/* ============================================================
   DivePropulsionVehicle.com — Main Stylesheet
   Last Updated: 2026-03-24
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garant:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Lora:ital,wght@0,400;0,500;1,400&family=Josefin+Sans:wght@300;400;600&display=swap');

/* ============================================================
   CSS Custom Properties (Design System)
   ============================================================ */
:root {
  --bg-base:        #f4f8fb;
  --bg-white:       #ffffff;
  --bg-subtle:      #eef4f9;
  --bg-teal-pale:   #e6f4f9;

  --teal:           #0b7fa5;
  --teal-dark:      #085f7d;
  --teal-deeper:    #054a62;
  --teal-light:     #3aa0c5;
  --teal-pale:      #cde9f5;

  --navy:           #0d1f3c;
  --navy-mid:       #1a3357;
  --navy-light:     #2d5080;

  --text-primary:   #1a2b42;
  --text-secondary: #456080;
  --text-muted:     #7a90a8;

  --border-light:   rgba(11,127,165,0.13);
  --border-mid:     rgba(11,127,165,0.28);

  --success:        #2d8653;
  --warning:        #c47843;
  --danger:         #c44f3a;

  --font-display: 'Cormorant Garant', Georgia, serif;
  --font-body:    'Lora', Georgia, serif;
  --font-ui:      'Josefin Sans', Arial, sans-serif;

  --shadow-sm: 0 1px 3px rgba(13,31,60,0.07);
  --shadow-md: 0 4px 16px rgba(13,31,60,0.10);
  --shadow-lg: 0 8px 32px rgba(13,31,60,0.13);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --container: 1100px;
  --container-wide: 1280px;
}

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

html { font-size: 17px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.72;
  color: var(--text-primary);
  background: var(--bg-base);
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-dark); text-decoration: underline; }

ul, ol { padding-left: 1.5rem; }
li { margin-bottom: 0.35rem; }

/* ============================================================
   Typography
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.1rem, 5vw, 3.2rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); margin-bottom: 0.85rem; margin-top: 2.5rem; }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); margin-bottom: 0.7rem; margin-top: 2rem; }
h4 { font-size: 1.15rem; margin-bottom: 0.5rem; margin-top: 1.5rem; }

p { margin-bottom: 1.2rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 600; }

/* Drop cap on first paragraph of articles */
.article-body > p:first-of-type::first-letter,
.drop-cap::first-letter {
  float: left;
  font-family: var(--font-display);
  font-size: 3.6rem;
  font-weight: 700;
  line-height: 0.78;
  color: var(--teal);
  margin-right: 0.1em;
  margin-top: 0.08em;
}

/* ============================================================
   Compliance Ribbon
   ============================================================ */
.compliance-ribbon {
  background: var(--navy);
  color: rgba(255,255,255,0.72);
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.045em;
  text-align: center;
  padding: 0.45rem 1rem;
  text-transform: uppercase;
}

.compliance-ribbon strong { color: rgba(255,255,255,0.92); }

/* ============================================================
   Navigation
   ============================================================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 4px rgba(13,31,60,0.06);
}

.nav-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-brand:hover { color: var(--navy); text-decoration: none; }
.nav-brand span { color: var(--teal); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
  text-decoration: none;
}

.nav-links a:hover { color: var(--teal); background: var(--bg-teal-pale); }

.nav-links .nav-cta {
  background: var(--teal);
  color: #fff;
  border-radius: 3px;
  padding: 0.45rem 1rem;
}

.nav-links .nav-cta:hover { background: var(--teal-dark); color: #fff; }

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all 0.25s;
}

/* ============================================================
   Layout Containers
   ============================================================ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Section spacing */
.section { padding: 4rem 0; }
.section-sm { padding: 2.5rem 0; }
.section-lg { padding: 5.5rem 0; }

.bg-white  { background: var(--bg-white); }
.bg-base   { background: var(--bg-base); }
.bg-subtle { background: var(--bg-subtle); }
.bg-teal-pale { background: var(--bg-teal-pale); }

/* ============================================================
   Safety Notice
   ============================================================ */
.safety-notice {
  background: #fff8f0;
  border-left: 4px solid var(--warning);
  padding: 1rem 1.25rem;
  font-size: 0.88rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  line-height: 1.6;
}

