:root {
  --color-primary: #1a2744;
  --color-primary-light: #243460;
  --color-secondary: #2d5be3;
  --color-secondary-light: #4a74f0;
  --color-accent: #e8a020;
  --color-accent-light: #f0b840;
  --color-bg: #f7f8fc;
  --color-bg-alt: #eef1f8;
  --color-surface: #ffffff;
  --color-text: #1e2535;
  --color-text-secondary: #4a5568;
  --color-text-muted: #718096;
  --color-border: #dde3f0;
  --color-border-light: #edf0f7;
  --color-success: #2a9d5c;
  --color-warning: #e8a020;
  --color-error: #d94040;

  --shadow-xs: 0 1px 3px rgba(26,39,68,0.06), 0 1px 2px rgba(26,39,68,0.04);
  --shadow-sm: 0 2px 8px rgba(26,39,68,0.08), 0 1px 3px rgba(26,39,68,0.05);
  --shadow-md: 0 4px 16px rgba(26,39,68,0.10), 0 2px 6px rgba(26,39,68,0.06);
  --shadow-lg: 0 8px 32px rgba(26,39,68,0.12), 0 4px 12px rgba(26,39,68,0.08);
  --shadow-xl: 0 16px 48px rgba(26,39,68,0.16), 0 6px 18px rgba(26,39,68,0.10);
  --shadow-hover: 0 20px 56px rgba(26,39,68,0.18), 0 8px 24px rgba(26,39,68,0.12);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --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;

  --font-family: 'Sora', sans-serif;
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  --nav-height: 72px;
}


*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page { display: flex; flex-direction: column; min-height: 100vh; }
.page__main { flex: 1; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition-base); }


.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}


.section { padding: var(--space-20) 0; }
.section--alt { background-color: var(--color-bg-alt); }
.section--dark { background-color: var(--color-primary); color: #f0f4ff; }
.section--overlap-top {
  position: relative;
  z-index: 2;
  margin-top: -80px;
  padding-top: calc(var(--space-20) + 80px);
}


.section__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-3);
}
.section__eyebrow--light { color: var(--color-accent); }

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: var(--space-4);
}
.section--dark .section__title { color: #f0f4ff; }

.section__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* =============================================
   NAVIGATION
   ============================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  height: var(--nav-height);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  gap: var(--space-6);
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}
.nav__logo-img { width: 36px; height: 36px; }
.nav__logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}
.nav__menu { flex: 1; display: flex; justify-content: center; }
.nav__list { display: flex; align-items: center; gap: var(--space-1); list-style: none; }
.nav__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background-color var(--transition-base);
  position: relative;
  white-space: nowrap;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: var(--space-3);
  right: var(--space-3);
  height: 2px;
  background: var(--color-secondary);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: center;
}
.nav__link:hover { color: var(--color-primary); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link--active { color: var(--color-primary); font-weight: 600; }
.nav__link--active::after { transform: scaleX(1); }
.nav__cta { flex-shrink: 0; }
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
  flex-shrink: 0;
}
.nav__hamburger:hover { background-color: var(--color-bg-alt); }
.nav__hamburger-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav__hamburger.is-open .nav__hamburger-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.is-open .nav__hamburger-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.is-open .nav__hamburger-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile-panel {
  max-height: 0;
  overflow: hidden;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  transition: max-height 0.35s ease;
}
.nav__mobile-panel.is-open { max-height: 520px; }
.nav__mobile-list {
  list-style: none;
  padding: var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.nav__mobile-link {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background-color var(--transition-base);
  min-height: 44px;
}
.nav__mobile-link:hover,
.nav__mobile-link--active {
  color: var(--color-primary);
  background-color: var(--color-bg-alt);
}
.nav__mobile-cta {
  margin: var(--space-4) var(--space-6) var(--space-6);
  display: flex;
  justify-content: center;
  width: calc(100% - var(--space-12));
}


.nav__border {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 1px;
  background: var(--color-border);
  transform-origin: center;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav--scrolled .nav__border { transform: translateX(-50%) scaleX(1); }

