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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #F8F9FA;
  color: #1A1A2E;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Accent ── */
:root {
  --accent: #0F0F1A;
  --accent-warm: #D97706;
  --accent-warm-light: #FEF3C7;
  --accent-warm-subtle: #FDE68A;
  --accent-warm-glow: rgba(217, 119, 6, 0.08);
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  background: rgba(248, 249, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__brand {
  font-size: 1rem;
  font-weight: 600;
  color: #0F0F1A;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 400;
  color: #6B7280;
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav__back span {
  transition: transform 0.3s ease;
}

.nav__back:hover {
  color: #0F0F1A;
}

.nav__back:hover span {
  transform: translateX(-3px);
}

/* ── Hero ── */
.gv-hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 8rem 2rem 6rem;
}

.gv-hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.gv-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
}

.gv-hero__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 1.5rem;
}

.gv-hero__title {
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: #0F0F1A;
  line-height: 1;
  margin-bottom: 1rem;
}

.gv-hero__subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 300;
  color: #6B7280;
  letter-spacing: 0.01em;
  margin-bottom: 2rem;
}

.gv-hero__lead {
  font-size: 1.0625rem;
  font-weight: 300;
  color: #4B5563;
  line-height: 1.8;
  max-width: 560px;
  margin: 0 auto 2rem;
}

.gv-hero__lead strong {
  font-weight: 600;
  color: #0F0F1A;
}

.gv-hero__status {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-warm);
  background: var(--accent-warm-light);
  padding: 0.4rem 1rem;
  border-radius: 100px;
}

/* ── Section title (shared) ── */
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #0F0F1A;
  line-height: 1.15;
}

/* ── Vision ── */
.vision {
  padding: 8rem 2rem;
}

.vision__inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.vision__body {
  font-size: 1.125rem;
  font-weight: 300;
  color: #4B5563;
  line-height: 1.9;
  margin: 2rem auto 4rem;
  max-width: 620px;
}

.vision__body strong {
  font-weight: 500;
  color: #1A1A2E;
}

/* Convergence diagram */
.vision__convergence {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2.5rem 0;
}

.vision__source {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.vision__source-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #F1F5F9;
  color: #6B7280;
}

.vision__source-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #0F0F1A;
}

.vision__source-label {
  font-size: 0.75rem;
  font-weight: 400;
  color: #9CA3AF;
}

.vision__arrow {
  color: #D1D5DB;
}

.vision__center {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: #0F0F1A;
  box-shadow: 0 0 0 8px rgba(15, 15, 26, 0.04), 0 0 0 16px rgba(15, 15, 26, 0.02);
}

.vision__center-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #FAFBFC;
}

/* ── Pillars ── */
.pillars {
  padding: 4rem 2rem 8rem;
}

.pillars__inner {
  max-width: 1000px;
  margin: 0 auto;
}

.pillars__header {
  text-align: center;
  margin-bottom: 4rem;
}

.pillars__intro {
  font-size: 1.125rem;
  font-weight: 300;
  color: #6B7280;
  margin-top: 1.25rem;
}

.pillars__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.pil {
  background: #FFFFFF;
  border: 1px solid #F0F0F3;
  border-radius: 16px;
  padding: 2.5rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.pil:hover {
  border-color: #E0E0E6;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.03);
}

.pil--wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.pil--accent {
  background: #FAFBFC;
  border-color: #E5E7EB;
}

.pil__label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-warm);
  background: var(--accent-warm-light);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}

.pil__title {
  font-size: 1.375rem;
  font-weight: 600;
  color: #0F0F1A;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.pil__text {
  font-size: 0.9375rem;
  font-weight: 300;
  color: #6B7280;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.pil__text strong {
  font-weight: 500;
  color: #1A1A2E;
}

.pil__list {
  list-style: none;
  padding: 0;
}

.pil__list li {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 300;
  color: #4B5563;
  line-height: 1.7;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
}

.pil__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-warm-subtle);
}

.pil__visual {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  background: #FAFBFC;
  overflow: hidden;
  position: relative;
}

/* Index preview bar */
.pil__index-preview {
  margin-top: 0.5rem;
}

.pil__index-bar {
  height: 8px;
  border-radius: 100px;
  background: #F0F0F3;
  overflow: hidden;
}

.pil__index-fill {
  width: 72%;
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, #EF4444 0%, #F59E0B 35%, #22C55E 70%, #10B981 100%);
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.pil__index-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
}

.pil__index-labels span {
  font-size: 0.6875rem;
  font-weight: 500;
  color: #9CA3AF;
}

/* ── CTA ── */
.cta {
  padding: 8rem 2rem;
  text-align: center;
}

.cta__inner {
  max-width: 600px;
  margin: 0 auto;
}

.cta__badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-warm);
  background: var(--accent-warm-light);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.cta__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #0F0F1A;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.cta__text {
  font-size: 1.0625rem;
  font-weight: 300;
  color: #6B7280;
  margin-bottom: 2.5rem;
}

.cta__actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.cta__btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 100px;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
}

.cta__btn--primary {
  color: #FAFBFC;
  background: #0F0F1A;
}

.cta__btn--primary:hover {
  background: #1E293B;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(15, 15, 26, 0.15);
}

.cta__btn--secondary {
  color: #0F0F1A;
  background: transparent;
  border: 1px solid #D1D5DB;
}

.cta__btn--secondary:hover {
  border-color: #9CA3AF;
  background: #FFFFFF;
}

/* ── Footer ── */
.footer {
  padding: 4rem 2rem;
  border-top: 1px solid #E5E7EB;
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__brand {
  font-size: 1rem;
  font-weight: 600;
  color: #0F0F1A;
  letter-spacing: -0.01em;
}

.footer__copy {
  font-size: 0.8125rem;
  color: #9CA3AF;
}

/* ── Scroll animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav {
    padding: 1rem 1.5rem;
  }

  .gv-hero {
    min-height: 80vh;
    padding: 7rem 1.5rem 4rem;
  }

  .vision {
    padding: 5rem 1.5rem;
  }

  .vision__convergence {
    flex-direction: column;
    gap: 1rem;
  }

  .vision__arrow {
    transform: rotate(90deg);
  }

  .pillars {
    padding: 3rem 1.5rem 5rem;
  }

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

  .pil--wide {
    grid-template-columns: 1fr;
  }

  .pil__visual {
    display: none;
  }

  .cta {
    padding: 5rem 1.5rem;
  }

  .cta__actions {
    flex-direction: column;
    align-items: center;
  }

  .footer__inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}