.safety-notice strong { color: var(--warning); }

/* ============================================================
   Direct Answer Block (DAB)
   ============================================================ */
.dab {
  background: var(--bg-teal-pale);
  border-left: 4px solid var(--teal);
  border-radius: 0 6px 6px 0;
  padding: 1.2rem 1.5rem;
  margin: 1rem 0 1.75rem;
}

.dab-label {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.5rem;
}

.dab p { margin-bottom: 0; font-size: 0.95rem; line-height: 1.65; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--teal);
  color: #fff;
  border-color: var(--teal);
}
.btn-primary:hover {
  background: var(--teal-dark);
  border-color: var(--teal-dark);
  color: #fff;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--teal);
  border-color: var(--teal);
}
.btn-outline:hover {
  background: var(--teal);
  color: #fff;
  text-decoration: none;
}

.btn-white {
  background: #fff;
  color: var(--teal-deeper);
  border-color: #fff;
}
.btn-white:hover {
  background: var(--teal-pale);
  color: var(--teal-deeper);
  text-decoration: none;
}

.btn-sm {
  font-size: 0.7rem;
  padding: 0.5rem 1rem;
}

/* ============================================================
   Affiliate Disclaimer
   ============================================================ */
.affiliate-disclaimer {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  margin-top: 0.4rem;
  display: block;
}

/* ============================================================
   Affiliate Disclosure Ribbon (page-level)
   ============================================================ */
.affiliate-ribbon {
  background: var(--bg-teal-pale);
  border-bottom: 1px solid var(--border-light);
  padding: 0.65rem 1.5rem;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  text-align: center;
}

/* ============================================================
   Hero Section
   ============================================================ */
.hero {
  background: var(--bg-white);
  padding: 5rem 0 4.5rem;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 3.5rem;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.75rem;
  display: block;
}

.hero h1 { margin-bottom: 1.1rem; }
.hero h1 em { font-style: italic; color: var(--teal); }

.hero-subhead {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 560px;
}

.hero-ctas {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* Stats Card */
.stats-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  border-radius: 10px;
  overflow: hidden;
}

.stats-card-header {
  background: var(--teal);
  height: 5px;
}

.stats-card-body { padding: 1.5rem 1.75rem; }

.stats-card-title {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.stats-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border-light);
}

.stats-row:last-child { border-bottom: none; }

.stats-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.stats-value {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   Trust Bar
   ============================================================ */
.trust-bar {
  background: var(--bg-subtle);
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border-light);
}

.trust-bar-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  justify-content: center;
  align-items: center;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.trust-item {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.trust-item .check { color: var(--teal); font-size: 0.85rem; }

/* ============================================================
   Use Case Cards
   ============================================================ */
.use-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.use-case-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.use-case-card:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: inherit;
}

.use-case-icon { font-size: 1.8rem; margin-bottom: 0.85rem; }

.use-case-card h3 {
  font-size: 1.25rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.use-case-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.use-case-link {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--teal);
}

/* ============================================================
   Featured Guide Teaser
   ============================================================ */
.featured-guide {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
}

.featured-guide-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.6rem;
  display: block;
}

.featured-guide ul {
  margin: 1rem 0 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.sidebar-box {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  margin-bottom: 1.25rem;
}

.sidebar-box h4 {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0;
  margin-bottom: 0.85rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-box ul li { margin-bottom: 0.3rem; }

.sidebar-box ul a {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

.sidebar-box ul a:hover { color: var(--teal); }

.sidebar-box.teal-pale-bg { background: var(--bg-teal-pale); border-color: var(--teal-pale); }

/* ============================================================
   DPV Range Calculator
   ============================================================ */
.calculator-wrap {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-width: 720px;
  margin: 0 auto;
  overflow: hidden;
}

.calc-header {
  background: var(--teal-deeper);
  padding: 1.5rem 2rem;
  color: #fff;
}

.calc-header h3 {
  font-family: var(--font-display);
  color: #fff;
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
}

.calc-header p {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  opacity: 0.75;
  margin: 0;
}