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.375rem;
  font-family: var(--font-family);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base),
              border-color var(--transition-base), transform var(--transition-fast),
              box-shadow var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  min-height: 44px;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background-color: var(--color-secondary);
  color: #ffffff;
  border-color: var(--color-secondary);
  box-shadow: 0 2px 8px rgba(45,91,227,0.25);
}
.btn--primary:hover {
  background-color: var(--color-secondary-light);
  border-color: var(--color-secondary-light);
  box-shadow: 0 6px 20px rgba(45,91,227,0.35);
  color: #ffffff;
}
.btn--outline {
  background-color: transparent;
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}
.btn--outline:hover {
  background-color: var(--color-secondary);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(45,91,227,0.25);
}
.btn--ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(232,160,32,0.3);
}
.btn--accent:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-light);
  box-shadow: 0 6px 20px rgba(232,160,32,0.4);
  color: var(--color-primary);
}
.btn--lg { padding: 0.875rem 1.875rem; font-size: 0.95rem; min-height: 52px; }
.btn--sm { padding: 0.4rem 0.875rem; font-size: 0.8rem; min-height: 36px; }
.btn--block { width: 100%; justify-content: center; }

/* =============================================
   HERO
   ============================================= */
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

.hero {
  background-color: var(--color-primary);
  position: relative;
  overflow: hidden;
}
.hero__top { padding: var(--space-16) 0 var(--space-10); }
.hero__top-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  text-align: center;
  animation: heroFadeUp 0.7s ease both;
}
.hero__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  animation: heroFadeUp 0.7s 0.1s ease both;
}
.hero__title {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 800;
  color: #f0f4ff;
  line-height: 1.1;
  letter-spacing: -0.02em;
  animation: heroFadeUp 0.7s 0.15s ease both;
}
.hero__image-strip {
  position: relative;
  height: 280px;
  overflow: hidden;
}
.hero__strip-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero__strip-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(26,39,68,0.75) 0%,
    rgba(26,39,68,0.3) 35%,
    rgba(26,39,68,0.3) 65%,
    rgba(26,39,68,0.75) 100%
  );
}
.hero__strip-badge {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: rgba(26,39,68,0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
}
.hero__badge-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(240,244,255,0.85);
}
.hero__badge-sep { color: var(--color-accent); font-weight: 700; }

.hero__bottom { padding: var(--space-10) 0 var(--space-16); }
.hero__bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  text-align: center;
  animation: heroFadeUp 0.7s 0.3s ease both;
}
.hero__description {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(240,244,255,0.78);
  max-width: 680px;
  margin: 0 auto var(--space-8);
  line-height: 1.75;
}
.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.hero__actions .btn--ghost {
  color: rgba(240,244,255,0.85);
  border-color: rgba(240,244,255,0.3);
}
.hero__actions .btn--ghost:hover {
  background-color: rgba(240,244,255,0.1);
  color: #f0f4ff;
  border-color: rgba(240,244,255,0.6);
}
.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: rgba(240,244,255,0.4);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: heroFadeUp 1s 0.8s ease both;
  pointer-events: none;
}
.hero__scroll-icon { animation: bounce 2s infinite; }

/* =============================================
   TOPIC CARDS
   ============================================= */
.topics__header { text-align: center; margin-bottom: var(--space-12); }
.topics__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}

.topic-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}
.topic-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(45,91,227,0.3);
}


.topic-card--animated-border::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-lg) + 2px);
  background: conic-gradient(
    var(--color-secondary) 0deg,
    var(--color-accent) 90deg,
    var(--color-secondary-light) 180deg,
    var(--color-secondary) 270deg,
    transparent 270deg
  );
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-slow);
  animation: none;
}
.topic-card--animated-border:hover::after {
  opacity: 1;
  animation: borderSpin 3s linear infinite;
}
@keyframes borderSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.topic-card__icon-wrap {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, rgba(45,91,227,0.1) 0%, rgba(45,91,227,0.04) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  transition: background var(--transition-base), transform var(--transition-base);
}
.topic-card:hover .topic-card__icon-wrap {
  background: linear-gradient(135deg, rgba(45,91,227,0.18) 0%, rgba(45,91,227,0.08) 100%);
  transform: scale(1.08);
}
.topic-card__icon { font-size: 1.375rem; color: var(--color-secondary); }
.topic-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}
.topic-card__body {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}
.topic-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-secondary);
  transition: gap var(--transition-base), color var(--transition-base);
}
.topic-card__link:hover { gap: var(--space-3); color: var(--color-secondary-light); }

/* =============================================
   WHY MATTERS
   ============================================= */
.why-matters__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.why-matters__lead {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.65;
  margin-bottom: var(--space-5);
}
.why-matters__body {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-5);
}
.why-matters__body:last-of-type { margin-bottom: var(--space-8); }

