/* ============================================================
   Kalvin Brite — Product Leadership Coach & Advisor
   Design System: main.css
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=DM+Serif+Display:ital@0;1&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #ffffff;
  --color-bg-soft: #f8f7f4;      /* warm cream */
  --color-bg-dark: #0d3331;      /* deep teal-black */
  --color-text: #1a1a1a;
  --color-text-muted: #5a6475;
  --color-text-light: #94a3b8;
  --color-border: #e4e1db;       /* warm border */
  --color-accent: #0f766e;       /* deep teal */
  --color-accent-hover: #0d9488;
  --color-accent-light: #f0fdfa;
  --color-accent-soft: #99f6e4;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'DM Serif Display', Georgia, serif;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1100px;
  --container-narrow: 720px;
  --border-radius: 8px;
  --border-radius-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }
ul, ol { padding-left: var(--space-6); }

/* --- Layout Utilities --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) 0;
}

.section--soft {
  background: var(--color-bg-soft);
}

.section--dark {
  background: var(--color-bg-dark);
  color: #f1f5f9;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: #f1f5f9;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

.display { font-family: var(--font-serif); }
.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-3);
}

.lead {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  line-height: 1.65;
  color: var(--color-text-muted);
}

p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

/* --- Navigation --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav__logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav__logo span { color: var(--color-accent); }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  padding: 0;
}

.nav__links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.nav__links a:hover,
.nav__links a.active { color: var(--color-text); }

.nav__cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--space-2);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.2s;
}

.nav__mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6);
}

.nav__mobile.open { display: flex; }
.nav__mobile a {
  display: block;
  padding: var(--space-3) 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
}
.nav__mobile a:last-of-type { border-bottom: none; }
.nav__mobile .btn { margin-top: var(--space-4); text-align: center; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.6875rem 1.375rem;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(37,99,235,0.25);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent);
  color: #ffffff;
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  background: var(--color-bg-soft);
  color: var(--color-text);
}

.btn--lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

.btn--white {
  background: #ffffff;
  color: var(--color-accent);
  border-color: #ffffff;
}

.btn--white:hover {
  background: #f1f5f9;
  color: var(--color-accent-hover);
}

/* --- Hero --- */
.hero {
  padding: var(--space-24) 0 var(--space-20);
  background: linear-gradient(160deg, #f8faff 0%, #ffffff 60%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -120px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  margin-bottom: var(--space-5);
}

.hero h1 {
  margin-bottom: var(--space-5);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero .lead {
  margin-bottom: var(--space-8);
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero__photo {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__photo-wrap {
  width: 400px;
  height: 480px;
  border-radius: var(--border-radius-lg);
  background: linear-gradient(135deg, var(--color-accent-soft) 0%, var(--color-accent-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
}

.hero__photo-placeholder {
  font-size: 5rem;
  opacity: 0.4;
}

/* --- Credibility Bar --- */
.credibility {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.credibility__label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: var(--space-8);
  white-space: nowrap;
}

.credibility__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.credibility__logos {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.credibility__logo {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: -0.01em;
  opacity: 0.65;
  transition: opacity 0.2s;
}

.credibility__logo:hover { opacity: 1; }

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}

.section-header h2 { margin-bottom: var(--space-4); }
.section-header p { font-size: 1.0625rem; color: var(--color-text-muted); }

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.card-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.card-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  transition: box-shadow 0.2s, transform 0.2s;
}

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

.card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-light);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  font-size: 1.375rem;
}

.card h3 { margin-bottom: var(--space-3); }
.card p { font-size: 0.9375rem; color: var(--color-text-muted); margin: 0; }

/* --- Two Column Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.two-col--reverse > *:first-child { order: 2; }
.two-col--reverse > *:last-child { order: 1; }

/* --- Problem Statement --- */
.problem {
  padding: var(--space-20) 0;
}

.problem__quote {
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-family: var(--font-serif);
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  font-weight: 400;
}

.problem__quote strong { color: var(--color-accent); font-weight: 400; }

/* --- Who It's For --- */
.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.audience-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-10);
}

.audience-card__label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.audience-card h3 { margin-bottom: var(--space-4); }
.audience-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.audience-card ul li {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.audience-card ul li:last-child { border-bottom: none; }

.audience-card ul li::before {
  content: '→';
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- Testimonials --- */
.testimonials {
  padding: var(--space-24) 0;
  background: var(--color-bg-soft);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.testimonial {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
}

.testimonial__quote {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  font-style: italic;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.testimonial__name {
  font-weight: 600;
  font-size: 0.9375rem;
}

.testimonial__title {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- CTA Section --- */
.cta-section {
  background: var(--color-bg-dark);
  padding: var(--space-24) 0;
  text-align: center;
}