.calc-body { padding: 1.75rem 2rem; }

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.35rem 2rem;
  margin-bottom: 1.75rem;
}

.calc-field label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 0.4rem;
}

.calc-field label span {
  font-weight: 400;
  color: var(--teal);
  letter-spacing: 0;
  font-size: 0.78rem;
  text-transform: none;
}

.calc-field input[type="range"] {
  width: 100%;
  accent-color: var(--teal);
  cursor: pointer;
  margin-top: 0.25rem;
}

.calc-field select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-primary);
  background: var(--bg-white);
  cursor: pointer;
  margin-top: 0.25rem;
}

.calc-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.result-block {
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  text-align: center;
  border: 1px solid var(--border-light);
}

.result-label {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.5rem;
}

.result-value {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--teal);
  line-height: 1;
  transition: color 0.3s;
}

.result-unit {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-top: 0.2rem;
  display: block;
}

.calc-disclaimer {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-align: center;
  margin: 0;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-light);
}

/* ============================================================
   Product Cards
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.product-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.65rem;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.product-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.product-brand {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.product-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0.2rem 0 0.75rem;
}

.product-specs {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  flex: 1;
}

.product-specs li {
  display: flex;
  justify-content: space-between;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.85rem;
  margin-bottom: 0;
}

.product-specs li:last-child { border-bottom: none; }

.spec-label {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.spec-value { color: var(--text-primary); font-weight: 500; }

.product-ctas {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: auto;
}

.no-affiliate-note {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.35rem;
}

/* Tier Badges */
.badge {
  font-family: var(--font-ui);
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 50px;
  display: inline-block;
  white-space: nowrap;
}

.badge-rec  { background: #d4f0e2; color: #1a6640; }
.badge-mid  { background: #deedf8; color: #1a4a6e; }
.badge-tech { background: #2d3a52; color: #b8cfe8; }
.badge-pro  { background: var(--navy); color: #b8cfe8; }

/* ============================================================
   CTA Band (gradient)
   ============================================================ */
.cta-band {
  background: linear-gradient(135deg, var(--teal-deeper), var(--teal));
  padding: 4.5rem 1.5rem;
  text-align: center;
}

.cta-band h2 {
  font-family: var(--font-display);
  color: #fff;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  margin-bottom: 0.75rem;
}

.cta-band p {
  color: rgba(255,255,255,0.82);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto 1.75rem;
}

.cta-band .cta-disclaimer {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.05em;
  margin-top: 1rem;
}

/* ============================================================
   Section Eyebrows
   ============================================================ */
.section-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal);
  display: block;
  margin-bottom: 0.6rem;
}

.section-header { text-align: center; margin-bottom: 2.75rem; }
.section-header h2 { margin-bottom: 0.6rem; }
.section-header p  { color: var(--text-secondary); max-width: 580px; margin: 0 auto; }

/* ============================================================
   Breadcrumb
   ============================================================ */
.breadcrumb {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: 0.85rem 0 0;
}

.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--teal); }
.breadcrumb span { margin: 0 0.4rem; }

/* ============================================================
   Two-Column Article Layout
   ============================================================ */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 270px;
  gap: 3rem;
  align-items: start;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.article-body { min-width: 0; }

.article-sidebar {
  position: sticky;
  top: 84px;
}

.page-header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 2.5rem;
}

.page-header .eyebrow {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal);
  display: block;
  margin-bottom: 0.5rem;
}

.meta-row {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-top: 0.75rem;
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.meta-row span { display: flex; align-items: center; gap: 0.3rem; }

/* ============================================================
   Inline CTA Box
   ============================================================ */
.inline-cta {
  background: var(--bg-teal-pale);
  border: 1px solid var(--teal-pale);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  text-align: center;
  margin: 2.5rem 0;
}

.inline-cta h3 {
  font-size: 1.3rem;
  margin-top: 0;
  margin-bottom: 0.65rem;
  color: var(--teal-deeper);
}

.inline-cta p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 1.1rem;
}

/* ============================================================
   FAQ Accordion
   ============================================================ */
.faq-list { margin: 0; }

.faq-item {
  border-bottom: 1px solid var(--border-light);
}

.faq-item:first-child { border-top: 1px solid var(--border-light); }

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.1rem 0;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.faq-question:hover { color: var(--teal); }