.why-matters__card-stack {
  position: relative;
  height: 360px;
}
.why-matters__card {
  position: absolute;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.why-matters__card--back {
  width: 85%;
  height: 85%;
  bottom: 0;
  right: 0;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  display: flex;
  align-items: flex-start;
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
}
.why-matters__card-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
}
.why-matters__card--front {
  width: 90%;
  height: 88%;
  top: 0;
  left: 0;
  background: var(--color-surface);
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}
.why-matters__card--front:hover {
  transform: translateY(-8px) rotate(-1deg);
  box-shadow: var(--shadow-hover);
}
.why-matters__card-img {
  width: 100%;
  height: 75%;
  object-fit: cover;
}
.why-matters__card-caption {
  padding: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}
.why-matters__card-caption i { color: var(--color-secondary); }

/* =============================================
   ARTICLE CARDS
   ============================================= */
.articles__header { text-align: center; margin-bottom: var(--space-12); }
.articles__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-border);
}
.article-card--featured { border-left: 3px solid var(--color-secondary); }

.article-card__image-wrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.article-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.article-card:hover .article-card__image { transform: scale(1.04); }
.article-card__tag {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-primary);
  color: rgba(240,244,255,0.9);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}
.article-card__body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
  margin-bottom: var(--space-3);
}
.article-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-4);
}
.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.article-card__complexity {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
}
.article-card__complexity--beginner {
  background: rgba(42,157,92,0.12);
  color: var(--color-success);
}
.article-card__complexity--intermediate {
  background: rgba(232,160,32,0.12);
  color: #c17a10;
}
.article-card__complexity--advanced {
  background: rgba(45,91,227,0.12);
  color: var(--color-secondary);
}
.article-card__read-time {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.article-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-secondary);
  margin-top: auto;
  transition: gap var(--transition-base);
}
.article-card__cta:hover { gap: var(--space-3); }
.articles__footer { text-align: center; margin-top: var(--space-10); }

/* =============================================
   REASON CARDS
   ============================================= */
.reasons__header { text-align: center; margin-bottom: var(--space-12); }
.reasons__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}
.reason-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  border-bottom: 3px solid transparent;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  text-align: center;
}
.reason-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-bottom-color: var(--color-secondary);
}
.reason-card__icon-wrap {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(45,91,227,0.08) 0%, rgba(45,91,227,0.03) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  transition: background var(--transition-base), transform var(--transition-base);
}
.reason-card:hover .reason-card__icon-wrap {
  background: linear-gradient(135deg, rgba(45,91,227,0.15) 0%, rgba(45,91,227,0.07) 100%);
  transform: scale(1.08);
}
.reason-card__icon { font-size: 1.5rem; color: var(--color-secondary); }
.reason-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.reason-card__body {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* =============================================
   OVERLAP BRIDGE
   ============================================= */
.section--overlap-bridge { position: relative; }
.overlap-bridge {
  position: relative;
  z-index: 3;
  margin-top: -60px;
  margin-bottom: -60px;
  padding: 0 var(--space-6);
}
.overlap-bridge__card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-slow);
  max-width: 1200px;
  margin: 0 auto;
}
.overlap-bridge__card:hover { box-shadow: var(--shadow-hover); }
.overlap-bridge__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 320px;
}
.overlap-bridge__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 280px;
}
.overlap-bridge__text {
  padding: var(--space-12) var(--space-10);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-5);
}
.overlap-bridge__title {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
}
.overlap-bridge__body {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* =============================================
   FAQ
   ============================================= */
.faq__header { text-align: center; margin-bottom: var(--space-12); }
.faq__list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.faq__item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}
.faq__item:hover { box-shadow: var(--shadow-md); border-color: var(--color-border); }
.faq__item.is-open { border-color: var(--color-secondary); box-shadow: var(--shadow-md); }
.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-family);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
  min-height: 44px;
  transition: color var(--transition-base);
}
.faq__question:hover { color: var(--color-secondary); }
.faq__item.is-open .faq__question { color: var(--color-secondary); }
.faq__icon {
  flex-shrink: 0;
  font-size: 0.875rem;
  color: var(--color-secondary);
  transition: transform var(--transition-base);
}
.faq__item.is-open .faq__icon { transform: rotate(45deg); }
.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq__item.is-open .faq__answer { max-height: 500px; }
.faq__answer-inner {
  padding: 0 var(--space-6) var(--space-6);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}
.faq__link {
  color: var(--color-secondary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-base);
}
.faq__link:hover { color: var(--color-secondary-light); }

