/* ─── Design Tokens ─── */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3.5rem,   1rem    + 6vw,    7rem);

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

  --radius-sm: 0px;
  --radius-md: 0px;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow:  640px;
  --content-default: 1000px;
  --content-wide:    1280px;
}

/* ─── Monochrome Palette ─── */
:root,
[data-theme='light'] {
  --color-bg:          #FAFAFA;
  --color-surface:     #F5F5F5;
  --color-border:      #E0E0E0;
  --color-border-dark: #BBBBBB;
  --color-text:        #111111;
  --color-text-muted:  #666666;
  --color-text-faint:  #AAAAAA;
  --color-text-inverse:#FAFAFA;
  --color-ink:         #111111;

  --font-display: 'Cormorant', Georgia, serif;
  --font-body:    'Switzer', 'Helvetica Neue', sans-serif;
}

[data-theme='dark'] {
  --color-bg:          #0F0F0F;
  --color-surface:     #161616;
  --color-border:      #2A2A2A;
  --color-border-dark: #444444;
  --color-text:        #EEEEEE;
  --color-text-muted:  #888888;
  --color-text-faint:  #555555;
  --color-text-inverse:#0F0F0F;
  --color-ink:         #EEEEEE;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:          #0F0F0F;
    --color-surface:     #161616;
    --color-border:      #2A2A2A;
    --color-border-dark: #444444;
    --color-text:        #EEEEEE;
    --color-text-muted:  #888888;
    --color-text-faint:  #555555;
    --color-text-inverse:#0F0F0F;
    --color-ink:         #EEEEEE;
  }
}

/* ─── Layout ─── */
.container {
  width: min(var(--content-wide), 100% - var(--space-8));
  margin-inline: auto;
}

.container--narrow {
  width: min(var(--content-default), 100% - var(--space-8));
  margin-inline: auto;
}

/* ─── Nav ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: 60px;
  display: flex;
  align-items: center;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.nav__logo-mark {
  width: 32px;
  height: 32px;
}

.nav__wordmark {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

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

.nav__links a {
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

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

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

.btn-theme {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-theme:hover { color: var(--color-text); border-color: var(--color-border-dark); }

.btn-lang {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 0.75rem;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: none;
  cursor: pointer;
  transition: color 180ms, border-color 180ms;
}

.btn-lang:hover { color: var(--color-text); border-color: var(--color-border-dark); }

.btn--primary {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-inverse);
  background: var(--color-text);
  border: 1px solid var(--color-text);
  padding: 0.6em 1.4em;
  text-decoration: none;
  cursor: pointer;
}

.btn--primary:hover { opacity: 0.8; }

.btn--ghost {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-border-dark);
  padding: 0.6em 1.4em;
  text-decoration: none;
  cursor: pointer;
}

.btn--ghost:hover { border-color: var(--color-text); }

/* ─── Hero ─── */
.hero {
  padding-top: calc(60px + var(--space-24));
  padding-bottom: var(--space-24);
  border-bottom: 1px solid var(--color-border);
}

.hero__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-8);
  max-width: 14ch;
}

.hero__title em {
  font-style: italic;
}

.hero__body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.7;
  margin-bottom: var(--space-10);
}

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

.hero__stat-row {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-16);
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.hero__stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.hero__stat-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ─── Section Labels ─── */
.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-border-dark);
}

/* ─── How It Works ─── */
.how {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  border-bottom: 1px solid var(--color-border);
}

.how__grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  align-items: start;
}

.how__heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-text);
  position: sticky;
  top: 80px;
}

.how__heading em { font-style: italic; }

.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-6);
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.step:last-child { border-bottom: 1px solid var(--color-border); }

.step__num {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text-faint);
  font-weight: 400;
  padding-top: 0.1em;
}

.step__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.step__body {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 52ch;
}

/* ─── Concepts Gallery ─── */
.gallery {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  border-bottom: 1px solid var(--color-border);
}