.faq-icon {
  font-size: 1.2rem;
  color: var(--teal);
  flex-shrink: 0;
  transition: transform 0.2s;
  font-style: normal;
  line-height: 1;
}

.faq-item.open .faq-icon { transform: rotate(45deg); }

.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-answer-inner { padding-bottom: 1.1rem; }

.faq-item.open .faq-answer { max-height: 600px; padding: 0; }

/* ============================================================
   Comparison Table
   ============================================================ */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  min-width: 700px;
}

.comparison-table th {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.75rem 1rem;
  background: var(--bg-subtle);
  border-bottom: 2px solid var(--border-mid);
  text-align: left;
  white-space: nowrap;
}

.comparison-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:hover td { background: var(--bg-teal-pale); }

/* ============================================================
   Quick-Access Nav (anchor jumps)
   ============================================================ */
.quick-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.quick-nav a {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid var(--teal);
  padding: 0.4rem 0.85rem;
  border-radius: 50px;
  text-decoration: none;
  transition: all 0.2s;
}

.quick-nav a:hover {
  background: var(--teal);
  color: #fff;
  text-decoration: none;
}

/* ============================================================
   Certification Steps (visual flow)
   ============================================================ */
.cert-steps { list-style: none; padding: 0; margin: 2rem 0; }

.cert-step {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  background: var(--bg-white);
}

.cert-step.step-advanced {
  background: var(--bg-teal-pale);
  border-color: var(--teal-pale);
}

.cert-step.step-final {
  background: linear-gradient(135deg, var(--teal-deeper), var(--teal));
  border-color: var(--teal-dark);
  color: #fff;
}

.cert-step.step-final .step-label,
.cert-step.step-final .step-title,
.cert-step.step-final .step-body { color: #fff; }
.cert-step.step-final .step-circle { background: rgba(255,255,255,0.2); color: #fff; border-color: rgba(255,255,255,0.4); }

.step-circle {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  background: var(--bg-teal-pale);
  border: 2px solid var(--teal-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--teal);
}

.step-content { flex: 1; }

.step-label {
  font-family: var(--font-ui);
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  display: block;
  margin-bottom: 0.2rem;
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.step-body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

/* ============================================================
   Agency / Resource Cards (2x2 grid)
   ============================================================ */
.agency-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.agency-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.35rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  display: block;
}

.agency-card:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
}

.agency-card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.agency-card-desc {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 0;
}

.agency-card-link {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--teal);
  margin-top: 0.5rem;
  display: block;
}

/* ============================================================
   Tier Section Headers
   ============================================================ */
.tier-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

/* ============================================================
   Fade-in animation (IntersectionObserver)
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding: 3.5rem 0 2rem;
}

.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.35rem;
}

.footer-brand span { color: var(--teal-light); }

.footer-tagline {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.footer-disclosure-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.disclosure-section h4 {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal-light);
  margin-top: 0;
  margin-bottom: 0.6rem;
}

.disclosure-section p {
  font-size: 0.8rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.58);
  margin-bottom: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-bottom: 1.5rem;
}

.footer-nav a {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-nav a:hover { color: var(--teal-light); }

.footer-bottom {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.32);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ============================================================
   Responsive — 960px (collapse columns)
   ============================================================ */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-stats-col { display: none; }
  .use-case-grid { grid-template-columns: 1fr; }
  .featured-guide { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .footer-disclosure-grid { grid-template-columns: 1fr; }
  .agency-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Responsive — 640px (stack buttons)
   ============================================================ */
@media (max-width: 640px) {
  html { font-size: 15px; }
  .nav-links { display: none; flex-direction: column; gap: 0; position: absolute; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border-light); padding: 1rem; box-shadow: var(--shadow-md); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .product-grid { grid-template-columns: 1fr; }
  .calc-grid { grid-template-columns: 1fr; }
  .calc-results { grid-template-columns: 1fr; }
  .footer-disclosure-grid { grid-template-columns: 1fr; }
  .quick-nav { flex-direction: column; align-items: flex-start; }
  .cert-step { flex-direction: column; }
}