/* =============================================
   CTA SECTION
   ============================================= */
.cta-section__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-12);
  align-items: center;
}
.cta-section__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #f0f4ff;
  line-height: 1.25;
  margin-bottom: var(--space-4);
}
.cta-section__body {
  font-size: 0.95rem;
  color: rgba(240,244,255,0.72);
  line-height: 1.75;
  margin-bottom: var(--space-6);
}
.cta-section__form-row {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}
.cta-section__input {
  flex: 1;
  min-width: 200px;
  padding: 0.625rem var(--space-4);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.9rem;
  color: #f0f4ff;
  outline: none;
  transition: border-color var(--transition-base), background-color var(--transition-base);
  min-height: 44px;
}
.cta-section__input::placeholder { color: rgba(240,244,255,0.4); }
.cta-section__input:focus {
  border-color: var(--color-accent);
  background: rgba(255,255,255,0.12);
}
.cta-section__disclaimer {
  font-size: 0.75rem;
  color: rgba(240,244,255,0.45);
}
.cta-section__img {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 2px solid rgba(255,255,255,0.1);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background-color: var(--color-primary);
  color: rgba(240,244,255,0.8);
  margin-top: auto;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  padding: var(--space-16) var(--space-6) var(--space-12);
  max-width: 1200px;
  margin: 0 auto;
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.footer__logo { width: 32px; height: 32px; opacity: 0.9; }
.footer__brand-name { font-size: 1rem; font-weight: 700; color: #f0f4ff; }
.footer__tagline {
  font-size: 0.85rem;
  color: rgba(240,244,255,0.55);
  line-height: 1.65;
  margin-bottom: var(--space-6);
  max-width: 280px;
}
.footer__contact { display: flex; flex-direction: column; gap: var(--space-2); }
.footer__contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.82rem;
  color: rgba(240,244,255,0.6);
}
.footer__contact-item i { color: var(--color-accent); width: 14px; flex-shrink: 0; }
.footer__contact-item a {
  color: rgba(240,244,255,0.6);
  transition: color var(--transition-base);
}
.footer__contact-item a:hover { color: var(--color-accent); }

.footer__right {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}
.footer__nav-heading {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(240,244,255,0.38);
  margin-bottom: var(--space-4);
}
.footer__nav-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.footer__nav-link {
  font-size: 0.85rem;
  color: rgba(240,244,255,0.6);
  transition: color var(--transition-base), padding-left var(--transition-base);
  display: block;
  padding: var(--space-1) 0;
}
.footer__nav-link:hover { color: #f0f4ff; padding-left: var(--space-2); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--space-5) var(--space-6);
}
.footer__bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer__copy { font-size: 0.78rem; color: rgba(240,244,255,0.35); }
.footer__address { font-size: 0.78rem; color: rgba(240,244,255,0.35); }
.footer__address a { color: rgba(240,244,255,0.35); transition: color var(--transition-base); }
.footer__address a:hover { color: rgba(240,244,255,0.6); }

/* =============================================
   PAGE HERO (inner pages)
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: var(--space-20) 0 var(--space-16);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(45,91,227,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero__inner { position: relative; z-index: 1; }
.page-hero__title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  color: #f0f4ff;
  line-height: 1.15;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}
.page-hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.1rem);
  color: rgba(240,244,255,0.7);
  max-width: 580px;
  line-height: 1.7;
}


.library__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.library__nav-pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-5);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(240,244,255,0.8);
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  min-height: 36px;
}
.library__nav-pill:hover {
  background: rgba(255,255,255,0.18);
  color: #f0f4ff;
  border-color: rgba(255,255,255,0.4);
}

/* =============================================
   LIBRARY SECTIONS
   ============================================= */
.library__section-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  margin-bottom: var(--space-10);
}
.library__section-tag {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(45,91,227,0.3);
}
.library__section-tag--accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  box-shadow: 0 4px 12px rgba(232,160,32,0.3);
}
.library__section-tag--green {
  background: linear-gradient(135deg, var(--color-success) 0%, #3ab874 100%);
  box-shadow: 0 4px 12px rgba(42,157,92,0.3);
}
.library__section-tag--orange {
  background: linear-gradient(135deg, #e05c20 0%, #f07840 100%);
  box-shadow: 0 4px 12px rgba(224,92,32,0.3);
}
.library__section-tag--purple {
  background: linear-gradient(135deg, #7c3aed 0%, #9b5cf6 100%);
  box-shadow: 0 4px 12px rgba(124,58,237,0.3);
}
.library__section-tag i { font-size: 1.25rem; color: #ffffff; }
.library__section-title {
  font-size: clamp(1.4rem, 2.5vw, 1.875rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.library__section-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.library__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}