.gallery__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
}

.gallery__heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1.05;
}

.gallery__heading em { font-style: italic; }

.gallery__filter {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 0.45em 1em;
  cursor: pointer;
  background: transparent;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--color-text-inverse);
  background: var(--color-text);
  border-color: var(--color-text);
}

.concepts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.concept-card {
  background: var(--color-bg);
  padding: var(--space-8);
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-height: 280px;
}

.concept-card:hover { background: var(--color-surface); }

.concept-card__num {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
}

.concept-card__industry {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  font-weight: 500;
}

.concept-card__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.1;
  flex-grow: 1;
}

.concept-card__name em { font-style: italic; }

.concept-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.concept-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.concept-card__price {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
}

.concept-card__market {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.concept-card__arrow {
  color: var(--color-text-faint);
  transition: transform var(--transition), color var(--transition);
}

.concept-card:hover .concept-card__arrow {
  transform: translate(3px, -3px);
  color: var(--color-text);
}

/* ─── What's Included ─── */
.included {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  border-bottom: 1px solid var(--color-border);
}

.included__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0;
  border: 1px solid var(--color-border);
}

.included__item {
  padding: var(--space-8);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.included__item:nth-child(3n) { border-right: none; }

.included__num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-border-dark);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.included__title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.included__desc {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ─── Markets ─── */
.markets {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  border-bottom: 1px solid var(--color-border);
}

.markets__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.market-tile {
  background: var(--color-bg);
  padding: var(--space-10);
}

.market-tile__flag {
  font-size: 2rem;
  margin-bottom: var(--space-4);
}

.market-tile__name {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.market-tile__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 44ch;
}

.market-tile__entities {
  margin-top: var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ─── CTA Banner ─── */
.cta-banner {
  padding-block: clamp(var(--space-16), 10vw, var(--space-24));
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.cta-banner__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-6);
}

.cta-banner__heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  max-width: 16ch;
  margin-inline: auto;
}

.cta-banner__heading em { font-style: italic; }

.cta-banner__sub {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 44ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

.cta-banner__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Footer ─── */
.footer {
  padding-block: var(--space-12);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer__brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.footer__tagline {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
  margin-top: var(--space-1);
}

.footer__links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}

.footer__links a {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  text-decoration: none;
}

.footer__links a:hover { color: var(--color-text); }

.footer__copy {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 240ms ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  max-width: 600px;
  width: 100%;
  max-height: 90dvh;
  overflow-y: auto;
  padding: var(--space-10);
  position: relative;
  transform: translateY(16px);
  transition: transform 240ms cubic-bezier(0.16,1,0.3,1);
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal__close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  line-height: 1;
}
.modal__close:hover { color: var(--color-text); }

.modal__industry {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}

.modal__name {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.05;
}

.modal__desc {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.modal__price-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
}

.modal__price {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-text);
}

.modal__price-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.modal__includes-title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

.modal__includes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.modal__includes-list li {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  gap: var(--space-3);
  align-items: baseline;
}

.modal__includes-list li::before {
  content: '—';
  color: var(--color-text-faint);
  flex-shrink: 0;
}

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

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .nav__links { display: none; }

  .how__grid {
    grid-template-columns: 1fr;
  }
  .how__heading { position: static; }

  .markets__grid { grid-template-columns: 1fr; }

  .concepts-grid {
    grid-template-columns: 1fr;
  }

  .included__grid {
    grid-template-columns: 1fr 1fr;
  }
  .included__item:nth-child(3n) { border-right: 1px solid var(--color-border); }
  .included__item:nth-child(2n) { border-right: none; }

  .gallery__header { flex-direction: column; align-items: flex-start; }

  .footer__inner { flex-direction: column; gap: var(--space-4); }
  .footer__links { flex-wrap: wrap; gap: var(--space-4); }
}

@media (max-width: 480px) {
  .hero__stat-row { gap: var(--space-8); }
  .included__grid { grid-template-columns: 1fr; }
  .included__item:nth-child(n) { border-right: none; }
}