.cta-section h2 { color: #f1f5f9; margin-bottom: var(--space-4); }
.cta-section p { color: #94a3b8; font-size: 1.0625rem; margin-bottom: var(--space-8); max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-section .btn { margin: 0 var(--space-2); }

/* --- About Inline Preview --- */
.about-preview {
  padding: var(--space-20) 0;
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  padding: var(--space-20) 0 var(--space-16);
  background: linear-gradient(160deg, #f8faff 0%, #ffffff 80%);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 { margin-bottom: var(--space-4); }
.page-hero .lead { max-width: 600px; }

/* --- FAQ --- */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

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

.faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6) 0;
  font-weight: 600;
  font-size: 1.0625rem;
  cursor: pointer;
  gap: var(--space-4);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.375rem;
  color: var(--color-accent);
  flex-shrink: 0;
  line-height: 1;
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item__answer {
  padding-bottom: var(--space-6);
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* --- Blog --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.blog-card {
  display: flex;
  flex-direction: column;
}

.blog-card__meta {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-2);
}

.blog-card__tag {
  display: inline-block;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 100px;
  margin-right: var(--space-2);
}

.blog-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-3);
  line-height: 1.35;
}

.blog-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.blog-card h3 a:hover { color: var(--color-accent); }

.blog-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  flex: 1;
}

.blog-card__read-more {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* --- Blog Post (article) --- */
.article {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
}

.article__header { margin-bottom: var(--space-10); }
.article__header h1 { margin-bottom: var(--space-4); }
.article__meta {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.article__body { line-height: 1.8; }
.article__body h2 { margin: var(--space-10) 0 var(--space-4); }
.article__body h3 { margin: var(--space-8) 0 var(--space-3); }
.article__body p { margin-bottom: var(--space-5); color: #334155; }
.article__body ul, .article__body ol { margin-bottom: var(--space-5); color: #334155; }
.article__body li { margin-bottom: var(--space-2); }
.article__body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 1.0625rem;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info h3 { margin-bottom: var(--space-4); }
.contact-info p { color: var(--color-text-muted); }

.contact-detail {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.contact-detail__icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent-light);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.125rem;
}

.contact-detail__text { font-size: 0.9375rem; color: var(--color-text-muted); }
.contact-detail__text strong { display: block; color: var(--color-text); font-weight: 600; }

.cal-embed {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-10);
  text-align: center;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.cal-embed p { color: var(--color-text-muted); margin: 0; }

/* --- Process Steps --- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.step {
  text-align: center;
  padding: var(--space-6);
  position: relative;
}

.step::after {
  content: '';
  position: absolute;
  top: 28px;
  right: -50%;
  width: 100%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}

.step:last-child::after { display: none; }

.step__number {
  width: 56px;
  height: 56px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  margin: 0 auto var(--space-4);
  position: relative;
  z-index: 1;
}

.step h4 { margin-bottom: var(--space-2); font-size: 1rem; }
.step p { font-size: 0.875rem; color: var(--color-text-muted); margin: 0; }

/* --- Stats / Numbers --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  text-align: center;
}

.stat__number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
  letter-spacing: -0.03em;
}

.stat__label {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: #94a3b8;
  padding: var(--space-16) 0 var(--space-8);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
}

.footer__brand p {
  font-size: 0.9375rem;
  margin-top: var(--space-3);
  max-width: 280px;
  line-height: 1.6;
}

.footer__logo {
  font-size: 1rem;
  font-weight: 700;
  color: #f1f5f9;
  letter-spacing: -0.02em;
}

.footer__logo span { color: var(--color-accent); }

.footer__col h4 {
  color: #f1f5f9;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.footer__col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__col a {
  color: #94a3b8;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color 0.15s;
}

.footer__col a:hover { color: #f1f5f9; }

.footer__bottom {
  border-top: 1px solid #1e293b;
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

.footer__social {
  display: flex;
  gap: var(--space-4);
}

.footer__social a {
  color: #64748b;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: color 0.15s;
}

.footer__social a:hover { color: #f1f5f9; }

/* --- Divider --- */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-16) 0;
}

/* --- Tag / Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 100px;
}

/* --- Utilities --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__photo { display: none; }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .two-col--reverse > *:first-child { order: 0; }
  .two-col--reverse > *:last-child { order: 0; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .step::after { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .section { padding: var(--space-16) 0; }
  .hero { padding: var(--space-16) 0; }
  .nav__links { display: none; }
  .nav__cta .btn { display: none; }
  .nav__toggle { display: flex; }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid--2 { grid-template-columns: 1fr; }
  .card-grid--4 { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .process-steps { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .cta-section .btn { display: block; margin: var(--space-2) auto; max-width: 280px; justify-content: center; }
}