.lib-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.lib-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}
.lib-card--featured {
  border-top: 3px solid var(--color-secondary);
  grid-column: span 2;
}
.lib-card__body { padding: var(--space-6); }
.lib-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.lib-card__read {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.lib-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
  margin-bottom: var(--space-3);
}
.lib-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}
.lib-card__concepts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.lib-card__concept {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
  transition: background var(--transition-base), color var(--transition-base);
}
.lib-card:hover .lib-card__concept {
  background: rgba(45,91,227,0.06);
  color: var(--color-secondary);
  border-color: rgba(45,91,227,0.2);
}
.library__footer { text-align: center; margin-top: var(--space-10); }

/* =============================================
   BROWSE BY COMPLEXITY
   ============================================= */
.complexity-intro__inner { }
.complexity-levels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.complexity-level {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.complexity-level:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.complexity-level__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}
.complexity-level--beginner .complexity-level__badge {
  background: rgba(42,157,92,0.12);
  color: var(--color-success);
}
.complexity-level--intermediate .complexity-level__badge {
  background: rgba(232,160,32,0.12);
  color: #c17a10;
}
.complexity-level--advanced .complexity-level__badge {
  background: rgba(45,91,227,0.12);
  color: var(--color-secondary);
}
.complexity-level__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.complexity-section__header {
  margin-bottom: var(--space-10);
}
.complexity-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}
.complexity-badge--beginner {
  background: rgba(42,157,92,0.12);
  color: var(--color-success);
}
.complexity-badge--intermediate {
  background: rgba(232,160,32,0.12);
  color: #c17a10;
}
.complexity-badge--advanced {
  background: rgba(45,91,227,0.12);
  color: var(--color-secondary);
}
.complexity-section__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.complexity-section__desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  line-height: 1.65;
}

.complexity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-5);
}
.complexity-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  padding: var(--space-6);
  display: flex;
  gap: var(--space-5);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.complexity-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(45,91,227,0.25);
}
.complexity-card__number {
  font-size: 2rem;
  font-weight: 800;
  color: rgba(45,91,227,0.12);
  line-height: 1;
  flex-shrink: 0;
  width: 44px;
  transition: color var(--transition-base);
}
.complexity-card:hover .complexity-card__number { color: rgba(45,91,227,0.25); }
.complexity-card__content { flex: 1; }
.complexity-card__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
  margin-bottom: var(--space-3);
}
.complexity-card__body {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}
.complexity-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.complexity-card__topic {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-light);
}
.complexity-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-secondary);
  transition: gap var(--transition-base);
}
.complexity-card__link:hover { gap: var(--space-3); }

/* =============================================
   PROSE / VENDOR PAGE
   ============================================= */
.prose-section__layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-12);
  align-items: start;
}
.prose-section__main { }
.prose-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-10);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-6);
  transition: box-shadow var(--transition-base);
}
.prose-card:hover { box-shadow: var(--shadow-md); }
.prose-card__heading {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-border-light);
}
.prose-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}
.prose-card p:last-child { margin-bottom: 0; }
.prose-link {
  color: var(--color-secondary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-base);
}
.prose-link:hover { color: var(--color-secondary-light); }


.prose-section__sidebar { position: sticky; top: calc(var(--nav-height) + var(--space-6)); }
.sidebar-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-5);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}
.sidebar-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.sidebar-card--accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-color: var(--color-primary);
}
.sidebar-card--accent .sidebar-card__title { color: #f0f4ff; }
.sidebar-card--accent .sidebar-card__body { color: rgba(240,244,255,0.72); }
.sidebar-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.sidebar-card__body {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}
.sidebar-card__list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.sidebar-card__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}
.sidebar-card__icon { font-size: 0.875rem; color: var(--color-success); margin-top: 2px; flex-shrink: 0; }
.sidebar-card__icon--no { color: var(--color-error); }
.sidebar-card__img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
}
.sidebar-card__caption {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* =============================================
   CONTACT PAGE
   ============================================= */
.contact-section__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}
.contact-form-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-10);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
}
.contact-form-card__heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.contact-form-card__intro {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

.contact-form { display: flex; flex-direction: column; gap: var(--space-5); }
.contact-form__field { display: flex; flex-direction: column; gap: var(--space-2); }
.contact-form__label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
}
.contact-form__input,
.contact-form__textarea {
  padding: 0.625rem var(--space-4);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.9rem;
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  min-height: 44px;
  width: 100%;
}
.contact-form__input:focus,
.contact-form__textarea:focus {
  border-color: var(--color-secondary);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px rgba(45,91,227,0.1);
}
.contact-form__textarea { resize: vertical; min-height: 140px; }
.contact-form__field--checkbox { }
.contact-form__checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.contact-form__checkbox {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--color-secondary);
  cursor: pointer;
}
.contact-form__link {
  color: var(--color-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.contact-form__error {
  background: rgba(217,64,64,0.08);
  border: 1px solid rgba(217,64,64,0.25);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: 0.85rem;
  color: var(--color-error);
}
.contact-form__submit { margin-top: var(--space-2); }

