { border-color: var(--dark); transform: translateY(-2px); }
.xlink .k { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mid); margin-bottom: 9px; }
.xlink h4 { font-family: var(--font-head); font-weight: 400; font-size: 20px; margin-bottom: 7px; line-height: 1.2; }
.xlink p { font-size: 13.5px; color: #5a5451; line-height: 1.6; margin: 0; font-weight: 400; }
.xlink .go { font-size: 13px; font-weight: 600; color: var(--dark); margin-top: 13px; display: inline-block; }

/* COMPANY DETAILS (About) */
.facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px; background: var(--border);
  border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-top: 8px; max-width: 900px;
}
.fact { background: var(--warm-white); padding: 22px 24px; }
.fact dt { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mid); margin-bottom: 6px; }
.fact dd { font-size: 15px; color: var(--dark); font-weight: 500; }
.fact dd a { color: var(--dark); text-decoration: none; }
.fact dd a:hover { text-decoration: underline; }

/* FOOTER (multi-col) */
footer { flex-direction: column; align-items: stretch; gap: 30px; padding: 44px 5vw 30px; }
.footer-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 36px; }
.footer-cols { display: flex; gap: 56px; flex-wrap: wrap; }
.footer-col-title { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(239,231,228,0.3); margin-bottom: 12px; }
.footer-links { display: flex; flex-direction: column; gap: 7px; }
.footer-links a { color: rgba(239,231,228,0.68); font-size: 13px; }
.footer-links a:hover { color: var(--warm-white); }
.footer-bottom { border-top: 1px solid rgba(239,231,228,0.07); padding-top: 20px; font-size: 12px; color: rgba(239,231,228,0.38); }
@media (max-width: 640px) { .footer-cols { gap: 30px; } .footer-top { gap: 26px; } }

/* homepage contextual link row */
.explore-row { font-size: 15px; color: #5a5451; line-height: 1.7; max-width: 640px; margin: 4px 0 32px; font-weight: 300; }
.explore-row a { color: var(--dark); font-weight: 500; }

.page-hero .btn-primary, .page-hero .btn-secondary { white-space: nowrap; }

.btn-primary, .btn-secondary { white-space: nowrap; }
@media (max-width: 430px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { justify-content: center; }
}