.contact-info-card,
.contact-response-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-7);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-5);
  transition: box-shadow var(--transition-base);
}
.contact-info-card:hover,
.contact-response-card:hover { box-shadow: var(--shadow-md); }
.contact-info-card__heading,
.contact-response-card__heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.contact-response-card__heading i { color: var(--color-secondary); }
.contact-info-card__items { display: flex; flex-direction: column; gap: var(--space-5); }
.contact-info-item { display: flex; align-items: flex-start; gap: var(--space-4); }
.contact-info-item__icon {
  width: 40px;
  height: 40px;
  background: rgba(45,91,227,0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  font-size: 1rem;
  flex-shrink: 0;
  transition: background var(--transition-base);
}
.contact-info-item:hover .contact-info-item__icon { background: rgba(45,91,227,0.15); }
.contact-info-item__content { display: flex; flex-direction: column; gap: var(--space-1); }
.contact-info-item__label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
.contact-info-item__value {
  font-size: 0.9rem;
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.4;
}
.contact-info-item__link {
  color: var(--color-secondary);
  transition: color var(--transition-base);
}
.contact-info-item__link:hover { color: var(--color-secondary-light); }
.contact-response-card__body {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}
.contact-response-card__body:last-child { margin-bottom: 0; }

.contact-map { }
.contact-map__heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.contact-map__frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
}
.contact-map__frame iframe { display: block; }

/* =============================================
   THANKS PAGE
   ============================================= */
.thanks-page {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-height) - 200px);
  padding: var(--space-20) var(--space-6);
}
.thanks-page__inner {
  text-align: center;
  max-width: 560px;
}
.thanks-page__icon {
  font-size: 4rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-6);
  animation: heroFadeUp 0.6s ease both;
}
.thanks-page__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.15;
  margin-bottom: var(--space-5);
  animation: heroFadeUp 0.6s 0.1s ease both;
}
.thanks-page__body {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.78);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  animation: heroFadeUp 0.6s 0.2s ease both;
}
.thanks-page__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  background: transparent;
  border: 2px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);
  animation: heroFadeUp 0.6s 0.3s ease both;
  min-height: 52px;
}
.thanks-page__btn:hover {
  background: rgba(255,255,255,0.15);
  border-color: #ffffff;
  transform: translateY(-2px);
}

/* =============================================
   LEGAL PAGES
   ============================================= */
.legal-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: var(--space-16) 0 var(--space-12);
}
.legal-hero--terms {
  background: linear-gradient(135deg, #1a3a5c 0%, var(--color-primary) 100%);
}
.legal-hero--cookies {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #1a2744 100%);
}
.legal-hero__inner { }
.legal-hero__title {
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 800;
  color: #f0f4ff;
  margin-bottom: var(--space-3);
  line-height: 1.15;
}
.legal-hero__meta {
  font-size: 0.85rem;
  color: rgba(240,244,255,0.55);
}


.legal-timeline { position: relative; padding-left: 160px; }
.legal-timeline::before {
  content: '';
  position: absolute;
  left: 128px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-secondary) 0%, var(--color-border) 100%);
}
.legal-timeline__item {
  position: relative;
  margin-bottom: var(--space-10);
  display: flex;
  gap: var(--space-8);
}
.legal-timeline__marker {
  position: absolute;
  left: -160px;
  width: 160px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  padding-right: var(--space-8);
  padding-top: var(--space-1);
}
.legal-timeline__date {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
}
.legal-timeline__dot {
  width: 12px;
  height: 12px;
  background: var(--color-secondary);
  border-radius: 50%;
  border: 2px solid var(--color-surface);
  box-shadow: 0 0 0 2px var(--color-secondary);
  position: absolute;
  right: -6px;
  top: 6px;
}
.legal-timeline__content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-7) var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  flex: 1;
  transition: box-shadow var(--transition-base);
}
.legal-timeline__content:hover { box-shadow: var(--shadow-md); }
.legal-timeline__heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-light);
}
.legal-timeline__subheading {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: var(--space-5) 0 var(--space-3);
}
.legal-timeline__content p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}
.legal-timeline__content p:last-child { margin-bottom: 0; }
.legal-timeline__content strong { color: var(--color-text); font-weight: 600; }


.terms-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-10);
  align-items: start;
}
.terms-toc {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}
.terms-toc__heading {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.terms-toc__list { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.terms-toc__link {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  display: block;
  transition: color var(--transition-base), background var(--transition-base);
}
.terms-toc__link:hover {
  color: var(--color-secondary);
  background: rgba(45,91,227,0.06);
}

.terms-content { }
.terms-block {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-7) var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}
.terms-block:hover { box-shadow: var(--shadow-md); border-color: var(--color-border); }
.terms-block__label {
  font-size: 2.5rem;
  font-weight: 800;
  color: rgba(45,91,227,0.1);
  line-height: 1;
  flex-shrink: 0;
  width: 40px;
  transition: color var(--transition-base);
}
.terms-block:hover .terms-block__label { color: rgba(45,91,227,0.2); }
.terms-block__body { flex: 1; }
.terms-block__heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-light);
}
.terms-block__body p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}
.terms-block__body p:last-child { margin-bottom: 0; }
.terms-block__body strong { color: var(--color-text); font-weight: 600; }


.cookies-layout {
  max-width: 860px;
  margin: 0 auto;
}
.cookie-doc-intro {
  background: linear-gradient(135deg, rgba(45,91,227,0.06) 0%, rgba(45,91,227,0.02) 100%);
  border: 1px solid rgba(45,91,227,0.15);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  margin-bottom: var(--space-8);
}
.cookie-doc-intro__text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.cookie-doc-section {
  margin-bottom: var(--space-8);
}
.cookie-doc-section__heading {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-border-light);
}
.cookie-doc-section p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}
.cookie-doc-section p:last-child { margin-bottom: 0; }
.cookie-doc-section code {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  font-size: 0.82rem;
  color: var(--color-secondary);
  font-family: 'Courier New', monospace;
}


.cookie-table {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: var(--space-5) 0;
}
.cookie-table__row {
  display: grid;
  grid-template-columns: 160px 120px 1fr 100px;
  border-bottom: 1px solid var(--color-border-light);
}
.cookie-table__row:last-child { border-bottom: none; }
.cookie-table__row--header {
  background: var(--color-bg-alt);
}
.cookie-table__cell {
  padding: var(--space-4);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  border-right: 1px solid var(--color-border-light);
}
.cookie-table__cell:last-child { border-right: none; }
.cookie-table__row--header .cookie-table__cell {
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}
.cookie-table__cell code {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  font-size: 0.78rem;
  color: var(--color-secondary);
  font-family: 'Courier New', monospace;
}

.cookie-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
}
.cookie-badge--essential {
  background: rgba(42,157,92,0.12);
  color: var(--color-success);
}
.cookie-badge--analytics {
  background: rgba(232,160,32,0.12);
  color: #c17a10;
}
.cookie-badge--prefs {
  background: rgba(45,91,227,0.12);
  color: var(--color-secondary);
}

.cookie-category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  margin-bottom: var(--space-4);
  transition: box-shadow var(--transition-base);
}
.cookie-category-card:hover { box-shadow: var(--shadow-sm); }
.cookie-category-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.cookie-category-card__title {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.cookie-category-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.cookie-prefs-cta { margin-top: var(--space-6); }

/* =============================================
   COOKIE CONSENT WIDGET
   ============================================= */
.cookie-trigger {
  position: fixed;
  bottom: var(--space-5);
  left: var(--space-5);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition: color var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);
  user-select: none;
}
.cookie-trigger:hover {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.cookie-trigger i { font-size: 0.875rem; }
.cookie-trigger.is-pulsing {
  animation: cookiePulse 2s ease-in-out 3;
}
@keyframes cookiePulse {
  0%, 100% { box-shadow: var(--shadow-sm); }
  50% { box-shadow: 0 0 0 4px rgba(45,91,227,0.2), var(--shadow-md); border-color: var(--color-secondary); }
}

.cookie-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.cookie-modal.is-open {
  pointer-events: all;
  opacity: 1;
}
.cookie-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26,39,68,0.5);
  backdrop-filter: blur(4px);
}
.cookie-modal__panel {
  position: relative;
  z-index: 1;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-hover);
  width: 100%;
  max-width: 480px;
  border: 1px solid var(--color-border-light);
  transform: translateY(16px) scale(0.97);
  transition: transform var(--transition-base);
}
.cookie-modal.is-open .cookie-modal__panel {
  transform: translateY(0) scale(1);
}
.cookie-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
}
.cookie-modal__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.cookie-modal__title i { color: var(--color-accent); }
.cookie-modal__close {
  width: 32px;
  height: 32px;
  background: var(--color-bg-alt);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.cookie-modal__close:hover { background: var(--color-border); color: var(--color-text); }
.cookie-modal__body { padding: var(--space-5) var(--space-6); }
.cookie-modal__intro {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-5);
}
.cookie-modal__category {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border-light);
}
.cookie-modal__category:last-child { border-bottom: none; }
.cookie-modal__category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}
.cookie-modal__category-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}
.cookie-modal__badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
}
.cookie-modal__badge--required {
  background: rgba(42,157,92,0.12);
  color: var(--color-success);
}
.cookie-modal__category-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}


.cookie-modal__toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
  cursor: pointer;
}
.cookie-modal__checkbox {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}
.cookie-modal__slider {
  position: absolute;
  inset: 0;
  background: var(--color-border);
  border-radius: var(--radius-full);
  transition: background var(--transition-base);
}
.cookie-modal__slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.cookie-modal__checkbox:checked + .cookie-modal__slider { background: var(--color-secondary); }
.cookie-modal__checkbox:checked + .cookie-modal__slider::before { transform: translateX(20px); }

.cookie-modal__footer {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6) var(--space-5);
  border-top: 1px solid var(--color-border-light);
  flex-wrap: wrap;
}

/* =============================================
   SCROLL REVEAL
   ============================================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   RESPONSIVE — TABLET
   ============================================= */
@media (max-width: 1024px) {
  .nav__menu { display: none; }
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }

  .why-matters__content { grid-template-columns: 1fr; gap: var(--space-10); }
  .why-matters__visual { order: -1; }
  .why-matters__card-stack { height: 280px; }

  .cta-section__inner { grid-template-columns: 1fr; }
  .cta-section__image { display: none; }

  .footer__inner { grid-template-columns: 1fr; gap: var(--space-10); }
  .footer__right { grid-template-columns: repeat(3, 1fr); }

  .prose-section__layout { grid-template-columns: 1fr; }
  .prose-section__sidebar { position: static; }

  .terms-layout { grid-template-columns: 1fr; }
  .terms-toc { position: static; }

  .legal-timeline { padding-left: 0; }
  .legal-timeline::before { display: none; }
  .legal-timeline__marker { display: none; }
  .legal-timeline__item { display: block; }
  .legal-timeline__content { border-left: 3px solid var(--color-secondary); }

  .overlap-bridge__content { grid-template-columns: 1fr; }
  .overlap-bridge__img { height: 220px; min-height: unset; }
  .overlap-bridge__text { padding: var(--space-8); }

  .lib-card--featured { grid-column: span 1; }

  .complexity-levels { grid-template-columns: 1fr; }
}

/* =============================================
   RESPONSIVE — MOBILE
   ============================================= */
@media (max-width: 640px) {
  :root { --nav-height: 64px; }

  .section { padding: var(--space-12) 0; }
  .container { padding: 0 var(--space-4); }

  .hero__image-strip { height: 200px; }
  .hero__strip-badge { display: none; }
  .hero__scroll-hint { display: none; }

  .topics__grid { grid-template-columns: 1fr; }
  .articles__grid { grid-template-columns: 1fr; }
  .reasons__grid { grid-template-columns: 1fr; }
  .library__grid { grid-template-columns: 1fr; }
  .complexity-grid { grid-template-columns: 1fr; }

  .section--overlap-top { margin-top: -40px; padding-top: calc(var(--space-12) + 40px); }
  .overlap-bridge { margin-top: -30px; margin-bottom: -30px; padding: 0 var(--space-4); }

  .footer__right { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }

  .contact-section__layout { grid-template-columns: 1fr; }
  .contact-form-card { padding: var(--space-6); }

  .cta-section__form-row { flex-direction: column; }
  .cta-section__input { min-width: unset; }

  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }

  .why-matters__card-stack { height: 220px; }

  .prose-card { padding: var(--space-6); }

  .cookie-table__row { grid-template-columns: 1fr; }
  .cookie-table__cell { border-right: none; border-bottom: 1px solid var(--color-border-light); }
  .cookie-table__cell:last-child { border-bottom: none; }
  .cookie-table__row--header { display: none; }

  .terms-block { flex-direction: column; gap: var(--space-3); }
  .terms-block__label { font-size: 1.5rem; width: auto; }

  .footer__right { grid-template-columns: 1fr; }
  .footer__bottom-inner { flex-direction: column; align-items: flex-start; }

  .complexity-card { flex-direction: column; }
  .complexity-card__number { width: auto; }

  .library__nav { gap: var(--space-2); }
  .library__nav-pill { font-size: 0.75rem; padding: var(--space-2) var(--space-4); }
}

@media (max-width: 380px) {
  .nav__logo-text { display: none; }
  .cookie-trigger span { display: none; }
}